/usr/share/doc/libghc-chart-doc/html/src/Graphics-Rendering-Chart-Drawing.html is in libghc-chart-doc 1.8.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 | <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<!-- Generated by HsColour, http://code.haskell.org/~malcolm/hscolour/ -->
<title>Graphics/Rendering/Chart/Drawing.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : Graphics.Rendering.Chart.Drawing</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) Tim Docker 2006, 2014</span>
<a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see chart/COPYRIGHT)</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- This module contains basic types and functions used for drawing.</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>-- Note that Template Haskell is used to derive accessor functions</span>
<a name="line-10"></a><span class='hs-comment'>-- (see 'Control.Lens') for each field of the following data types:</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- * 'PointStyle'</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>-- These accessors are not shown in this API documentation. They have</span>
<a name="line-15"></a><span class='hs-comment'>-- the same name as the field, but with the trailing underscore</span>
<a name="line-16"></a><span class='hs-comment'>-- dropped. Hence for data field @f_::F@ in type @D@, they have type</span>
<a name="line-17"></a><span class='hs-comment'>--</span>
<a name="line-18"></a><span class='hs-comment'>-- @</span>
<a name="line-19"></a><span class='hs-comment'>-- f :: Control.Lens.Lens' D F</span>
<a name="line-20"></a><span class='hs-comment'>-- @</span>
<a name="line-21"></a><span class='hs-comment'>--</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='hs-comment'>{-# LANGUAGE TemplateHaskell #-}</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Drawing</span>
<a name="line-26"></a> <span class='hs-layout'>(</span> <span class='hs-comment'>-- * Point Types and Drawing</span>
<a name="line-27"></a> <span class='hs-conid'>PointShape</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-28"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>PointStyle</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-29"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>drawPoint</span>
<a name="line-30"></a>
<a name="line-31"></a> <span class='hs-comment'>-- * Alignments and Paths</span>
<a name="line-32"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>alignPath</span>
<a name="line-33"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>alignFillPath</span>
<a name="line-34"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>alignStrokePath</span>
<a name="line-35"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>alignFillPoints</span>
<a name="line-36"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>alignStrokePoints</span>
<a name="line-37"></a>
<a name="line-38"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>alignFillPoint</span>
<a name="line-39"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>alignStrokePoint</span>
<a name="line-40"></a>
<a name="line-41"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>strokePointPath</span>
<a name="line-42"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>fillPointPath</span>
<a name="line-43"></a>
<a name="line-44"></a> <span class='hs-comment'>-- * Transformation and Style Helpers</span>
<a name="line-45"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>withRotation</span>
<a name="line-46"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>withTranslation</span>
<a name="line-47"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>withScale</span>
<a name="line-48"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>withScaleX</span><span class='hs-layout'>,</span> <span class='hs-varid'>withScaleY</span>
<a name="line-49"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>withPointStyle</span>
<a name="line-50"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>withDefaultStyle</span>
<a name="line-51"></a>
<a name="line-52"></a> <span class='hs-comment'>-- * Text Drawing</span>
<a name="line-53"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>drawTextA</span>
<a name="line-54"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>drawTextR</span>
<a name="line-55"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>drawTextsR</span>
<a name="line-56"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>textDrawRect</span>
<a name="line-57"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>textDimension</span>
<a name="line-58"></a>
<a name="line-59"></a> <span class='hs-comment'>-- * Style Helpers</span>
<a name="line-60"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>defaultColorSeq</span>
<a name="line-61"></a>
<a name="line-62"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>solidLine</span>
<a name="line-63"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>dashedLine</span>
<a name="line-64"></a>
<a name="line-65"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>filledCircles</span>
<a name="line-66"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>hollowCircles</span>
<a name="line-67"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>filledPolygon</span>
<a name="line-68"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>hollowPolygon</span>
<a name="line-69"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>plusses</span>
<a name="line-70"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>exes</span>
<a name="line-71"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>stars</span>
<a name="line-72"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>arrows</span>
<a name="line-73"></a>
<a name="line-74"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>solidFillStyle</span>
<a name="line-75"></a>
<a name="line-76"></a> <span class='hs-comment'>-- * Backend and general Types</span>
<a name="line-77"></a> <span class='hs-layout'>,</span> <span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Backend</span>
<a name="line-78"></a>
<a name="line-79"></a> <span class='hs-comment'>-- * Accessors</span>
<a name="line-80"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>point_color</span>
<a name="line-81"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>point_border_color</span>
<a name="line-82"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>point_border_width</span>
<a name="line-83"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>point_radius</span>
<a name="line-84"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>point_shape</span>
<a name="line-85"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-86"></a>
<a name="line-87"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Default</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span>
<a name="line-88"></a><span class='hs-comment'>-- lens < 4 includes Control.Lens.Zipper.moveTo which clashes</span>
<a name="line-89"></a><span class='hs-comment'>-- with Graphics.Rendering.Chart.Geometry.moveTo (so you get</span>
<a name="line-90"></a><span class='hs-comment'>-- -Wall notices). This would suggest a 'hiding (moveTo)' in</span>
<a name="line-91"></a><span class='hs-comment'>-- the import, but it's been removed in lens-4.0 and I don't</span>
<a name="line-92"></a><span class='hs-comment'>-- feel it's worth the use of conditional compilation. This does</span>
<a name="line-93"></a><span class='hs-comment'>-- lead to the qualified Geometry import below.</span>
<a name="line-94"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Lens</span>
<a name="line-95"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Colour</span>
<a name="line-96"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Colour</span><span class='hs-varop'>.</span><span class='hs-conid'>Names</span>
<a name="line-97"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span><span class='hs-varid'>unfoldr</span><span class='hs-layout'>)</span>
<a name="line-98"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span>
<a name="line-99"></a>
<a name="line-100"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Backend</span>
<a name="line-101"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Geometry</span> <span class='hs-varid'>hiding</span> <span class='hs-layout'>(</span><span class='hs-varid'>moveTo</span><span class='hs-layout'>)</span>
<a name="line-102"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Rendering</span><span class='hs-varop'>.</span><span class='hs-conid'>Chart</span><span class='hs-varop'>.</span><span class='hs-conid'>Geometry</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>G</span>
<a name="line-103"></a>
<a name="line-104"></a><span class='hs-comment'>-- -----------------------------------------------------------------------</span>
<a name="line-105"></a><span class='hs-comment'>-- Transformation helpers</span>
<a name="line-106"></a><span class='hs-comment'>-- -----------------------------------------------------------------------</span>
<a name="line-107"></a>
<a name="line-108"></a><a name="withRotation"></a><span class='hs-comment'>-- | Apply a local rotation. The angle is given in radians.</span>
<a name="line-109"></a><span class='hs-definition'>withRotation</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span>
<a name="line-110"></a><span class='hs-definition'>withRotation</span> <span class='hs-varid'>angle</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withTransform</span> <span class='hs-layout'>(</span><span class='hs-varid'>rotate</span> <span class='hs-varid'>angle</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-111"></a>
<a name="line-112"></a><a name="withTranslation"></a><span class='hs-comment'>-- | Apply a local translation.</span>
<a name="line-113"></a><span class='hs-definition'>withTranslation</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Point</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span>
<a name="line-114"></a><span class='hs-definition'>withTranslation</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withTransform</span> <span class='hs-layout'>(</span><span class='hs-varid'>translate</span> <span class='hs-layout'>(</span><span class='hs-varid'>pointToVec</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-115"></a>
<a name="line-116"></a><a name="withScale"></a><span class='hs-comment'>-- | Apply a local scale.</span>
<a name="line-117"></a><span class='hs-definition'>withScale</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Vector</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span>
<a name="line-118"></a><span class='hs-definition'>withScale</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withTransform</span> <span class='hs-layout'>(</span><span class='hs-varid'>scale</span> <span class='hs-varid'>v</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-119"></a>
<a name="line-120"></a><a name="withScaleX"></a><span class='hs-comment'>-- | Apply a local scale on the x-axis.</span>
<a name="line-121"></a><span class='hs-definition'>withScaleX</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span>
<a name="line-122"></a><span class='hs-definition'>withScaleX</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withScale</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vector</span> <span class='hs-varid'>x</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span>
<a name="line-123"></a>
<a name="line-124"></a><a name="withScaleY"></a><span class='hs-comment'>-- | Apply a local scale on the y-axis.</span>
<a name="line-125"></a><span class='hs-definition'>withScaleY</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span>
<a name="line-126"></a><span class='hs-definition'>withScaleY</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withScale</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vector</span> <span class='hs-num'>1</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-127"></a>
<a name="line-128"></a><a name="withPointStyle"></a><span class='hs-comment'>-- | Changes the 'LineStyle' and 'FillStyle' to comply with</span>
<a name="line-129"></a><span class='hs-comment'>-- the given 'PointStyle'.</span>
<a name="line-130"></a><span class='hs-definition'>withPointStyle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PointStyle</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span>
<a name="line-131"></a><span class='hs-definition'>withPointStyle</span> <span class='hs-layout'>(</span><span class='hs-conid'>PointStyle</span> <span class='hs-varid'>cl</span> <span class='hs-varid'>bcl</span> <span class='hs-varid'>bw</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span>
<a name="line-132"></a> <span class='hs-varid'>withLineStyle</span> <span class='hs-layout'>(</span><span class='hs-varid'>def</span> <span class='hs-layout'>{</span> <span class='hs-sel'>_line_color</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bcl</span><span class='hs-layout'>,</span> <span class='hs-sel'>_line_width</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bw</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-133"></a> <span class='hs-varid'>withFillStyle</span> <span class='hs-layout'>(</span><span class='hs-varid'>solidFillStyle</span> <span class='hs-varid'>cl</span><span class='hs-layout'>)</span> <span class='hs-varid'>m</span>
<a name="line-134"></a>
<a name="line-135"></a><a name="withDefaultStyle"></a><span class='hs-definition'>withDefaultStyle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-varid'>a</span>
<a name="line-136"></a><span class='hs-definition'>withDefaultStyle</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withLineStyle</span> <span class='hs-varid'>def</span> <span class='hs-varop'>.</span> <span class='hs-varid'>withFillStyle</span> <span class='hs-varid'>def</span> <span class='hs-varop'>.</span> <span class='hs-varid'>withFontStyle</span> <span class='hs-varid'>def</span>
<a name="line-137"></a>
<a name="line-138"></a><span class='hs-comment'>-- -----------------------------------------------------------------------</span>
<a name="line-139"></a><span class='hs-comment'>-- Alignment Helpers</span>
<a name="line-140"></a><span class='hs-comment'>-- -----------------------------------------------------------------------</span>
<a name="line-141"></a>
<a name="line-142"></a><a name="alignPath"></a><span class='hs-comment'>-- | Align the path by applying the given function on all points.</span>
<a name="line-143"></a><span class='hs-definition'>alignPath</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Point</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span>
<a name="line-144"></a><span class='hs-definition'>alignPath</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldPath</span> <span class='hs-layout'>(</span><span class='hs-conid'>G</span><span class='hs-varop'>.</span><span class='hs-varid'>moveTo</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-145"></a> <span class='hs-layout'>(</span><span class='hs-varid'>lineTo</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-146"></a> <span class='hs-layout'>(</span><span class='hs-varid'>arc</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-147"></a> <span class='hs-layout'>(</span><span class='hs-varid'>arcNeg</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-148"></a> <span class='hs-varid'>close</span>
<a name="line-149"></a>
<a name="line-150"></a><a name="alignStrokePath"></a><span class='hs-comment'>-- | Align the path using the environment's alignment function for points.</span>
<a name="line-151"></a><span class='hs-comment'>-- This is generally useful when stroking. </span>
<a name="line-152"></a><span class='hs-comment'>-- See 'alignPath' and 'getPointAlignFn'.</span>
<a name="line-153"></a><span class='hs-definition'>alignStrokePath</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>Path</span>
<a name="line-154"></a><span class='hs-definition'>alignStrokePath</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-155"></a> <span class='hs-varid'>f</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getPointAlignFn</span>
<a name="line-156"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>alignPath</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-157"></a>
<a name="line-158"></a><a name="alignFillPath"></a><span class='hs-comment'>-- | Align the path using the environment's alignment function for coordinates.</span>
<a name="line-159"></a><span class='hs-comment'>-- This is generally useful when filling. </span>
<a name="line-160"></a><span class='hs-comment'>-- See 'alignPath' and 'getCoordAlignFn'.</span>
<a name="line-161"></a><span class='hs-definition'>alignFillPath</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Path</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>Path</span>
<a name="line-162"></a><span class='hs-definition'>alignFillPath</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-163"></a> <span class='hs-varid'>f</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getCoordAlignFn</span>
<a name="line-164"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>alignPath</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-165"></a>
<a name="line-166"></a><a name="alignStrokePoints"></a><span class='hs-comment'>-- | The points will be aligned by the 'getPointAlignFn', so that</span>
<a name="line-167"></a><span class='hs-comment'>-- when drawing bitmaps, 1 pixel wide lines will be centred on the</span>
<a name="line-168"></a><span class='hs-comment'>-- pixels.</span>
<a name="line-169"></a><span class='hs-definition'>alignStrokePoints</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Point</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Point</span><span class='hs-keyglyph'>]</span>
<a name="line-170"></a><span class='hs-definition'>alignStrokePoints</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-171"></a> <span class='hs-varid'>f</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getPointAlignFn</span>
<a name="line-172"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-173"></a>
<a name="line-174"></a><a name="alignFillPoints"></a><span class='hs-comment'>-- | The points will be aligned by the 'getCoordAlignFn', so that</span>
<a name="line-175"></a><span class='hs-comment'>-- when drawing bitmaps, the edges of the region will fall between</span>
<a name="line-176"></a><span class='hs-comment'>-- pixels.</span>
<a name="line-177"></a><span class='hs-definition'>alignFillPoints</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Point</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Point</span><span class='hs-keyglyph'>]</span>
<a name="line-178"></a><span class='hs-definition'>alignFillPoints</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-179"></a> <span class='hs-varid'>f</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getCoordAlignFn</span>
<a name="line-180"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fmap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>p</span>
<a name="line-181"></a>
<a name="line-182"></a><a name="alignStrokePoint"></a><span class='hs-comment'>-- | Align the point using the environment's alignment function for points.</span>
<a name="line-183"></a><span class='hs-comment'>-- See 'getPointAlignFn'.</span>
<a name="line-184"></a><span class='hs-definition'>alignStrokePoint</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Point</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>Point</span>
<a name="line-185"></a><span class='hs-definition'>alignStrokePoint</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-186"></a> <span class='hs-varid'>alignfn</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getPointAlignFn</span>
<a name="line-187"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>alignfn</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-188"></a>
<a name="line-189"></a><a name="alignFillPoint"></a><span class='hs-comment'>-- | Align the point using the environment's alignment function for coordinates.</span>
<a name="line-190"></a><span class='hs-comment'>-- See 'getCoordAlignFn'.</span>
<a name="line-191"></a><span class='hs-definition'>alignFillPoint</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Point</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>Point</span>
<a name="line-192"></a><span class='hs-definition'>alignFillPoint</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-193"></a> <span class='hs-varid'>alignfn</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getCoordAlignFn</span>
<a name="line-194"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>alignfn</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-195"></a>
<a name="line-196"></a><a name="stepPath"></a><span class='hs-comment'>-- | Create a path by connecting all points with a line.</span>
<a name="line-197"></a><span class='hs-comment'>-- The path is not closed.</span>
<a name="line-198"></a><span class='hs-definition'>stepPath</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Point</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Path</span>
<a name="line-199"></a><span class='hs-definition'>stepPath</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-conop'>:</span><span class='hs-varid'>ps</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>G</span><span class='hs-varop'>.</span><span class='hs-varid'>moveTo</span> <span class='hs-varid'>p</span>
<a name="line-200"></a> <span class='hs-varop'><></span> <span class='hs-varid'>mconcat</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>lineTo</span> <span class='hs-varid'>ps</span><span class='hs-layout'>)</span>
<a name="line-201"></a><span class='hs-definition'>stepPath</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span>
<a name="line-202"></a>
<a name="line-203"></a><a name="strokePointPath"></a><span class='hs-comment'>-- | Draw lines between the specified points.</span>
<a name="line-204"></a><span class='hs-definition'>strokePointPath</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Point</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>()</span>
<a name="line-205"></a><span class='hs-definition'>strokePointPath</span> <span class='hs-varid'>pts</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>strokePath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>stepPath</span> <span class='hs-varid'>pts</span>
<a name="line-206"></a>
<a name="line-207"></a><a name="fillPointPath"></a><span class='hs-comment'>-- | Fill the region with the given corners.</span>
<a name="line-208"></a><span class='hs-definition'>fillPointPath</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Point</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>()</span>
<a name="line-209"></a><span class='hs-definition'>fillPointPath</span> <span class='hs-varid'>pts</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fillPath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>stepPath</span> <span class='hs-varid'>pts</span>
<a name="line-210"></a>
<a name="line-211"></a><span class='hs-comment'>-- -----------------------------------------------------------------------</span>
<a name="line-212"></a><span class='hs-comment'>-- Text Drawing</span>
<a name="line-213"></a><span class='hs-comment'>-- -----------------------------------------------------------------------</span>
<a name="line-214"></a>
<a name="line-215"></a><a name="drawTextA"></a><span class='hs-comment'>-- | Draw a line of text that is aligned at a different anchor point.</span>
<a name="line-216"></a><span class='hs-comment'>-- See 'drawText'.</span>
<a name="line-217"></a><span class='hs-definition'>drawTextA</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>VTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Point</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>()</span>
<a name="line-218"></a><span class='hs-definition'>drawTextA</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>drawTextR</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-num'>0</span>
<a name="line-219"></a>
<a name="line-220"></a><span class='hs-comment'>{-
<a name="line-221"></a> The following is useful for checking out the bounding-box
<a name="line-222"></a> calculation. At present it looks okay for PNG/Cairo but
<a name="line-223"></a> is a bit off for SVG/Diagrams; this may well be down to
<a name="line-224"></a> differences in how fonts are rendered in the two backends
<a name="line-225"></a>
<a name="line-226"></a>drawTextA hta vta p txt =
<a name="line-227"></a> drawTextR hta vta 0 p txt
<a name="line-228"></a> >> withLineStyle (solidLine 1 (opaque red))
<a name="line-229"></a> (textDrawRect hta vta p txt
<a name="line-230"></a> >>= \rect -> alignStrokePath (rectPath rect) >>= strokePath)
<a name="line-231"></a>-}</span>
<a name="line-232"></a>
<a name="line-233"></a><a name="drawTextR"></a><span class='hs-comment'>-- | Draw a textual label anchored by one of its corners</span>
<a name="line-234"></a><span class='hs-comment'>-- or edges, with rotation. Rotation angle is given in degrees,</span>
<a name="line-235"></a><span class='hs-comment'>-- rotation is performed around anchor point.</span>
<a name="line-236"></a><span class='hs-comment'>-- See 'drawText'.</span>
<a name="line-237"></a><span class='hs-definition'>drawTextR</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>VTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Point</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>()</span>
<a name="line-238"></a><span class='hs-definition'>drawTextR</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-varid'>angle</span> <span class='hs-varid'>p</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span>
<a name="line-239"></a> <span class='hs-varid'>withTranslation</span> <span class='hs-varid'>p</span> <span class='hs-varop'>$</span>
<a name="line-240"></a> <span class='hs-varid'>withRotation</span> <span class='hs-varid'>theta</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-241"></a> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>textSize</span> <span class='hs-varid'>s</span>
<a name="line-242"></a> <span class='hs-varid'>drawText</span> <span class='hs-layout'>(</span><span class='hs-varid'>adjustText</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span>
<a name="line-243"></a> <span class='hs-keyword'>where</span>
<a name="line-244"></a> <span class='hs-varid'>theta</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>angle</span><span class='hs-varop'>*</span><span class='hs-varid'>pi</span><span class='hs-varop'>/</span><span class='hs-num'>180.0</span>
<a name="line-245"></a>
<a name="line-246"></a><a name="drawTextsR"></a><span class='hs-comment'>-- | Draw a multi-line textual label anchored by one of its corners</span>
<a name="line-247"></a><span class='hs-comment'>-- or edges, with rotation. Rotation angle is given in degrees,</span>
<a name="line-248"></a><span class='hs-comment'>-- rotation is performed around anchor point.</span>
<a name="line-249"></a><span class='hs-comment'>-- See 'drawText'.</span>
<a name="line-250"></a><span class='hs-definition'>drawTextsR</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>VTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Point</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>()</span>
<a name="line-251"></a><span class='hs-definition'>drawTextsR</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-varid'>angle</span> <span class='hs-varid'>p</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>num</span> <span class='hs-keyword'>of</span>
<a name="line-252"></a> <span class='hs-num'>0</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-253"></a> <span class='hs-num'>1</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>drawTextR</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-varid'>angle</span> <span class='hs-varid'>p</span> <span class='hs-varid'>s</span>
<a name="line-254"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span>
<a name="line-255"></a> <span class='hs-varid'>withTranslation</span> <span class='hs-varid'>p</span> <span class='hs-varop'>$</span>
<a name="line-256"></a> <span class='hs-varid'>withRotation</span> <span class='hs-varid'>theta</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-257"></a> <span class='hs-varid'>tss</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-varid'>textSize</span> <span class='hs-varid'>ss</span>
<a name="line-258"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>head</span> <span class='hs-varid'>tss</span>
<a name="line-259"></a> <span class='hs-keyword'>let</span> <span class='hs-comment'>-- widths = map textSizeWidth tss</span>
<a name="line-260"></a> <span class='hs-comment'>-- maxw = maximum widths</span>
<a name="line-261"></a> <span class='hs-varid'>maxh</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maximum</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>textSizeYBearing</span> <span class='hs-varid'>tss</span><span class='hs-layout'>)</span>
<a name="line-262"></a> <span class='hs-varid'>gap</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maxh</span> <span class='hs-varop'>/</span> <span class='hs-num'>2</span> <span class='hs-comment'>-- half-line spacing</span>
<a name="line-263"></a> <span class='hs-varid'>totalHeight</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>num</span><span class='hs-varop'>*</span><span class='hs-varid'>maxh</span> <span class='hs-varop'>+</span>
<a name="line-264"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>num</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-varop'>*</span><span class='hs-varid'>gap</span>
<a name="line-265"></a> <span class='hs-varid'>ys</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>take</span> <span class='hs-varid'>num</span> <span class='hs-layout'>(</span><span class='hs-varid'>unfoldr</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>y</span><span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span><span class='hs-comment'>-</span><span class='hs-varid'>gap</span><span class='hs-comment'>-</span><span class='hs-varid'>maxh</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-266"></a> <span class='hs-layout'>(</span><span class='hs-varid'>yinit</span> <span class='hs-varid'>vta</span> <span class='hs-varid'>ts</span> <span class='hs-varid'>totalHeight</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-267"></a> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>adjustTextX</span> <span class='hs-varid'>hta</span><span class='hs-layout'>)</span> <span class='hs-varid'>tss</span>
<a name="line-268"></a> <span class='hs-varid'>sequence_</span> <span class='hs-layout'>(</span><span class='hs-varid'>zipWith3</span> <span class='hs-varid'>drawT</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>ys</span> <span class='hs-varid'>ss</span><span class='hs-layout'>)</span>
<a name="line-269"></a> <span class='hs-keyword'>where</span>
<a name="line-270"></a> <span class='hs-varid'>ss</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lines</span> <span class='hs-varid'>s</span>
<a name="line-271"></a> <span class='hs-varid'>num</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ss</span>
<a name="line-272"></a>
<a name="line-273"></a> <span class='hs-varid'>drawT</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>drawText</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-274"></a> <span class='hs-varid'>theta</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>angle</span><span class='hs-varop'>*</span><span class='hs-varid'>pi</span><span class='hs-varop'>/</span><span class='hs-num'>180.0</span>
<a name="line-275"></a>
<a name="line-276"></a> <span class='hs-varid'>yinit</span> <span class='hs-conid'>VTA_Top</span> <span class='hs-varid'>ts</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>textSizeAscent</span> <span class='hs-varid'>ts</span>
<a name="line-277"></a> <span class='hs-varid'>yinit</span> <span class='hs-conid'>VTA_BaseLine</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-278"></a> <span class='hs-varid'>yinit</span> <span class='hs-conid'>VTA_Centre</span> <span class='hs-varid'>ts</span> <span class='hs-varid'>height</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>height</span> <span class='hs-varop'>/</span> <span class='hs-num'>2</span> <span class='hs-varop'>+</span> <span class='hs-varid'>textSizeAscent</span> <span class='hs-varid'>ts</span>
<a name="line-279"></a> <span class='hs-varid'>yinit</span> <span class='hs-conid'>VTA_Bottom</span> <span class='hs-varid'>ts</span> <span class='hs-varid'>height</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>height</span> <span class='hs-varop'>+</span> <span class='hs-varid'>textSizeAscent</span> <span class='hs-varid'>ts</span>
<a name="line-280"></a>
<a name="line-281"></a><a name="adjustText"></a><span class='hs-comment'>-- | Calculate the correct offset to align the text anchor.</span>
<a name="line-282"></a><span class='hs-definition'>adjustText</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>VTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TextSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Point</span>
<a name="line-283"></a><span class='hs-definition'>adjustText</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Point</span> <span class='hs-layout'>(</span><span class='hs-varid'>adjustTextX</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>adjustTextY</span> <span class='hs-varid'>vta</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-284"></a>
<a name="line-285"></a><a name="adjustTextX"></a><span class='hs-comment'>-- | Calculate the correct offset to align the horizontal anchor.</span>
<a name="line-286"></a><span class='hs-definition'>adjustTextX</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TextSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span>
<a name="line-287"></a><span class='hs-definition'>adjustTextX</span> <span class='hs-conid'>HTA_Left</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-288"></a><span class='hs-definition'>adjustTextX</span> <span class='hs-conid'>HTA_Centre</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-</span> <span class='hs-layout'>(</span><span class='hs-varid'>textSizeWidth</span> <span class='hs-varid'>ts</span> <span class='hs-varop'>/</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span>
<a name="line-289"></a><span class='hs-definition'>adjustTextX</span> <span class='hs-conid'>HTA_Right</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-</span> <span class='hs-varid'>textSizeWidth</span> <span class='hs-varid'>ts</span>
<a name="line-290"></a>
<a name="line-291"></a><a name="adjustTextY"></a><span class='hs-comment'>-- | Calculate the correct offset to align the vertical anchor.</span>
<a name="line-292"></a><span class='hs-definition'>adjustTextY</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>VTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>TextSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span>
<a name="line-293"></a><span class='hs-definition'>adjustTextY</span> <span class='hs-conid'>VTA_Top</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>textSizeAscent</span> <span class='hs-varid'>ts</span>
<a name="line-294"></a><span class='hs-definition'>adjustTextY</span> <span class='hs-conid'>VTA_Centre</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-</span> <span class='hs-varid'>textSizeYBearing</span> <span class='hs-varid'>ts</span> <span class='hs-varop'>/</span> <span class='hs-num'>2</span>
<a name="line-295"></a><span class='hs-definition'>adjustTextY</span> <span class='hs-conid'>VTA_BaseLine</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-296"></a><span class='hs-definition'>adjustTextY</span> <span class='hs-conid'>VTA_Bottom</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-</span> <span class='hs-varid'>textSizeDescent</span> <span class='hs-varid'>ts</span>
<a name="line-297"></a>
<a name="line-298"></a><a name="textDrawRect"></a><span class='hs-comment'>-- | Return the bounding rectangle for a text string positioned</span>
<a name="line-299"></a><span class='hs-comment'>-- where it would be drawn by 'drawText'.</span>
<a name="line-300"></a><span class='hs-comment'>-- See 'textSize'.</span>
<a name="line-301"></a><span class='hs-definition'>textDrawRect</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>VTextAnchor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Point</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>Rect</span>
<a name="line-302"></a><span class='hs-definition'>textDrawRect</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>vta</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-303"></a> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>textSize</span> <span class='hs-varid'>s</span>
<a name="line-304"></a> <span class='hs-comment'>-- This does not account for the pixel width of the label; e.g.</span>
<a name="line-305"></a> <span class='hs-comment'>-- with a label "bread" and a large-enough foint size (e.g. 36)</span>
<a name="line-306"></a> <span class='hs-comment'>-- I have seen the right-hand edge of the bounding box go through</span>
<a name="line-307"></a> <span class='hs-comment'>-- the vertical part of the 'd' character (see chart-tests/tests/Test8.hs</span>
<a name="line-308"></a> <span class='hs-comment'>-- and bump up the label size).</span>
<a name="line-309"></a> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span><span class='hs-layout'>,</span><span class='hs-varid'>h</span><span class='hs-layout'>,</span><span class='hs-varid'>dh</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>textSizeWidth</span> <span class='hs-varid'>ts</span><span class='hs-layout'>,</span> <span class='hs-varid'>textSizeHeight</span> <span class='hs-varid'>ts</span><span class='hs-layout'>,</span> <span class='hs-varid'>textSizeDescent</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-310"></a> <span class='hs-varid'>lx</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>adjustTextX</span> <span class='hs-varid'>hta</span> <span class='hs-varid'>ts</span>
<a name="line-311"></a> <span class='hs-varid'>ly</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>adjustTextY</span> <span class='hs-varid'>vta</span> <span class='hs-varid'>ts</span>
<a name="line-312"></a> <span class='hs-layout'>(</span><span class='hs-varid'>x'</span><span class='hs-layout'>,</span><span class='hs-varid'>y'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>+</span> <span class='hs-varid'>lx</span><span class='hs-layout'>,</span> <span class='hs-varid'>y</span> <span class='hs-varop'>+</span> <span class='hs-varid'>ly</span> <span class='hs-varop'>+</span> <span class='hs-varid'>dh</span><span class='hs-layout'>)</span>
<a name="line-313"></a> <span class='hs-varid'>p1</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Point</span> <span class='hs-varid'>x'</span> <span class='hs-layout'>(</span><span class='hs-varid'>y'</span> <span class='hs-comment'>-</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span>
<a name="line-314"></a> <span class='hs-varid'>p2</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Point</span> <span class='hs-layout'>(</span><span class='hs-varid'>x'</span> <span class='hs-varop'>+</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varid'>y'</span>
<a name="line-315"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Rect</span> <span class='hs-varid'>p1</span> <span class='hs-varid'>p2</span>
<a name="line-316"></a>
<a name="line-317"></a><a name="textDimension"></a><span class='hs-comment'>-- | Get the width and height of the string when rendered.</span>
<a name="line-318"></a><span class='hs-comment'>-- See 'textSize'.</span>
<a name="line-319"></a><span class='hs-definition'>textDimension</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>RectSize</span>
<a name="line-320"></a><span class='hs-definition'>textDimension</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-321"></a> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>textSize</span> <span class='hs-varid'>s</span>
<a name="line-322"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>textSizeWidth</span> <span class='hs-varid'>ts</span><span class='hs-layout'>,</span> <span class='hs-varid'>textSizeHeight</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-323"></a>
<a name="line-324"></a><span class='hs-comment'>-- -----------------------------------------------------------------------</span>
<a name="line-325"></a><span class='hs-comment'>-- Point Types and Drawing</span>
<a name="line-326"></a><span class='hs-comment'>-- -----------------------------------------------------------------------</span>
<a name="line-327"></a>
<a name="line-328"></a><a name="PointShape"></a><span class='hs-comment'>-- | The different shapes a point can have.</span>
<a name="line-329"></a><a name="PointShape"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>PointShape</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PointShapeCircle</span> <span class='hs-comment'>-- ^ A circle.</span>
<a name="line-330"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PointShapePolygon</span> <span class='hs-conid'>Int</span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ Number of vertices and is right-side-up?</span>
<a name="line-331"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PointShapePlus</span> <span class='hs-comment'>-- ^ A plus sign.</span>
<a name="line-332"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PointShapeCross</span> <span class='hs-comment'>-- ^ A cross.</span>
<a name="line-333"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PointShapeStar</span> <span class='hs-comment'>-- ^ Combination of a cross and a plus.</span>
<a name="line-334"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PointShapeArrowHead</span> <span class='hs-conid'>Double</span>
<a name="line-335"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>PointShapeEllipse</span> <span class='hs-conid'>Double</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Ratio of minor to major axis and rotation</span>
<a name="line-336"></a>
<a name="line-337"></a><a name="PointStyle"></a><span class='hs-comment'>-- | Abstract data type for the style of a plotted point.</span>
<a name="line-338"></a><a name="PointStyle"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>PointStyle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PointStyle</span>
<a name="line-339"></a> <span class='hs-layout'>{</span> <span class='hs-sel'>_point_color</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span>
<a name="line-340"></a> <span class='hs-comment'>-- ^ The color to fill the point with.</span>
<a name="line-341"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_point_border_color</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span>
<a name="line-342"></a> <span class='hs-comment'>-- ^ The color to stroke the outline with.</span>
<a name="line-343"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_point_border_width</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span>
<a name="line-344"></a> <span class='hs-comment'>-- ^ The width of the outline.</span>
<a name="line-345"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_point_radius</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span>
<a name="line-346"></a> <span class='hs-comment'>-- ^ The radius of the tightest surrounding circle of the point.</span>
<a name="line-347"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_point_shape</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PointShape</span>
<a name="line-348"></a> <span class='hs-comment'>-- ^ The shape.</span>
<a name="line-349"></a> <span class='hs-layout'>}</span>
<a name="line-350"></a>
<a name="line-351"></a><a name="instance%20Default%20PointStyle"></a><span class='hs-comment'>-- | Default style to use for points.</span>
<a name="line-352"></a><a name="instance%20Default%20PointStyle"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Default</span> <span class='hs-conid'>PointStyle</span> <span class='hs-keyword'>where</span>
<a name="line-353"></a> <span class='hs-varid'>def</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PointStyle</span>
<a name="line-354"></a> <span class='hs-layout'>{</span> <span class='hs-sel'>_point_color</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>opaque</span> <span class='hs-varid'>black</span>
<a name="line-355"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_point_border_color</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>transparent</span>
<a name="line-356"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_point_border_width</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-357"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_point_radius</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span>
<a name="line-358"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_point_shape</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PointShapeCircle</span>
<a name="line-359"></a> <span class='hs-layout'>}</span>
<a name="line-360"></a>
<a name="line-361"></a><a name="drawPoint"></a><span class='hs-comment'>-- | Draw a single point at the given location.</span>
<a name="line-362"></a><span class='hs-definition'>drawPoint</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PointStyle</span> <span class='hs-comment'>-- ^ Style to use when rendering the point.</span>
<a name="line-363"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Point</span> <span class='hs-comment'>-- ^ Position of the point to render.</span>
<a name="line-364"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>BackendProgram</span> <span class='hs-conid'>()</span>
<a name="line-365"></a><span class='hs-definition'>drawPoint</span> <span class='hs-varid'>ps</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>PointStyle</span> <span class='hs-varid'>cl</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>r</span> <span class='hs-varid'>shape</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withPointStyle</span> <span class='hs-varid'>ps</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-366"></a> <span class='hs-varid'>p'</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>alignStrokePoint</span> <span class='hs-varid'>p</span>
<a name="line-367"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>shape</span> <span class='hs-keyword'>of</span>
<a name="line-368"></a> <span class='hs-conid'>PointShapeCircle</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-369"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>path</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>arc</span> <span class='hs-varid'>p'</span> <span class='hs-varid'>r</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-num'>2</span><span class='hs-varop'>*</span><span class='hs-varid'>pi</span><span class='hs-layout'>)</span>
<a name="line-370"></a> <span class='hs-varid'>fillPath</span> <span class='hs-varid'>path</span>
<a name="line-371"></a> <span class='hs-varid'>strokePath</span> <span class='hs-varid'>path</span>
<a name="line-372"></a> <span class='hs-conid'>PointShapePolygon</span> <span class='hs-varid'>sides</span> <span class='hs-varid'>isrot</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-373"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>intToAngle</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span>
<a name="line-374"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>isrot</span>
<a name="line-375"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span> <span class='hs-varop'>*</span> <span class='hs-num'>2</span><span class='hs-varop'>*</span><span class='hs-varid'>pi</span><span class='hs-varop'>/</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sides</span>
<a name="line-376"></a> <span class='hs-keyword'>else</span> <span class='hs-layout'>(</span><span class='hs-num'>0.5</span> <span class='hs-varop'>+</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span><span class='hs-varop'>*</span><span class='hs-num'>2</span><span class='hs-varop'>*</span><span class='hs-varid'>pi</span><span class='hs-varop'>/</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sides</span>
<a name="line-377"></a> <span class='hs-varid'>angles</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>intToAngle</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>0</span> <span class='hs-keyglyph'>..</span> <span class='hs-varid'>sides</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-keyglyph'>]</span>
<a name="line-378"></a> <span class='hs-layout'>(</span><span class='hs-varid'>p1</span><span class='hs-conop'>:</span><span class='hs-varid'>p1s</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Point</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span> <span class='hs-varop'>+</span> <span class='hs-varid'>r</span> <span class='hs-varop'>*</span> <span class='hs-varid'>sin</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-379"></a> <span class='hs-layout'>(</span><span class='hs-varid'>y</span> <span class='hs-varop'>+</span> <span class='hs-varid'>r</span> <span class='hs-varop'>*</span> <span class='hs-varid'>cos</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>angles</span>
<a name="line-380"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>path</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>G</span><span class='hs-varop'>.</span><span class='hs-varid'>moveTo</span> <span class='hs-varid'>p1</span> <span class='hs-varop'><></span> <span class='hs-varid'>mconcat</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-varid'>lineTo</span> <span class='hs-varid'>p1s</span><span class='hs-layout'>)</span> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo</span> <span class='hs-varid'>p1</span>
<a name="line-381"></a> <span class='hs-varid'>fillPath</span> <span class='hs-varid'>path</span>
<a name="line-382"></a> <span class='hs-varid'>strokePath</span> <span class='hs-varid'>path</span>
<a name="line-383"></a> <span class='hs-conid'>PointShapeArrowHead</span> <span class='hs-varid'>theta</span> <span class='hs-keyglyph'>-></span>
<a name="line-384"></a> <span class='hs-varid'>withTranslation</span> <span class='hs-varid'>p</span> <span class='hs-varop'>$</span> <span class='hs-varid'>withRotation</span> <span class='hs-layout'>(</span><span class='hs-varid'>theta</span> <span class='hs-comment'>-</span> <span class='hs-varid'>pi</span><span class='hs-varop'>/</span><span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-385"></a> <span class='hs-varid'>drawPoint</span> <span class='hs-layout'>(</span><span class='hs-varid'>filledPolygon</span> <span class='hs-varid'>r</span> <span class='hs-num'>3</span> <span class='hs-conid'>True</span> <span class='hs-varid'>cl</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-386"></a> <span class='hs-conid'>PointShapePlus</span> <span class='hs-keyglyph'>-></span>
<a name="line-387"></a> <span class='hs-varid'>strokePath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>moveTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-varop'>+</span><span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span>
<a name="line-388"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-comment'>-</span><span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span>
<a name="line-389"></a> <span class='hs-varop'><></span> <span class='hs-varid'>moveTo'</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-comment'>-</span><span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-390"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-varop'>+</span><span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-391"></a> <span class='hs-conid'>PointShapeCross</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-392"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>rad</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>r</span> <span class='hs-varop'>/</span> <span class='hs-varid'>sqrt</span> <span class='hs-num'>2</span>
<a name="line-393"></a> <span class='hs-varid'>strokePath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>moveTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-varop'>+</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-varop'>+</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span>
<a name="line-394"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-comment'>-</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-comment'>-</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span>
<a name="line-395"></a> <span class='hs-varop'><></span> <span class='hs-varid'>moveTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-varop'>+</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-comment'>-</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span>
<a name="line-396"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-comment'>-</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-varop'>+</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span>
<a name="line-397"></a> <span class='hs-conid'>PointShapeStar</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-398"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>rad</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>r</span> <span class='hs-varop'>/</span> <span class='hs-varid'>sqrt</span> <span class='hs-num'>2</span>
<a name="line-399"></a> <span class='hs-varid'>strokePath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>moveTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-varop'>+</span><span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span>
<a name="line-400"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-comment'>-</span><span class='hs-varid'>r</span><span class='hs-layout'>)</span> <span class='hs-varid'>y</span>
<a name="line-401"></a> <span class='hs-varop'><></span> <span class='hs-varid'>moveTo'</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-comment'>-</span><span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-402"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-varop'>+</span><span class='hs-varid'>r</span><span class='hs-layout'>)</span>
<a name="line-403"></a> <span class='hs-varop'><></span> <span class='hs-varid'>moveTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-varop'>+</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-varop'>+</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span>
<a name="line-404"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-comment'>-</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-comment'>-</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span>
<a name="line-405"></a> <span class='hs-varop'><></span> <span class='hs-varid'>moveTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-varop'>+</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-comment'>-</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span>
<a name="line-406"></a> <span class='hs-varop'><></span> <span class='hs-varid'>lineTo'</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-comment'>-</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>y</span><span class='hs-varop'>+</span><span class='hs-varid'>rad</span><span class='hs-layout'>)</span>
<a name="line-407"></a> <span class='hs-conid'>PointShapeEllipse</span> <span class='hs-varid'>b</span> <span class='hs-varid'>theta</span> <span class='hs-keyglyph'>-></span>
<a name="line-408"></a> <span class='hs-varid'>withTranslation</span> <span class='hs-varid'>p</span> <span class='hs-varop'>$</span> <span class='hs-varid'>withRotation</span> <span class='hs-varid'>theta</span> <span class='hs-varop'>$</span> <span class='hs-varid'>withScaleX</span> <span class='hs-varid'>b</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-409"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>path</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>arc</span> <span class='hs-layout'>(</span><span class='hs-conid'>Point</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-num'>2</span><span class='hs-varop'>*</span><span class='hs-varid'>pi</span><span class='hs-layout'>)</span>
<a name="line-410"></a> <span class='hs-varid'>fillPath</span> <span class='hs-varid'>path</span>
<a name="line-411"></a> <span class='hs-varid'>strokePath</span> <span class='hs-varid'>path</span>
<a name="line-412"></a>
<a name="line-413"></a><span class='hs-comment'>-- -----------------------------------------------------------------------</span>
<a name="line-414"></a><span class='hs-comment'>-- Style Helpers</span>
<a name="line-415"></a><span class='hs-comment'>-- -----------------------------------------------------------------------</span>
<a name="line-416"></a>
<a name="line-417"></a><a name="defaultColorSeq"></a><span class='hs-comment'>-- | The default sequence of colours to use when plotings different data sets</span>
<a name="line-418"></a><span class='hs-comment'>-- in a graph.</span>
<a name="line-419"></a><span class='hs-definition'>defaultColorSeq</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span><span class='hs-keyglyph'>]</span>
<a name="line-420"></a><span class='hs-definition'>defaultColorSeq</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>cycle</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>opaque</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>blue</span><span class='hs-layout'>,</span> <span class='hs-varid'>red</span><span class='hs-layout'>,</span> <span class='hs-varid'>green</span><span class='hs-layout'>,</span> <span class='hs-varid'>yellow</span><span class='hs-layout'>,</span> <span class='hs-varid'>cyan</span><span class='hs-layout'>,</span> <span class='hs-varid'>magenta</span><span class='hs-keyglyph'>]</span>
<a name="line-421"></a>
<a name="line-422"></a><a name="solidLine"></a><span class='hs-comment'>-- | Create a solid line style (not dashed).</span>
<a name="line-423"></a><span class='hs-definition'>solidLine</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Width of line.</span>
<a name="line-424"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Colour of line.</span>
<a name="line-425"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>LineStyle</span>
<a name="line-426"></a><span class='hs-definition'>solidLine</span> <span class='hs-varid'>w</span> <span class='hs-varid'>cl</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>LineStyle</span> <span class='hs-varid'>w</span> <span class='hs-varid'>cl</span> <span class='hs-conid'>[]</span> <span class='hs-conid'>LineCapButt</span> <span class='hs-conid'>LineJoinMiter</span>
<a name="line-427"></a>
<a name="line-428"></a><a name="dashedLine"></a><span class='hs-comment'>-- | Create a dashed line style.</span>
<a name="line-429"></a><span class='hs-definition'>dashedLine</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Width of line.</span>
<a name="line-430"></a> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Double</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ The dash pattern in device coordinates.</span>
<a name="line-431"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Colour of line.</span>
<a name="line-432"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>LineStyle</span>
<a name="line-433"></a><span class='hs-definition'>dashedLine</span> <span class='hs-varid'>w</span> <span class='hs-varid'>ds</span> <span class='hs-varid'>cl</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>LineStyle</span> <span class='hs-varid'>w</span> <span class='hs-varid'>cl</span> <span class='hs-varid'>ds</span> <span class='hs-conid'>LineCapButt</span> <span class='hs-conid'>LineJoinMiter</span>
<a name="line-434"></a>
<a name="line-435"></a><a name="filledCircles"></a><span class='hs-comment'>-- | Style for filled circle points.</span>
<a name="line-436"></a><span class='hs-definition'>filledCircles</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Radius of circle.</span>
<a name="line-437"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Fill colour.</span>
<a name="line-438"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PointStyle</span>
<a name="line-439"></a><span class='hs-definition'>filledCircles</span> <span class='hs-varid'>radius</span> <span class='hs-varid'>cl</span> <span class='hs-keyglyph'>=</span>
<a name="line-440"></a> <span class='hs-conid'>PointStyle</span> <span class='hs-varid'>cl</span> <span class='hs-varid'>transparent</span> <span class='hs-num'>0</span> <span class='hs-varid'>radius</span> <span class='hs-conid'>PointShapeCircle</span>
<a name="line-441"></a>
<a name="line-442"></a><a name="hollowCircles"></a><span class='hs-comment'>-- | Style for stroked circle points.</span>
<a name="line-443"></a><span class='hs-definition'>hollowCircles</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Radius of circle.</span>
<a name="line-444"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Thickness of line.</span>
<a name="line-445"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- Colour of line.</span>
<a name="line-446"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PointStyle</span>
<a name="line-447"></a><span class='hs-definition'>hollowCircles</span> <span class='hs-varid'>radius</span> <span class='hs-varid'>w</span> <span class='hs-varid'>cl</span> <span class='hs-keyglyph'>=</span>
<a name="line-448"></a> <span class='hs-conid'>PointStyle</span> <span class='hs-varid'>transparent</span> <span class='hs-varid'>cl</span> <span class='hs-varid'>w</span> <span class='hs-varid'>radius</span> <span class='hs-conid'>PointShapeCircle</span>
<a name="line-449"></a>
<a name="line-450"></a><a name="hollowPolygon"></a><span class='hs-comment'>-- | Style for stroked polygon points.</span>
<a name="line-451"></a><span class='hs-definition'>hollowPolygon</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Radius of circle.</span>
<a name="line-452"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Thickness of line.</span>
<a name="line-453"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Number of vertices.</span>
<a name="line-454"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ Is right-side-up?</span>
<a name="line-455"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Colour of line.</span>
<a name="line-456"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PointStyle</span>
<a name="line-457"></a><span class='hs-definition'>hollowPolygon</span> <span class='hs-varid'>radius</span> <span class='hs-varid'>w</span> <span class='hs-varid'>sides</span> <span class='hs-varid'>isrot</span> <span class='hs-varid'>cl</span> <span class='hs-keyglyph'>=</span>
<a name="line-458"></a> <span class='hs-conid'>PointStyle</span> <span class='hs-varid'>transparent</span> <span class='hs-varid'>cl</span> <span class='hs-varid'>w</span> <span class='hs-varid'>radius</span> <span class='hs-layout'>(</span><span class='hs-conid'>PointShapePolygon</span> <span class='hs-varid'>sides</span> <span class='hs-varid'>isrot</span><span class='hs-layout'>)</span>
<a name="line-459"></a>
<a name="line-460"></a><a name="filledPolygon"></a><span class='hs-comment'>-- | Style for filled polygon points.</span>
<a name="line-461"></a><span class='hs-definition'>filledPolygon</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Radius of circle.</span>
<a name="line-462"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ Number of vertices.</span>
<a name="line-463"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ Is right-side-up?</span>
<a name="line-464"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Fill color.</span>
<a name="line-465"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PointStyle</span>
<a name="line-466"></a><span class='hs-definition'>filledPolygon</span> <span class='hs-varid'>radius</span> <span class='hs-varid'>sides</span> <span class='hs-varid'>isrot</span> <span class='hs-varid'>cl</span> <span class='hs-keyglyph'>=</span>
<a name="line-467"></a> <span class='hs-conid'>PointStyle</span> <span class='hs-varid'>cl</span> <span class='hs-varid'>transparent</span> <span class='hs-num'>0</span> <span class='hs-varid'>radius</span> <span class='hs-layout'>(</span><span class='hs-conid'>PointShapePolygon</span> <span class='hs-varid'>sides</span> <span class='hs-varid'>isrot</span><span class='hs-layout'>)</span>
<a name="line-468"></a>
<a name="line-469"></a><a name="plusses"></a><span class='hs-comment'>-- | Plus sign point style.</span>
<a name="line-470"></a><span class='hs-definition'>plusses</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Radius of tightest surrounding circle.</span>
<a name="line-471"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Thickness of line.</span>
<a name="line-472"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Color of line.</span>
<a name="line-473"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PointStyle</span>
<a name="line-474"></a><span class='hs-definition'>plusses</span> <span class='hs-varid'>radius</span> <span class='hs-varid'>w</span> <span class='hs-varid'>cl</span> <span class='hs-keyglyph'>=</span>
<a name="line-475"></a> <span class='hs-conid'>PointStyle</span> <span class='hs-varid'>transparent</span> <span class='hs-varid'>cl</span> <span class='hs-varid'>w</span> <span class='hs-varid'>radius</span> <span class='hs-conid'>PointShapePlus</span>
<a name="line-476"></a>
<a name="line-477"></a><a name="exes"></a><span class='hs-comment'>-- | Cross point style.</span>
<a name="line-478"></a><span class='hs-definition'>exes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Radius of circle.</span>
<a name="line-479"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Thickness of line.</span>
<a name="line-480"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Color of line.</span>
<a name="line-481"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PointStyle</span>
<a name="line-482"></a><span class='hs-definition'>exes</span> <span class='hs-varid'>radius</span> <span class='hs-varid'>w</span> <span class='hs-varid'>cl</span> <span class='hs-keyglyph'>=</span>
<a name="line-483"></a> <span class='hs-conid'>PointStyle</span> <span class='hs-varid'>transparent</span> <span class='hs-varid'>cl</span> <span class='hs-varid'>w</span> <span class='hs-varid'>radius</span> <span class='hs-conid'>PointShapeCross</span>
<a name="line-484"></a>
<a name="line-485"></a><a name="stars"></a><span class='hs-comment'>-- | Combination of plus and cross point style.</span>
<a name="line-486"></a><span class='hs-definition'>stars</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Radius of circle.</span>
<a name="line-487"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Thickness of line.</span>
<a name="line-488"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Color of line.</span>
<a name="line-489"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PointStyle</span>
<a name="line-490"></a><span class='hs-definition'>stars</span> <span class='hs-varid'>radius</span> <span class='hs-varid'>w</span> <span class='hs-varid'>cl</span> <span class='hs-keyglyph'>=</span>
<a name="line-491"></a> <span class='hs-conid'>PointStyle</span> <span class='hs-varid'>transparent</span> <span class='hs-varid'>cl</span> <span class='hs-varid'>w</span> <span class='hs-varid'>radius</span> <span class='hs-conid'>PointShapeStar</span>
<a name="line-492"></a>
<a name="line-493"></a><a name="arrows"></a><span class='hs-definition'>arrows</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Radius of circle.</span>
<a name="line-494"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Rotation (Tau)</span>
<a name="line-495"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Thickness of line.</span>
<a name="line-496"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span> <span class='hs-comment'>-- ^ Color of line.</span>
<a name="line-497"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PointStyle</span>
<a name="line-498"></a><span class='hs-definition'>arrows</span> <span class='hs-varid'>radius</span> <span class='hs-varid'>angle</span> <span class='hs-varid'>w</span> <span class='hs-varid'>cl</span> <span class='hs-keyglyph'>=</span>
<a name="line-499"></a> <span class='hs-conid'>PointStyle</span> <span class='hs-varid'>transparent</span> <span class='hs-varid'>cl</span> <span class='hs-varid'>w</span> <span class='hs-varid'>radius</span> <span class='hs-layout'>(</span><span class='hs-conid'>PointShapeArrowHead</span> <span class='hs-varid'>angle</span><span class='hs-layout'>)</span>
<a name="line-500"></a>
<a name="line-501"></a><a name="solidFillStyle"></a><span class='hs-comment'>-- | Fill style that fill everything this the given colour.</span>
<a name="line-502"></a><span class='hs-definition'>solidFillStyle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>AlphaColour</span> <span class='hs-conid'>Double</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FillStyle</span>
<a name="line-503"></a><span class='hs-definition'>solidFillStyle</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FillStyleSolid</span>
<a name="line-504"></a>
<a name="line-505"></a><span class='hs-varop'>$</span><span class='hs-layout'>(</span> <span class='hs-varid'>makeLenses</span> <span class='hs-chr'>'</span><span class='hs-chr'>'</span><span class='hs-conid'>PointStyle</span> <span class='hs-layout'>)</span>
</pre></body>
</html>
|