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<title>Graphics/Rendering/Chart/Plot/Types.hs</title>
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<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.Plot.Types</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'>-- Datatypes and functions common to the implementation of the various</span>
<a name="line-8"></a><span class='hs-comment'>-- plot types.</span>
<a name="line-9"></a><span class='hs-comment'>--</span>
<a name="line-10"></a><span class='hs-comment'>{-# LANGUAGE TemplateHaskell #-}</span>
<a name="line-11"></a>
<a name="line-12"></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'>Plot</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span><span class='hs-layout'>(</span>
<a name="line-13"></a> <span class='hs-conid'>Plot</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-14"></a> <span class='hs-varid'>joinPlot</span><span class='hs-layout'>,</span>
<a name="line-15"></a> <span class='hs-conid'>ToPlot</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-16"></a>
<a name="line-17"></a> <span class='hs-varid'>mapXY</span><span class='hs-layout'>,</span>
<a name="line-18"></a>
<a name="line-19"></a> <span class='hs-varid'>plot_render</span><span class='hs-layout'>,</span>
<a name="line-20"></a> <span class='hs-varid'>plot_legend</span><span class='hs-layout'>,</span>
<a name="line-21"></a> <span class='hs-varid'>plot_all_points</span><span class='hs-layout'>,</span>
<a name="line-22"></a>
<a name="line-23"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-24"></a>
<a name="line-25"></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>
<a name="line-26"></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'>Drawing</span>
<a name="line-27"></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-28"></a>
<a name="line-29"></a><a name="Plot"></a><span class='hs-comment'>-- | Interface to control plotting on a 2D area.</span>
<a name="line-30"></a><a name="Plot"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Plot</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Plot</span> <span class='hs-layout'>{</span>
<a name="line-31"></a>
<a name="line-32"></a> <span class='hs-comment'>-- | Given the mapping between model space coordinates and device</span>
<a name="line-33"></a> <span class='hs-comment'>-- coordinates, render this plot into a chart.</span>
<a name="line-34"></a> <span class='hs-sel'>_plot_render</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PointMapFn</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ChartBackend</span> <span class='hs-conid'>()</span><span class='hs-layout'>,</span>
<a name="line-35"></a>
<a name="line-36"></a> <span class='hs-comment'>-- | Details for how to show this plot in a legend. For each item</span>
<a name="line-37"></a> <span class='hs-comment'>-- the string is the text to show, and the function renders a</span>
<a name="line-38"></a> <span class='hs-comment'>-- graphical sample of the plot.</span>
<a name="line-39"></a> <span class='hs-sel'>_plot_legend</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span> <span class='hs-conid'>Rect</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ChartBackend</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-40"></a>
<a name="line-41"></a> <span class='hs-comment'>-- | All of the model space coordinates to be plotted. These are</span>
<a name="line-42"></a> <span class='hs-comment'>-- used to autoscale the axes where necessary.</span>
<a name="line-43"></a> <span class='hs-sel'>_plot_all_points</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>x</span><span class='hs-keyglyph'>]</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-layout'>)</span>
<a name="line-44"></a><span class='hs-layout'>}</span>
<a name="line-45"></a>
<a name="line-46"></a><a name="ToPlot"></a><span class='hs-comment'>-- | A type class abstracting the conversion of a value to a Plot.</span>
<a name="line-47"></a><a name="ToPlot"></a><span class='hs-keyword'>class</span> <span class='hs-conid'>ToPlot</span> <span class='hs-varid'>a</span> <span class='hs-keyword'>where</span>
<a name="line-48"></a> <span class='hs-varid'>toPlot</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Plot</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-49"></a>
<a name="line-50"></a><a name="instance%20ToPlot%20Plot"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>ToPlot</span> <span class='hs-conid'>Plot</span> <span class='hs-keyword'>where</span>
<a name="line-51"></a> <span class='hs-varid'>toPlot</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span>
<a name="line-52"></a>
<a name="line-53"></a><a name="joinPlot"></a><span class='hs-comment'>-- | Join any two plots together (they will share a legend).</span>
<a name="line-54"></a><span class='hs-definition'>joinPlot</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Plot</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Plot</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Plot</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span>
<a name="line-55"></a><span class='hs-definition'>joinPlot</span> <span class='hs-conid'>Plot</span><span class='hs-layout'>{</span> <span class='hs-sel'>_plot_render</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>renderP</span>
<a name="line-56"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_legend</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>legendP</span>
<a name="line-57"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_all_points</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>xsP</span><span class='hs-layout'>,</span><span class='hs-varid'>ysP</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-58"></a> <span class='hs-conid'>Plot</span><span class='hs-layout'>{</span> <span class='hs-sel'>_plot_render</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>renderQ</span>
<a name="line-59"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_legend</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>legendQ</span>
<a name="line-60"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_all_points</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>xsQ</span><span class='hs-layout'>,</span><span class='hs-varid'>ysQ</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-61"></a>
<a name="line-62"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Plot</span><span class='hs-layout'>{</span> <span class='hs-sel'>_plot_render</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>-></span> <span class='hs-varid'>renderP</span> <span class='hs-varid'>a</span> <span class='hs-varop'>>></span> <span class='hs-varid'>renderQ</span> <span class='hs-varid'>a</span>
<a name="line-63"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_legend</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>legendP</span> <span class='hs-varop'>++</span> <span class='hs-varid'>legendQ</span>
<a name="line-64"></a> <span class='hs-layout'>,</span> <span class='hs-sel'>_plot_all_points</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span> <span class='hs-varid'>xsP</span><span class='hs-varop'>++</span><span class='hs-varid'>xsQ</span><span class='hs-layout'>,</span> <span class='hs-varid'>ysP</span><span class='hs-varop'>++</span><span class='hs-varid'>ysQ</span> <span class='hs-layout'>)</span>
<a name="line-65"></a> <span class='hs-layout'>}</span>
<a name="line-66"></a>
<a name="line-67"></a>
<a name="line-68"></a><span class='hs-comment'>----------------------------------------------------------------------</span>
<a name="line-69"></a>
<a name="line-70"></a><a name="mapXY"></a><span class='hs-definition'>mapXY</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PointMapFn</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <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-conid'>Point</span>
<a name="line-71"></a><span class='hs-definition'>mapXY</span> <span class='hs-varid'>f</span> <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-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>LValue</span> <span class='hs-varid'>x</span><span class='hs-layout'>,</span> <span class='hs-conid'>LValue</span> <span class='hs-varid'>y</span><span class='hs-layout'>)</span>
<a name="line-72"></a>
<a name="line-73"></a><span class='hs-comment'>----------------------------------------------------------------------</span>
<a name="line-74"></a>
<a name="line-75"></a>
<a name="line-76"></a>
<a name="line-77"></a><span class='hs-comment'>----------------------------------------------------------------------</span>
<a name="line-78"></a>
<a name="line-79"></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'>Plot</span> <span class='hs-layout'>)</span>
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