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<pre><a name="line-1"></a>
<a name="line-2"></a><span class='hs-comment'>-- | Gloss hides the pain of drawing simple vector graphics behind a nice data type and</span>
<a name="line-3"></a><span class='hs-comment'>-- a few display functions. </span>
<a name="line-4"></a><span class='hs-comment'>--</span>
<a name="line-5"></a><span class='hs-comment'>-- Getting something on the screen is as easy as:</span>
<a name="line-6"></a><span class='hs-comment'>--</span>
<a name="line-7"></a><span class='hs-comment'>-- @</span>
<a name="line-8"></a><span class='hs-comment'>-- import Graphics.Gloss</span>
<a name="line-9"></a><span class='hs-comment'>-- main = `display` (InWindow \"Nice Window\" (200, 200) (10, 10)) `white` (`Circle` 80)</span>
<a name="line-10"></a><span class='hs-comment'>-- @</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- Once the window is open you can use the following:</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>-- * Quit - esc-key.</span>
<a name="line-15"></a><span class='hs-comment'>--</span>
<a name="line-16"></a><span class='hs-comment'>-- * Move Viewport - left-click drag, arrow keys.</span>
<a name="line-17"></a><span class='hs-comment'>--</span>
<a name="line-18"></a><span class='hs-comment'>-- * Rotate Viewport - right-click drag, control-left-click drag, or home\/end-keys.</span>
<a name="line-19"></a><span class='hs-comment'>--</span>
<a name="line-20"></a><span class='hs-comment'>-- * Zoom Viewport - mouse wheel, or page up\/down-keys.</span>
<a name="line-21"></a><span class='hs-comment'>--</span>
<a name="line-22"></a><span class='hs-comment'>-- Animations can be constructed similarly using the `animate`.</span>
<a name="line-23"></a><span class='hs-comment'>--</span>
<a name="line-24"></a><span class='hs-comment'>-- If you want to run a simulation based around finite time steps then try</span>
<a name="line-25"></a><span class='hs-comment'>-- `simulate`.</span>
<a name="line-26"></a><span class='hs-comment'>--</span>
<a name="line-27"></a><span class='hs-comment'>-- If you want to manage your own key\/mouse events then use `play`.</span>
<a name="line-28"></a><span class='hs-comment'>-- </span>
<a name="line-29"></a><span class='hs-comment'>-- Gloss uses OpenGL under the hood, but you don't have to worry about any of that.</span>
<a name="line-30"></a><span class='hs-comment'>--</span>
<a name="line-31"></a><span class='hs-comment'>-- Gloss programs should be compiled with @-threaded@, otherwise the GHC runtime</span>
<a name="line-32"></a><span class='hs-comment'>-- will limit the frame-rate to around 20Hz.</span>
<a name="line-33"></a><span class='hs-comment'>--</span>
<a name="line-34"></a><span class='hs-comment'>--</span>
<a name="line-35"></a><span class='hs-comment'>-- @Release Notes:</span>
<a name="line-36"></a><span class='hs-comment'>--</span>
<a name="line-37"></a><span class='hs-comment'>-- For 1.7.0:</span>
<a name="line-38"></a><span class='hs-comment'>-- * Tweaked circle level-of-detail reduction code.</span>
<a name="line-39"></a><span class='hs-comment'>-- * Increased frame rate cap to 100hz.</span>
<a name="line-40"></a><span class='hs-comment'>-- Thanks to Doug Burke</span>
<a name="line-41"></a><span class='hs-comment'>-- * Primitives for drawing arcs and sectors.</span>
<a name="line-42"></a><span class='hs-comment'>-- Thanks to Thomas DuBuisson</span>
<a name="line-43"></a><span class='hs-comment'>-- * IO versions of animate, simplate and play.</span>
<a name="line-44"></a><span class='hs-comment'>--</span>
<a name="line-45"></a><span class='hs-comment'>-- For 1.6.0:</span>
<a name="line-46"></a><span class='hs-comment'>-- Thanks to Anthony Cowley</span>
<a name="line-47"></a><span class='hs-comment'>-- * Full screen display mode.</span>
<a name="line-48"></a><span class='hs-comment'>-- </span>
<a name="line-49"></a><span class='hs-comment'>-- For 1.5.0:</span>
<a name="line-50"></a><span class='hs-comment'>-- * O(1) Conversion of ForeignPtrs to bitmaps.</span>
<a name="line-51"></a><span class='hs-comment'>-- * An extra flag on the Bitmap constructor allows bitmaps to be cached</span>
<a name="line-52"></a><span class='hs-comment'>-- in texture memory between frames.</span>
<a name="line-53"></a><span class='hs-comment'>--</span>
<a name="line-54"></a><span class='hs-comment'>-- For 1.4.0:</span>
<a name="line-55"></a><span class='hs-comment'>-- Thanks to Christiaan Baaij: </span>
<a name="line-56"></a><span class='hs-comment'>-- * Refactoring of Gloss internals to support multiple window manager backends.</span>
<a name="line-57"></a><span class='hs-comment'>-- * Support for using GLFW as the window library instead of GLUT.</span>
<a name="line-58"></a><span class='hs-comment'>-- GLUT is still the default, but to use GLFW install gloss with:</span>
<a name="line-59"></a><span class='hs-comment'>-- cabal install gloss --flags=\"GLFW -GLUT\"</span>
<a name="line-60"></a><span class='hs-comment'>-- @</span>
<a name="line-61"></a><span class='hs-comment'>--</span>
<a name="line-62"></a><span class='hs-comment'>-- For more information, check out <<a href="http://gloss.ouroborus.net">http://gloss.ouroborus.net</a>>.</span>
<a name="line-63"></a><span class='hs-comment'>--</span>
<a name="line-64"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span>
<a name="line-65"></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'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Picture</span>
<a name="line-66"></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'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Color</span>
<a name="line-67"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Display</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-68"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>display</span>
<a name="line-69"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>animate</span>
<a name="line-70"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>simulate</span>
<a name="line-71"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>play</span><span class='hs-layout'>)</span>
<a name="line-72"></a><span class='hs-keyword'>where</span>
<a name="line-73"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Display</span>
<a name="line-74"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Picture</span>
<a name="line-75"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Color</span>
<a name="line-76"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Interface</span><span class='hs-varop'>.</span><span class='hs-conid'>Pure</span><span class='hs-varop'>.</span><span class='hs-conid'>Display</span>
<a name="line-77"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Interface</span><span class='hs-varop'>.</span><span class='hs-conid'>Pure</span><span class='hs-varop'>.</span><span class='hs-conid'>Animate</span>
<a name="line-78"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Interface</span><span class='hs-varop'>.</span><span class='hs-conid'>Pure</span><span class='hs-varop'>.</span><span class='hs-conid'>Simulate</span>
<a name="line-79"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>Gloss</span><span class='hs-varop'>.</span><span class='hs-conid'>Interface</span><span class='hs-varop'>.</span><span class='hs-conid'>Pure</span><span class='hs-varop'>.</span><span class='hs-conid'>Game</span>
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