<?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://www.cs.york.ac.uk/fp/darcs/hscolour/ --> <title>Graphics/Rendering/OpenGL/GLU/Matrix.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.OpenGL.GLU.Matrix</span> <a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) Sven Panne 2002-2009</span> <a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see the file libraries/OpenGL/LICENSE)</span> <a name="line-6"></a><span class='hs-comment'>-- </span> <a name="line-7"></a><span class='hs-comment'>-- Maintainer : sven.panne@aedion.de</span> <a name="line-8"></a><span class='hs-comment'>-- Stability : stable</span> <a name="line-9"></a><span class='hs-comment'>-- Portability : portable</span> <a name="line-10"></a><span class='hs-comment'>--</span> <a name="line-11"></a><span class='hs-comment'>-- This module corresponds to chapter 4 (Matrix Manipulation) of the GLU specs.</span> <a name="line-12"></a><span class='hs-comment'>--</span> <a name="line-13"></a><span class='hs-comment'>--------------------------------------------------------------------------------</span> <a name="line-14"></a> <a name="line-15"></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'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GLU</span><span class='hs-varop'>.</span><span class='hs-conid'>Matrix</span> <span class='hs-layout'>(</span> <a name="line-16"></a> <span class='hs-varid'>ortho2D</span><span class='hs-layout'>,</span> <span class='hs-varid'>perspective</span><span class='hs-layout'>,</span> <span class='hs-varid'>lookAt</span><span class='hs-layout'>,</span> <span class='hs-varid'>pickMatrix</span><span class='hs-layout'>,</span> <a name="line-17"></a> <span class='hs-varid'>project</span><span class='hs-layout'>,</span> <span class='hs-varid'>unProject</span><span class='hs-layout'>,</span> <span class='hs-varid'>unProject4</span> <a name="line-18"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-19"></a> <a name="line-20"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Marshal</span><span class='hs-varop'>.</span><span class='hs-conid'>Alloc</span> <span class='hs-layout'>(</span> <span class='hs-varid'>alloca</span> <span class='hs-layout'>)</span> <a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Marshal</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span> <span class='hs-layout'>(</span> <span class='hs-varid'>withArray</span> <span class='hs-layout'>)</span> <a name="line-22"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Ptr</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Ptr</span> <span class='hs-layout'>)</span> <a name="line-23"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Storable</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Storable</span><span class='hs-layout'>(</span><span class='hs-varid'>peek</span><span class='hs-layout'>,</span><span class='hs-varid'>peekElemOff</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span> <a name="line-24"></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'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GL</span><span class='hs-varop'>.</span><span class='hs-conid'>BasicTypes</span> <span class='hs-layout'>(</span> <span class='hs-conid'>GLint</span><span class='hs-layout'>,</span> <span class='hs-conid'>GLdouble</span><span class='hs-layout'>,</span> <span class='hs-conid'>GLclampd</span> <span class='hs-layout'>)</span> <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'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GL</span><span class='hs-varop'>.</span><span class='hs-conid'>CoordTrans</span> <span class='hs-layout'>(</span> <a name="line-26"></a> <span class='hs-conid'>MatrixOrder</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Matrix</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>MatrixComponent</span><span class='hs-layout'>,</span> <a name="line-27"></a> <span class='hs-conid'>Vector3</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Position</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Size</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span> <a name="line-28"></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'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GL</span><span class='hs-varop'>.</span><span class='hs-conid'>Extensions</span> <span class='hs-layout'>(</span> <a name="line-29"></a> <span class='hs-conid'>FunPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>unsafePerformIO</span><span class='hs-layout'>,</span> <span class='hs-conid'>Invoker</span><span class='hs-layout'>,</span> <span class='hs-varid'>getProcAddress</span> <span class='hs-layout'>)</span> <a name="line-30"></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'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GL</span><span class='hs-varop'>.</span><span class='hs-conid'>GLboolean</span> <span class='hs-layout'>(</span> <span class='hs-varid'>unmarshalGLboolean</span> <span class='hs-layout'>)</span> <a name="line-31"></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'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GL</span><span class='hs-varop'>.</span><span class='hs-conid'>VertexSpec</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Vertex3</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Vertex4</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span> <a name="line-32"></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'>OpenGL</span><span class='hs-varop'>.</span><span class='hs-conid'>GLU</span><span class='hs-varop'>.</span><span class='hs-conid'>ErrorsInternal</span> <span class='hs-layout'>(</span> <span class='hs-varid'>recordInvalidValue</span> <span class='hs-layout'>)</span> <a name="line-33"></a> <a name="line-34"></a><span class='hs-comment'>--------------------------------------------------------------------------------</span> <a name="line-35"></a> <a name="line-36"></a><span class='hs-cpp'>#include "HsOpenGLExt.h"</span> <a name="line-37"></a> <a name="line-38"></a><span class='hs-comment'>--------------------------------------------------------------------------------</span> <a name="line-39"></a><span class='hs-comment'>-- matrix setup</span> <a name="line-40"></a> <a name="line-41"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gluOrtho2D"</span> <span class='hs-varid'>ortho2D</span> <span class='hs-keyglyph'>::</span> <a name="line-42"></a> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span> <a name="line-43"></a> <a name="line-44"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gluPerspective"</span> <span class='hs-varid'>perspective</span> <span class='hs-keyglyph'>::</span> <a name="line-45"></a> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span> <a name="line-46"></a> <a name="line-47"></a><a name="lookAt"></a><span class='hs-definition'>lookAt</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Vertex3</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Vertex3</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Vector3</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span> <a name="line-48"></a><span class='hs-definition'>lookAt</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vertex3</span> <span class='hs-varid'>eyeX</span> <span class='hs-varid'>eyeY</span> <span class='hs-varid'>eyeZ</span><span class='hs-layout'>)</span> <a name="line-49"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Vertex3</span> <span class='hs-varid'>centerX</span> <span class='hs-varid'>centerY</span> <span class='hs-varid'>centerZ</span><span class='hs-layout'>)</span> <a name="line-50"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Vector3</span> <span class='hs-varid'>upX</span> <span class='hs-varid'>upY</span> <span class='hs-varid'>upZ</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-51"></a> <span class='hs-varid'>gluLookAt</span> <span class='hs-varid'>eyeX</span> <span class='hs-varid'>eyeY</span> <span class='hs-varid'>eyeZ</span> <span class='hs-varid'>centerX</span> <span class='hs-varid'>centerY</span> <span class='hs-varid'>centerZ</span> <span class='hs-varid'>upX</span> <span class='hs-varid'>upY</span> <span class='hs-varid'>upZ</span> <a name="line-52"></a> <a name="line-53"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gluLookAt"</span> <span class='hs-varid'>gluLookAt</span> <span class='hs-keyglyph'>::</span> <a name="line-54"></a> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <a name="line-55"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <a name="line-56"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span> <a name="line-57"></a> <a name="line-58"></a><a name="pickMatrix"></a><span class='hs-definition'>pickMatrix</span> <span class='hs-keyglyph'>::</span> <a name="line-59"></a> <span class='hs-layout'>(</span><span class='hs-conid'>GLdouble</span><span class='hs-layout'>,</span> <span class='hs-conid'>GLdouble</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>GLdouble</span><span class='hs-layout'>,</span> <span class='hs-conid'>GLdouble</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Position</span><span class='hs-layout'>,</span> <span class='hs-conid'>Size</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span> <a name="line-60"></a><span class='hs-definition'>pickMatrix</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-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'>viewport</span> <span class='hs-keyglyph'>=</span> <a name="line-61"></a> <span class='hs-varid'>withViewport</span> <span class='hs-varid'>viewport</span> <span class='hs-varop'>$</span> <span class='hs-varid'>gluPickMatrix</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span> <a name="line-62"></a> <a name="line-63"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gluPickMatrix"</span> <span class='hs-varid'>gluPickMatrix</span> <span class='hs-keyglyph'>::</span> <a name="line-64"></a> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLint</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span> <a name="line-65"></a> <a name="line-66"></a><span class='hs-comment'>--------------------------------------------------------------------------------</span> <a name="line-67"></a><span class='hs-comment'>-- coordinate projection</span> <a name="line-68"></a> <a name="line-69"></a><a name="project"></a><span class='hs-definition'>project</span> <span class='hs-keyglyph'>::</span> <a name="line-70"></a> <span class='hs-conid'>Matrix</span> <span class='hs-varid'>m</span> <a name="line-71"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Vertex3</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Position</span><span class='hs-layout'>,</span> <span class='hs-conid'>Size</span><span class='hs-layout'>)</span> <a name="line-72"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vertex3</span> <span class='hs-conid'>GLdouble</span><span class='hs-layout'>)</span> <a name="line-73"></a><span class='hs-definition'>project</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vertex3</span> <span class='hs-varid'>objX</span> <span class='hs-varid'>objY</span> <span class='hs-varid'>objZ</span><span class='hs-layout'>)</span> <span class='hs-varid'>model</span> <span class='hs-varid'>proj</span> <span class='hs-varid'>viewport</span> <span class='hs-keyglyph'>=</span> <a name="line-74"></a> <span class='hs-varid'>withColumnMajor</span> <span class='hs-varid'>model</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>modelBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-75"></a> <span class='hs-varid'>withColumnMajor</span> <span class='hs-varid'>proj</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>projBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-76"></a> <span class='hs-varid'>withViewport</span> <span class='hs-varid'>viewport</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>viewBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-77"></a> <span class='hs-varid'>getVertex3</span> <span class='hs-varop'>$</span> <span class='hs-varid'>gluProject</span> <span class='hs-varid'>objX</span> <span class='hs-varid'>objY</span> <span class='hs-varid'>objZ</span> <span class='hs-varid'>modelBuf</span> <span class='hs-varid'>projBuf</span> <span class='hs-varid'>viewBuf</span> <a name="line-78"></a> <a name="line-79"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gluProject"</span> <span class='hs-varid'>gluProject</span> <span class='hs-keyglyph'>::</span> <a name="line-80"></a> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <a name="line-81"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLint</span> <a name="line-82"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>GLint</span> <a name="line-83"></a> <a name="line-84"></a><a name="unProject"></a><span class='hs-definition'>unProject</span> <span class='hs-keyglyph'>::</span> <a name="line-85"></a> <span class='hs-conid'>Matrix</span> <span class='hs-varid'>m</span> <a name="line-86"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Vertex3</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Position</span><span class='hs-layout'>,</span> <span class='hs-conid'>Size</span><span class='hs-layout'>)</span> <a name="line-87"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vertex3</span> <span class='hs-conid'>GLdouble</span><span class='hs-layout'>)</span> <a name="line-88"></a><span class='hs-definition'>unProject</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vertex3</span> <span class='hs-varid'>objX</span> <span class='hs-varid'>objY</span> <span class='hs-varid'>objZ</span><span class='hs-layout'>)</span> <span class='hs-varid'>model</span> <span class='hs-varid'>proj</span> <span class='hs-varid'>viewport</span> <span class='hs-keyglyph'>=</span> <a name="line-89"></a> <span class='hs-varid'>withColumnMajor</span> <span class='hs-varid'>model</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>modelBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-90"></a> <span class='hs-varid'>withColumnMajor</span> <span class='hs-varid'>proj</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>projBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-91"></a> <span class='hs-varid'>withViewport</span> <span class='hs-varid'>viewport</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>viewBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-92"></a> <span class='hs-varid'>getVertex3</span> <span class='hs-varop'>$</span> <span class='hs-varid'>gluUnProject</span> <span class='hs-varid'>objX</span> <span class='hs-varid'>objY</span> <span class='hs-varid'>objZ</span> <span class='hs-varid'>modelBuf</span> <span class='hs-varid'>projBuf</span> <span class='hs-varid'>viewBuf</span> <a name="line-93"></a> <a name="line-94"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gluUnProject"</span> <span class='hs-varid'>gluUnProject</span> <span class='hs-keyglyph'>::</span> <a name="line-95"></a> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <a name="line-96"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLint</span> <a name="line-97"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>GLint</span> <a name="line-98"></a> <a name="line-99"></a><a name="unProject4"></a><span class='hs-definition'>unProject4</span> <span class='hs-keyglyph'>::</span> <a name="line-100"></a> <span class='hs-conid'>Matrix</span> <span class='hs-varid'>m</span> <a name="line-101"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Vertex4</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Position</span><span class='hs-layout'>,</span> <span class='hs-conid'>Size</span><span class='hs-layout'>)</span> <a name="line-102"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLclampd</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLclampd</span> <a name="line-103"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vertex4</span> <span class='hs-conid'>GLdouble</span><span class='hs-layout'>)</span> <a name="line-104"></a><span class='hs-definition'>unProject4</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vertex4</span> <span class='hs-varid'>objX</span> <span class='hs-varid'>objY</span> <span class='hs-varid'>objZ</span> <span class='hs-varid'>clipW</span><span class='hs-layout'>)</span> <span class='hs-varid'>model</span> <span class='hs-varid'>proj</span> <span class='hs-varid'>viewport</span> <span class='hs-varid'>near</span> <span class='hs-varid'>far</span> <span class='hs-keyglyph'>=</span> <a name="line-105"></a> <span class='hs-varid'>withColumnMajor</span> <span class='hs-varid'>model</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>modelBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-106"></a> <span class='hs-varid'>withColumnMajor</span> <span class='hs-varid'>proj</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>projBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-107"></a> <span class='hs-varid'>withViewport</span> <span class='hs-varid'>viewport</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>viewBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-108"></a> <span class='hs-varid'>getVertex4</span> <span class='hs-varop'>$</span> <a name="line-109"></a> <span class='hs-varid'>gluUnProject4</span> <span class='hs-varid'>objX</span> <span class='hs-varid'>objY</span> <span class='hs-varid'>objZ</span> <span class='hs-varid'>clipW</span> <span class='hs-varid'>modelBuf</span> <span class='hs-varid'>projBuf</span> <span class='hs-varid'>viewBuf</span> <span class='hs-varid'>near</span> <span class='hs-varid'>far</span> <a name="line-110"></a> <a name="line-111"></a><span class='hs-conid'>EXTENSION_ENTRY</span><span class='hs-layout'>(</span><span class='hs-str'>"GLU 1.3"</span><span class='hs-layout'>,</span><span class='hs-varid'>gluUnProject4</span><span class='hs-layout'>,</span><span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLint</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLclampd</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GLclampd</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>GLint</span><span class='hs-layout'>)</span> <a name="line-112"></a> <a name="line-113"></a><span class='hs-comment'>--------------------------------------------------------------------------------</span> <a name="line-114"></a> <a name="line-115"></a><a name="withViewport"></a><span class='hs-definition'>withViewport</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Position</span><span class='hs-layout'>,</span> <span class='hs-conid'>Size</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLint</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span> <span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span> <a name="line-116"></a><span class='hs-definition'>withViewport</span> <span class='hs-layout'>(</span><span class='hs-conid'>Position</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span><span class='hs-layout'>,</span> <span class='hs-conid'>Size</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-117"></a> <span class='hs-varid'>withArray</span> <span class='hs-keyglyph'>[</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-varid'>fromIntegral</span> <span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'>]</span> <a name="line-118"></a> <a name="line-119"></a><a name="withColumnMajor"></a><span class='hs-definition'>withColumnMajor</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Matrix</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-conid'>MatrixComponent</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>m</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>b</span> <a name="line-120"></a><span class='hs-definition'>withColumnMajor</span> <span class='hs-varid'>mat</span> <span class='hs-varid'>act</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withMatrix</span> <span class='hs-varid'>mat</span> <span class='hs-varid'>juggle</span> <a name="line-121"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>juggle</span> <span class='hs-conid'>ColumnMajor</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>act</span> <span class='hs-varid'>p</span> <a name="line-122"></a> <span class='hs-varid'>juggle</span> <span class='hs-conid'>RowMajor</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <a name="line-123"></a> <span class='hs-varid'>transposedElems</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>peekElemOff</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>[</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>,</span> <span class='hs-num'>12</span><span class='hs-layout'>,</span> <a name="line-124"></a> <span class='hs-num'>1</span><span class='hs-layout'>,</span> <span class='hs-num'>5</span><span class='hs-layout'>,</span> <span class='hs-num'>9</span><span class='hs-layout'>,</span> <span class='hs-num'>13</span><span class='hs-layout'>,</span> <a name="line-125"></a> <span class='hs-num'>2</span><span class='hs-layout'>,</span> <span class='hs-num'>6</span><span class='hs-layout'>,</span> <span class='hs-num'>10</span><span class='hs-layout'>,</span> <span class='hs-num'>14</span><span class='hs-layout'>,</span> <a name="line-126"></a> <span class='hs-num'>3</span><span class='hs-layout'>,</span> <span class='hs-num'>7</span><span class='hs-layout'>,</span> <span class='hs-num'>11</span><span class='hs-layout'>,</span> <span class='hs-num'>15</span> <span class='hs-keyglyph'>]</span> <a name="line-127"></a> <span class='hs-varid'>withArray</span> <span class='hs-varid'>transposedElems</span> <span class='hs-varid'>act</span> <a name="line-128"></a> <a name="line-129"></a><a name="getVertex3"></a><span class='hs-definition'>getVertex3</span> <span class='hs-keyglyph'>::</span> <a name="line-130"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>GLint</span><span class='hs-layout'>)</span> <a name="line-131"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vertex3</span> <span class='hs-conid'>GLdouble</span><span class='hs-layout'>)</span> <a name="line-132"></a><span class='hs-definition'>getVertex3</span> <span class='hs-varid'>act</span> <span class='hs-keyglyph'>=</span> <a name="line-133"></a> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>xBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-134"></a> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>yBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-135"></a> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>zBuf</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <a name="line-136"></a> <span class='hs-varid'>ok</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>act</span> <span class='hs-varid'>xBuf</span> <span class='hs-varid'>yBuf</span> <span class='hs-varid'>zBuf</span> <a name="line-137"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>unmarshalGLboolean</span> <span class='hs-varid'>ok</span> <a name="line-138"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>xBuf</span> <a name="line-139"></a> <span class='hs-varid'>y</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>yBuf</span> <a name="line-140"></a> <span class='hs-varid'>z</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>zBuf</span> <a name="line-141"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Vertex3</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span> <a name="line-142"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>recordInvalidValue</span> <a name="line-143"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Vertex3</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span> <a name="line-144"></a> <a name="line-145"></a><a name="getVertex4"></a><span class='hs-definition'>getVertex4</span> <span class='hs-keyglyph'>::</span> <a name="line-146"></a> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>GLdouble</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>GLint</span><span class='hs-layout'>)</span> <a name="line-147"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Vertex4</span> <span class='hs-conid'>GLdouble</span><span class='hs-layout'>)</span> <a name="line-148"></a><span class='hs-definition'>getVertex4</span> <span class='hs-varid'>act</span> <span class='hs-keyglyph'>=</span> <a name="line-149"></a> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>xBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-150"></a> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>yBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-151"></a> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>zBuf</span> <span class='hs-keyglyph'>-></span> <a name="line-152"></a> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>wBuf</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <a name="line-153"></a> <span class='hs-varid'>ok</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>act</span> <span class='hs-varid'>xBuf</span> <span class='hs-varid'>yBuf</span> <span class='hs-varid'>zBuf</span> <span class='hs-varid'>wBuf</span> <a name="line-154"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>unmarshalGLboolean</span> <span class='hs-varid'>ok</span> <a name="line-155"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>xBuf</span> <a name="line-156"></a> <span class='hs-varid'>y</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>yBuf</span> <a name="line-157"></a> <span class='hs-varid'>z</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>zBuf</span> <a name="line-158"></a> <span class='hs-varid'>w</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>wBuf</span> <a name="line-159"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Vertex4</span> <span class='hs-varid'>x</span> <span class='hs-varid'>y</span> <span class='hs-varid'>z</span> <span class='hs-varid'>w</span> <a name="line-160"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>recordInvalidValue</span> <a name="line-161"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Vertex4</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span> </pre></body> </html>
