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</script></head><body><div id="package-header"><ul class="links" id="page-menu"><li><a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html">Source</a></li><li><a href="index.html">Contents</a></li><li><a href="doc-index.html">Index</a></li></ul><p class="caption">OpenGL-2.2.3.0: A binding for the OpenGL graphics system</p></div><div id="content"><div id="module-header"><table class="info"><tr><th>Portability</th><td>portable</td></tr><tr><th>Stability</th><td>stable</td></tr><tr><th>Maintainer</th><td>sven.panne@aedion.de</td></tr></table><p class="caption">Graphics.Rendering.OpenGL.GLU.Tessellation</p></div><div id="table-of-contents"><p class="caption">Contents</p><ul><li><a href="#g:1">Polygon description
</a></li><li><a href="#g:2">Combining vertices
</a></li><li><a href="#g:3">Tessellation parameters
</a></li><li><a href="#g:4">Tessellator type
</a></li><li><a href="#g:5">Contour extraction
</a></li><li><a href="#g:6">Triangulation
</a></li><li><a href="#g:7">Tessellation into primitives
</a></li></ul></div><div id="description"><p class="caption">Description</p><div class="doc"><p>This module corresponds to chapter 5 (Polygon Tessellation) of the GLU specs.
</p></div></div><div id="synopsis"><p id="control.syn" class="caption expander" onclick="toggleSection('syn')">Synopsis</p><ul id="section.syn" class="hide" onclick="toggleSection('syn')"><li class="src short"><span class="keyword">data</span> <a href="#t:AnnotatedVertex">AnnotatedVertex</a> v = <a href="#v:AnnotatedVertex">AnnotatedVertex</a> (<a href="Graphics-Rendering-OpenGL-GL-VertexSpec.html#t:Vertex3">Vertex3</a> <a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLdouble">GLdouble</a>) v</li><li class="src short"><span class="keyword">newtype</span> <a href="#t:ComplexContour">ComplexContour</a> v = <a href="#v:ComplexContour">ComplexContour</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a> v]</li><li class="src short"><span class="keyword">newtype</span> <a href="#t:ComplexPolygon">ComplexPolygon</a> v = <a href="#v:ComplexPolygon">ComplexPolygon</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:ComplexContour">ComplexContour</a> v]</li><li class="src short"><span class="keyword">data</span> <a href="#t:WeightedProperties">WeightedProperties</a> v = <a href="#v:WeightedProperties">WeightedProperties</a> (<a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLclampf">GLclampf</a>, v) (<a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLclampf">GLclampf</a>, v) (<a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLclampf">GLclampf</a>, v) (<a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLclampf">GLclampf</a>, v)</li><li class="src short"><span class="keyword">type</span> <a href="#t:Combiner">Combiner</a> v = <a href="Graphics-Rendering-OpenGL-GL-VertexSpec.html#t:Vertex3">Vertex3</a> <a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLdouble">GLdouble</a> -> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:WeightedProperties">WeightedProperties</a> v -> v</li><li class="src short"><span class="keyword">data</span> <a href="#t:TessWinding">TessWinding</a> <ul class="subs"><li>= <a href="#v:TessWindingOdd">TessWindingOdd</a> </li><li>| <a href="#v:TessWindingNonzero">TessWindingNonzero</a> </li><li>| <a href="#v:TessWindingPositive">TessWindingPositive</a> </li><li>| <a href="#v:TessWindingNegative">TessWindingNegative</a> </li><li>| <a href="#v:TessWindingAbsGeqTwo">TessWindingAbsGeqTwo</a> </li></ul></li><li class="src short"><span class="keyword">type</span> <a href="#t:Tolerance">Tolerance</a> = <a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLdouble">GLdouble</a></li><li class="src short"><span class="keyword">type</span> <a href="#t:Tessellator">Tessellator</a> p v = <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:TessWinding">TessWinding</a> -> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Tolerance">Tolerance</a> -> <a href="Graphics-Rendering-OpenGL-GL-VertexSpec.html#t:Normal3">Normal3</a> <a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLdouble">GLdouble</a> -> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Combiner">Combiner</a> v -> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:ComplexPolygon">ComplexPolygon</a> v -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> (p v)</li><li class="src short"><span class="keyword">newtype</span> <a href="#t:SimpleContour">SimpleContour</a> v = <a href="#v:SimpleContour">SimpleContour</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a> v]</li><li class="src short"><span class="keyword">newtype</span> <a href="#t:PolygonContours">PolygonContours</a> v = <a href="#v:PolygonContours">PolygonContours</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:SimpleContour">SimpleContour</a> v]</li><li class="src short"><a href="#v:extractContours">extractContours</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-Storable.html#t:Storable">Storable</a> v => <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Tessellator">Tessellator</a> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:PolygonContours">PolygonContours</a> v</li><li class="src short"><span class="keyword">type</span> <a href="#t:TriangleVertex">TriangleVertex</a> v = <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a> (v, <a href="Graphics-Rendering-OpenGL-GL-BeginEnd.html#t:EdgeFlag">EdgeFlag</a>)</li><li class="src short"><span class="keyword">data</span> <a href="#t:Triangle">Triangle</a> v = <a href="#v:Triangle">Triangle</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:TriangleVertex">TriangleVertex</a> v) (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:TriangleVertex">TriangleVertex</a> v) (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:TriangleVertex">TriangleVertex</a> v)</li><li class="src short"><span class="keyword">newtype</span> <a href="#t:Triangulation">Triangulation</a> v = <a href="#v:Triangulation">Triangulation</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Triangle">Triangle</a> v]</li><li class="src short"><a href="#v:triangulate">triangulate</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-Storable.html#t:Storable">Storable</a> v => <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Tessellator">Tessellator</a> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Triangulation">Triangulation</a> v</li><li class="src short"><span class="keyword">data</span> <a href="#t:Primitive">Primitive</a> v = <a href="#v:Primitive">Primitive</a> <a href="Graphics-Rendering-OpenGL-GL-BeginEnd.html#t:PrimitiveMode">PrimitiveMode</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a> v]</li><li class="src short"><span class="keyword">newtype</span> <a href="#t:SimplePolygon">SimplePolygon</a> v = <a href="#v:SimplePolygon">SimplePolygon</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Primitive">Primitive</a> v]</li><li class="src short"><a href="#v:tessellate">tessellate</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-Storable.html#t:Storable">Storable</a> v => <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Tessellator">Tessellator</a> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:SimplePolygon">SimplePolygon</a> v</li></ul></div><div id="interface"><h1 id="g:1">Polygon description
</h1><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:AnnotatedVertex" class="def">AnnotatedVertex</a> v <a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#AnnotatedVertex" class="link">Source</a></p><div class="doc"><p>The basic building block in tessellation is a 3D vertex with an associated
property, e.g. color, texture coordinates, etc.
</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:AnnotatedVertex" class="def">AnnotatedVertex</a> (<a href="Graphics-Rendering-OpenGL-GL-VertexSpec.html#t:Vertex3">Vertex3</a> <a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLdouble">GLdouble</a>) v</td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:AnnotatedVertex" class="caption collapser" onclick="toggleSection('i:AnnotatedVertex')">Instances</p><div id="section.i:AnnotatedVertex" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a> v)</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a> v)</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-Storable.html#t:Storable">Storable</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-Storable.html#t:Storable">Storable</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a> v)</td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><span class="keyword">newtype</span> <a name="t:ComplexContour" class="def">ComplexContour</a> v <a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#ComplexContour" class="link">Source</a></p><div class="doc"><p>A complex contour, which can be self-intersecting and/or concave.
</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:ComplexContour" class="def">ComplexContour</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a> v]</td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:ComplexContour" class="caption collapser" onclick="toggleSection('i:ComplexContour')">Instances</p><div id="section.i:ComplexContour" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:ComplexContour">ComplexContour</a> v)</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:ComplexContour">ComplexContour</a> v)</td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><span class="keyword">newtype</span> <a name="t:ComplexPolygon" class="def">ComplexPolygon</a> v <a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#ComplexPolygon" class="link">Source</a></p><div class="doc"><p>A complex (possibly concave) polygon, represented by one or more complex
and possibly intersecting contours.
</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:ComplexPolygon" class="def">ComplexPolygon</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:ComplexContour">ComplexContour</a> v]</td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:ComplexPolygon" class="caption collapser" onclick="toggleSection('i:ComplexPolygon')">Instances</p><div id="section.i:ComplexPolygon" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:ComplexPolygon">ComplexPolygon</a> v)</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:ComplexPolygon">ComplexPolygon</a> v)</td><td class="doc empty"> </td></tr></table></div></div></div><h1 id="g:2">Combining vertices
</h1><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:WeightedProperties" class="def">WeightedProperties</a> v <a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#WeightedProperties" class="link">Source</a></p><div class="doc"><p>Four vertex properties (cf. <code><a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a></code>) with associated weigths
summing up to 1.0.
</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:WeightedProperties" class="def">WeightedProperties</a> (<a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLclampf">GLclampf</a>, v) (<a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLclampf">GLclampf</a>, v) (<a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLclampf">GLclampf</a>, v) (<a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLclampf">GLclampf</a>, v)</td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:WeightedProperties" class="caption collapser" onclick="toggleSection('i:WeightedProperties')">Instances</p><div id="section.i:WeightedProperties" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:WeightedProperties">WeightedProperties</a> v)</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:WeightedProperties">WeightedProperties</a> v)</td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><span class="keyword">type</span> <a name="t:Combiner" class="def">Combiner</a> v = <a href="Graphics-Rendering-OpenGL-GL-VertexSpec.html#t:Vertex3">Vertex3</a> <a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLdouble">GLdouble</a> -> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:WeightedProperties">WeightedProperties</a> v -> v<a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#Combiner" class="link">Source</a></p><div class="doc"><p>A function combining given vertex properties into a property for a newly
generated vertex
</p></div></div><h1 id="g:3">Tessellation parameters
</h1><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:TessWinding" class="def">TessWinding</a> <a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#TessWinding" class="link">Source</a></p><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:TessWindingOdd" class="def">TessWindingOdd</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a name="v:TessWindingNonzero" class="def">TessWindingNonzero</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a name="v:TessWindingPositive" class="def">TessWindingPositive</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a name="v:TessWindingNegative" class="def">TessWindingNegative</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a name="v:TessWindingAbsGeqTwo" class="def">TessWindingAbsGeqTwo</a></td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:TessWinding" class="caption collapser" onclick="toggleSection('i:TessWinding')">Instances</p><div id="section.i:TessWinding" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:TessWinding">TessWinding</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:TessWinding">TessWinding</a></td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Text-Show.html#t:Show">Show</a> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:TessWinding">TessWinding</a></td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><span class="keyword">type</span> <a name="t:Tolerance" class="def">Tolerance</a> = <a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLdouble">GLdouble</a><a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#Tolerance" class="link">Source</a></p><div class="doc"><p>The relative tolerance under which two vertices can be combined (see
<code><a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Combiner">Combiner</a></code>). Multiplication with the largest coordinate magnitude of all
polygon vertices yields the maximum distance between two mergeable vertices.
</p><p>Note that merging is optional and the tolerance is only a hint.
</p></div></div><h1 id="g:4">Tessellator type
</h1><div class="top"><p class="src"><span class="keyword">type</span> <a name="t:Tessellator" class="def">Tessellator</a> p v = <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:TessWinding">TessWinding</a> -> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Tolerance">Tolerance</a> -> <a href="Graphics-Rendering-OpenGL-GL-VertexSpec.html#t:Normal3">Normal3</a> <a href="Graphics-Rendering-OpenGL-GL-BasicTypes.html#t:GLdouble">GLdouble</a> -> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Combiner">Combiner</a> v -> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:ComplexPolygon">ComplexPolygon</a> v -> <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/System-IO.html#t:IO">IO</a> (p v)<a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#Tessellator" class="link">Source</a></p><div class="doc"><p>A general tessellator type.
</p><p>Before tessellation of a complex polygon, all its vertices are projected into
a plane perpendicular to the given normal. If the given normal is
<code>Normal3 0 0 0</code>, a fitting plane of all vertices is used.
</p></div></div><h1 id="g:5">Contour extraction
</h1><div class="top"><p class="src"><span class="keyword">newtype</span> <a name="t:SimpleContour" class="def">SimpleContour</a> v <a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#SimpleContour" class="link">Source</a></p><div class="doc"><p>A simple, non-self-intersecting contour
</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:SimpleContour" class="def">SimpleContour</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a> v]</td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:SimpleContour" class="caption collapser" onclick="toggleSection('i:SimpleContour')">Instances</p><div id="section.i:SimpleContour" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:SimpleContour">SimpleContour</a> v)</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:SimpleContour">SimpleContour</a> v)</td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><span class="keyword">newtype</span> <a name="t:PolygonContours" class="def">PolygonContours</a> v <a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#PolygonContours" class="link">Source</a></p><div class="doc"><p>The contours of a complex polygon, represented by one or more
non-intersecting simple contours
</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:PolygonContours" class="def">PolygonContours</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:SimpleContour">SimpleContour</a> v]</td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:PolygonContours" class="caption collapser" onclick="toggleSection('i:PolygonContours')">Instances</p><div id="section.i:PolygonContours" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:PolygonContours">PolygonContours</a> v)</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:PolygonContours">PolygonContours</a> v)</td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><a name="v:extractContours" class="def">extractContours</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-Storable.html#t:Storable">Storable</a> v => <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Tessellator">Tessellator</a> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:PolygonContours">PolygonContours</a> v<a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#extractContours" class="link">Source</a></p></div><h1 id="g:6">Triangulation
</h1><div class="top"><p class="src"><span class="keyword">type</span> <a name="t:TriangleVertex" class="def">TriangleVertex</a> v = <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a> (v, <a href="Graphics-Rendering-OpenGL-GL-BeginEnd.html#t:EdgeFlag">EdgeFlag</a>)<a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#TriangleVertex" class="link">Source</a></p><div class="doc"><p>A triangle vertex with additional information about the edge it begins
</p></div></div><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:Triangle" class="def">Triangle</a> v <a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#Triangle" class="link">Source</a></p><div class="doc"><p>A triangle, represented by three triangle vertices
</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:Triangle" class="def">Triangle</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:TriangleVertex">TriangleVertex</a> v) (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:TriangleVertex">TriangleVertex</a> v) (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:TriangleVertex">TriangleVertex</a> v)</td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:Triangle" class="caption collapser" onclick="toggleSection('i:Triangle')">Instances</p><div id="section.i:Triangle" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Triangle">Triangle</a> v)</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Triangle">Triangle</a> v)</td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><span class="keyword">newtype</span> <a name="t:Triangulation" class="def">Triangulation</a> v <a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#Triangulation" class="link">Source</a></p><div class="doc"><p>A triangulation of a complex polygon
</p></div><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:Triangulation" class="def">Triangulation</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Triangle">Triangle</a> v]</td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:Triangulation" class="caption collapser" onclick="toggleSection('i:Triangulation')">Instances</p><div id="section.i:Triangulation" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Triangulation">Triangulation</a> v)</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Triangulation">Triangulation</a> v)</td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><a name="v:triangulate" class="def">triangulate</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-Storable.html#t:Storable">Storable</a> v => <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Tessellator">Tessellator</a> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Triangulation">Triangulation</a> v<a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#triangulate" class="link">Source</a></p></div><h1 id="g:7">Tessellation into primitives
</h1><div class="top"><p class="src"><span class="keyword">data</span> <a name="t:Primitive" class="def">Primitive</a> v <a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#Primitive" class="link">Source</a></p><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:Primitive" class="def">Primitive</a> <a href="Graphics-Rendering-OpenGL-GL-BeginEnd.html#t:PrimitiveMode">PrimitiveMode</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:AnnotatedVertex">AnnotatedVertex</a> v]</td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:Primitive" class="caption collapser" onclick="toggleSection('i:Primitive')">Instances</p><div id="section.i:Primitive" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Primitive">Primitive</a> v)</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Primitive">Primitive</a> v)</td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><span class="keyword">newtype</span> <a name="t:SimplePolygon" class="def">SimplePolygon</a> v <a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#SimplePolygon" class="link">Source</a></p><div class="subs constructors"><p class="caption">Constructors</p><table><tr><td class="src"><a name="v:SimplePolygon" class="def">SimplePolygon</a> [<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Primitive">Primitive</a> v]</td><td class="doc empty"> </td></tr></table></div><div class="subs instances"><p id="control.i:SimplePolygon" class="caption collapser" onclick="toggleSection('i:SimplePolygon')">Instances</p><div id="section.i:SimplePolygon" class="show"><table><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Eq.html#t:Eq">Eq</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:SimplePolygon">SimplePolygon</a> v)</td><td class="doc empty"> </td></tr><tr><td class="src"><a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> v => <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Data-Ord.html#t:Ord">Ord</a> (<a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:SimplePolygon">SimplePolygon</a> v)</td><td class="doc empty"> </td></tr></table></div></div></div><div class="top"><p class="src"><a name="v:tessellate" class="def">tessellate</a> :: <a href="/usr/share/doc/ghc/html/libraries/base-4.3.1.0/Foreign-Storable.html#t:Storable">Storable</a> v => <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:Tessellator">Tessellator</a> <a href="Graphics-Rendering-OpenGL-GLU-Tessellation.html#t:SimplePolygon">SimplePolygon</a> v<a href="src/Graphics-Rendering-OpenGL-GLU-Tessellation.html#tessellate" class="link">Source</a></p></div></div></div><div id="footer"><p>Produced by <a href="http://www.haskell.org/haddock/">Haddock</a> version 2.9.2</p></div></body></html>
