osgUtil::DelaunayConstraint Class Reference
List of all members.
Detailed Description
DelaunayTriangulator: Utility class that triangulates an irregular network of sample points. Just create a DelaunayTriangulator, assign it the sample point array and call its triangulate() method to start the triangulation. Then you can obtain the generated primitive by calling the getTriangles() method.
Add DelaunayConstraints (or derived class) to control the triangulation edges.
Member Typedef Documentation
Constructor & Destructor Documentation
osgUtil::DelaunayConstraint::DelaunayConstraint |
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virtual osgUtil::DelaunayConstraint::~DelaunayConstraint |
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[inline, protected, virtual] |
Member Function Documentation
void osgUtil::DelaunayConstraint::addtriangle |
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int |
i1, |
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i2, |
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i3 | |
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Each primitiveset is a list of vertices which may be closed by joining up to its start to make a loop. Constraints should be simple lines, not crossing themselves. Constraints which cross other constraints can cause difficulties - see the example for methods of dealing with them. collect up indices of triangle from delaunay triangles. The delaunay triangles inside the DelaunayConstraint area can be used to fill the area or generate geometry that terrain follows the area in some way. These triangles can form a canopy or a field.
virtual bool osgUtil::DelaunayConstraint::contains |
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const osg::Vec3 & |
testpoint |
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const [virtual] |
true if testpoint is internal (or external) to constraint.
Call BEFORE makeDrawable to reorder points to make optimised set
void osgUtil::DelaunayConstraint::handleOverlaps |
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Tessellate the constraint loops so that the crossing points are interpolated and added to the contraints for the triangulation.
converts simple list of triangles into a drawarray.
Add vertices and constraint loops from dco Can be used to generate extra vertices where dco crosses 'this' using osgUtil::Tessellator to insert overlap vertices.
virtual bool osgUtil::DelaunayConstraint::outside |
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const osg::Vec3 & |
testpoint |
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const [virtual] |
remove from line the vertices that are inside dco
float osgUtil::DelaunayConstraint::windingNumber |
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const osg::Vec3 & |
testpoint |
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const |
return winding number as a float of loop around testpoint; may use multiple loops does not reject points on the edge or very very close to the edge
Member Data Documentation
The documentation for this class was generated from the following file: