MPointOnMesh Class Reference

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Detailed Description

Mesh intersector result.

This class is used to return information about a point on a mesh: 3D position, normal, barycentric coordinates, etc. Note that this can be a point anywhere on the surface of the mesh, not just at vertices.

Examples:

closestPointCmd.cpp.

#include <MMeshIntersector.h>

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Public Member Functions
	MPointOnMesh ()
	Constructor.
MFloatPoint &	getPoint ()
	This method returns the point data. Search for all occurrences
MFloatVector &	getNormal ()
	This method returns the normal data.
void	getBarycentricCoords (float &u, float &v) const
	This method returns the barycentric coordinates of the closest point on the mesh. Search for all occurrences
int	faceIndex ()
	This method returns the face index data. Search for all occurrences
int	triangleIndex ()
	This method returns the triangle index data.
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class	MMeshIntersector Search for all occurrences

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Member Function Documentation

void getBarycentricCoords	(	float &	u,
		float &	v
	)		const

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This method returns the barycentric coordinates of the closest point on the mesh.

If the triangle has vertices (a, b, c) then the point returned by getPoint() is at coordinates u*a + v*b + (1 - u - v)*c. The barycentric coordinates are particularly useful when interpolating attributes from one mesh to another.

Parameters:

[out]	u	The relative contribution of the first vertex of the triangle.
[out]	v	The relative contribution of the second vertex of the triangle.