VertexPointers Class Reference

#include <OPC_MeshInterface.h>

Public Member Functions
bool	BackfaceCulling (const Point &source)

Public Attributes
const Point *	Vertex [3]

Detailed Description

This structure holds 3 vertex-pointers. It's mainly used by collision callbacks so that the app doesn't have to return 3 vertices to OPCODE (36 bytes) but only 3 pointers (12 bytes). It seems better but I never profiled the alternative.

Author

Pierre Terdiman

Version

1.3

Date

March, 20, 2001

Definition at line 23 of file OPC_MeshInterface.h.

Member Function Documentation

bool VertexPointers::BackfaceCulling ( const Point &  source)

inline

Definition at line 27 of file OPC_MeshInterface.h.

References f, and Vertex.

        {
            const Point& p0 = *Vertex[0];
            const Point& p1 = *Vertex[1];
            const Point& p2 = *Vertex[2];

            // Compute normal direction
            Point Normal = (p2 - p1)^(p0 - p1);

            // Backface culling
            return (Normal | (source - p0)) >= 0.0f;
        }

Member Data Documentation

const Point* VertexPointers::Vertex[3]

Definition at line 25 of file OPC_MeshInterface.h.

Referenced by BackfaceCulling().

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The documentation for this class was generated from the following file:

• src/cmd/collide2/OPC_MeshInterface.h