Frustum Class Reference

Public Member Functions
void	extractFromProjectionMatrix (const Matrix &m)
void	getPlaneDefinition (const int &, float &, float &, float &, float &)
int	testSphere (const Sphere &sphere)
int	testBoundingBox ()

Member Function Documentation

testSphere()

int Frustum::testSphere

(

const Sphere &

sphere

)

Tests whether a sphere is inside, intersecting, or outside the frustum. Returns 1 (inside all planes), 0 (intersecting one or more planes), or -1 (outside at least one plane). Both engine callers treat r != -1 as visible. The check is conservative: the loop returns 0 on the first intersecting plane without testing remaining planes, so a sphere that intersects one plane but is outside another may return 0 instead of -1, causing it to be rendered rather than culled.

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

• Frustum.h
• Frustum.cpp