Function AxisTest

trinity/Utilities/BoundingBox.cpp:664–674

-------------------------------------------------------------------------------------- Description: A helper function to test separating plane at a cross product between triangle edge and one of sides of a unit AABB. Return Value: false if separating plane was found true otherwise --------------------------------------------------------------------------------------

//   true otherwise
// --------------------------------------------------------------------------------------
inline bool AxisTest( float a, float b, float fa, float fb, const Vector3& v0, const Vector3& v1, int axis0, int axis1 )
{
	float p0 = a * v0[axis0] + b * v0[axis1];
	float p2 = a * v1[axis0] + b * v1[axis1];
	if( p2 < p0 )
	{
		std::swap( p0, p2 );
	}
	float rad = fa + fb;
	return !( p0 > rad || p2 < -rad );
}

}