Plane Frustum::GetPlane(int faceIndex) const
{
assume(0 <= faceIndex && faceIndex <= 5);
switch(faceIndex)
{
default: // For release builds where assume() is disabled, return always the first option if out-of-bounds.
case 0: return NearPlane();
case 1: return FarPlane();
case 2: return LeftPlane();
case 3: return RightPlane();
case 4: return TopPlane();
case 5: return BottomPlane();
}
}
int Frustum::UniqueFaceNormals(vec *out) const
{
if (type == PerspectiveFrustum)
{
out[0] = front;
out[1] = LeftPlane().normal;
out[2] = RightPlane().normal;
out[3] = TopPlane().normal;
out[4] = BottomPlane().normal;
return 5;
}
else
{
out[0] = front;
out[1] = up;
out[2] = Cross(front, up);
return 3;
}
}