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#include <Imath/ImathFrustum.h>
#include <cassert>
void
frustum_example()
{
float near = 1.7f;
float far = 567.0f;
float left = -3.5f;
float right = 2.0f;
float top = 0.9f;
float bottom = -1.3f;
Imath::Frustumf frustum (near, far, left, right, top, bottom, false);
Imath::M44f m = frustum.projectionMatrix();
Imath::V3f p (1.0f, 1.0f, 1.0f);
Imath::V2f s = frustum.projectPointToScreen (p);
assert (s.equalWithAbsError (Imath::V2f (-0.345455f, -1.36364f), 0.0001f));
}
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