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