Justin Marshall
20 lines
766 B
C++
20 lines
766 B
C++
#include "frustum.h"
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void idFrustum::ToPoints(idVec3 points[8]) const {
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const idVec3 nearCenter = origin + axis[0] * dNear;
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const idVec3 nearLeft = axis[1] * (dLeft * dNear * invFar);
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const idVec3 nearUp = axis[2] * (dUp * dNear * invFar);
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points[0] = nearCenter + nearLeft + nearUp;
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points[1] = nearCenter - nearLeft + nearUp;
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points[2] = nearCenter - nearLeft - nearUp;
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points[3] = nearCenter + nearLeft - nearUp;
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const idVec3 farCenter = origin + axis[0] * dFar;
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const idVec3 farLeft = axis[1] * dLeft;
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const idVec3 farUp = axis[2] * dUp;
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points[4] = farCenter + farLeft + farUp;
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points[5] = farCenter - farLeft + farUp;
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points[6] = farCenter - farLeft - farUp;
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points[7] = farCenter + farLeft - farUp;
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}
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