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41 lines
922 B
C
41 lines
922 B
C
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// triangle.h
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// CubicVR2
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//
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// Created by Charles J. Cliffe on 2013-02-22.
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// Copyright (c) 2013 Charles J. Cliffe. All rights reserved.
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//
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#ifndef __CubicVR2__triangle__
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#define __CubicVR2__triangle__
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#include <iostream>
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#include "vec3.h"
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namespace CubicVR {
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struct triangle {
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static vec3 normal(vec3 pt1, vec3 pt2, vec3 pt3) {
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__float v10 = pt1[0] - pt2[0];
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__float v11 = pt1[1] - pt2[1];
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__float v12 = pt1[2] - pt2[2];
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__float v20 = pt2[0] - pt3[0];
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__float v21 = pt2[1] - pt3[1];
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__float v22 = pt2[2] - pt3[2];
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vec3 mOut;
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mOut[0] = v11 * v22 - v12 * v21;
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mOut[1] = v12 * v20 - v10 * v22;
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mOut[2] = v10 * v21 - v11 * v20;
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return mOut;
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};
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};
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}
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#endif /* defined(__CubicVR2__triangle__) */
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