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#include <BH/Math/Misc.h>
#include <BH/Math/Vec3f.h>
float BH_Lerpf(float a, float b, float t)
{
return a + (b - a) * t;
}
void BH_Triangle3fBarycentric(const float a[3],
const float b[3],
const float c[3],
const float point[3],
float out[3])
{
float tmp1[3], tmp2[3], tmp3[3];
float t11, t12, t22, t31, t32, denom;
BH_Vec3fSub(b, a, tmp1);
BH_Vec3fSub(c, a, tmp2);
BH_Vec3fSub(point, a, tmp3);
t11 = BH_Vec3fDot(tmp1, tmp1);
t12 = BH_Vec3fDot(tmp1, tmp2);
t22 = BH_Vec3fDot(tmp2, tmp2);
t31 = BH_Vec3fDot(tmp3, tmp1);
t32 = BH_Vec3fDot(tmp3, tmp2);
denom = 1.0f / (t11 * t22 - t12 * t12);
out[1] = (t22 * t31 - t12 * t32) * denom;
out[2] = (t11 * t32 - t12 * t31) * denom;
out[0] = 1.0f - out[1] - out[2];
}
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