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Optimized GTX_matrix_interpolation axisAngle function

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This commit is contained in:
Christophe Riccio
2016-11-20 23:39:22 +01:00
parent 29535189f1
commit b09f395cd2
3 changed files with 13 additions and 11 deletions
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4
glm/gtx/color_space.inl
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@@ -14,8 +14,8 @@ namespace glm
rgbColor = tvec3<T, P>(hsv.z);
else
{
T sector = floor(hsv.x / T(60));
T frac = (hsv.x / T(60)) - sector;
T sector = floor(hsv.x * (T(1) / T(60)));
T frac = (hsv.x * (T(1) / T(60))) - sector;
// factorial part of h
T o = hsv.z * (T(1) - hsv.y);
T p = hsv.z * (T(1) - hsv.y * frac);

14
glm/gtx/matrix_interpolation.inl
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@@ -25,12 +25,12 @@ namespace glm
return;
}
angle = static_cast<T>(3.1415926535897932384626433832795);
T xx = (mat[0][0] + (T)1.0) / (T)2.0;
T yy = (mat[1][1] + (T)1.0) / (T)2.0;
T zz = (mat[2][2] + (T)1.0) / (T)2.0;
T xy = (mat[1][0] + mat[0][1]) / (T)4.0;
T xz = (mat[2][0] + mat[0][2]) / (T)4.0;
T yz = (mat[2][1] + mat[1][2]) / (T)4.0;
T xx = (mat[0][0] + (T)1.0) * (T)0.5;
T yy = (mat[1][1] + (T)1.0) * (T)0.5;
T zz = (mat[2][2] + (T)1.0) * (T)0.5;
T xy = (mat[1][0] + mat[0][1]) * (T)0.25;
T xz = (mat[2][0] + mat[0][2]) * (T)0.25;
T yz = (mat[2][1] + mat[1][2]) * (T)0.25;
if((xx > yy) && (xx > zz))
{
if (xx < epsilon) {
@@ -72,7 +72,7 @@ namespace glm
T s = sqrt((mat[2][1] - mat[1][2]) * (mat[2][1] - mat[1][2]) + (mat[2][0] - mat[0][2]) * (mat[2][0] - mat[0][2]) + (mat[1][0] - mat[0][1]) * (mat[1][0] - mat[0][1]));
if (glm::abs(s) < T(0.001))
s = (T)1.0;
angle = acos((mat[0][0] + mat[1][1] + mat[2][2] - (T)1.0) / (T)2.0);
angle = acos((mat[0][0] + mat[1][1] + mat[2][2] - (T)1.0) * (T)0.5);
axis.x = (mat[1][2] - mat[2][1]) / s;
axis.y = (mat[2][0] - mat[0][2]) / s;
axis.z = (mat[0][1] - mat[1][0]) / s;