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mat4 rotationMatrix(vec3 axis, float angle) | |
{ | |
axis = normalize(axis); | |
float s = sin(angle); | |
float c = cos(angle); | |
float oc = 1.0 - c; | |
return mat4(oc * axis.x * axis.x + c, oc * axis.x * axis.y - axis.z * s, oc * axis.z * axis.x + axis.y * s, 0.0, | |
oc * axis.x * axis.y + axis.z * s, oc * axis.y * axis.y + c, oc * axis.y * axis.z - axis.x * s, 0.0, | |
oc * axis.z * axis.x - axis.y * s, oc * axis.y * axis.z + axis.x * s, oc * axis.z * axis.z + c, 0.0, | |
0.0, 0.0, 0.0, 1.0); | |
} |
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