added a new function rotateAxisAngle,

This commit is contained in:
yoichi kobayashi 2018-01-11 17:17:12 +09:00
parent 13c35a57b0
commit a4836d5854

19
rotateAxisAngle.glsl Normal file
View File

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vec3 rotateAxisAngle(vec3 p, vec3 axis, float angle){
float c = cos(angle);
float s = sin(angle);
float t = 1.0 - c;
vec3 a = normalize(axis);
mat3 m = mat3(
t * a.x * a.x + c,
t * a.x * a.y + a.z * s,
t * a.x * a.z - a.y * s,
t * a.y * a.x - a.z * s,
t * a.y * a.y + c,
t * a.y * a.z + a.x * s,
t * a.z * a.x + a.y * s,
t * a.z * a.y - a.x * s,
t * a.z * a.z + c
);
return m * p;
}
#pragma glslify: export(rotateAxisAngle)