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Add rotate function

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This commit is contained in:
Grant Sanderson 2023-01-10 15:16:41 -08:00
parent 7212a98d65
commit 131ecce7c4
1 changed files with 19 additions and 0 deletions
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19
manimlib/shaders/inserts/rotate.glsl Normal file
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mat3 rotationMatrix(vec3 axis, float angle) {
axis = normalize(axis);
float s = sin(angle);
float c = cos(angle);
float oc = 1.0 - c;
float ax = axis.x;
float ay = axis.y;
float az = axis.z;
return mat3(
oc * ax * ax + c, oc * ax * ay - az * s, oc * az * ax + ay * s,
oc * ax * ay + az * s, oc * ay * ay + c, oc * ay * az - ax * s,
oc * az * ax - ay * s, oc * ay * az + ax * s, oc * az * az + c
);
}
vec3 rotate(vec3 vect, float angle, vec3 axis){
return rotationMatrix(axis, angle) * vect;
}