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10 lines
355 B
Plaintext
10 lines
355 B
Plaintext
vec2 rotate_uv(vec2 uv, vec2 center, float rotation, bool use_degrees){
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float _angle = rotation;
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if(use_degrees){
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_angle = rotation * (3.1415926/180.0);
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}
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vec2 _delta = uv - center;
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float _x = cos(_angle) * _delta.x - sin(_angle) * _delta.y;
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float _y = sin(_angle) * _delta.x + cos(_angle) * _delta.y;
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return vec2(_x + center.x, _y + center.y);
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} |