lygia/math/rotate2d)returns a 2x2 rotation matrix
Use:
<mat2> rotate2d(<float> radians)
#ifndef FNC_ROTATE2D
#define FNC_ROTATE2D
mat2 rotate2d(const in float r){
float c = cos(r);
float s = sin(r);
return mat2(c, s, -s, c);
}
#endif
Use:
<float2x2> rotate2d(<float> radians)
#ifndef FNC_ROTATE2D
#define FNC_ROTATE2D
float2x2 rotate2d(const in float r){
float c = cos(r);
float s = sin(r);
return float2x2(c, -s, s, c);
}
#endif
Use:
<matrix<float, 2, 2>> rotate2d(<float> radians)
#ifndef FNC_ROTATE2D
#define FNC_ROTATE2D
matrix<float, 2, 2> rotate2d(const float r){
float c = cos(r);
float s = sin(r);
return matrix<float, 2, 2>(c, -s, s, c);
}
#endif
fn rotate2d(radians: f32) -> mat2x2<f32> {
let c = cos(radians);
let s = sin(radians);
return mat2x2<f32>(c, -s, s, c);
}
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