`lygia`

/`math`

/`rotate2d`

)returns a 2x2 rotation matrix

Use:

```
rotate2d(<float> radians)
```

```
#ifndef FNC_ROTATE2D
#define FNC_ROTATE2D
mat2 rotate2d(in float r){
float c = cos(r);
float s = sin(r);
return mat2(c, -s, s, c);
}
#endif
```

Use:

```
rotate2d(<float> radians)
```

```
#ifndef FNC_ROTATE2D
#define FNC_ROTATE2D
float2x2 rotate2d(in float radians){
float c = cos(radians);
float s = sin(radians);
return float2x2(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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