transformMat2 function
Transforms the vec2 with a mat2
@param {vec2} out the receiving vector @param {ReadonlyVec2} a the vector to transform @param {ReadonlyMat2} m matrix to transform with @returns {vec2} out
Implementation
List<double> transformMat2(List<double> out, List<double> a, List<double> m) {
var x = a[0], y = a[1];
out[0] = m[0] * x + m[2] * y;
out[1] = m[1] * x + m[3] * y;
return out;
}