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#include "transforms.h"
namespace Geom {
Matrix operator*(Translate const &t, Scale const &s) {
Matrix ret(s);
ret[4] = t[X] * s[X];
ret[5] = t[Y] * s[Y];
return ret;
}
Matrix operator*(Translate const &t, Rotate const &r) {
Matrix ret(r);
ret.setTranslation(t.vec * ret);
return ret;
}
Matrix operator*(Scale const &s, Translate const &t) {
return Matrix(s[0], 0,
0 , s[1],
t[0], t[1]);
}
Matrix operator*(Scale const &s, Matrix const &m) {
Matrix ret(m);
ret[0] *= s[X];
ret[1] *= s[X];
ret[2] *= s[Y];
ret[3] *= s[Y];
return ret;
}
Matrix operator*(Matrix const &m, Translate const &t) {
Matrix ret(m);
ret[4] += t[X];
ret[5] += t[Y];
return ret;
}
Matrix operator*(Matrix const &m, Scale const &s) {
Matrix ret(m);
ret[0] *= s[X]; ret[1] *= s[Y];
ret[2] *= s[X]; ret[3] *= s[Y];
ret[4] *= s[X]; ret[5] *= s[Y];
return ret;
}
}
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