Function transformMat2

docs/app/js/sanddance-app.js:70000–70005

(out, a, m)

    return out;
}
function transformMat2(out, a, 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;
}
function transformMat2d(out, a, m) {
    var x = a[0], y = a[1];
    out[0] = m[0] * x + m[2] * y + m[4];