Method transformByMatrix2x3

docs/app/js/sanddance-app.js:69122–69125

(matrix2x3)

        return this.check();
    }
    transformByMatrix2x3(matrix2x3) {
        _vec2.transformMat2d(this, this, matrix2x3);
        return this.check();
    }
    transformByMatrix2(matrix2) {
        _vec2.transformMat2(this, this, matrix2);
        return this.check();