invertAndConcat method
void
invertAndConcat(
- Matrix concatMatrix
)
Implementation
void invertAndConcat(Matrix concatMatrix) {
final det = this.det;
final a1 = d / det;
final b1 = -b / det;
final c1 = -c / det;
final d1 = a / det;
final tx1 = -tx * a1 - ty * c1;
final ty1 = -tx * b1 - ty * d1;
final a2 = concatMatrix.a;
final b2 = concatMatrix.b;
final c2 = concatMatrix.c;
final d2 = concatMatrix.d;
final tx2 = concatMatrix.tx;
final ty2 = concatMatrix.ty;
_data[0] = a1 * a2 + b1 * c2;
_data[1] = a1 * b2 + b1 * d2;
_data[2] = c1 * a2 + d1 * c2;
_data[3] = c1 * b2 + d1 * d2;
_data[4] = tx1 * a2 + ty1 * c2 + tx2;
_data[5] = tx1 * b2 + ty1 * d2 + ty2;
}