updateDraw method

void updateDraw()

Implementation

void updateDraw() {
  var translationMatrix = Float64List.fromList([
    cos(angle), sin(angle), 0, 0,
    -sin(angle), cos(angle), 0, 0,
    0, 0, 1, 0,
    0, 0, 0, 1
  ]);

  for(int i=0; i<draws.length; i++){
    draws[i] = backup_draws[i].transform(translationMatrix);
    draws[i] = draws[i].shift(Offset(xPos, yPos));
  }

}