anchor.diff:    PaintingCanvas canvas;
     TinyFlutterNCanvas(this.canvas) {}
   
  +  List<Point> vertices = [];
  +  List<Point> textureCoordinates = [];
  +  List<Color> colors = [];
  +  List<int> indicies = [];
     void drawOval(TinyStage stage, TinyRect rect, TinyPaint paint) {
     }
   
  
positive.code:   }
  
    void drawRect(TinyStage stage, TinyRect rect, TinyPaint paint) {
    }
  
    void clipRect(TinyStage stage, TinyRect rect) {
      canvas.clipRect(new Rect.fromLTWH(rect.x, rect.y, rect.w, rect.h));
    }
  
    List<Point> vertices = [];
    List<Point> textureCoordinates = [];
    List<Color> colors = [];
    List<int> indicies = [];
    flush() {
      Paint p = new Paint()..style = sky.PaintingStyle.fill;
      if(curImage != null){
  
negative.code:   void updateMatrix() {
      canvas.setMatrix(this.getMatrix().storage);
    }
    Matrix4 cacheMatrix = new Matrix4.identity();
    Matrix4 calcMat() {
      cacheMatrix.setIdentity();
      //cacheMatrix = cacheMatrix.translate(-1.0, 1.0, 0.0);
      //cacheMatrix = cacheMatrix.scale(2.0 / glContext.widht, -2.0 / glContext.height, 1.0);
      cacheMatrix = cacheMatrix * getMatrix();
      return cacheMatrix;
    }
  }
  