public void Fill(Rect panelSize, Rect elementSize)
{
if (_element != null)
{
double pw = panelSize.Width;
double ph = panelSize.Height;
double ew = elementSize.Width;
double eh = elementSize.Height;
double zx = pw / ew;
double zy = ph / eh;
_matrix = MatrixHelper.ScaleAt(zx, zy, ew / 2.0, eh / 2.0);
Invalidate();
}
}
public void Extent(Rect panelSize, Rect elementSize)
{
if (_element != null)
{
double pw = panelSize.Width;
double ph = panelSize.Height;
double ew = elementSize.Width;
double eh = elementSize.Height;
double zx = pw / ew;
double zy = ph / eh;
double zoom = Min(zx, zy);
double cx = ew / 2.0;
double cy = eh / 2.0;
_matrix = MatrixHelper.ScaleAt(zoom, zoom, cx, cy);
Invalidate();
}
}
public Point FixInvalidPointPosition(Point point)
{
return(MatrixHelper.TransformPoint(_matrix.Invert(), point));
}
public void ZoomTo(double zoom, Point point)
{
_matrix = MatrixHelper.ScaleAtPrepend(_matrix, zoom, zoom, point.X, point.Y);
Invalidate();
}
