private void UpdateRenderTransform()
{
double canvasWidth = canvas.ActualWidth;
double canvasHeight = canvas.ActualHeight;
MatrixTransform baseTransform = DxfUtil.GetScaleWMMatrixTransform(
(Point2D)bounds.Corner1,
(Point2D)bounds.Corner2,
(Point2D)bounds.Center,
new Point2D(1d, canvasHeight),
new Point2D(canvasWidth, 1d),
new Point2D(0.5d * (canvasWidth + 1d), 0.5d * (canvasHeight + 1d))
);
TransformGroup transformGroup = new TransformGroup();
transformGroup.Children.Add(baseTransform);
transformGroup.Children.Add(new TranslateTransform()
{
X = -canvasWidth / 2d,
Y = -canvasHeight / 2d
});
transformGroup.Children.Add(new ScaleTransform()
{
ScaleX = scaling,
ScaleY = scaling
});
transformGroup.Children.Add(new TranslateTransform()
{
X = canvasWidth / 2d,
Y = canvasHeight / 2d
});
transformGroup.Children.Add(new TranslateTransform()
{
X = translation.X * canvasWidth / 2d,
Y = -translation.Y * canvasHeight / 2d
});
canvas.RenderTransform = transformGroup;
}
