private void Redraw()
{
Sequence <IGraphicsElement> elements = drawing.Draw();
if (elements == null)
{
return;
}
canvas.Children.Clear();
ViewTransform vt = new ViewTransform(canvasPos.Left, canvasPos.Top, canvasSize.Y * zoom);
IGraphicsElement element;
elements.Reset();
while (elements.Next(out element))
{
if (!element.AABB.IntersectsWith(canvasPos))
{
continue;
}
UIElement[] shapes = element.Draw(vt);
for (int j = 0; j < shapes.Length; ++j)
{
canvas.Children.Add(shapes[j]);
}
}
this.elements = elements;
}
public UIElement[] Draw(ViewTransform vt)
{
Point p1 = vt.Transform.Transform(new Point(X1, Y1));
Point p2 = vt.Transform.Transform(new Point(X2, Y2));
return(new UIElement[] { new Line()
{
Stroke = Fill, StrokeThickness = Thickness, X1 = p1.X, Y1 = p1.Y, X2 = p2.X, Y2 = p2.Y
} });
}
public UIElement[] Draw(ViewTransform vt)
{
TextBlock tb = CreateTextBlock();
TransformGroup tg = new TransformGroup()
{
Children = new TransformCollection()
{
new TranslateTransform(X, Y), vt.Transform
}
};
tb.RenderTransform = tg;
return(new UIElement[] { tb });
}
public UIElement[] Draw(ViewTransform vt)
{
Shape[] shapes = Model.Draw();
TransformGroup tg = new TransformGroup()
{
Children = new TransformCollection()
{
new ScaleTransform(Scale, Scale), new RotateTransform(Angle), new TranslateTransform(X, Y), vt.Transform
}
};
for (int i = 0; i < shapes.Length; ++i)
{
Shape shape = shapes[i];
((TransformGroup)shape.RenderTransform).Children.Add(tg);
shape.Fill = Fill;
}
return(shapes);
}