/// <summary>
/// Creates the <see cref="IVisual"/> which renders the node.
/// </summary>
/// <param name="context">The current render context. The render context provides
/// additional information like the <see cref="CanvasControl"/> where the node is rendered.</param>
/// <param name="node">The node to render</param>
/// <returns>A visual which renders the given node.</returns>
protected override VisualGroup CreateVisual(IRenderContext context, INode node) {
var layout = node.Layout.ToRectD();
// Draw a drop shadow
var group = new VisualGroup();
// Only draw the shadow if the zoomlevel is > 0.3
if (context.Zoom > 0.3) {
group.Children.Add(new ImageVisual {
Image = CreateShadow(layout.Size),
Rectangle = new RectD(-(layout.Width*0.5d) + dropShadowOffset, -(layout.Height*0.5d) + dropShadowOffset, layout.Width*2,
layout.Height*2)
});
} else {
group.Add(null);
}
// create the actual node visualization
var ballVisual = new BallVisual();
ballVisual.Update(layout.Size, GetNodeColor(node));
group.Add(ballVisual);
// now translate all to the final location
group.Transform = new Matrix(1, 0, 0, 1, (float) layout.X, (float) layout.Y);
return group;
}
/// <summary>
/// Creates the <see cref="IVisual"/> which renders the node.
/// </summary>
/// <param name="context">The current render context. The render context provides
/// additional information like the <see cref="CanvasControl"/> where the node is rendered.</param>
/// <param name="node">The node to render</param>
/// <returns>A visual which renders the given node.</returns>
protected override VisualGroup CreateVisual(IRenderContext context, INode node)
{
var layout = node.Layout.ToRectD();
// Draw a drop shadow
var group = new VisualGroup();
// Only draw the shadow if the zoomlevel is > 0.3
if (context.Zoom > 0.3)
{
group.Children.Add(new ImageVisual {
Image = CreateShadow(layout.Size),
Rectangle = new RectD(-(layout.Width * 0.5d) + dropShadowOffset, -(layout.Height * 0.5d) + dropShadowOffset, layout.Width * 2,
layout.Height * 2)
});
}
else
{
group.Add(null);
}
// Check if a Color is stored in the node's tag
Color color = Color;
if (node.Tag is Color)
{
color = (Color)node.Tag;
}
// create the actual node visualization
var ballVisual = new BallVisual();
ballVisual.Update(layout.Size, color);
group.Add(ballVisual);
// Draw 'edges' connecting nodes with their labels
var labelsGroup = new VisualGroup();
RenderLabelEdges(context, node, labelsGroup);
group.Add(labelsGroup);
// now translate all to the final location
group.Transform = new Matrix(1, 0, 0, 1, (float)layout.X, (float)layout.Y);
return(group);
}
