GetBounds()
{
AssertValid();
if (m_oEdge.IsSelfLoop)
{
Debug.Assert(false);
throw new InvalidOperationException("Edge is self-loop.");
}
// Start with a rectangle that has the same dimensions as the edge, but
// that starts at the origin and has an angle of zero.
Point oVertex1Location = WpfGraphicsUtil.PointFToWpfPoint(
m_oEdge.Vertex1.Location);
Point oVertex2Location = WpfGraphicsUtil.PointFToWpfPoint(
m_oEdge.Vertex2.Location);
Double dLength = WpfGraphicsUtil.GetDistanceBetweenPoints(
oVertex1Location, oVertex2Location);
Double dAngleDegrees = MathUtil.RadiansToDegrees(
WpfGraphicsUtil.GetAngleBetweenPointsRadians(
oVertex1Location, oVertex2Location));
Double dHalfWidth = m_dWidth / 2.0;
Point[] ao4BoundingPoints = new Point[4] {
new Point(0, -dHalfWidth),
new Point(dLength, -dHalfWidth),
new Point(dLength, dHalfWidth),
new Point(0, dHalfWidth),
};
// Rotate the rectangle so it is at the same angle as the edge.
TransformPoints(new RotateTransform(dAngleDegrees), ao4BoundingPoints);
// Translate the rotated rectangle to the location of the edge's first
// endpoint.
TransformPoints(
new TranslateTransform(oVertex1Location.X, oVertex1Location.Y),
ao4BoundingPoints);
// Create a PathGeometry from the bounding points.
return(WpfPathGeometryUtil.GetPathGeometryFromPoints(
ao4BoundingPoints[0],
ao4BoundingPoints[1],
ao4BoundingPoints[2],
ao4BoundingPoints[3]
));
}
GetBounds()
{
return(WpfPathGeometryUtil.GetRoundedX(
this.VertexLocation, m_dHalfWidth));
}
DrawCombinedIntergroupEdge
(
DrawingContext oDrawingContext,
GraphDrawingContext oGraphDrawingContext,
IntergroupEdgeInfo oCombinedIntergroupEdge,
GroupLayoutDrawingInfo oGroupLayoutDrawingInfo
)
{
Debug.Assert(oDrawingContext != null);
Debug.Assert(oGraphDrawingContext != null);
Debug.Assert(oCombinedIntergroupEdge != null);
Debug.Assert(oGroupLayoutDrawingInfo != null);
AssertValid();
Rect oGroupRectangle1, oGroupRectangle2;
if (
!TryGetGroupRectangle(
oGroupLayoutDrawingInfo.GroupsToDraw[
oCombinedIntergroupEdge.Group1Index],
out oGroupRectangle1)
||
!TryGetGroupRectangle(
oGroupLayoutDrawingInfo.GroupsToDraw[
oCombinedIntergroupEdge.Group2Index],
out oGroupRectangle2)
)
{
return;
}
Point oGroupRectangle1Center =
WpfGraphicsUtil.GetRectCenter(oGroupRectangle1);
Point oGroupRectangle2Center =
WpfGraphicsUtil.GetRectCenter(oGroupRectangle2);
Point oBezierControlPoint = GetBezierControlPoint(oGraphDrawingContext,
oGroupRectangle1Center, oGroupRectangle2Center,
CombinedIntergroupEdgeBezierDisplacementFactor
);
PathGeometry oBezierCurve =
WpfPathGeometryUtil.GetQuadraticBezierCurve(oGroupRectangle1Center,
oGroupRectangle2Center, oBezierControlPoint);
Color oColor = GetContrastingColor(
oGraphDrawingContext, CombinedIntergroupEdgeAlpha, true);
Pen oPen = CreateFrozenPen(CreateFrozenSolidColorBrush(oColor),
GetCombinedIntergroupEdgePenWidth(oCombinedIntergroupEdge) *
this.GraphScale,
DashStyles.Solid, PenLineCap.Round);
oDrawingContext.DrawGeometry(null, oPen, oBezierCurve);
}
GetBounds()
{
return(WpfPathGeometryUtil.GetTaperedDiamond(
this.VertexLocation, m_dHalfWidth));
}
