private void putEndPointsAtNodeBorders(bool routing, Link orgnLink, Link destLink)
{
PointF ptOrg = orgnLink.getInitialPt();
PointF ptDest = destLink.getInitialPt();
if (!orgnLink.objsIntersect(destLink))
{
// if destination and source do not intersect, use the points
// where the line connecting their centers crosses their outlines
if (style == ArrowStyle.Cascading)
updateEndPtsPrp();
ptOrg = orgnLink.getIntersection(ptOrg,
routing ? ptDest : points[1]);
ptDest = destLink.getIntersection(ptDest,
routing ? ptOrg : points[points.Count - 2]);
}
else
{
// if the arrow will be rerouted, choose the closest points on the
// horizontal line intersections with the node outlines. These points
// should not be contained within a node
if (routing)
chooseRouteOutlinePoints(orgnLink, destLink, ref ptOrg, ref ptDest);
}
// snap to nearest anchors
ptOrg = orgnLink.getNode().getAnchor(
ptOrg, this, false, ref orgnAnchor);
ptDest = destLink.getNode().getAnchor(
ptDest, this, true, ref destAnchor);
if (style != ArrowStyle.Cascading)
retain(ptOrg.X - points[0].X, ptOrg.Y - points[0].Y, true);
points[0] = ptOrg;
if (style != ArrowStyle.Cascading)
retain(ptDest.X - points[points.Count - 1].X, ptDest.Y - points[points.Count - 1].Y, false);
points[points.Count - 1] = ptDest;
if (style == ArrowStyle.Cascading)
updateEndPtsPrp();
}
private void setEndPoints(Link orgnLink, Link destLink, PointF end)
{
reflexive = destLink.sameNode(orgnLink);
// align the end points of the arrow to the outlines of the connected nodes
if (orgnLink.calcIntrs())
ptOrg = points[0] = orgnLink.getInitialPt();
if (destLink.calcIntrs())
ptEnd = destLink.getInitialPt();
else
ptEnd = end;
if (!orgnLink.objsIntersect(destLink) && !reflexive)
{
if (orgnLink.calcIntrs())
ptOrg = points[0] = orgnLink.getIntersection(ptOrg, ptEnd);
if (destLink.calcIntrs())
ptEnd = destLink.getIntersection(ptEnd, ptOrg);
}
else
{
// if the arrow will be routed, choose the closest points on the
// horizontal line intersections with the node outlines. These points
// should not be contained within a node
if (autoRoute && !dynamic && orgnAnchor == -1 && destAnchor == -1)
{
chooseRouteOutlinePoints(orgnLink, destLink, ref ptOrg, ref ptEnd);
points[0] = ptOrg;
}
}
}
internal void setOrgAndDest(Link orgLink, Link trgLink)
{
orgnLink = orgLink;
destLink = trgLink;
// place the end points of the arrow at their respective object edge
points[0] = orgnLink.getInitialPt();
points[points.Count-1] = destLink.getInitialPt();
if (!orgnLink.objsIntersect(destLink))
{
points[0] = orgnLink.getIntersection(points[0], points[points.Count-1]);
points[points.Count-1] = destLink.getIntersection(points[points.Count-1], points[0]);
}
points[0] = orgnLink.getAnchor(points[0], this, false, ref orgnAnchor);
points[points.Count-1] = destLink.getAnchor(points[points.Count-1], this, true, ref destAnchor);
// set reflexive arrow position & form
reflexive = orgnLink.sameNode(destLink);
if (reflexive)
{
setReflexive();
}
else
{
// compute the arrow points
updatePoints(points[points.Count-1]);
if (dynamic)
updatePosFromOrgAndDest(true);
}
rectFromPoints();
// relative position to nodes
orgnLink.saveEndRelative();
destLink.saveEndRelative();
doRoute();
}