public static bool EdgesCross(PedigreeCoupleEdge a, PedigreeCoupleEdge b, bool hiding)
{
if (a == null || b == null)
return false;
if (hiding)
{
if (!a.u.mother.bloodRelative || !a.u.father.bloodRelative || !a.v.mother.bloodRelative || !a.v.father.bloodRelative)
return false;
if (!b.u.mother.bloodRelative || !b.u.father.bloodRelative || !b.v.mother.bloodRelative || !b.v.father.bloodRelative)
return false;
}
bool aAndBShareAVertex = false;
aAndBShareAVertex = aAndBShareAVertex || a.u == b.u;
aAndBShareAVertex = aAndBShareAVertex || a.v == b.u;
aAndBShareAVertex = aAndBShareAVertex || a.u == b.v;
aAndBShareAVertex = aAndBShareAVertex || a.v == b.v;
if (aAndBShareAVertex)
return false;
double x1 = a.u.point.x;
double y1 = a.u.point.y;
double x2 = a.v.point.x;
double y2 = a.v.point.y;
double x3 = b.u.point.x;
double y3 = b.u.point.y;
double x4 = b.v.point.x;
double y4 = b.v.point.y;
return PedigreeUtils.LinesIntersect(x1, y1, x2, y2, x3, y3, x4, y4);
}
private static void CollapseEdge(PedigreeCoupleEdge edge,PedigreeModel model)
{
double avgX = (edge.u.point.x + edge.v.point.x) / 2;
if (!model.pointsBeingDragged.Contains(edge.u.point))
edge.u.point.x = avgX;
if (!model.pointsBeingDragged.Contains(edge.v.point))
edge.v.point.x = avgX;
double avgY = (edge.u.point.y + edge.v.point.y) / 2;
if (!model.pointsBeingDragged.Contains(edge.u.point))
edge.u.point.y = avgY;
if (!model.pointsBeingDragged.Contains(edge.v.point))
edge.v.point.y = avgY;
}
private static void ShrinkEdge(PedigreeCoupleEdge edge, double strength)
{
PointWithVelocity a = edge.u.point;
PointWithVelocity b = edge.v.point;
double distance = b.x - a.x;
double forceX = strength * distance;
a.dx += forceX;
b.dx -= forceX;
}