void AddSpringForces(FiEdge e)
{
Point duv;
if (settings.RespectEdgePorts)
{
var sourceLocation = e.source.Center;
var targetLocation = e.target.Center;
var sourceFloatingPort = e.mEdge.SourcePort as FloatingPort;
if (sourceFloatingPort != null)
{
sourceLocation = sourceFloatingPort.Location;
}
var targetFloatingPort = e.mEdge.TargetPort as FloatingPort;
if (targetFloatingPort != null)
{
targetLocation = targetFloatingPort.Location;
}
duv = sourceLocation - targetLocation;
}
else
{
duv = e.vector();
}
if (settings.LogScaleEdgeForces)
{
AddLogSpringForces(e, duv, e.mEdge.Length);
}
else
{
AddSquaredSpringForces(e, duv, e.mEdge.Length);
}
}
void AddLogSpringForces(FiEdge e, Point duv, double d)
{
double l = duv.Length,
f = 0.0007 * settings.AttractiveForceConstant * l * Math.Log((l + 0.1) / (d + 0.1));
e.source.force += f * duv;
e.target.force -= f * duv;
}
void AddSquaredSpringForces(FiEdge e, Point duv, double d)
{
double l = duv.Length,
d2 = d * d + 0.1,
f = settings.AttractiveForceConstant * (l - d) / d2;
e.source.force += f * duv;
e.target.force -= f * duv;
}
static void CalculateMultiPorts(FiEdge e)
{
var sourceLocation = e.source.Center;
var targetLocation = e.target.Center;
var sourceMultiPort = e.mEdge.SourcePort as MultiLocationFloatingPort;
if (sourceMultiPort != null)
{
sourceMultiPort.SetClosestLocation(targetLocation);
}
var targetMultiPort = e.mEdge.TargetPort as MultiLocationFloatingPort;
if (targetMultiPort != null)
{
targetMultiPort.SetClosestLocation(sourceLocation);
}
}
void AddSpringForces(FiEdge e) {
Point duv;
if (settings.RespectEdgePorts) {
var sourceLocation = e.source.Center;
var targetLocation = e.target.Center;
var sourceFloatingPort = e.mEdge.SourcePort as FloatingPort;
if (sourceFloatingPort != null) {
sourceLocation = sourceFloatingPort.Location;
}
var targetFloatingPort = e.mEdge.TargetPort as FloatingPort;
if (targetFloatingPort != null) {
targetLocation = targetFloatingPort.Location;
}
duv = sourceLocation - targetLocation;
}
else {
duv = e.vector();
}
if (settings.LogScaleEdgeForces) {
AddLogSpringForces(e, duv, e.mEdge.Length);
}
else {
AddSquaredSpringForces(e, duv, e.mEdge.Length);
}
}
static void CalculateMultiPorts(FiEdge e) {
var sourceLocation = e.source.Center;
var targetLocation = e.target.Center;
var sourceMultiPort = e.mEdge.SourcePort as MultiLocationFloatingPort;
if (sourceMultiPort != null) {
sourceMultiPort.SetClosestLocation(targetLocation);
}
var targetMultiPort = e.mEdge.TargetPort as MultiLocationFloatingPort;
if (targetMultiPort != null) {
targetMultiPort.SetClosestLocation(sourceLocation);
}
}
void AddSquaredSpringForces(FiEdge e, Point duv, double d) {
double l = duv.Length,
d2 = d*d + 0.1,
f = settings.AttractiveForceConstant*(l - d)/d2;
e.source.force += f*duv;
e.target.force -= f*duv;
}
void AddLogSpringForces(FiEdge e, Point duv, double d) {
double l = duv.Length,
f = 0.0007*settings.AttractiveForceConstant*l*Math.Log((l + 0.1)/(d + 0.1));
e.source.force += f*duv;
e.target.force -= f*duv;
}
