public void ComputeCoordinatesSubtree(Matrix4d parentTransform, Node parentNode)
{
if (parentNode.nodeNumDecendents == 0)
{
return;
}
float parentRadiusE = HyperbolicMath.euclideanDistance(parentNode.nodeHemsphereRadius);
float lastPhi = 0.0f;
Matrix4d rotPhi = HyperbolicTransformation.I4;
Point4d childCenterAbsolute = new Point4d();
Point4d childPoleAbsolute = new Point4d();
foreach (Node child in parentNode.nodeChildren)
{
float childRadiusE = HyperbolicMath.euclideanDistance(child.nodeHemsphereRadius);
float childPhi = child.nodeHemspherePhi;
if (!(Mathf.Abs(childPhi - lastPhi) < EPSILON))
{
lastPhi = childPhi;
rotPhi = HyperbolicTransformation.buildZRotation(childPhi);
}
Matrix4d rot = HyperbolicTransformation.buildXRotation(child.nodeHemsphereTheta);
rot = rot * rotPhi;
childCenterAbsolute.set(parentRadiusE, 0.0f, 0.0f, 1.0f);
rot.transform(childCenterAbsolute);
float childPoleE = HyperbolicMath.euclideanDistance(parentNode.nodeHemsphereRadius + child.nodeHemsphereRadius);
childPoleAbsolute.set(childPoleE, 0.0f, 0.0f, 1.0f);
rot.transform(childPoleAbsolute);
parentTransform.transform(childCenterAbsolute);
parentTransform.transform(childPoleAbsolute);
child.nodeEuclideanPosition = childCenterAbsolute;
//graph.setNodeLayoutCoordinates(child, childCenterAbsolute);
Matrix4d childTransform = HyperbolicTransformation.buildCanonicalOrientation(childCenterAbsolute, childPoleAbsolute);
ComputeCoordinatesSubtree(childTransform, child);
}
}
