/**
* Disconnect edge <node,node.getParent()> by joining node's sister directly to node's grandmother
* and adding all colour changes previously on <node.getParent(),node.getParent().getParent()> to
* the new branch.
*
* @param node
*/
public void disconnectBranch(Node node) {
// Check argument validity:
Node parent = node.getParent();
if (node.isRoot() || parent.isRoot())
throw new IllegalArgumentException("Illegal argument to " + "disconnectBranch().");
Node sister = getOtherChild(parent, node);
// Add colour changes originally attached to parent to those attached
// to node's sister:
for (int idx = 0; idx < ((MultiTypeNode) parent).getChangeCount(); idx++) {
int colour = ((MultiTypeNode) parent).getChangeType(idx);
double time = ((MultiTypeNode) parent).getChangeTime(idx);
((MultiTypeNode) sister).addChange(colour, time);
}
// Implement topology change.
replace(parent.getParent(), parent, sister);
// Clear colour changes from parent:
((MultiTypeNode) parent).clearChanges();
// Ensure BEAST knows to update affected likelihoods:
parent.makeDirty(Tree.IS_FILTHY);
sister.makeDirty(Tree.IS_FILTHY);
node.makeDirty(Tree.IS_FILTHY);
}
/**
* Disconnect node from root, discarding all colouring on <node,root> and <node's sister,root>.
*
* @param node
*/
public void disconnectBranchFromRoot(Node node) {
// Check argument validity:
if (node.isRoot() || !node.getParent().isRoot())
throw new IllegalArgumentException("Illegal argument to" + " disconnectBranchFromRoot().");
// Implement topology change:
Node parent = node.getParent();
Node sister = getOtherChild(parent, node);
sister.setParent(null);
parent.getChildren().remove(sister);
// Clear colour changes on new root:
((MultiTypeNode) sister).clearChanges();
// Ensure BEAST knows to update affected likelihoods:
parent.makeDirty(Tree.IS_FILTHY);
sister.makeDirty(Tree.IS_FILTHY);
node.makeDirty(Tree.IS_FILTHY);
}
/**
* Creates a new branch between node and a new node at time destTime between destBranchBase and
* its parent. Colour changes are divided between the two new branches created by the split.
*
* @param node
* @param destBranchBase
* @param destTime
*/
public void connectBranch(Node node, Node destBranchBase, double destTime) {
// Check argument validity:
if (node.isRoot() || destBranchBase.isRoot())
throw new IllegalArgumentException("Illegal argument to " + "connectBranch().");
// Obtain existing parent of node and set new time:
Node parent = node.getParent();
parent.setHeight(destTime);
MultiTypeNode mtParent = (MultiTypeNode) parent;
MultiTypeNode mtDestBranchBase = (MultiTypeNode) destBranchBase;
// Determine where the split comes in the list of colour changes
// attached to destBranchBase:
int split;
for (split = 0; split < mtDestBranchBase.getChangeCount(); split++)
if (mtDestBranchBase.getChangeTime(split) > destTime) break;
// Divide colour changes between new branches:
mtParent.clearChanges();
for (int idx = split; idx < mtDestBranchBase.getChangeCount(); idx++)
mtParent.addChange(mtDestBranchBase.getChangeType(idx), mtDestBranchBase.getChangeTime(idx));
mtDestBranchBase.truncateChanges(split);
// Set colour at split:
mtParent.setNodeType(mtDestBranchBase.getFinalType());
// Implement topology changes:
replace(destBranchBase.getParent(), destBranchBase, parent);
destBranchBase.setParent(parent);
if (parent.getLeft() == node) parent.setRight(destBranchBase);
else if (parent.getRight() == node) parent.setLeft(destBranchBase);
// Ensure BEAST knows to update affected likelihoods:
node.makeDirty(Tree.IS_FILTHY);
parent.makeDirty(Tree.IS_FILTHY);
destBranchBase.makeDirty(Tree.IS_FILTHY);
}
