/**
* Constructor.
*
* @param iBranchIndex int Index which identifies the branch.
* @param kFlyPathGraph FlyPathGraphCurve Data structure which contains all of the information
* about each branch and its connections.
*/
public BranchState(int iBranchIndex, FlyPathGraphCurve kFlyPathGraph) {
m_iBranchIndex = iBranchIndex;
m_kBranchCurve = kFlyPathGraph.getCurvePosition(iBranchIndex);
m_fDistUnvisitedMin = 0.0f;
m_fDistUnvisitedMax = 1.0f;
m_afBranchPoint = kFlyPathGraph.getBranchPoints(iBranchIndex);
m_iParentBranchIndex = kFlyPathGraph.getBranchParentIndex(iBranchIndex);
m_fParentBranchPoint = kFlyPathGraph.getBranchParentNormalizedDist(iBranchIndex);
start();
}
/**
* Setup to fly along the specified path and look around.
*
* @param kFlyPathGraph FlyPathGraphCurve contains the information regarding the graph
* representation of 3D path segments represented by Curve3 instances
* @param kAnnotateList FlyPathAnnotateList contains the list of annotation points.
* @param kTransformPosition TransformGroup contains the Transform3D for the current viewing
* position.
* @param kTransformDirection TransformGroup contains the Transform3D for the current viewing
* direction.
* @param kTransformOrientation TransformGroup contains the Transform3D for the current viewing
* orientation.
* @param _parentScene the parent frame which hold Canvas3D.
*/
public FlyPathBehavior_WM(
FlyPathGraphCurve kFlyPathGraph,
FlyPathAnnotateList_WM kAnnotateList,
FlyThroughRender _parentScene) {
// Keep references to these.
m_kFlyPathGraph = kFlyPathGraph;
m_kAnnotateList = kAnnotateList;
parentScene = _parentScene;
parentScene.GetCanvas().addKeyListener(this);
// Create array to store the state of each branch.
int iNumBranches = kFlyPathGraph.getNumBranches();
m_akBranchState = new BranchState[iNumBranches];
for (int iBranch = 0; iBranch < iNumBranches; iBranch++) {
m_akBranchState[iBranch] = new BranchState(iBranch, kFlyPathGraph);
}
// Set initial branch, position, and step.
// Compute the distance increment along the path that each
// step will take.
m_fPathStep = 1.0f;
m_fGazeDist = 10.0f;
setBranch(0);
}
/**
* Create the array of branch choices and set the mode which forces the user to select from among
* the branch choices.
*
* @param iBranchParent int Index which identifies the parent branch.
* @param iBranchPoint int Index which identifies the point along the branch path where the
* branching occurs for the choices.
*/
private void setupBranchChoices(int iBranchParent, int iBranchPoint) {
// Get list of possible sub-branches for the parent.
int[] aiBranchChildIndex = m_kFlyPathGraph.getBranchPointBranches(iBranchParent, iBranchPoint);
// Get the information for the parent branch.
BranchState kBranchStateParent = m_akBranchState[iBranchParent];
// Build the list of possible branches.
// First branch choice is the parent branch, current direction
// Last branch choice is the parent branch, reverse direction
// Reset all of the sub-branches to their start state.
m_akBranchChoice = new BranchState[2 + aiBranchChildIndex.length];
m_akBranchChoice[0] = kBranchStateParent.createCopy();
m_akBranchChoice[m_akBranchChoice.length - 1] = kBranchStateParent.createReverseCopy();
for (int i = 0; i < aiBranchChildIndex.length; i++) {
int iBranchChild = aiBranchChildIndex[i];
m_akBranchState[iBranchChild].start();
m_akBranchChoice[i + 1] = m_akBranchState[iBranchChild].createCopy();
}
m_bChooseBranch = true;
m_iBranchChoiceIndex = -1;
}