// Global input processor listener implementation (IMTInputEventListener)
public boolean processInputEvent(MTInputEvent inEvt) {
if (inEvt instanceof MTFiducialInputEvt) {
MTFiducialInputEvt fEvt = (MTFiducialInputEvt) inEvt;
int fID = fEvt.getFiducialId();
Vector3D position = fEvt.getPosition();
AbstractShape comp;
switch (fEvt.getId()) {
case MTFiducialInputEvt.INPUT_STARTED:
// Create a new component for the fiducial
AbstractShape newComp = createComponent(fID, position);
fiducialIDToComp.put(fID, newComp); // Map id to component
// Move component to fiducial position
newComp.setPositionGlobal(position);
// Save the absolute rotation angle in the component for late
newComp.setUserData("angle", fEvt.getAngle());
// Rotate the component
newComp.rotateZ(
newComp.getCenterPointRelativeToParent(),
AbstractMTApplication.degrees(fEvt.getAngle()));
// Add the component to the canvas to draw it
getCanvas().addChild(newComp);
break;
case MTFiducialInputEvt.INPUT_UPDATED:
// Retrieve the corresponding component for the fiducial ID from the map
comp = fiducialIDToComp.get(fID);
if (comp != null) {
// Set the new position
comp.setPositionGlobal(position);
// Set the rotation (we have to do a little more here because
// mt4j does incremental rotations instead of specifying an absolute angle)
float oldAngle = (Float) comp.getUserData("angle"); // retrieve the "old" angle
float newAngle = fEvt.getAngle();
if (oldAngle != newAngle) {
float diff = newAngle - oldAngle;
comp.setUserData("angle", newAngle);
diff =
AbstractMTApplication.degrees(diff); // our rotation expects degrees (not radians)
comp.rotateZ(comp.getCenterPointRelativeToParent(), diff);
}
}
break;
case MTFiducialInputEvt.INPUT_ENDED:
comp = fiducialIDToComp.get(fID);
if (comp != null) {
comp.destroy();
fiducialIDToComp.remove(fID);
}
break;
default:
break;
}
}
return false;
}
/** Private method, fiducial has been updated */
private void updated() {
AbstractShape component = FiducialRegistry.getInstance().getFiducialComponent(EventID);
if (component != null) {
component.setPositionGlobal(event.getPosition());
float oldAngle = (Float) component.getUserData("angle"); // retrieve the "old" angle
float newAngle = event.getAngle();
if (oldAngle != newAngle) {
float diff = newAngle + oldAngle;
component.setUserData("angle", newAngle);
diff = MTApplication.degrees(diff); // our rotation expects degrees (not radians)
component.rotateZ(component.getCenterPointRelativeToParent(), diff);
}
}
}