protected void applyDelta(Vector3f deltaTranslation, Quaternion deltaRotation) {
LOGGER.warning("Applying delta: " + deltaTranslation + " " + deltaRotation);
boolean startedDrag = false;
if (!dragging) {
// no drag in progress. Start one now and end it after the drag
// operation
startDrag();
startedDrag = true;
}
for (Cell cell : selected.getSelectedCells()) {
CellTransform transform = cell.getLocalTransform();
Vector3f translate = transform.getTranslation(null);
Quaternion rotation = transform.getRotation(null);
// if the cell has a parent, make sure to take the parent's
// rotation and scale into account when applying the delta
Vector3f localDeltaTranslation = deltaTranslation.clone();
Cell parent = cell.getParent();
if (parent != null) {
CellTransform parentWorld = parent.getWorldTransform();
Quaternion parentRotation = parentWorld.getRotation(null);
float parentScale = parentWorld.getScaling();
LOGGER.warning("Parent transform: " + parentWorld);
// invert the rotation to get the child rotation
parentRotation.inverseLocal();
localDeltaTranslation = parentRotation.mult(deltaTranslation);
localDeltaTranslation.multLocal(parentScale);
LOGGER.warning("Local delta translation: " + localDeltaTranslation);
}
translate.addLocal(localDeltaTranslation);
rotation.multLocal(deltaRotation);
transform.setTranslation(translate);
transform.setRotation(rotation);
MovableComponent mc = getMovable(cell);
if (mc != null) {
mc.localMoveRequest(transform);
}
}
lastTranslation.addLocal(deltaTranslation);
lastRotation.multLocal(deltaRotation);
// if we started a drag, remember to end it
if (startedDrag) {
endDrag();
}
}
