491      */
 492     @Override
 493     public void interpolate(double frac) {
 494         if (!Double.isNaN(startX)) {
 495             cachedNode.setTranslateX(startX + frac * deltaX);
 496         }
 497         if (!Double.isNaN(startY)) {
 498             cachedNode.setTranslateY(startY + frac * deltaY);
 499         }
 500         if (!Double.isNaN(startZ)) {
 501             cachedNode.setTranslateZ(startZ + frac * deltaZ);
 502         }
 503     }
 504 
 505     private Node getTargetNode() {
 506         final Node node = getNode();
 507         return (node != null)? node : getParentTargetNode();
 508     }
 509 
 510     @Override
 511     boolean impl_startable(boolean forceSync) {
 512         return super.impl_startable(forceSync)
 513                 && ((getTargetNode() != null) || (!forceSync && (cachedNode != null)));
 514     }
 515 
 516     @Override
 517     void impl_sync(boolean forceSync) {
 518         super.impl_sync(forceSync);
 519         if (forceSync || (cachedNode == null)) {
 520             cachedNode = getTargetNode();
 521 
 522             final double _fromX = getFromX();
 523             final double _fromY = getFromY();
 524             final double _fromZ = getFromZ();
 525 
 526             final double _toX = getToX();
 527             final double _toY = getToY();
 528             final double _toZ = getToZ();
 529 
 530             final double _byX = getByX();
 531             final double _byY = getByY();
 532             final double _byZ = getByZ();
 533 
 534             if (Double.isNaN(_fromX) && Double.isNaN(_toX) && (Math.abs(_byX) < EPSILON)) {
 535                 startX = Double.NaN;
 536             } else {
 537                 startX = (!Double.isNaN(_fromX)) ? _fromX : cachedNode.getTranslateX();
 538                 deltaX = (!Double.isNaN(_toX)) ? _toX - startX : _byX;

 491      */
 492     @Override
 493     public void interpolate(double frac) {
 494         if (!Double.isNaN(startX)) {
 495             cachedNode.setTranslateX(startX + frac * deltaX);
 496         }
 497         if (!Double.isNaN(startY)) {
 498             cachedNode.setTranslateY(startY + frac * deltaY);
 499         }
 500         if (!Double.isNaN(startZ)) {
 501             cachedNode.setTranslateZ(startZ + frac * deltaZ);
 502         }
 503     }
 504 
 505     private Node getTargetNode() {
 506         final Node node = getNode();
 507         return (node != null)? node : getParentTargetNode();
 508     }
 509 
 510     @Override
 511     boolean startable(boolean forceSync) {
 512         return super.startable(forceSync)
 513                 && ((getTargetNode() != null) || (!forceSync && (cachedNode != null)));
 514     }
 515 
 516     @Override
 517     void sync(boolean forceSync) {
 518         super.sync(forceSync);
 519         if (forceSync || (cachedNode == null)) {
 520             cachedNode = getTargetNode();
 521 
 522             final double _fromX = getFromX();
 523             final double _fromY = getFromY();
 524             final double _fromZ = getFromZ();
 525 
 526             final double _toX = getToX();
 527             final double _toY = getToY();
 528             final double _toZ = getToZ();
 529 
 530             final double _byX = getByX();
 531             final double _byY = getByY();
 532             final double _byZ = getByZ();
 533 
 534             if (Double.isNaN(_fromX) && Double.isNaN(_toX) && (Math.abs(_byX) < EPSILON)) {
 535                 startX = Double.NaN;
 536             } else {
 537                 startX = (!Double.isNaN(_fromX)) ? _fromX : cachedNode.getTranslateX();
 538                 deltaX = (!Double.isNaN(_toX)) ? _toX - startX : _byX;