1 /*
   2  * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.javafx.scene.shape;
  27 
  28 import com.sun.javafx.geom.BaseBounds;
  29 import com.sun.javafx.geom.transform.BaseTransform;
  30 import com.sun.javafx.scene.NodeHelper;
  31 import com.sun.javafx.util.Utils;
  32 import javafx.scene.Node;
  33 import javafx.scene.shape.Shape3D;
  34 
  35 /**
  36  * Used to access internal methods of Shape3D.
  37  */
  38 public abstract class Shape3DHelper extends NodeHelper {
  39 
  40     private static Shape3DAccessor shape3DAccessor;
  41 
  42     static {
  43         Utils.forceInit(Shape3D.class);
  44     }
  45 
  46     @Override
  47     protected void updatePeerImpl(Node node) {
  48         super.updatePeerImpl(node);
  49         shape3DAccessor.doUpdatePeer(node);
  50     }
  51 
  52     @Override
  53     protected BaseBounds computeGeomBoundsImpl(Node node, BaseBounds bounds,
  54             BaseTransform tx) {
  55         return shape3DAccessor.doComputeGeomBounds(node, bounds, tx);
  56     }
  57 
  58     @Override
  59     protected boolean computeContainsImpl(Node node, double localX, double localY) {
  60         return shape3DAccessor.doComputeContains(node, localX, localY);
  61     }
  62 
  63     public static void setShape3DAccessor(final Shape3DAccessor newAccessor) {
  64         if (shape3DAccessor != null) {
  65             throw new IllegalStateException();
  66         }
  67 
  68         shape3DAccessor = newAccessor;
  69     }
  70 
  71     public interface Shape3DAccessor {
  72         void doUpdatePeer(Node node);
  73         BaseBounds doComputeGeomBounds(Node node, BaseBounds bounds, BaseTransform tx);
  74         boolean doComputeContains(Node node, double localX, double localY);
  75     }
  76 
  77 }