1 /*
   2  * Copyright (c) 2016, 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.PickRay;
  30 import com.sun.javafx.geom.transform.BaseTransform;
  31 import com.sun.javafx.scene.input.PickResultChooser;
  32 import com.sun.javafx.sg.prism.NGNode;
  33 import com.sun.javafx.util.Utils;
  34 import javafx.scene.Node;
  35 import javafx.scene.shape.Cylinder;
  36 
  37 /**
  38  * Used to access internal methods of Cylinder.
  39  */
  40 public class CylinderHelper extends Shape3DHelper {
  41 
  42     private static final CylinderHelper theInstance;
  43     private static CylinderAccessor cylinderAccessor;
  44 
  45     static {
  46         theInstance = new CylinderHelper();
  47         Utils.forceInit(Cylinder.class);
  48     }
  49 
  50     private static CylinderHelper getInstance() {
  51         return theInstance;
  52     }
  53 
  54     public static void initHelper(Cylinder cylinder) {
  55         setHelper(cylinder, getInstance());
  56     }
  57 
  58     @Override
  59     protected NGNode createPeerImpl(Node node) {
  60         return cylinderAccessor.doCreatePeer(node);
  61     }
  62 
  63     @Override
  64     protected void updatePeerImpl(Node node) {
  65         super.updatePeerImpl(node);
  66         cylinderAccessor.doUpdatePeer(node);
  67     }
  68 
  69     @Override
  70     protected BaseBounds computeGeomBoundsImpl(Node node, BaseBounds bounds,
  71             BaseTransform tx) {
  72         return cylinderAccessor.doComputeGeomBounds(node, bounds, tx);
  73     }
  74 
  75     @Override
  76     protected boolean computeContainsImpl(Node node, double localX, double localY) {
  77         return cylinderAccessor.doComputeContains(node, localX, localY);
  78     }
  79 
  80     protected boolean computeIntersectsImpl(Node node, PickRay pickRay,
  81             PickResultChooser pickResult) {
  82         return cylinderAccessor.doComputeIntersects(node, pickRay, pickResult);
  83     }
  84 
  85     public static void setCylinderAccessor(final CylinderAccessor newAccessor) {
  86         if (cylinderAccessor != null) {
  87             throw new IllegalStateException();
  88         }
  89 
  90         cylinderAccessor = newAccessor;
  91     }
  92 
  93     public interface CylinderAccessor {
  94         NGNode doCreatePeer(Node node);
  95         void doUpdatePeer(Node node);
  96         BaseBounds doComputeGeomBounds(Node node, BaseBounds bounds, BaseTransform tx);
  97         boolean doComputeContains(Node node, double localX, double localY);
  98         boolean doComputeIntersects(Node node, PickRay pickRay,
  99             PickResultChooser pickResult);
 100     }
 101 
 102 }