1 /* 2 * Copyright (c) 2013, 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; 27 28 import com.sun.javafx.geom.BaseBounds; 29 import com.sun.javafx.geom.transform.BaseTransform; 30 import com.sun.javafx.jmx.MXNodeAlgorithm; 31 import com.sun.javafx.jmx.MXNodeAlgorithmContext; 32 import com.sun.javafx.sg.prism.NGNode; 33 import com.sun.javafx.util.Utils; 34 import javafx.geometry.Point2D; 35 import javafx.geometry.Point3D; 36 import javafx.scene.Camera; 37 import javafx.scene.Node; 38 39 /** 40 * Used to access internal methods of Camera. 41 */ 42 public class CameraHelper extends NodeHelper { 43 44 private static final CameraHelper theInstance; 45 private static CameraAccessor cameraAccessor; 46 47 static { 48 theInstance = new CameraHelper(); 49 Utils.forceInit(Camera.class); 50 } 51 52 private static CameraHelper getInstance() { 53 return theInstance; 54 } 55 56 public static void initHelper(Camera camera) { 57 setHelper(camera, getInstance()); 58 } 59 60 @Override 61 protected NGNode createPeerImpl(Node node) { 62 throw new UnsupportedOperationException("Application should not extend Camera class directly."); 63 } 64 65 @Override 66 protected void updatePeerImpl(Node node) { 67 super.updatePeerImpl(node); 68 cameraAccessor.doUpdatePeer(node); 69 } 70 71 @Override 72 protected void markDirtyImpl(Node node, DirtyBits dirtyBit) { 73 super.markDirtyImpl(node, dirtyBit); 74 cameraAccessor.doMarkDirty(node, dirtyBit); 75 } 76 77 @Override 78 protected BaseBounds computeGeomBoundsImpl(Node node, BaseBounds bounds, 79 BaseTransform tx) { 80 return cameraAccessor.doComputeGeomBounds(node, bounds, tx); 81 } 82 83 @Override 84 protected boolean computeContainsImpl(Node node, double localX, double localY) { 85 return cameraAccessor.doComputeContains(node, localX, localY); 86 } 87 88 @Override 89 protected Object processMXNodeImpl(Node node, MXNodeAlgorithm alg, MXNodeAlgorithmContext ctx) { 90 return cameraAccessor.doProcessMXNode(node, alg, ctx); 91 } 92 93 public static Point2D project(Camera camera, Point3D p) { 94 return cameraAccessor.project(camera, p); 95 } 96 97 public static Point2D pickNodeXYPlane(Camera camera, Node node, double x, double y) { 98 return cameraAccessor.pickNodeXYPlane(camera, node, x, y); 99 } 100 101 public static Point3D pickProjectPlane(Camera camera, double x, double y) { 102 return cameraAccessor.pickProjectPlane(camera, x, y); 103 } 104 105 public static void setCameraAccessor(final CameraAccessor newAccessor) { 106 if (cameraAccessor != null) { 107 throw new IllegalStateException(); 108 } 109 110 cameraAccessor = newAccessor; 111 } 112 113 public interface CameraAccessor { 114 void doMarkDirty(Node node, DirtyBits dirtyBit); 115 void doUpdatePeer(Node node); 116 BaseBounds doComputeGeomBounds(Node node, BaseBounds bounds, BaseTransform tx); 117 boolean doComputeContains(Node node, double localX, double localY); 118 Object doProcessMXNode(Node node, MXNodeAlgorithm alg, MXNodeAlgorithmContext ctx); 119 Point2D project(Camera camera, Point3D p); 120 Point2D pickNodeXYPlane(Camera camera, Node node, double x, double y); 121 Point3D pickProjectPlane(Camera camera, double x, double y); 122 } 123 124 }