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