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.sg.prism.NGNode; 29 import com.sun.javafx.util.Utils; 30 import javafx.geometry.Point2D; 31 import javafx.geometry.Point3D; 32 import javafx.scene.Camera; 33 import javafx.scene.Node; 34 35 /** 36 * Used to access internal methods of Camera. 37 */ 38 public class CameraHelper extends NodeHelper { 39 40 private static final CameraHelper theInstance; 41 private static CameraAccessor cameraAccessor; 42 43 static { 44 theInstance = new CameraHelper(); 45 Utils.forceInit(Camera.class); 46 } 47 48 private static CameraHelper getInstance() { 49 return theInstance; 50 } 51 52 public static void initHelper(Camera camera) { 53 setHelper(camera, getInstance()); 54 } 55 56 @Override 57 protected NGNode createPeerImpl(Node node) { 58 throw new UnsupportedOperationException("Application should not extend Camera class directly."); 59 } 60 61 @Override 62 protected void updatePeerImpl(Node node) { 63 super.updatePeerImpl(node); 64 cameraAccessor.doUpdatePeer(node); 65 } 66 67 @Override 68 protected void markDirtyImpl(Node node, DirtyBits dirtyBit) { 69 super.markDirtyImpl(node, dirtyBit); 70 cameraAccessor.doMarkDirty(node, dirtyBit); 71 } 72 73 public static Point2D project(Camera camera, Point3D p) { 74 return cameraAccessor.project(camera, p); 75 } 76 77 public static Point2D pickNodeXYPlane(Camera camera, Node node, double x, double y) { 78 return cameraAccessor.pickNodeXYPlane(camera, node, x, y); 79 } 80 81 public static Point3D pickProjectPlane(Camera camera, double x, double y) { 82 return cameraAccessor.pickProjectPlane(camera, x, y); 83 } 84 85 public static void setCameraAccessor(final CameraAccessor newAccessor) { 86 if (cameraAccessor != null) { 87 throw new IllegalStateException(); 88 } 89 90 cameraAccessor = newAccessor; 91 } 92 93 public interface CameraAccessor { 94 void doMarkDirty(Node node, DirtyBits dirtyBit); 95 void doUpdatePeer(Node node); 96 Point2D project(Camera camera, Point3D p); 97 Point2D pickNodeXYPlane(Camera camera, Node node, double x, double y); 98 Point3D pickProjectPlane(Camera camera, double x, double y); 99 } 100 101 }