1 /*
   2  * Copyright (c) 2013, 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 javafx.scene.shape;
  27 
  28 import com.sun.javafx.geom.BaseBounds;
  29 import com.sun.javafx.scene.shape.MeshHelper;
  30 import com.sun.javafx.sg.prism.NGTriangleMesh;
  31 import javafx.application.ConditionalFeature;
  32 import javafx.application.Platform;
  33 import javafx.beans.property.BooleanProperty;
  34 import javafx.beans.property.SimpleBooleanProperty;
  35 import com.sun.javafx.logging.PlatformLogger;
  36 
  37 /**
  38  * Base class for representing a 3D geometric surface.
  39  *
  40  * Note that this is a conditional feature. See
  41  * {@link javafx.application.ConditionalFeature#SCENE3D ConditionalFeature.SCENE3D}
  42  * for more information.
  43  *
  44  * @since JavaFX 8.0
  45  */
  46 public abstract class Mesh {
  47 
  48     /*
  49      * Store the singleton instance of the MeshHelper subclass corresponding
  50      * to the subclass of this instance of Mesh
  51      */
  52     private MeshHelper meshHelper = null;
  53 
  54     static {
  55         // This is used by classes in different packages to get access to
  56         // private and package private methods.
  57         MeshHelper.setMeshAccessor(new MeshHelper.MeshAccessor() {
  58             @Override
  59             public MeshHelper getHelper(Mesh mesh) {
  60                 return mesh.meshHelper;
  61             }
  62 
  63             @Override
  64             public void setHelper(Mesh mesh, MeshHelper meshHelper) {
  65                 mesh.meshHelper = meshHelper;
  66             }
  67         });
  68     }
  69 
  70     protected Mesh() {
  71         if (!Platform.isSupported(ConditionalFeature.SCENE3D)) {
  72             String logname = Mesh.class.getName();
  73             PlatformLogger.getLogger(logname).warning("System can't support "
  74                                                       + "ConditionalFeature.SCENE3D");
  75         }
  76     }
  77 
  78     // Mesh isn't a Node. It can't use the standard dirtyBits pattern that is
  79     // in Node
  80     // TODO: 3D - Material and Mesh have similar pattern. We should look into creating
  81     // a "NodeComponent" class if more non-Node classes are needed.
  82 
  83     // Material isn't a Node. It can't use the standard dirtyBits pattern that is
  84     // in Node
  85     private final BooleanProperty dirty = new SimpleBooleanProperty(true);
  86 
  87     final boolean isDirty() {
  88         return dirty.getValue();
  89     }
  90 
  91     void setDirty(boolean value) {
  92         dirty.setValue(value);
  93     }
  94 
  95     final BooleanProperty dirtyProperty() {
  96         return dirty;
  97     }
  98 
  99     // We only support one type of mesh for FX 8.
 100     abstract NGTriangleMesh getPGMesh();
 101     abstract void updatePG();
 102 
 103     abstract BaseBounds computeBounds(BaseBounds b);
 104 
 105 }