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Diffstat (limited to 'src/javax/media/j3d/Light.java')
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diff --git a/src/javax/media/j3d/Light.java b/src/javax/media/j3d/Light.java new file mode 100644 index 0000000..7e99843 --- /dev/null +++ b/src/javax/media/j3d/Light.java @@ -0,0 +1,729 @@ +/* + * Copyright 1996-2008 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Sun designates this + * particular file as subject to the "Classpath" exception as provided + * by Sun in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +package javax.media.j3d; + +import java.util.Enumeration; + +import javax.vecmath.Color3f; + +/** + * The Light leaf node is an abstract class that defines a set of + * parameters common to all + * types of light. These parameters include the light color, an enable + * flag, and a region of influence in which this Light node is active. + * A Light node also contains a list of Group nodes that specifies the + * hierarchical scope of this Light. If the scope list is empty, + * the Light node has universe scope: all nodes within the region of + * influence are affected by this Light node. If the scope list is + * non-empty, only those Leaf nodes under the Group nodes in the + * scope list are affected by this Light node (subject to the + * influencing bounds). + * <p> + * The light in a scene may come from several light sources that can + * be individually defined. Some of the light in a scene may + * come from a specific direction, known as a directional light, + * from a specific position, known as a point light, or + * from no particular direction or source as with ambient light. + * <p> + * Java 3D supports an arbitrary number of lights. However, the number + * of lights that can be active within the region of influence is + * implementation-dependent and cannot be defined here. + * <p> + * <b>Light Color</b> + * <p> + * The Java 3D lighting model approximates the way light works in + * the real world. Light is defined in terms of the red, green, and + * blue components that combine to create the light color. The + * three color components represent the amount of light emitted + * by the source. + * <p> + * Each of the three colors is represented by a + * floating point value that ranges from 0.0 to 1.0. A combination + * of the three colors such as (1.0, 1.0, 1.0), representing + * the red, green, and blue color values respectively, creates a white + * light with maximum brightness. A combination such as (0.0, 0.0, + * 0.0) creates no light (black). Values between the minimum and + * maximum values of the range produce corresponding brightness + * and colors. For example, a combination of (0.5, 0.5, 0.5) + * produces a 50% grey light. A combination of (1.0, 1.0, 0.0), + * red and green but no blue, produces a yellow light. + * <p> + * If a scene has multiple lights and all lights illuminate an object, + * the effect of the light on the object is the sum of the + * lights. For example, in a scene with two lights, if the first + * light emits (R<sub>1</sub>, G<sub>1</sub>, B<sub>1</sub>) and + * the second light emits (R<sub>2</sub>, G<sub>2</sub>, + * B<sub>2</sub>), the components are added together giving + * (R<sub>1</sub>+R<sub>2</sub>, G<sub>1</sub>+G<sub>2</sub>, + * B<sub>1</sub>+B<sub>2</sub>). + * If the sums of any of the color values is greater than 1.0, + * brighter than the maximum brightness permitted, the color value is + * clamped to 1.0. + * <p> + * <b>Material Colors</b> + * <p> + * In the Java 3D lighting model, the light sources have an effect + * on the scene only when there are object surfaces to absorb or + * reflect the light. Java 3D approximates an object's color + * by calculating the percentage of red, green, and blue light + * the object reflects. An object with a surface color of pure green + * absorbs all of the red and blue light that strikes it and + * reflects all of the green light. Viewing the object in a + * white light, the green color is reflected and you see a green + * object. However, if the green object is viewed in a red light, + * all of the red light is absorbed and the object appears black. + * <p> + * The surface of each object in the scene has + * certain material properties that define how light affects its + * appearance. The object might reflect light in various ways, + * depending on the object's surface type. The object + * might even emit its own light. The Java 3D lighting model specifies + * these material properties as five independent components: emitted + * color, ambient color, diffuse color, specular color, and shininess. + * All of these properties are computed independently, then added + * together to define how the surface of the object appears under + * light (an exception is Ambient light, which does not contribute + * to specular reflection). The material properties are defined + * in the Material class. + * <p> + * <b>Influencing Bounds</b> + * <p> + * Since a scene may be quite large, as large as the universe for + * example, it is often reasonable to limit the influence of lighting + * to a region that is within viewing range. There is no reason + * to waste all that computing power on illuminating objects that + * are too far away to be viewed. In Java 3D, the influencing bounds + * is defined by a Bounds object or a BoundingLeaf object. It should + * be noted that a BoundingLeaf object overrides a Bounds object, + * should both objects be set. + * <p> + * A Bounds object represents a convex, closed volume. Bounds + * defines three different types of containing + * volumes: an axis-aligned-box volume, a spherical volume, and a + * bounding polytope. A BoundingLeaf object also specifies a region + * of influence, but allows an application to specify a bounding + * region in one coordinate system (the local coordinate system of + * the BoundingLeaf node) other than the local coordinate + * system of the node that references the bounds (the Light). + * <p> + * <b>Limiting the Scope</b> + * <p> + * In addition to limiting the lighting calculations to a given + * region of a scene, lighting can also be limited to groups of + * nodes, defined by a Group object. This is known as "scoping." + * All nodes attached to a Group node define a <i>list of scopes</i>. + * Methods in the Light class permit the setting, addition, insertion, + * removal, and enumeration of nodes in the list of scopes. + * <p> + * <b>Two-sided Lighting of Polygons</b> + * <p> + * Java 3D performs lighting calculations for all polygons, whether + * they are front-facing or back-facing. Since most polygon objects + * are constructed with the front face in mind, the back-facing + * portion may not be correctly illuminated. For example, a sphere + * with part of the face cut away so you can see its inside. + * You might want to have the inside surface lit as well as the + * outside surface and you mught also want to define a different + * Material description to reduce shininess, specular color, etc. + * <p> + * For more information, see the "Face culling" and "Back-facing + * normal flip" descriptions in the PolygonAttributes class + * description. + * <p> + * <b>Turning on the Lights</b> + * <p> + * Lighting needs to be explicitly enabled with the setEnable method + * or with the lightOn parameter in the constructor + * before any of the child light sources have any effect on illuminating + * the scene. The child lights may also be enabled or disabled individually. + * <p> + * If lighting is not enabled, the current color of an + * object in the scene is simply mapped onto the object, and none of + * the lighting equations regarding Material properties, such as ambient + * color, diffuse color, specular color, and shininess, are performed. + * However, an object's emitted color, if specified and enabled, will + * still affect that object's appearance. + * <p> + * To disable lighting, call setEnable with <code>false</code> as + * the argument. + * + * @see Material + * @see Bounds + * @see BoundingLeaf + * @see Group + * @see PolygonAttributes + */ + +public abstract class Light extends Leaf { + /** + * Specifies that this Light allows read access to its current state + * information at runtime. + */ + public static final int + ALLOW_STATE_READ = CapabilityBits.LIGHT_ALLOW_STATE_READ; + + /** + * Specifies that this Light allows write access to its current state + * information at runtime. + */ + public static final int + ALLOW_STATE_WRITE = CapabilityBits.LIGHT_ALLOW_STATE_WRITE; + + /** + * Specifies that this Light allows read access to its color + * information at runtime. + */ + public static final int + ALLOW_COLOR_READ = CapabilityBits.LIGHT_ALLOW_COLOR_READ; + + /** + * Specifies that this Light allows write access to its color + * information at runtime. + */ + public static final int + ALLOW_COLOR_WRITE = CapabilityBits.LIGHT_ALLOW_COLOR_WRITE; + + /** + * Specifies that this Light allows read access to its + * influencing bounds and bounds leaf information. + */ + public static final int + ALLOW_INFLUENCING_BOUNDS_READ = CapabilityBits.LIGHT_ALLOW_INFLUENCING_BOUNDS_READ; + + /** + * Specifies that this Light allows write access to its + * influencing bounds and bounds leaf information. + */ + public static final int + ALLOW_INFLUENCING_BOUNDS_WRITE = CapabilityBits.LIGHT_ALLOW_INFLUENCING_BOUNDS_WRITE; + + /** + * Specifies that this Light allows read access to its scope + * information at runtime. + */ + public static final int + ALLOW_SCOPE_READ = CapabilityBits.LIGHT_ALLOW_SCOPE_READ; + + /** + * Specifies that this Light allows write access to its scope + * information at runtime. + */ + public static final int + ALLOW_SCOPE_WRITE = CapabilityBits.LIGHT_ALLOW_SCOPE_WRITE; + + // Array for setting default read capabilities + private static final int[] readCapabilities = { + ALLOW_STATE_READ, + ALLOW_COLOR_READ, + ALLOW_INFLUENCING_BOUNDS_READ, + ALLOW_SCOPE_READ + }; + + /** + * Constructs a Light node with default parameters. The default + * values are as follows: + * <ul> + * enable flag : true<br> + * color : white (1,1,1)<br> + * scope : empty (universe scope)<br> + * influencing bounds : null<br> + * influencing bounding leaf : null<br> + * </ul> + */ + public Light() { + // set default read capabilities + setDefaultReadCapabilities(readCapabilities); + } + + /** + * Constructs and initializes a Light node using the specified color. + * @param color the color of the light source + */ + public Light(Color3f color) { + // set default read capabilities + setDefaultReadCapabilities(readCapabilities); + + ((LightRetained)this.retained).initColor(color); + } + + /** + * Constructs and initializes a Light node using the specified enable + * flag and color. + * @param lightOn flag indicating whether this light is on or off + * @param color the color of the light source + */ + public Light(boolean lightOn, Color3f color) { + // set default read capabilities + setDefaultReadCapabilities(readCapabilities); + + ((LightRetained)this.retained).initEnable(lightOn); + ((LightRetained)this.retained).initColor(color); + } + + /** + * Turns the light on or off. + * @param state true or false to set light on or off + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + */ + public void setEnable(boolean state) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_STATE_WRITE)) + throw new CapabilityNotSetException(J3dI18N.getString("Light0")); + + if (isLive()) + ((LightRetained)this.retained).setEnable(state); + else + ((LightRetained)this.retained).initEnable(state); + } + + /** + * Retrieves this Light's current state (on/off). + * @return this node's current state (on/off) + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + */ + public boolean getEnable() { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_STATE_READ)) + throw new CapabilityNotSetException(J3dI18N.getString("Light1")); + + return ((LightRetained)this.retained).getEnable(); + } + + /** + * Sets the Light's current color. + * @param color the value of this node's new color + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + */ + public void setColor(Color3f color) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_COLOR_WRITE)) + throw new CapabilityNotSetException(J3dI18N.getString("Light2")); + + if (isLive()) + ((LightRetained)this.retained).setColor(color); + else + ((LightRetained)this.retained).initColor(color); + } + + /** + * Gets this Light's current color and places it in the parameter specified. + * @param color the vector that will receive this node's color + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + */ + public void getColor(Color3f color) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_COLOR_READ)) + throw new CapabilityNotSetException(J3dI18N.getString("Light3")); + + ((LightRetained)this.retained).getColor(color); + } + + /** + * Replaces the node at the specified index in this Light node's + * list of scopes with the specified Group node. + * By default, Light nodes are scoped only by their influencing + * bounds. This allows them to be further scoped by a list of + * nodes in the hierarchy. + * @param scope the Group node to be stored at the specified index. + * @param index the index of the Group node to be replaced. + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + * @exception RestrictedAccessException if the specified group node + * is part of a compiled scene graph + */ + public void setScope(Group scope, int index) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_SCOPE_WRITE)) + throw new CapabilityNotSetException(J3dI18N.getString("Light4")); + + if (isLive()) + ((LightRetained)this.retained).setScope(scope, index); + else + ((LightRetained)this.retained).initScope(scope, index); + } + + + /** + * Retrieves the Group node at the specified index from this Light node's + * list of scopes. + * @param index the index of the Group node to be returned. + * @return the Group node at the specified index. + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + */ + public Group getScope(int index) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_SCOPE_READ)) + throw new CapabilityNotSetException(J3dI18N.getString("Light5")); + + return ((LightRetained)this.retained).getScope(index); + } + + + /** + * Inserts the specified Group node into this Light node's + * list of scopes at the specified index. + * By default, Light nodes are scoped only by their influencing + * bounds. This allows them to be further scoped by a list of + * nodes in the hierarchy. + * @param scope the Group node to be inserted at the specified index. + * @param index the index at which the Group node is inserted. + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + * @exception RestrictedAccessException if the specified group node + * is part of a compiled scene graph + */ + public void insertScope(Group scope, int index) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_SCOPE_WRITE)) + throw new CapabilityNotSetException(J3dI18N.getString("Light6")); + + if (isLive()) + ((LightRetained)this.retained).insertScope(scope, index); + else + ((LightRetained)this.retained).initInsertScope(scope, index); + } + + + /** + * Removes the node at the specified index from this Light node's + * list of scopes. If this operation causes the list of scopes to + * become empty, then this Light will have universe scope: all nodes + * within the region of influence will be affected by this Light node. + * @param index the index of the Group node to be removed. + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + * @exception RestrictedAccessException if the group node at the + * specified index is part of a compiled scene graph + */ + public void removeScope(int index) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_SCOPE_WRITE)) + throw new CapabilityNotSetException(J3dI18N.getString("Light7")); + + if (isLive()) + ((LightRetained)this.retained).removeScope(index); + else + ((LightRetained)this.retained).initRemoveScope(index); + } + + +/** + * Returns an enumeration of this Light node's list of scopes. + * @return an Enumeration object containing all nodes in this Light node's + * list of scopes. + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + */ +public Enumeration<Group> getAllScopes() { +if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_SCOPE_READ)) + throw new CapabilityNotSetException(J3dI18N.getString("Light8")); + +return ((LightRetained)this.retained).getAllScopes(); +} + + + /** + * Appends the specified Group node to this Light node's list of scopes. + * By default, Light nodes are scoped only by their influencing + * bounds. This allows them to be further scoped by a list of + * nodes in the hierarchy. + * @param scope the Group node to be appended. + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + * @exception RestrictedAccessException if the specified group node + * is part of a compiled scene graph + */ + public void addScope(Group scope) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_SCOPE_WRITE)) + throw new CapabilityNotSetException(J3dI18N.getString("Light9")); + + if (isLive()) + ((LightRetained)this.retained).addScope(scope); + else + ((LightRetained)this.retained).initAddScope(scope); + } + + + /** + * Returns the number of nodes in this Light node's list of scopes. + * If this number is 0, then the list of scopes is empty and this + * Light node has universe scope: all nodes within the region of + * influence are affected by this Light node. + * @return the number of nodes in this Light node's list of scopes. + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + */ + public int numScopes() { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_SCOPE_READ)) + throw new CapabilityNotSetException(J3dI18N.getString("Light8")); + + return ((LightRetained)this.retained).numScopes(); + } + + + /** + * Retrieves the index of the specified Group node in this + * Light node's list of scopes. + * + * @param scope the Group node to be looked up. + * @return the index of the specified Group node; + * returns -1 if the object is not in the list. + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + * + * @since Java 3D 1.3 + */ + public int indexOfScope(Group scope) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_SCOPE_READ)) + throw new CapabilityNotSetException(J3dI18N.getString("Light8")); + + return ((LightRetained)this.retained).indexOfScope(scope); + } + + + /** + * Removes the specified Group node from this Light + * node's list of scopes. If the specified object is not in the + * list, the list is not modified. If this operation causes the + * list of scopes to become empty, then this Light + * will have universe scope: all nodes within the region of + * influence will be affected by this Light node. + * + * @param scope the Group node to be removed. + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + * @exception RestrictedAccessException if the specified group node + * is part of a compiled scene graph + * + * @since Java 3D 1.3 + */ + public void removeScope(Group scope) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_SCOPE_WRITE)) + throw new CapabilityNotSetException(J3dI18N.getString("Light7")); + + if (isLive()) + ((LightRetained)this.retained).removeScope(scope); + else + ((LightRetained)this.retained).initRemoveScope(scope); + } + + + /** + * Removes all Group nodes from this Light node's + * list of scopes. The Light node will then have + * universe scope: all nodes within the region of influence will + * be affected by this Light node. + * + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + * @exception RestrictedAccessException if any group node in this + * node's list of scopes is part of a compiled scene graph + * + * @since Java 3D 1.3 + */ + public void removeAllScopes() { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_SCOPE_WRITE)) + throw new CapabilityNotSetException(J3dI18N.getString("Light7")); + + if (isLive()) + ((LightRetained)this.retained).removeAllScopes(); + else + ((LightRetained)this.retained).initRemoveAllScopes(); + } + + + /** + * Sets the Light's influencing region to the specified bounds. + * This is used when the influencing bounding leaf is set to null. + * @param region the bounds that contains the Light's new influencing + * region. + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + */ + public void setInfluencingBounds(Bounds region) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_INFLUENCING_BOUNDS_WRITE)) + throw new CapabilityNotSetException(J3dI18N.getString("Light11")); + + if (isLive()) + ((LightRetained)this.retained).setInfluencingBounds(region); + else + ((LightRetained)this.retained).initInfluencingBounds(region); + } + + /** + * Retrieves the Light node's influencing bounds. + * @return this Light's influencing bounds information + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + */ + public Bounds getInfluencingBounds() { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_INFLUENCING_BOUNDS_READ)) + throw new CapabilityNotSetException(J3dI18N.getString("Light12")); + + return ((LightRetained)this.retained).getInfluencingBounds(); + } + + /** + * Sets the Light's influencing region to the specified bounding leaf. + * When set to a value other than null, this overrides the influencing + * bounds object. + * @param region the bounding leaf node used to specify the Light + * node's new influencing region. + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + */ + public void setInfluencingBoundingLeaf(BoundingLeaf region) { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_INFLUENCING_BOUNDS_WRITE)) + throw new CapabilityNotSetException(J3dI18N.getString("Light11")); + + if (isLive()) + ((LightRetained)this.retained).setInfluencingBoundingLeaf(region); + else + ((LightRetained)this.retained).initInfluencingBoundingLeaf(region); + } + + /** + * Retrieves the Light node's influencing bounding leaf. + * @return this Light's influencing bounding leaf information + * @exception CapabilityNotSetException if appropriate capability is + * not set and this object is part of live or compiled scene graph + */ + public BoundingLeaf getInfluencingBoundingLeaf() { + if (isLiveOrCompiled()) + if(!this.getCapability(ALLOW_INFLUENCING_BOUNDS_READ)) + throw new CapabilityNotSetException(J3dI18N.getString("Light12")); + + return ((LightRetained)this.retained).getInfluencingBoundingLeaf(); + } + + + + /** + * Copies all Light information from + * <code>originalNode</code> into + * the current node. This method is called from the + * <code>cloneNode</code> method which is, in turn, called by the + * <code>cloneTree</code> method.<P> + * + * @param originalNode the original node to duplicate. + * @param forceDuplicate when set to <code>true</code>, causes the + * <code>duplicateOnCloneTree</code> flag to be ignored. When + * <code>false</code>, the value of each node's + * <code>duplicateOnCloneTree</code> variable determines whether + * NodeComponent data is duplicated or copied. + * + * @exception RestrictedAccessException if this object is part of a live + * or compiled scenegraph. + * + * @see Node#duplicateNode + * @see Node#cloneTree + * @see NodeComponent#setDuplicateOnCloneTree + */ + @Override + void duplicateAttributes(Node originalNode, boolean forceDuplicate) { + super.duplicateAttributes(originalNode, forceDuplicate); + + LightRetained attr = (LightRetained) originalNode.retained; + LightRetained rt = (LightRetained) retained; + + Color3f c = new Color3f(); + attr.getColor(c); + rt.initColor(c); + rt.initInfluencingBounds(attr.getInfluencingBounds()); + + Enumeration<Group> elm = attr.getAllScopes(); + while (elm.hasMoreElements()) { + // this reference will set correctly in updateNodeReferences() callback + rt.initAddScope(elm.nextElement()); + } + + // this reference will set correctly in updateNodeReferences() callback + rt.initInfluencingBoundingLeaf(attr.getInfluencingBoundingLeaf()); + + rt.initEnable(attr.getEnable()); + } + + /** + * Callback used to allow a node to check if any scene graph objects + * referenced + * by that node have been duplicated via a call to <code>cloneTree</code>. + * This method is called by <code>cloneTree</code> after all nodes in + * the sub-graph have been duplicated. The cloned Leaf node's method + * will be called and the Leaf node can then look up any object references + * by using the <code>getNewObjectReference</code> method found in the + * <code>NodeReferenceTable</code> object. If a match is found, a + * reference to the corresponding object in the newly cloned sub-graph + * is returned. If no corresponding reference is found, either a + * DanglingReferenceException is thrown or a reference to the original + * object is returned depending on the value of the + * <code>allowDanglingReferences</code> parameter passed in the + * <code>cloneTree</code> call. + * <p> + * NOTE: Applications should <i>not</i> call this method directly. + * It should only be called by the cloneTree method. + * + * @param referenceTable a NodeReferenceTableObject that contains the + * <code>getNewObjectReference</code> method needed to search for + * new object instances. + * @see NodeReferenceTable + * @see Node#cloneTree + * @see DanglingReferenceException + */ + @Override + public void updateNodeReferences(NodeReferenceTable referenceTable) { + + + LightRetained rt = (LightRetained) retained; + BoundingLeaf bl = rt.getInfluencingBoundingLeaf(); + + if (bl != null) { + Object o = referenceTable.getNewObjectReference(bl); + rt.initInfluencingBoundingLeaf((BoundingLeaf)o); + } + + int num = rt.numScopes(); + for (int i=0; i < num; i++) { + rt.initScope((Group) referenceTable. + getNewObjectReference(rt.getScope(i)), i); + } + } + +} |