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authorJulien Gouesse <[email protected]>2015-11-28 15:11:48 +0100
committerJulien Gouesse <[email protected]>2015-11-28 15:11:48 +0100
commitdbc98deea1884e44da2c74d6ea807253cdefa693 (patch)
tree29c3ee7dea82d7dd773d81f33f645dde67e43a17 /src/javax/media/j3d/DistanceLOD.java
parent2c99f1329dc55bd496bce91b9aba956ecba3c67e (diff)
Relocate package prefix to org.jogamp.java3d
Diffstat (limited to 'src/javax/media/j3d/DistanceLOD.java')
-rw-r--r--src/javax/media/j3d/DistanceLOD.java310
1 files changed, 0 insertions, 310 deletions
diff --git a/src/javax/media/j3d/DistanceLOD.java b/src/javax/media/j3d/DistanceLOD.java
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--- a/src/javax/media/j3d/DistanceLOD.java
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-/*
- * Copyright 1997-2008 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.Point3f;
-
-/**
- * This class defines a distance-based LOD behavior node that operates on
- * a Switch group node to select one of the children of that Switch node
- * based on the distance of this LOD node from the viewer.
- * An array of <i>n</i> monotonically increasing distance values is
- * specified, such that distances[0] is associated with the highest level of
- * detail and distances[<i>n</i>-1] is associated with the lowest level of
- * detail. Based on the actual distance from the viewer to
- * this DistanceLOD node, these <i>n</i>
- * distance values [0, <i>n</i>-1] select from among <i>n</i>+1
- * levels of detail [0, <i>n</i>]. If <i>d</i> is the distance from
- * the viewer to the LOD node, then the equation for determining
- * which level of detail (child of the Switch node) is selected is:
- * <p>
- * <ul>
- * 0, if <i>d</i> <= distances[0]
- * <br>
- * <i>i</i>, if distances[<i>i</i>-1] < <i>d</i> <= distances[<i>i</i>]
- * <br>
- * <i>n</i>, if d > distances[<i>n</i>-1]
- * </ul>
- * <p>
- * Note that both the position and the array of distances are
- * specified in the local coordinate system of this node.
- */
-public class DistanceLOD extends LOD {
-
- private double distances[];
- private Point3f position = new Point3f(0.0f, 0.0f, 0.0f);
-
- // variables for processStimulus
- private Point3f center = new Point3f();
- private Point3f viewPosition = new Point3f();
-
- /**
- * Constructs and initializes a DistanceLOD node with default values.
- * Note that the default constructor creates a DistanceLOD object with
- * a single distance value set to 0.0 and is, therefore, not useful.
- */
- public DistanceLOD() {
- distances = new double[1];
- distances[0] = 0.0;
- }
-
- /**
- * Constructs and initializes a DistanceLOD node with the specified
- * array of distances and a default position of (0,0,0).
- * @param distances an array of values representing LOD cutoff distances
- */
- public DistanceLOD(float[] distances) {
- this.distances = new double[distances.length];
-
- for(int i=0;i<distances.length;i++) {
- this.distances[i] = (double)distances[i];
- }
- }
-
- /**
- * Constructs and initializes a DistanceLOD node with the specified
- * array of distances and the specified position.
- * @param distances an array of values representing LOD cutoff distances
- * @param position the position of this LOD node
- */
- public DistanceLOD(float[] distances, Point3f position) {
- this.distances = new double[distances.length];
-
- for(int i=0;i<distances.length;i++) {
- this.distances[i] = (double)distances[i];
- }
- this.position.set(position);
- }
-
- /**
- * Sets the position of this LOD node. This position is specified in
- * the local coordinates of this node, and is
- * the position from which the distance to the viewer is computed.
- * @param position the new position
- */
- public void setPosition(Point3f position) {
- if (((NodeRetained)retained).staticTransform != null) {
- ((NodeRetained)retained).staticTransform.transform.transform(
- position, this.position);
- } else {
- this.position.set(position);
- }
- }
-
- /**
- * Retrieves the current position of this LOD node. This position is
- * in the local coordinates of this node.
- * @param position the object that will receive the current position
- */
- public void getPosition(Point3f position) {
- if (((NodeRetained)retained).staticTransform != null) {
- Transform3D invTransform =
- ((NodeRetained)retained).staticTransform.getInvTransform();
- invTransform.transform(this.position, position);
- } else {
- position.set(this.position);
- }
- }
-
- /**
- * Returns a count of the number of LOD distance cut-off parameters.
- * Note that the number of levels of detail (children of the Switch node)
- * is one greater than the number of distance values.
- * @return a count of the LOD cut-off distances
- */
- public int numDistances() {
- return distances.length;
- }
-
- /**
- * Returns a particular LOD cut-off distance.
- * @param whichDistance an index specifying which LOD distance to return
- * @return the cut-off distance value associated with the index provided
- */
- public double getDistance(int whichDistance) {
- return distances[whichDistance];
- }
-
- /**
- * Sets a particular LOD cut-off distance.
- * @param whichDistance an index specifying which LOD distance to modify
- * @param distance the cut-off distance associated with the index provided
- */
- public void setDistance(int whichDistance, double distance) {
- distances[whichDistance] = distance;
- }
-
- /**
- * Initialize method that sets up initial wakeup criteria.
- */
- @Override
- public void initialize() {
- // Insert wakeup condition into queue
- wakeupOn(wakeupFrame);
- }
-
- /**
- * Process stimulus method that computes appropriate level of detail.
- * @param criteria an enumeration of the criteria that caused the
- * stimulus
- */
- @Override
- public void processStimulus(Enumeration criteria) {
-
-
- // compute distance in virtual world
- View v = this.getView();
- if( v == null ) {
- wakeupOn(wakeupFrame);
- return;
- }
-
- ViewPlatform vp = v.getViewPlatform();
- if (vp == null) {
- return;
- }
-
- // Handle stimulus
- double viewDistance = 0.0;
- int nSwitches,i,index=0;
-
- Transform3D localToWorldTrans = new Transform3D();
-
- localToWorldTrans.set(((NodeRetained)this.retained).getCurrentLocalToVworld());
-
-
- // DistanceLOD's location in virutal world
- localToWorldTrans.transform( position, center);
-
-
- viewPosition.x = (float)((ViewPlatformRetained)vp.retained).schedSphere.center.x;
- viewPosition.y = (float)((ViewPlatformRetained)vp.retained).schedSphere.center.y;
- viewPosition.z = (float)((ViewPlatformRetained)vp.retained).schedSphere.center.z;
- viewDistance = center.distance( viewPosition);
-
-
- // convert distance into local coordinates
- viewDistance = viewDistance/localToWorldTrans.getDistanceScale();
-
- nSwitches = numSwitches();
-
- index = distances.length; // viewDistance > distances[n-1]
-
- if( viewDistance <= distances[0] ) {
- index = 0;
- } else {
- for (i=1; i < distances.length; i++) {
- if ((viewDistance > distances[i-1]) &&
- (viewDistance <= distances[i])) {
- index = i;
- break;
- }
- }
- }
-
- for(i=nSwitches-1; i>=0; i--) {
- Switch sw = getSwitch(i);
- // Optimize, this behavior is passive
- // Note that we skip the capability check for getWhichChild()
- if (((SwitchRetained) sw.retained).getWhichChild() !=
- index) {
- sw.setWhichChild(index);
- }
- }
- // Insert wakeup condition into queue
- wakeupOn(wakeupFrame);
-
- }
-
- /**
- * Used to create a new instance of the node. This routine is called
- * by <code>cloneTree</code> to duplicate the current node.
- * @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.
- *
- * @see Node#cloneTree
- * @see Node#cloneNode
- * @see Node#duplicateNode
- * @see NodeComponent#setDuplicateOnCloneTree
- */
- @Override
- public Node cloneNode(boolean forceDuplicate) {
- DistanceLOD d = new DistanceLOD();
- d.duplicateNode(this, forceDuplicate);
- return d;
- }
-
-
- /**
- * Copies all DistanceLOD 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);
-
- DistanceLOD lod = (DistanceLOD) originalNode;
-
- int numD = lod.numDistances();
-
- // No API available to set the size of this array after initialize
- this.distances = new double[numD];
-
- for (int i = 0; i < numD; i++)
- setDistance(i, lod.getDistance(i));
-
- Point3f p = new Point3f();
- lod.getPosition(p);
- setPosition(p);
- }
-
- void mergeTransform(TransformGroupRetained xform) {
- xform.transform.transform(position, position);
- }
-}