Source Code Cross Referenced for KBKeyFrame.java in  » 6.0-JDK-Modules » java-3d » com » sun » j3d » utils » behaviors » interpolators » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » java 3d » com.sun.j3d.utils.behaviors.interpolators 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $RCSfile: KBKeyFrame.java,v $
003:         *
004:         * Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
005:         *
006:         * Redistribution and use in source and binary forms, with or without
007:         * modification, are permitted provided that the following conditions
008:         * are met:
009:         *
010:         * - Redistribution of source code must retain the above copyright
011:         *   notice, this list of conditions and the following disclaimer.
012:         *
013:         * - Redistribution in binary form must reproduce the above copyright
014:         *   notice, this list of conditions and the following disclaimer in
015:         *   the documentation and/or other materials provided with the
016:         *   distribution.
017:         *
018:         * Neither the name of Sun Microsystems, Inc. or the names of
019:         * contributors may be used to endorse or promote products derived
020:         * from this software without specific prior written permission.
021:         *
022:         * This software is provided "AS IS," without a warranty of any
023:         * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
024:         * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
025:         * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
026:         * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
027:         * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
028:         * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
029:         * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
030:         * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
031:         * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
032:         * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
033:         * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
034:         * POSSIBILITY OF SUCH DAMAGES.
035:         *
036:         * You acknowledge that this software is not designed, licensed or
037:         * intended for use in the design, construction, operation or
038:         * maintenance of any nuclear facility.
039:         *
040:         * $Revision: 1.4 $
041:         * $Date: 2007/02/09 17:20:11 $
042:         * $State: Exp $
043:         */
044:
045:        package com.sun.j3d.utils.behaviors.interpolators;
046:
047:        import javax.media.j3d.*;
048:        import java.util.*;
049:        import javax.vecmath.*;
050:        import com.sun.j3d.internal.J3dUtilsI18N;
051:
052:        /**
053:         * This class represents a Key Frame that can be used for Kochanek-Bartels
054:         * (also called TCB or Tension-Continuity-Bias Splines) spline interpolation.
055:         *
056:         * @since Java3D 1.2
057:         */
058:        public class KBKeyFrame {
059:
060:            // Position, Rotation and Scale
061:            public Point3f position;
062:            public float heading;
063:            public float pitch;
064:            public float bank;
065:            public Point3f scale;
066:
067:            // Tension, Continuity & Bias
068:            public float tension;
069:            public float continuity;
070:            public float bias;
071:
072:            // Sample Time 
073:            public float knot;
074:
075:            // Interpolation type (linear = 0 -> spline interpolation)
076:            public int linear;
077:
078:            // default constructor 
079:            KBKeyFrame() {
080:                tension = continuity = bias = 0.0f;
081:            }
082:
083:            public KBKeyFrame(KBKeyFrame kf) {
084:                this (kf.knot, kf.linear, kf.position, kf.heading, kf.pitch,
085:                        kf.bank, kf.scale, kf.tension, kf.continuity, kf.bias);
086:
087:            }
088:
089:            /**
090:             * Creates a key frame using the given inputs. 
091:             *
092:             * @param k knot value for this key frame 
093:             * @param l the linear flag (0 - Spline Interp, 1, Linear Interp
094:             * @param pos the position at the key frame
095:             * @param hd the heading value at the key frame
096:             * @param pi the pitch value at the key frame
097:             * @param bk the bank value at the key frame
098:             * @param s the scales at the key frame
099:             * @param t tension (-1.0 < t < 1.0)
100:             * @param c continuity (-1.0 < c < 1.0)
101:             * @param b bias (-1.0 < b < 1.0)
102:             */
103:            public KBKeyFrame(float k, int l, Point3f pos, float hd, float pi,
104:                    float bk, Point3f s, float t, float c, float b) {
105:
106:                knot = k;
107:                linear = l;
108:                position = new Point3f(pos);
109:                heading = hd;
110:                pitch = pi;
111:                bank = bk;
112:                scale = new Point3f(s);
113:
114:                // Check for valid tension continuity and bias values
115:                if (t < -1.0f || t > 1.0f) {
116:                    throw new IllegalArgumentException(J3dUtilsI18N
117:                            .getString("KBKeyFrame0"));
118:                }
119:
120:                if (b < -1.0f || b > 1.0f) {
121:                    throw new IllegalArgumentException(J3dUtilsI18N
122:                            .getString("KBKeyFrame1"));
123:                }
124:
125:                if (c < -1.0f || c > 1.0f) {
126:                    throw new IllegalArgumentException(J3dUtilsI18N
127:                            .getString("KBKeyFrame2"));
128:                }
129:
130:                // copy valid tension, continuity and bias values
131:                tension = t;
132:                continuity = c;
133:                bias = b;
134:            }
135:
136:            /**
137:             * Prints information comtained in this key frame 
138:             * @param tag string tag for identifying debug message
139:             */
140:            public void debugPrint(String tag) {
141:                System.out.println("\n" + tag);
142:                System.out.println(" knot = " + knot);
143:                System.out.println(" linear = " + linear);
144:                System.out.println(" position(x,y,z) = " + position.x + " "
145:                        + position.y + " " + position.z);
146:
147:                System.out.println(" tension = " + tension);
148:                System.out.println(" continuity = " + continuity);
149:                System.out.println(" bias = " + bias);
150:            }
151:        }
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