Source Code Cross Referenced for SpotLightRetained.java in  » 6.0-JDK-Modules » java-3d » javax » media » j3d » 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 » javax.media.j3d 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $RCSfile: SpotLightRetained.java,v $
003:         *
004:         * Copyright 1996-2008 Sun Microsystems, Inc.  All Rights Reserved.
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
006:         *
007:         * This code is free software; you can redistribute it and/or modify it
008:         * under the terms of the GNU General Public License version 2 only, as
009:         * published by the Free Software Foundation.  Sun designates this
010:         * particular file as subject to the "Classpath" exception as provided
011:         * by Sun in the LICENSE file that accompanied this code.
012:         *
013:         * This code is distributed in the hope that it will be useful, but WITHOUT
014:         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
015:         * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
016:         * version 2 for more details (a copy is included in the LICENSE file that
017:         * accompanied this code).
018:         *
019:         * You should have received a copy of the GNU General Public License version
020:         * 2 along with this work; if not, write to the Free Software Foundation,
021:         * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
022:         *
023:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
024:         * CA 95054 USA or visit www.sun.com if you need additional information or
025:         * have any questions.
026:         *
027:         * $Revision: 1.6 $
028:         * $Date: 2008/02/28 20:17:31 $
029:         * $State: Exp $
030:         */
031:
032:        package javax.media.j3d;
033:
034:        import javax.vecmath.*;
035:
036:        /**
037:         * A local spot light source object.
038:         */
039:
040:        class SpotLightRetained extends PointLightRetained {
041:            static final int DIRECTION_CHANGED = LAST_POINTLIGHT_DEFINED_BIT << 1;
042:            static final int ANGLE_CHANGED = LAST_POINTLIGHT_DEFINED_BIT << 2;
043:            static final int CONCENTRATION_CHANGED = LAST_POINTLIGHT_DEFINED_BIT << 3;
044:
045:            /**
046:             * The spot light's direction.
047:             */
048:            Vector3f direction = new Vector3f(0.0f, 0.0f, -1.0f);
049:
050:            // The transformed direction of this light
051:            Vector3f xformDirection = new Vector3f(0.0f, 0.0f, -1.0f);
052:
053:            /**
054:             * The spot light's spread angle.
055:             */
056:            float spreadAngle = (float) Math.PI;
057:
058:            /**
059:             * The spot light's concentration.
060:             */
061:            float concentration = 0.0f;
062:
063:            SpotLightRetained() {
064:                this .nodeType = NodeRetained.SPOTLIGHT;
065:                lightType = 4;
066:            }
067:
068:            /**
069:             * Initializes the spot light's spread angle.
070:             * @param spreadAngle the light's spread angle
071:             */
072:            void initSpreadAngle(float spreadAngle) {
073:                if (spreadAngle < 0.0) {
074:                    this .spreadAngle = 0.0f;
075:                } else if (spreadAngle > (float) Math.PI * 0.5f) {
076:                    this .spreadAngle = (float) Math.PI;
077:                } else {
078:                    this .spreadAngle = spreadAngle;
079:                }
080:            }
081:
082:            void setLive(SetLiveState s) {
083:                super .doSetLive(s);
084:                J3dMessage createMessage = super .initMessage(12);
085:                Object[] objs = (Object[]) createMessage.args[4];
086:                objs[9] = new Float(spreadAngle);
087:                objs[10] = new Float(concentration);
088:                objs[11] = new Vector3f(direction);
089:                VirtualUniverse.mc.processMessage(createMessage);
090:            }
091:
092:            /**
093:             * Sets the spot light's spread angle.
094:             * @param spreadAngle the light's spread angle
095:             */
096:            void setSpreadAngle(float spreadAngle) {
097:                initSpreadAngle(spreadAngle);
098:                sendMessage(ANGLE_CHANGED, new Float(this .spreadAngle));
099:            }
100:
101:            /**
102:             * Returns the spot light's spread angle.
103:             * @return the spread angle of the light
104:             */
105:            float getSpreadAngle() {
106:                return this .spreadAngle;
107:            }
108:
109:            /**
110:             * Initializes the spot light's concentration.
111:             * @param concentration the concentration of the light
112:             */
113:            void initConcentration(float concentration) {
114:                this .concentration = concentration;
115:            }
116:
117:            /**
118:             * Sets the spot light's concentration.
119:             * @param concentration the concentration of the light
120:             */
121:            void setConcentration(float concentration) {
122:                initConcentration(concentration);
123:                sendMessage(CONCENTRATION_CHANGED, new Float(concentration));
124:            }
125:
126:            /**
127:             * Retrieves the spot light's concentration.
128:             * @return the concentration of the light
129:             */
130:            float getConcentration() {
131:                return this .concentration;
132:            }
133:
134:            /**
135:             * Initializes the spot light's direction from the vector provided.
136:             * @param direction the new direction of the light
137:             */
138:            void initDirection(Vector3f direction) {
139:                this .direction.set(direction);
140:
141:                if (staticTransform != null) {
142:                    staticTransform.transform.transform(this .direction,
143:                            this .direction);
144:                }
145:            }
146:
147:            /**
148:             * Sets the spot light's direction from the vector provided.
149:             * @param direction the new direction of the light
150:             */
151:            void setDirection(Vector3f direction) {
152:                initDirection(direction);
153:                sendMessage(DIRECTION_CHANGED, new Vector3f(direction));
154:            }
155:
156:            /**
157:             * Initializes this light's direction from the three values provided.
158:             * @param x the new x direction
159:             * @param y the new y direction
160:             * @param z the new z direction
161:             */
162:            void initDirection(float x, float y, float z) {
163:                this .direction.x = x;
164:                this .direction.y = y;
165:                this .direction.z = z;
166:                if (staticTransform != null) {
167:                    staticTransform.transform.transform(this .direction,
168:                            this .direction);
169:                }
170:            }
171:
172:            /**
173:             * Sets this light's direction from the three values provided.
174:             * @param x the new x direction
175:             * @param y the new y direction
176:             * @param z the new z direction
177:             */
178:            void setDirection(float x, float y, float z) {
179:                setDirection(new Vector3f(x, y, z));
180:            }
181:
182:            /**
183:             * Retrieves this light's direction and places it in the
184:             * vector provided.
185:             * @param direction the variable to receive the direction vector
186:             */
187:            void getDirection(Vector3f direction) {
188:                direction.set(this .direction);
189:                if (staticTransform != null) {
190:                    Transform3D invTransform = staticTransform
191:                            .getInvTransform();
192:                    invTransform.transform(direction, direction);
193:                }
194:            }
195:
196:            /** 
197:             * This update function, and its native counterpart,
198:             * updates a spot light.  This includes its color, attenuation,
199:             * transformed position, spread angle, concentration,
200:             * and its transformed position.
201:             */
202:            void update(Context ctx, int lightSlot, double scale) {
203:                validateAttenuationInEc(scale);
204:                Pipeline.getPipeline().updateSpotLight(ctx, lightSlot, color.x,
205:                        color.y, color.z, attenuation.x, linearAttenuationInEc,
206:                        quadraticAttenuationInEc, xformPosition.x,
207:                        xformPosition.y, xformPosition.z, spreadAngle,
208:                        concentration, xformDirection.x, xformDirection.y,
209:                        xformDirection.z);
210:            }
211:
212:            /** 
213:             * This update function, and its native counterpart,
214:             * updates a directional light.  This includes its
215:             * color and its transformed direction.
216:             */
217:            // Note : if you add any more fields here , you need to update
218:            // updateLight() in RenderingEnvironmentStructure
219:            void updateMirrorObject(Object[] objs) {
220:
221:                int component = ((Integer) objs[1]).intValue();
222:                Transform3D trans;
223:                int i;
224:                int numLgts = ((Integer) objs[2]).intValue();
225:                LightRetained[] mLgts = (LightRetained[]) objs[3];
226:                if ((component & DIRECTION_CHANGED) != 0) {
227:                    for (i = 0; i < numLgts; i++) {
228:                        if (mLgts[i].nodeType == NodeRetained.SPOTLIGHT) {
229:                            SpotLightRetained ml = (SpotLightRetained) mLgts[i];
230:                            ml.direction = (Vector3f) objs[4];
231:                            ml.getLastLocalToVworld().transform(ml.direction,
232:                                    ml.xformDirection);
233:                            ml.xformDirection.normalize();
234:                        }
235:                    }
236:                } else if ((component & ANGLE_CHANGED) != 0) {
237:                    for (i = 0; i < numLgts; i++) {
238:                        if (mLgts[i].nodeType == NodeRetained.SPOTLIGHT) {
239:                            SpotLightRetained ml = (SpotLightRetained) mLgts[i];
240:                            ml.spreadAngle = ((Float) objs[4]).floatValue();
241:                        }
242:                    }
243:
244:                } else if ((component & CONCENTRATION_CHANGED) != 0) {
245:
246:                    for (i = 0; i < numLgts; i++) {
247:                        if (mLgts[i].nodeType == NodeRetained.SPOTLIGHT) {
248:                            SpotLightRetained ml = (SpotLightRetained) mLgts[i];
249:                            ml.concentration = ((Float) objs[4]).floatValue();
250:                        }
251:                    }
252:                } else if ((component & INIT_MIRROR) != 0) {
253:                    for (i = 0; i < numLgts; i++) {
254:                        if (mLgts[i].nodeType == NodeRetained.SPOTLIGHT) {
255:                            SpotLightRetained ml = (SpotLightRetained) mLgts[i];
256:                            ml.spreadAngle = ((Float) ((Object[]) objs[4])[9])
257:                                    .floatValue();
258:                            ml.concentration = ((Float) ((Object[]) objs[4])[10])
259:                                    .floatValue();
260:                            ml.direction = (Vector3f) ((Object[]) objs[4])[11];
261:                            ml.getLastLocalToVworld().transform(ml.direction,
262:                                    ml.xformDirection);
263:                            ml.xformDirection.normalize();
264:                        }
265:                    }
266:                }
267:
268:                // call the parent's mirror object update routine
269:                super .updateMirrorObject(objs);
270:            }
271:
272:            // Clones only the retained side, internal use only
273:            protected Object clone() {
274:                SpotLightRetained sr = (SpotLightRetained) super .clone();
275:                sr.direction = new Vector3f(direction);
276:                sr.xformDirection = new Vector3f();
277:                return sr;
278:            }
279:
280:            // Called on the mirror object
281:            void updateTransformChange() {
282:                super .updateTransformChange();
283:
284:                getLastLocalToVworld().transform(direction, xformDirection);
285:                xformDirection.normalize();
286:
287:            }
288:
289:            final void sendMessage(int attrMask, Object attr) {
290:                J3dMessage createMessage = new J3dMessage();
291:                createMessage.threads = targetThreads;
292:                createMessage.universe = universe;
293:                createMessage.type = J3dMessage.LIGHT_CHANGED;
294:                createMessage.args[0] = this ;
295:                createMessage.args[1] = new Integer(attrMask);
296:                if (inSharedGroup)
297:                    createMessage.args[2] = new Integer(numMirrorLights);
298:                else
299:                    createMessage.args[2] = new Integer(1);
300:                createMessage.args[3] = mirrorLights.clone();
301:                createMessage.args[4] = attr;
302:                VirtualUniverse.mc.processMessage(createMessage);
303:            }
304:
305:            void mergeTransform(TransformGroupRetained xform) {
306:                super.mergeTransform(xform);
307:                xform.transform.transform(direction, direction);
308:            }
309:        }
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