Source Code Cross Referenced for Background.java in  » 6.0-JDK-Modules » java-3d » org » jdesktop » j3d » loaders » vrml97 » impl » 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 » org.jdesktop.j3d.loaders.vrml97.impl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $RCSfile: Background.java,v $
003:         *
004:         *      @(#)Background.java 1.33 99/02/20 16:05:38
005:         *
006:         * Copyright (c) 1996-1998 Sun Microsystems, Inc. All Rights Reserved.
007:         *
008:         * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
009:         * modify and redistribute this software in source and binary code form,
010:         * provided that i) this copyright notice and license appear on all copies of
011:         * the software; and ii) Licensee does not utilize the software in a manner
012:         * which is disparaging to Sun.
013:         *
014:         * This software is provided "AS IS," without a warranty of any kind. ALL
015:         * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
016:         * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
017:         * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
018:         * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
019:         * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
020:         * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
021:         * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
022:         * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
023:         * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
024:         * POSSIBILITY OF SUCH DAMAGES.
025:         *
026:         * This software is not designed or intended for use in on-line control of
027:         * aircraft, air traffic, aircraft navigation or aircraft communications; or in
028:         * the design, construction, operation or maintenance of any nuclear
029:         * facility. Licensee represents and warrants that it will not use or
030:         * redistribute the Software for such purposes.
031:         *
032:         * $Revision: 1.2 $
033:         * $Date: 2005/02/03 23:06:51 $
034:         * $State: Exp $
035:         */
036:        /*
037:         *
038:         * @Author: Rick Goldberg
039:         * @Author: Doug Gehringer
040:         */
041:        package org.jdesktop.j3d.loaders.vrml97.impl;
042:
043:        import java.awt.*;
044:        import java.awt.image.*;
045:        import javax.media.j3d.BoundingSphere;
046:        import javax.media.j3d.Bounds;
047:        import javax.media.j3d.BranchGroup;
048:        import javax.media.j3d.ImageComponent;
049:        import javax.media.j3d.ImageComponent2D;
050:        import javax.media.j3d.PolygonAttributes;
051:        import javax.media.j3d.Texture;
052:        import javax.media.j3d.Texture2D;
053:
054:        import javax.vecmath.Point3d;
055:
056:        /**  Description of the Class */
057:        public class Background extends BindableNode {
058:
059:            // from BindableNode
060:            // eventIn  SFBool bind
061:            // eventOut SFTime bindTime;
062:            // eventOut SFBool isBound;
063:
064:            // exposedField
065:            MFFloat groundAngle;
066:            MFColor groundColor;
067:            MFString backUrl;
068:            MFString bottomUrl;
069:            MFString frontUrl;
070:            MFString leftUrl;
071:            MFString rightUrl;
072:            MFString topUrl;
073:            MFFloat skyAngle;
074:            MFColor skyColor;
075:
076:            // spherical mapping divisions per linear space pixel [0..63] -> [0..Pi]
077:            // generated by
078:            // for (p = 0; p<64; p ++) {
079:            //     theta[p] = Math.acos( 1.0 - ((double)p)/31.5) ) ;
080:            // }
081:
082:            double thetas[] = { 0.0, 0.2526477262845635, 0.3582612185126168,
083:                    0.4399759547909189, 0.509443848811893, 0.5711684985655375,
084:                    0.6274557729231908, 0.6796738189082439, 0.7287134507434055,
085:                    0.7751933733103613, 0.8195643276682608, 0.8621670552325126,
086:                    0.9032668821590636, 0.9430755091369839, 0.9817653565786227,
087:                    1.019479357663014, 1.0563378512337098, 1.092443562145639,
088:                    1.1278852827212575, 1.162740649493618, 1.1970782758519827,
089:                    1.2309594173407747, 1.2644392922379775, 1.2975681442542588,
090:                    1.3303921100256373, 1.3629539374415498, 1.3952935892191738,
091:                    1.4274487578895312, 1.4594553124539327, 1.4913476927097593,
092:                    1.5231592641704934, 1.5549226443049409, 1.5866700092848522,
093:                    1.6184333894192997, 1.6502449608800338, 1.6821373411358607,
094:                    1.714143895700262, 1.7462990643706193, 1.7786387161482433,
095:                    1.811200543564156, 1.8440245093355343, 1.8771533613518159,
096:                    1.9106332362490184, 1.9445143777378107, 1.978852004096175,
097:                    2.0137073708685356, 2.0491490914441544, 2.0852548023560833,
098:                    2.122113295926779, 2.1598272970111703, 2.198517144452809,
099:                    2.2383257714307296, 2.2794255983572804, 2.3220283259215324,
100:                    2.366399280279432, 2.412879202846388, 2.461918834681549,
101:                    2.5141368806666025, 2.5704241550242557, 2.6321488047779003,
102:                    2.7016166987988743, 2.7833314350771765, 2.8889449273052294,
103:                    3.141592653589793 };
104:
105:            private final static boolean GROUND = true;
106:            private final static boolean SKY = false;
107:
108:            // This node is not added to the J3D graph directly, so implNode=null
109:            // When the background is bound, it's backgroundImpl is attached to
110:            // the browserRoot
111:            javax.media.j3d.BranchGroup backgroundImpl;
112:            javax.media.j3d.Background background;
113:            javax.media.j3d.Bounds bound;
114:
115:            /**
116:             *Constructor for the Background object
117:             *
118:             *@param  loader Description of the Parameter
119:             */
120:            public Background(Loader loader) {
121:                super (loader, loader.getBackgroundStack());
122:                groundAngle = new MFFloat();
123:                groundColor = new MFColor();
124:                backUrl = new MFString();
125:                bottomUrl = new MFString();
126:                frontUrl = new MFString();
127:                leftUrl = new MFString();
128:                rightUrl = new MFString();
129:                topUrl = new MFString();
130:                skyAngle = new MFFloat();
131:                float[] color = new float[3];
132:                color[0] = 0.3f;
133:                color[1] = 0.3f;
134:                color[2] = 0.3f;
135:                skyColor = new MFColor(color);
136:                loader.addBackground(this );
137:                initFields();
138:            }
139:
140:            /**
141:             *Constructor for the Background object
142:             *
143:             *@param  loader Description of the Parameter
144:             *@param  bind Description of the Parameter
145:             *@param  bindTime Description of the Parameter
146:             *@param  isBound Description of the Parameter
147:             *@param  groundAngle Description of the Parameter
148:             *@param  groundColor Description of the Parameter
149:             *@param  backUrl Description of the Parameter
150:             *@param  bottomUrl Description of the Parameter
151:             *@param  frontUrl Description of the Parameter
152:             *@param  leftUrl Description of the Parameter
153:             *@param  rightUrl Description of the Parameter
154:             *@param  topUrl Description of the Parameter
155:             *@param  skyAngle Description of the Parameter
156:             *@param  skyColor Description of the Parameter
157:             */
158:            public Background(Loader loader, SFBool bind, SFTime bindTime,
159:                    SFBool isBound, MFFloat groundAngle, MFColor groundColor,
160:                    MFString backUrl, MFString bottomUrl, MFString frontUrl,
161:                    MFString leftUrl, MFString rightUrl, MFString topUrl,
162:                    MFFloat skyAngle, MFColor skyColor) {
163:                super (loader, loader.getBackgroundStack(), bind, bindTime,
164:                        isBound);
165:                this .groundAngle = groundAngle;
166:                this .groundColor = groundColor;
167:                this .backUrl = backUrl;
168:                this .bottomUrl = bottomUrl;
169:                this .frontUrl = frontUrl;
170:                this .leftUrl = leftUrl;
171:                this .rightUrl = rightUrl;
172:                this .topUrl = topUrl;
173:                this .skyAngle = skyAngle;
174:                this .skyColor = skyColor;
175:                loader.addBackground(this );
176:                initFields();
177:            }
178:
179:            /**  Description of the Method */
180:            void initImpl() {
181:                BranchGroup bkgGeom = new BranchGroup();
182:
183:                if (skyAngle.mfloat.length > 0) {
184:                    int[] bkg = createBkgGrad(skyColor, skyAngle,
185:                            Background.SKY);
186:                    if (groundAngle.mfloat.length > 0) {
187:                        int[] grndBkg = createBkgGrad(groundColor, groundAngle,
188:                                Background.GROUND);
189:                        for (int i = 0; i < 32; i++) {
190:                            bkg[i + 31] = grndBkg[31 - i];
191:                        }
192:                    }
193:                    Texture2D img = getImageBkg(bkg);
194:                    background = new javax.media.j3d.Background();
195:
196:                    javax.media.j3d.Appearance app = new javax.media.j3d.Appearance();
197:                    app.setTexture(img);
198:                    PolygonAttributes pa = new PolygonAttributes();
199:                    pa.setCullFace(javax.media.j3d.PolygonAttributes.CULL_NONE);
200:                    pa.setBackFaceNormalFlip(true);
201:                    app.setPolygonAttributes(pa);
202:                    bkgGeom = new BranchGroup();
203:                    javax.media.j3d.Group sphere = new com.sun.j3d.utils.geometry.Sphere(
204:                            1.0f,
205:                            com.sun.j3d.utils.geometry.Sphere.GENERATE_TEXTURE_COORDS,
206:                            20, app);
207:                    bkgGeom.addChild(sphere);
208:                    background.setGeometry(bkgGeom);
209:                } else {
210:                    background = new javax.media.j3d.Background(
211:                            skyColor.vals[0], skyColor.vals[1],
212:                            skyColor.vals[2]);
213:                }
214:
215:                background.setApplicationBounds(loader.infiniteBounds);
216:                backgroundImpl = new RGroup();
217:                backgroundImpl.addChild(background);
218:
219:                implReady = true;
220:            }
221:
222:            // create full "external sky" sphere gradient map to a 64x1 "grid" of pixels
223:            // knowing theta and color samples. these will be used to create a texture to
224:            // apply to the infinite background sphere.
225:
226:            /**
227:             *  Description of the Method
228:             *
229:             *@param  colors Description of the Parameter
230:             *@param  angles Description of the Parameter
231:             *@param  dome Description of the Parameter
232:             *@return  Description of the Return Value
233:             *@exception  vrml.InvalidVRMLSyntaxException Description of the Exception
234:             */
235:            int[] createBkgGrad(MFColor colors, MFFloat angles, boolean dome)
236:                    throws vrml.InvalidVRMLSyntaxException {
237:                float[] clrs0 = new float[3];
238:                float[] clrs1 = new float[3];
239:                int c0dex = 0;
240:                int c1dex = 1;
241:                int maxdex = angles.mfloat.length;
242:                int mindex = 0;
243:                int span = dome ? 32 : 64;
244:                int[] gradients = new int[span];
245:                //System.out.println(maxdex);
246:
247:                if (maxdex != (colors.vals.length / 3) - 1) {
248:                    throw new vrml.InvalidVRMLSyntaxException(
249:                            "Background: there shall be one less angle than colors");
250:                }
251:
252:                colors.get1Value(0, clrs0);
253:                gradients[0] = ((int) (clrs0[0] * 255.0f)) << 24
254:                        | ((int) (clrs0[1] * 255.0f)) << 16
255:                        | ((int) (clrs0[2] * 255.0f)) << 8 | (int) 0xff;
256:                for (int i = 1; i < span; i++) {
257:                    if (c1dex <= maxdex) {
258:                        int r;
259:                        int g;
260:                        int b;
261:                        float i0;
262:                        float i1;
263:                        //System.out.println("c0dex "+c0dex+ " c1dex "+c1dex);
264:                        if (c1dex != maxdex) {
265:                            //System.out.println( i+ " " +thetas[i] + " >= " + angles.get1Value(c1dex));
266:                            if (thetas[i] >= angles.get1Value(c1dex)) {
267:                                c0dex = c1dex;
268:                                c1dex++;
269:                            }
270:                        }
271:                        colors.get1Value(c0dex, clrs0);
272:                        colors.get1Value(c1dex, clrs1);
273:                        i0 = (1.0f - (float) Math.cos(thetas[i])) * 0.5f;
274:                        i1 = 1.0f - i0;
275:                        r = (int) ((clrs0[0] * i0 + clrs1[0] * i1) * 255.0f);
276:                        g = (int) ((clrs0[1] * i0 + clrs1[1] * i1) * 255.0f);
277:                        b = (int) ((clrs0[2] * i0 + clrs1[2] * i1) * 255.0f);
278:                        //System.out.println("r "+r+" g "+g+" b "+b);
279:                        gradients[i] = (r << 24) | (g << 16) | (b << 8)
280:                                | (int) 0xff;
281:                    } else {
282:                        gradients[i] = gradients[i - 1];
283:                    }
284:                    //System.out.println(gradients[i]);
285:
286:                }
287:
288:                return gradients;
289:            }
290:
291:            /**
292:             *  Gets the imageBkg attribute of the Background object
293:             *
294:             *@param  gradients Description of the Parameter
295:             *@return  The imageBkg value
296:             */
297:            Texture2D getImageBkg(int[] gradients) {
298:                ImageComponent2D component2D;
299:                BufferedImage bufIm;
300:                ColorModel cm = new DirectColorModel(32, 0xff000000, 0xff0000,
301:                        0xff00, 0xff);
302:                WritableRaster raster = cm
303:                        .createCompatibleWritableRaster(1, 64);
304:                int[] data = ((DataBufferInt) raster.getDataBuffer()).getData();
305:                System.arraycopy(gradients, 0, data, 0, gradients.length);
306:                bufIm = new BufferedImage(cm, raster, false, null);
307:                component2D = new ImageComponent2D(ImageComponent.FORMAT_RGBA,
308:                        bufIm);
309:
310:                Texture2D tex = new Texture2D(Texture.BASE_LEVEL, Texture.RGB,
311:                        1, 64);
312:                // do these need to be for at infinity?
313:                tex.setMinFilter(Texture.BASE_LEVEL_LINEAR);
314:                tex.setMagFilter(Texture.BASE_LEVEL_LINEAR);
315:                tex.setImage(0, component2D);
316:                tex.setEnable(true);
317:                return tex;
318:            }
319:
320:            /**
321:             *  Gets the backgroundImpl attribute of the Background object
322:             *
323:             *@return  The backgroundImpl value
324:             */
325:            public javax.media.j3d.BranchGroup getBackgroundImpl() {
326:                return backgroundImpl;
327:            }
328:
329:            /**
330:             *  Description of the Method
331:             *
332:             *@param  eventInName Description of the Parameter
333:             *@param  time Description of the Parameter
334:             */
335:            public void notifyMethod(String eventInName, double time) {
336:                if (eventInName.equals("bind")) {
337:                    super .notifyMethod("bind", time);
338:                } else if (eventInName.equals("skyColor")) {
339:                    if (skyColor.vals.length == 3) {
340:                        background.setColor(skyColor.vals[0], skyColor.vals[1],
341:                                skyColor.vals[2]);
342:                    } else {
343:                        System.err
344:                                .println("Background: unexpected number of colors");
345:                    }
346:                } else if (eventInName.equals("route_skyColor")) {
347:                    background
348:                            .setCapability(javax.media.j3d.Background.ALLOW_COLOR_WRITE);
349:                } else if (eventInName.equals("route_bind")) {
350:                    // no-op
351:                } else {
352:                    System.err.println("Background: unexpected notify "
353:                            + eventInName);
354:                }
355:            }
356:
357:            /**
358:             *  Gets the type attribute of the Background object
359:             *
360:             *@return  The type value
361:             */
362:            public String getType() {
363:                return "Background";
364:            }
365:
366:            /**
367:             *  Description of the Method
368:             *
369:             *@return  Description of the Return Value
370:             */
371:            public Object clone() {
372:                return new Background(loader, (SFBool) bind.clone(),
373:                        (SFTime) bindTime.clone(), (SFBool) isBound.clone(),
374:                        (MFFloat) groundAngle.clone(), (MFColor) groundColor
375:                                .clone(), (MFString) backUrl.clone(),
376:                        (MFString) bottomUrl.clone(), (MFString) frontUrl
377:                                .clone(), (MFString) leftUrl.clone(),
378:                        (MFString) rightUrl.clone(), (MFString) topUrl.clone(),
379:                        (MFFloat) skyAngle.clone(), (MFColor) skyColor.clone());
380:            }
381:
382:            /**  Description of the Method */
383:            void initFields() {
384:                initBindableFields();
385:                groundAngle.init(this , FieldSpec, Field.EXPOSED_FIELD,
386:                        "groundAngle");
387:                groundColor.init(this , FieldSpec, Field.EXPOSED_FIELD,
388:                        "groundColor");
389:                backUrl.init(this , FieldSpec, Field.EXPOSED_FIELD, "backUrl");
390:                bottomUrl.init(this , FieldSpec, Field.EXPOSED_FIELD,
391:                        "bottomUrl");
392:                frontUrl.init(this , FieldSpec, Field.EXPOSED_FIELD, "frontUrl");
393:                leftUrl.init(this , FieldSpec, Field.EXPOSED_FIELD, "leftUrl");
394:                rightUrl.init(this , FieldSpec, Field.EXPOSED_FIELD, "rightUrl");
395:                topUrl.init(this , FieldSpec, Field.EXPOSED_FIELD, "topUrl");
396:                skyAngle.init(this , FieldSpec, Field.EXPOSED_FIELD, "skyAngle");
397:                skyColor.init(this , FieldSpec, Field.EXPOSED_FIELD, "skyColor");
398:
399:            }
400:
401:            /**
402:             *  Description of the Method
403:             *
404:             *@return  Description of the Return Value
405:             */
406:            public vrml.BaseNode wrap() {
407:                return new org.jdesktop.j3d.loaders.vrml97.node.Background(this);
408:            }
409:        }
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