001: /*
002: * $RCSfile: GeometryInfoGenerator.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: 1.2 $
041: * $Date: 2007/02/09 17:17:01 $
042: * $State: Exp $
043: */
044:
045: package org.jdesktop.j3d.utils.geometry;
046:
047: import javax.media.j3d.GeometryArray;
048: import javax.media.j3d.GeometryStripArray;
049: import javax.media.j3d.TriangleFanArray;
050: import javax.media.j3d.TriangleStripArray;
051: import javax.media.j3d.TriangleArray;
052: import javax.media.j3d.QuadArray;
053: import javax.media.j3d.IndexedGeometryArray;
054: import javax.media.j3d.IndexedGeometryStripArray;
055: import javax.media.j3d.IndexedQuadArray;
056: import javax.media.j3d.IndexedTriangleArray;
057: import javax.media.j3d.IndexedTriangleFanArray;
058: import javax.media.j3d.IndexedTriangleStripArray;
059:
060: import com.sun.j3d.utils.geometry.GeometryInfo;
061:
062: /**
063: * Populate a GeometryInfo object from the Geometry provided
064: *
065: * @author Paul Byrne
066: * @version 1.5, 01/18/02
067: */
068: public class GeometryInfoGenerator extends Object {
069:
070: public static void create(GeometryInfo geomInfo,
071: GeometryArray geomArray) {
072: if (geomArray instanceof GeometryStripArray)
073: create(geomInfo, (GeometryStripArray) geomArray);
074: else if (geomArray instanceof TriangleArray) {
075: geomInfo.reset(GeometryInfo.TRIANGLE_ARRAY);
076: processGeometryArray(geomInfo, geomArray);
077: } else if (geomArray instanceof QuadArray) {
078: geomInfo.reset(GeometryInfo.QUAD_ARRAY);
079: processGeometryArray(geomInfo, geomArray);
080: } else if (geomArray instanceof IndexedGeometryArray)
081: create(geomInfo, (IndexedGeometryArray) geomArray);
082: else
083: throw new RuntimeException("Unsupported Geometry type "
084: + geomArray.getClass().getName());
085:
086: }
087:
088: private static void create(GeometryInfo geomInfo,
089: GeometryStripArray geomArray) {
090: if (geomArray instanceof TriangleFanArray) {
091: geomInfo.reset(GeometryInfo.TRIANGLE_FAN_ARRAY);
092: } else if (geomArray instanceof TriangleStripArray) {
093: geomInfo.reset(GeometryInfo.TRIANGLE_STRIP_ARRAY);
094: } else
095: throw new RuntimeException("Unsupported Geometry type "
096: + geomArray.getClass().getName());
097:
098: processGeometryArray(geomInfo, geomArray);
099: processStripArray(geomInfo, geomArray);
100: }
101:
102: private static void create(GeometryInfo geomInfo,
103: IndexedGeometryArray geomArray) {
104: if (geomArray instanceof IndexedQuadArray) {
105: geomInfo.reset(GeometryInfo.QUAD_ARRAY);
106: } else if (geomArray instanceof IndexedTriangleArray) {
107: geomInfo.reset(GeometryInfo.TRIANGLE_ARRAY);
108: } else if (geomArray instanceof IndexedTriangleFanArray) {
109: geomInfo.reset(GeometryInfo.TRIANGLE_FAN_ARRAY);
110: processIndexStripArray(geomInfo,
111: (IndexedGeometryStripArray) geomArray);
112: } else if (geomArray instanceof IndexedTriangleStripArray) {
113: geomInfo.reset(GeometryInfo.TRIANGLE_STRIP_ARRAY);
114: processIndexStripArray(geomInfo,
115: (IndexedGeometryStripArray) geomArray);
116: }
117:
118: processGeometryArray(geomInfo, geomArray);
119: processIndexedArray(geomInfo, geomArray);
120: }
121:
122: private static void processGeometryArray(GeometryInfo geomInfo,
123: GeometryArray geomArray) {
124: int vertexFormat = geomArray.getVertexFormat();
125: int vertexCount = geomArray.getVertexCount();
126:
127: double[] coords = new double[vertexCount * 3];
128: geomArray.getCoordinates(0, coords);
129: geomInfo.setCoordinates(coords);
130:
131: if ((vertexFormat & GeometryArray.NORMALS) == GeometryArray.NORMALS) {
132: float[] normals = new float[vertexCount * 3];
133: geomArray.getNormals(0, normals);
134: geomInfo.setNormals(normals);
135: }
136:
137: if ((vertexFormat & GeometryArray.COLOR_4) == GeometryArray.COLOR_4) {
138: float[] colors = new float[vertexCount * 4];
139: geomArray.getColors(0, colors);
140: geomInfo.setColors4(colors);
141: } else if ((vertexFormat & GeometryArray.COLOR_3) != 0) {
142: float[] colors = new float[vertexCount * 3];
143: geomArray.getColors(0, colors);
144: geomInfo.setColors3(colors);
145: }
146:
147: if ((vertexFormat & GeometryArray.TEXTURE_COORDINATE_3) == GeometryArray.TEXTURE_COORDINATE_3) {
148: float[] tex = new float[vertexCount * 3];
149: geomArray.getTextureCoordinates(0, 0, tex);
150: geomInfo.setTextureCoordinates(0, tex);
151: } else if ((vertexFormat & GeometryArray.TEXTURE_COORDINATE_2) != 0) {
152: float[] tex = new float[vertexCount * 2];
153: geomArray.getTextureCoordinates(0, 0, tex);
154: geomInfo.setTextureCoordinates(0, tex);
155: }
156:
157: }
158:
159: private static void processIndexedArray(GeometryInfo geomInfo,
160: IndexedGeometryArray geomArray) {
161: int indexCount = geomArray.getIndexCount();
162: int vertexFormat = geomArray.getVertexFormat();
163:
164: int[] coordI = new int[indexCount];
165:
166: geomArray.getCoordinateIndices(0, coordI);
167: geomInfo.setCoordinateIndices(coordI);
168:
169: if ((vertexFormat & GeometryArray.NORMALS) != 0) {
170: int[] normalI = new int[indexCount];
171: geomArray.getNormalIndices(0, normalI);
172: geomInfo.setNormalIndices(normalI);
173: }
174:
175: if ((vertexFormat & GeometryArray.COLOR_3) != 0
176: || (vertexFormat & GeometryArray.COLOR_4) != 0) {
177: int[] colorI = new int[indexCount];
178: geomArray.getColorIndices(0, colorI);
179: geomInfo.setColorIndices(colorI);
180: }
181:
182: if ((vertexFormat & GeometryArray.TEXTURE_COORDINATE_2) != 0
183: || (vertexFormat & GeometryArray.TEXTURE_COORDINATE_3) != 0) {
184: int[] texI = new int[indexCount];
185: geomArray.getTextureCoordinateIndices(0, 0, texI);
186: geomInfo.setTextureCoordinateIndices(0, texI);
187: }
188:
189: }
190:
191: private static void processStripArray(GeometryInfo geomInfo,
192: GeometryStripArray geomArray) {
193: int[] strips = new int[geomArray.getNumStrips()];
194: geomArray.getStripVertexCounts(strips);
195:
196: geomInfo.setStripCounts(strips);
197: }
198:
199: private static void processIndexStripArray(GeometryInfo geomInfo,
200: IndexedGeometryStripArray geomArray) {
201: int[] strips = new int[geomArray.getNumStrips()];
202: geomArray.getStripIndexCounts(strips);
203:
204: geomInfo.setStripCounts(strips);
205: }
206: }
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