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/*
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package demos.util;
import java.io.*;
import javax.media.opengl.*;
/** Renders a bunny.
<P> This file was produced by 3D Exploration Plugin: CPP Export filter.
<P> 3D Exploration
<P> Copyright (c) 1999-2000 X Dimension Software
<P>WWW http://www.xdsoft.com/explorer/ <BR>
eMail info@xdsoft.com
*/
public class Bunny {
/** Generates and returns a display list for the bunny model. */
public static int gen3DObjectList(GL2 gl) throws IOException {
StreamTokenizer tok = new StreamTokenizer(new BufferedReader(new InputStreamReader(
Bunny.class.getClassLoader().getResourceAsStream("demos/data/models/bunny.txt"))));
// Reset tokenizer's syntax so numbers are not parsed
tok.resetSyntax();
tok.wordChars('a', 'z');
tok.wordChars('A', 'Z');
tok.wordChars('0', '9');
tok.wordChars('-', '-');
tok.wordChars('.', '.');
tok.wordChars(128 + 32, 255);
tok.whitespaceChars(0, ' ');
tok.whitespaceChars(',', ',');
tok.whitespaceChars('{', '{');
tok.whitespaceChars('}', '}');
tok.commentChar('/');
tok.quoteChar('"');
tok.quoteChar('\'');
tok.slashSlashComments(true);
tok.slashStarComments(true);
// Read in file
int numFaceIndices = nextInt(tok, "number of face indices");
short[] faceIndices = new short[numFaceIndices * 6];
for (int i = 0; i < numFaceIndices * 6; i++) {
faceIndices[i] = (short) nextInt(tok, "face index");
}
int numVertices = nextInt(tok, "number of vertices");
float[] vertices = new float[numVertices * 3];
for (int i = 0; i < numVertices * 3; i++) {
vertices[i] = nextFloat(tok, "vertex");
}
int numNormals = nextInt(tok, "number of normals");
float[] normals = new float[numNormals * 3];
for (int i = 0; i < numNormals * 3; i++) {
normals[i] = nextFloat(tok, "normal");
}
int lid = gl.glGenLists(1);
gl.glNewList(lid, GL2.GL_COMPILE);
gl.glBegin(GL.GL_TRIANGLES);
for (int i = 0; i < faceIndices.length; i += 6) {
for (int j = 0; j < 3; j++) {
int vi = faceIndices[i + j];
int ni = faceIndices[i + j + 3];
gl.glNormal3f(normals[3 * ni],
normals[3 * ni + 1],
normals[3 * ni + 2]);
gl.glVertex3f(vertices[3 * vi],
vertices[3 * vi + 1],
vertices[3 * vi + 2]);
}
}
gl.glEnd();
gl.glEndList();
return lid;
}
private static int nextInt(StreamTokenizer tok, String error) throws IOException {
if (tok.nextToken() != StreamTokenizer.TT_WORD) {
throw new IOException("Parse error reading " + error + " at line " + tok.lineno());
}
try {
return Integer.parseInt(tok.sval);
} catch (NumberFormatException e) {
throw new IOException("Parse error reading " + error + " at line " + tok.lineno());
}
}
private static float nextFloat(StreamTokenizer tok, String error) throws IOException {
if (tok.nextToken() != StreamTokenizer.TT_WORD) {
throw new IOException("Parse error reading " + error + " at line " + tok.lineno());
}
try {
return Float.parseFloat(tok.sval);
} catch (NumberFormatException e) {
throw new IOException("Parse error reading " + error + " at line " + tok.lineno());
}
}
}
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