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-rw-r--r--src/demos/util/MD2.java702
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diff --git a/src/demos/util/MD2.java b/src/demos/util/MD2.java
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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 java.nio.*;
-import java.nio.channels.*;
-import java.util.*;
-
-/** Reader for MD2 models, used by Quake II. */
-
-public class MD2 {
- public static Model loadMD2(String filename) throws IOException {
- List/*<IFrame>*/ ifr = new ArrayList/*<IFrame>*/();
- loadFrames(filename, ifr);
- return computeModel(ifr);
- }
-
- public static Model loadMD2(InputStream in) throws IOException {
- List/*<IFrame>*/ ifr = new ArrayList/*<IFrame>*/();
- loadFrames(in, ifr);
- return computeModel(ifr);
- }
-
- public static class FileHeader {
- public int ident;
- public int version;
- public int skinwidth;
- public int skinheight;
- public int framesize; // byte size of each frame
- public int num_skins;
- public int num_xyz;
- public int num_st; // greater than num_xyz for seams
- public int num_tris;
- public int num_glcmds; // dwords in strip/fan command list
- public int num_frames;
- public int ofs_skins; // each skin is a MAX_SKINNAME string
- public int ofs_st; // byte offset from start for stverts
- public int ofs_tris; // offset for dtriangles
- public int ofs_frames; // offset for first frame
- public int ofs_glcmds;
- public int ofs_end; // end of file
- };
-
- public static class FileCompressedVertex {
- public byte[] v = new byte[3]; // scaled byte to fit in frame mins/maxs
- public byte lightnormalindex;
- }
-
- public static class FileFrame {
- public float[] scale = new float[3]; // multiply byte verts by this
- public float[] translate = new float[3]; // then add this
- public String name; // frame name from grabbing
- public FileCompressedVertex[] verts; // variable sized
- }
-
- public static class FileModel {
- public int[] glcmds;
- public FileFrame[] frames;
- }
-
- public static class PositionNormal implements Cloneable {
- public float x, y, z;
- public float nx, ny, nz;
- public Object clone() {
- try {
- return super.clone();
- } catch (CloneNotSupportedException e) {
- throw new RuntimeException(e);
- }
- }
- }
-
- public static class TexCoord {
- public float s,t;
- }
-
- public static class Vertex {
- public int pn_index;
- public TexCoord tc = new TexCoord();
- }
-
- public static class Triangle {
- public Vertex[] v = new Vertex[3];
- public boolean kill;
- }
-
- public static class WingedEdge {
- public int[] e = new int[2]; // vertex index
- public int[] w = new int[2]; // triangle index: for "open" models, w[1] == -1 on open edges
- }
-
- public static class Plane implements Cloneable {
- public float a,b,c,d;
- public Object clone() {
- try {
- return super.clone();
- } catch (CloneNotSupportedException e) {
- throw new RuntimeException(e);
- }
- }
- }
-
- public static class Frame implements Cloneable {
- public PositionNormal[] pn; // [pn_index]
- public Plane[] triplane; // [tri_num]
-
- public Object clone() {
- Frame res = new Frame();
- res.pn = new PositionNormal[pn.length];
- for (int i = 0; i < pn.length; i++) {
- res.pn[i] = (PositionNormal) pn[i].clone();
- }
- res.triplane = new Plane[triplane.length];
- for (int i = 0; i < triplane.length; i++) {
- res.triplane[i] = (Plane) triplane[i].clone();
- }
- return res;
- }
- }
-
- public static class Model {
- public Frame[] f;
- public Triangle[] tri; // [tri_num]
- public WingedEdge[] edge; // [edge_num]
- }
-
- public static void computePlane(PositionNormal a, PositionNormal b, PositionNormal c, Plane p) {
- float[] v0 = new float[3];
- v0[0] = b.x - a.x;
- v0[1] = b.y - a.y;
- v0[2] = b.z - a.z;
- float[] v1 = new float[3];
- v1[0] = c.x - a.x;
- v1[1] = c.y - a.y;
- v1[2] = c.z - a.z;
- float[] cr = new float[3];
- cr[0] = v0[1] * v1[2] - v0[2] * v1[1];
- cr[1] = v0[2] * v1[0] - v0[0] * v1[2];
- cr[2] = v0[0] * v1[1] - v0[1] * v1[0];
- float l = (float) Math.sqrt(cr[0] * cr[0] + cr[1] * cr[1] + cr[2] * cr[2]);
- if (l == 0) {
- // degenerate triangle
- p.a = p.b = p.c = p.d = 0;
- return;
- }
- p.a = cr[0] / l;
- p.b = cr[1] / l;
- p.c = cr[2] / l;
-
- p.d = -(p.a * a.x + p.b * a.y + p.c * a.z); // signed distance of a point on the plane from the origin
- }
-
- //----------------------------------------------------------------------
- // Internals only below this point
- //
-
- private static Model computeModel(List/*<IFrame>*/ ifr) throws IOException {
- if (!compareFrames(ifr)) {
- throw new IOException("unsuitable model -- frames aren't same");
- }
- Model m = new Model();
- m.tri = ((IFrame) ifr.get(0)).tri;
- m.f = new Frame[ifr.size()];
- for (int i = 0; i < ifr.size(); i++) {
- Frame f = new Frame();
- m.f[i] = f;
- IFrame it = (IFrame) ifr.get(i);
- f.pn = it.pn;
- computeFramePlanes(m.tri, f);
- }
- computeWingedEdges(m);
- return m;
- }
-
- private static class IFrame {
- PositionNormal[] pn;
- Triangle[] tri;
- }
-
- // normal table lifted from Mark Kilgard's md2bump demo
- private static final float[] normalTable = new float[] {
- -0.525731f, 0.000000f, 0.850651f,
- -0.442863f, 0.238856f, 0.864188f,
- -0.295242f, 0.000000f, 0.955423f,
- -0.309017f, 0.500000f, 0.809017f,
- -0.162460f, 0.262866f, 0.951056f,
- 0.000000f, 0.000000f, 1.000000f,
- 0.000000f, 0.850651f, 0.525731f,
- -0.147621f, 0.716567f, 0.681718f,
- 0.147621f, 0.716567f, 0.681718f,
- 0.000000f, 0.525731f, 0.850651f,
- 0.309017f, 0.500000f, 0.809017f,
- 0.525731f, 0.000000f, 0.850651f,
- 0.295242f, 0.000000f, 0.955423f,
- 0.442863f, 0.238856f, 0.864188f,
- 0.162460f, 0.262866f, 0.951056f,
- -0.681718f, 0.147621f, 0.716567f,
- -0.809017f, 0.309017f, 0.500000f,
- -0.587785f, 0.425325f, 0.688191f,
- -0.850651f, 0.525731f, 0.000000f,
- -0.864188f, 0.442863f, 0.238856f,
- -0.716567f, 0.681718f, 0.147621f,
- -0.688191f, 0.587785f, 0.425325f,
- -0.500000f, 0.809017f, 0.309017f,
- -0.238856f, 0.864188f, 0.442863f,
- -0.425325f, 0.688191f, 0.587785f,
- -0.716567f, 0.681718f, -0.147621f,
- -0.500000f, 0.809017f, -0.309017f,
- -0.525731f, 0.850651f, 0.000000f,
- 0.000000f, 0.850651f, -0.525731f,
- -0.238856f, 0.864188f, -0.442863f,
- 0.000000f, 0.955423f, -0.295242f,
- -0.262866f, 0.951056f, -0.162460f,
- 0.000000f, 1.000000f, 0.000000f,
- 0.000000f, 0.955423f, 0.295242f,
- -0.262866f, 0.951056f, 0.162460f,
- 0.238856f, 0.864188f, 0.442863f,
- 0.262866f, 0.951056f, 0.162460f,
- 0.500000f, 0.809017f, 0.309017f,
- 0.238856f, 0.864188f, -0.442863f,
- 0.262866f, 0.951056f, -0.162460f,
- 0.500000f, 0.809017f, -0.309017f,
- 0.850651f, 0.525731f, 0.000000f,
- 0.716567f, 0.681718f, 0.147621f,
- 0.716567f, 0.681718f, -0.147621f,
- 0.525731f, 0.850651f, 0.000000f,
- 0.425325f, 0.688191f, 0.587785f,
- 0.864188f, 0.442863f, 0.238856f,
- 0.688191f, 0.587785f, 0.425325f,
- 0.809017f, 0.309017f, 0.500000f,
- 0.681718f, 0.147621f, 0.716567f,
- 0.587785f, 0.425325f, 0.688191f,
- 0.955423f, 0.295242f, 0.000000f,
- 1.000000f, 0.000000f, 0.000000f,
- 0.951056f, 0.162460f, 0.262866f,
- 0.850651f, -0.525731f, 0.000000f,
- 0.955423f, -0.295242f, 0.000000f,
- 0.864188f, -0.442863f, 0.238856f,
- 0.951056f, -0.162460f, 0.262866f,
- 0.809017f, -0.309017f, 0.500000f,
- 0.681718f, -0.147621f, 0.716567f,
- 0.850651f, 0.000000f, 0.525731f,
- 0.864188f, 0.442863f, -0.238856f,
- 0.809017f, 0.309017f, -0.500000f,
- 0.951056f, 0.162460f, -0.262866f,
- 0.525731f, 0.000000f, -0.850651f,
- 0.681718f, 0.147621f, -0.716567f,
- 0.681718f, -0.147621f, -0.716567f,
- 0.850651f, 0.000000f, -0.525731f,
- 0.809017f, -0.309017f, -0.500000f,
- 0.864188f, -0.442863f, -0.238856f,
- 0.951056f, -0.162460f, -0.262866f,
- 0.147621f, 0.716567f, -0.681718f,
- 0.309017f, 0.500000f, -0.809017f,
- 0.425325f, 0.688191f, -0.587785f,
- 0.442863f, 0.238856f, -0.864188f,
- 0.587785f, 0.425325f, -0.688191f,
- 0.688191f, 0.587785f, -0.425325f,
- -0.147621f, 0.716567f, -0.681718f,
- -0.309017f, 0.500000f, -0.809017f,
- 0.000000f, 0.525731f, -0.850651f,
- -0.525731f, 0.000000f, -0.850651f,
- -0.442863f, 0.238856f, -0.864188f,
- -0.295242f, 0.000000f, -0.955423f,
- -0.162460f, 0.262866f, -0.951056f,
- 0.000000f, 0.000000f, -1.000000f,
- 0.295242f, 0.000000f, -0.955423f,
- 0.162460f, 0.262866f, -0.951056f,
- -0.442863f, -0.238856f, -0.864188f,
- -0.309017f, -0.500000f, -0.809017f,
- -0.162460f, -0.262866f, -0.951056f,
- 0.000000f, -0.850651f, -0.525731f,
- -0.147621f, -0.716567f, -0.681718f,
- 0.147621f, -0.716567f, -0.681718f,
- 0.000000f, -0.525731f, -0.850651f,
- 0.309017f, -0.500000f, -0.809017f,
- 0.442863f, -0.238856f, -0.864188f,
- 0.162460f, -0.262866f, -0.951056f,
- 0.238856f, -0.864188f, -0.442863f,
- 0.500000f, -0.809017f, -0.309017f,
- 0.425325f, -0.688191f, -0.587785f,
- 0.716567f, -0.681718f, -0.147621f,
- 0.688191f, -0.587785f, -0.425325f,
- 0.587785f, -0.425325f, -0.688191f,
- 0.000000f, -0.955423f, -0.295242f,
- 0.000000f, -1.000000f, 0.000000f,
- 0.262866f, -0.951056f, -0.162460f,
- 0.000000f, -0.850651f, 0.525731f,
- 0.000000f, -0.955423f, 0.295242f,
- 0.238856f, -0.864188f, 0.442863f,
- 0.262866f, -0.951056f, 0.162460f,
- 0.500000f, -0.809017f, 0.309017f,
- 0.716567f, -0.681718f, 0.147621f,
- 0.525731f, -0.850651f, 0.000000f,
- -0.238856f, -0.864188f, -0.442863f,
- -0.500000f, -0.809017f, -0.309017f,
- -0.262866f, -0.951056f, -0.162460f,
- -0.850651f, -0.525731f, 0.000000f,
- -0.716567f, -0.681718f, -0.147621f,
- -0.716567f, -0.681718f, 0.147621f,
- -0.525731f, -0.850651f, 0.000000f,
- -0.500000f, -0.809017f, 0.309017f,
- -0.238856f, -0.864188f, 0.442863f,
- -0.262866f, -0.951056f, 0.162460f,
- -0.864188f, -0.442863f, 0.238856f,
- -0.809017f, -0.309017f, 0.500000f,
- -0.688191f, -0.587785f, 0.425325f,
- -0.681718f, -0.147621f, 0.716567f,
- -0.442863f, -0.238856f, 0.864188f,
- -0.587785f, -0.425325f, 0.688191f,
- -0.309017f, -0.500000f, 0.809017f,
- -0.147621f, -0.716567f, 0.681718f,
- -0.425325f, -0.688191f, 0.587785f,
- -0.162460f, -0.262866f, 0.951056f,
- 0.442863f, -0.238856f, 0.864188f,
- 0.162460f, -0.262866f, 0.951056f,
- 0.309017f, -0.500000f, 0.809017f,
- 0.147621f, -0.716567f, 0.681718f,
- 0.000000f, -0.525731f, 0.850651f,
- 0.425325f, -0.688191f, 0.587785f,
- 0.587785f, -0.425325f, 0.688191f,
- 0.688191f, -0.587785f, 0.425325f,
- -0.955423f, 0.295242f, 0.000000f,
- -0.951056f, 0.162460f, 0.262866f,
- -1.000000f, 0.000000f, 0.000000f,
- -0.850651f, 0.000000f, 0.525731f,
- -0.955423f, -0.295242f, 0.000000f,
- -0.951056f, -0.162460f, 0.262866f,
- -0.864188f, 0.442863f, -0.238856f,
- -0.951056f, 0.162460f, -0.262866f,
- -0.809017f, 0.309017f, -0.500000f,
- -0.864188f, -0.442863f, -0.238856f,
- -0.951056f, -0.162460f, -0.262866f,
- -0.809017f, -0.309017f, -0.500000f,
- -0.681718f, 0.147621f, -0.716567f,
- -0.681718f, -0.147621f, -0.716567f,
- -0.850651f, 0.000000f, -0.525731f,
- -0.688191f, 0.587785f, -0.425325f,
- -0.587785f, 0.425325f, -0.688191f,
- -0.425325f, 0.688191f, -0.587785f,
- -0.425325f, -0.688191f, -0.587785f,
- -0.587785f, -0.425325f, -0.688191f,
- -0.688191f, -0.587785f, -0.425325f
- };
-
- private static void loadFrames(String filename, List/*<IFrame>*/ md2p) throws IOException {
- FileModel mf = loadMD2File(filename);
- computeFrames(mf, md2p);
- }
-
- private static void loadFrames(InputStream in, List/*<IFrame>*/ md2p) throws IOException {
- FileModel mf = loadMD2File(in);
- computeFrames(mf, md2p);
- }
-
- private static void computeFrames(FileModel mf, List/*<IFrame>*/ md2p) throws IOException {
- for (int i = 0; i < mf.frames.length; i++) {
- IFrame f = new IFrame();
- md2p.add(f);
- FileFrame curframe = mf.frames[i];
- f.pn = new PositionNormal[curframe.verts.length];
- for (int j = 0; j < curframe.verts.length; j++) {
- PositionNormal pn = new PositionNormal();
- pn.x = (((curframe.verts[j].v[0] & 0xFF) * curframe.scale[0]) + curframe.translate[0]) * .025f;
- pn.y = (((curframe.verts[j].v[1] & 0xFF) * curframe.scale[1]) + curframe.translate[1]) * .025f;
- pn.z = (((curframe.verts[j].v[2] & 0xFF) * curframe.scale[2]) + curframe.translate[2]) * .025f;
- int normal_index = curframe.verts[j].lightnormalindex & 0xFF;
- pn.nx = normalTable[3 * normal_index + 0];
- pn.ny = normalTable[3 * normal_index + 1];
- pn.nz = normalTable[3 * normal_index + 2];
- f.pn[j] = pn;
- }
-
- List/*<Triangle>*/ tris = new ArrayList();
- int[] idx = new int[1];
- while (mf.glcmds[idx[0]] != 0) {
- int vertnum;
- boolean is_strip;
- if (mf.glcmds[idx[0]] > 0) {
- vertnum = mf.glcmds[idx[0]++]; is_strip = true; // triangle strip
- } else {
- vertnum = -mf.glcmds[idx[0]++]; is_strip = false; // triangle fan
- }
-
- if (is_strip) {
- Vertex[] prev = new Vertex[2];
- prev[0] = extractVertex(mf.glcmds, idx);
- prev[1] = extractVertex(mf.glcmds, idx);
- for (int j = 2; j < vertnum; j++) {
- Triangle tri = new Triangle();
- if ((j % 2) == 0) {
- tri.v[0] = prev[0];
- tri.v[1] = prev[1];
- tri.v[2] = extractVertex(mf.glcmds, idx);
- prev[0] = tri.v[2];
- } else {
- tri.v[0] = prev[1];
- tri.v[1] = extractVertex(mf.glcmds, idx);
- tri.v[2] = prev[0];
- prev[1] = tri.v[1];
- }
- // swap v[1] and v[2] to fix triangle winding
- Vertex hold = tri.v[1];
- tri.v[1] = tri.v[2];
- tri.v[2] = hold;
- tris.add(tri);
- }
- } else {
- // is fan
- Vertex ctr = extractVertex(mf.glcmds, idx);
- Vertex prev = extractVertex(mf.glcmds, idx);
- for (int j = 2; j < vertnum; j++) {
- Triangle tri = new Triangle();
- tri.v[0] = ctr;
- tri.v[1] = prev;
- tri.v[2] = extractVertex(mf.glcmds, idx);
- prev = tri.v[2];
- // swap v[1] and v[2] to fix triangle winding
- Vertex hold = tri.v[1];
- tri.v[1] = tri.v[2];
- tri.v[2] = hold;
- tris.add(tri);
- }
- }
- }
- f.tri = (Triangle[]) tris.toArray(new Triangle[0]);
- }
- }
-
- private static FileModel loadMD2File(ByteBuffer buf) throws IOException {
- buf.order(ByteOrder.LITTLE_ENDIAN);
- FileModel md2p = new FileModel();
- FileHeader header = readHeader(buf);
- buf.position(header.ofs_frames);
- readFrames(buf, header, md2p);
- buf.position(header.ofs_glcmds);
- readGLCommands(buf, header, md2p);
- return md2p;
- }
-
- private static FileModel loadMD2File(InputStream in) throws IOException {
- in = new BufferedInputStream(in);
- int avail = in.available();
- byte[] data = new byte[avail];
- int numRead = 0;
- int pos = 0;
- do {
- if (pos + avail > data.length) {
- byte[] newData = new byte[pos + avail];
- System.arraycopy(data, 0, newData, 0, pos);
- data = newData;
- }
- numRead = in.read(data, pos, avail);
- if (numRead >= 0) {
- pos += numRead;
- }
- avail = in.available();
- } while (avail > 0 && numRead >= 0);
- ByteBuffer buf = ByteBuffer.allocateDirect(pos);
- buf.put(data, 0, pos);
- buf.rewind();
- return loadMD2File(buf);
- }
-
- private static FileModel loadMD2File(String filename) throws IOException {
- FileInputStream fis = new FileInputStream(filename);
- FileChannel chan = fis.getChannel();
- ByteBuffer buf = chan.map(FileChannel.MapMode.READ_ONLY, 0, fis.available());
- FileModel md2p = loadMD2File(buf);
- chan.close();
- fis.close();
- return md2p;
- }
-
- private static FileHeader readHeader(ByteBuffer buf) {
- FileHeader header = new FileHeader();
- header.ident = buf.getInt();
- header.version = buf.getInt();
- header.skinwidth = buf.getInt();
- header.skinheight = buf.getInt();
- header.framesize = buf.getInt();
- header.num_skins = buf.getInt();
- header.num_xyz = buf.getInt();
- header.num_st = buf.getInt();
- header.num_tris = buf.getInt();
- header.num_glcmds = buf.getInt();
- header.num_frames = buf.getInt();
- header.ofs_skins = buf.getInt();
- header.ofs_st = buf.getInt();
- header.ofs_tris = buf.getInt();
- header.ofs_frames = buf.getInt();
- header.ofs_glcmds = buf.getInt();
- header.ofs_end = buf.getInt();
- return header;
- }
-
- private static int numVerts(int framesize) {
- return (framesize >> 2) - 10;
- }
-
- private static void readFrames(ByteBuffer buf, FileHeader header, FileModel md2p) throws IOException {
- int numframes = header.num_frames;
- int framesize = header.framesize;
- int numVerts = numVerts(framesize);
- FileFrame[] frames = new FileFrame[numframes];
- byte[] name = new byte[16];
- for (int i = 0; i < numframes; i++) {
- FileFrame frame = new FileFrame();
- frame.scale[0] = buf.getFloat();
- frame.scale[1] = buf.getFloat();
- frame.scale[2] = buf.getFloat();
- frame.translate[0] = buf.getFloat();
- frame.translate[1] = buf.getFloat();
- frame.translate[2] = buf.getFloat();
- buf.get(name);
- try {
- frame.name = new String(name, "US-ASCII");
- } catch (UnsupportedEncodingException e) {
- throw new IOException(e.toString());
- }
- frame.verts = new FileCompressedVertex[numVerts];
- for (int j = 0; j < numVerts; j++) {
- FileCompressedVertex vert = new FileCompressedVertex();
- buf.get(vert.v);
- vert.lightnormalindex = buf.get();
- frame.verts[j] = vert;
- }
- frames[i] = frame;
- }
- md2p.frames = frames;
- }
-
- private static void readGLCommands(ByteBuffer buf, FileHeader header, FileModel md2p) {
- int num_glcmds = header.num_glcmds;
- int[] glcmds = new int[num_glcmds];
- for (int i = 0; i < num_glcmds; i++) {
- glcmds[i] = buf.getInt();
- }
- md2p.glcmds = glcmds;
- }
-
- private static Vertex extractVertex(int[] glcmds, int[] idx) {
- Vertex v = new Vertex();
- v.tc.s = Float.intBitsToFloat(glcmds[idx[0]++]);
- v.tc.t = Float.intBitsToFloat(glcmds[idx[0]++]);
- v.pn_index = glcmds[idx[0]++];
- return v;
- }
-
- private static boolean compareFrames(List/*<IFrame>*/ m) {
- IFrame f0 = (IFrame) m.get(0);
- boolean same_topology = true;
- boolean same_texcoords = true;
-
- for (int i = 1; i < m.size(); i++) {
- IFrame f = (IFrame) m.get(i);
- if (f.pn.length != f0.pn.length) {
- System.err.println("pn size different for iframe " + i + " : " + f0.pn.length + " != " + f.pn.length);
- same_topology = false;
- }
- if (f.tri.length != f0.tri.length) {
- System.err.println("tri size different for iframe " + i + " : " + f0.tri.length + " != " + f.tri.length);
- same_topology = false;
- }
- if (same_topology) {
- for (int j = 0; j < f.tri.length; j++) {
- Triangle t0 = f0.tri[j];
- Triangle t = f.tri[j];
- for (int k = 0; k < 3; k++) {
- if (t0.v[k].pn_index != t.v[k].pn_index) {
- System.err.println("tri " + j + " triangle pn_index " + k + " different!");
- same_topology = false;
- }
- if (t0.v[k].tc.s != t.v[k].tc.s || t0.v[k].tc.t != t.v[k].tc.t) {
- System.err.println("tri " + j + " triangle tc " + k + " different!");
- same_texcoords = false;
- }
- }
- }
- }
- }
-
- return same_topology && same_texcoords;
- }
-
- /**
- Computes the plane equations for each polygon of a frame.
- */
- private static void computeFramePlanes(Triangle[] tri, Frame f) {
- f.triplane = new Plane[tri.length];
- for (int i = 0; i < tri.length; i++) {
- Triangle t = tri[i];
- int ia = t.v[0].pn_index;
- int ib = t.v[1].pn_index;
- int ic = t.v[2].pn_index;
- Plane p = new Plane();
- computePlane(f.pn[ia], f.pn[ib], f.pn[ic], p);
- f.triplane[i] = p;
- }
- }
-
- private static int computeWingedEdges(Model m) {
- Triangle[] tri = m.tri;
- List/*<WingedEdge>*/ edge = new ArrayList/*<WingedEdge>*/();
-
- // for each triangle, try to add each edge to the winged_edge vector,
- // but check first to see if it's already there
- int tsize = tri.length;
- for (int i = 0; i < tsize; i++) {
- Triangle t = tri[i];
- for (int j = 0; j < 3; j++) {
- WingedEdge we = new WingedEdge();
- we.e[0] = t.v[ j ].pn_index;
- we.e[1] = t.v[(j+1)%3].pn_index;
- we.w[0] = i;
- we.w[1] = -1; // subsequent attempt to add this edge will replace w[1]
- addEdge(edge, we);
- }
- }
- int open_edge = 0;
- for (int i = 0; i < edge.size(); i++) {
- if (((WingedEdge) edge.get(i)).w[1] == -1)
- open_edge++;
- }
- //fprintf(stderr, "out of % edges, there were %d open edges\n", edge.size(), open_edge);
- m.edge = (WingedEdge[]) edge.toArray(new WingedEdge[0]);
- return open_edge;
- }
-
- /**
- add_edge will look to see if the current edge is already in the list.
- If it is not, it will add it. If it is, it will replace the w[1] in
- the existing table with w[0] from the edge being added.
- */
- private static void addEdge(List/*<WingedEdge>*/ edge, WingedEdge we) {
- int esize = edge.size();
- for (int i=0; i < esize; i++) {
- WingedEdge we0 = (WingedEdge) edge.get(i);
- if (we0.e[0] == we.e[0] && we0.e[1] == we.e[1]) {
- System.err.println("facingness different between polys on edge!");
- }
- if(we0.e[0] == we.e[1] && we0.e[1] == we.e[0]) {
- if(we0.w[1] != -1) {
- System.err.println("triple edge! bad...");
- }
- we0.w[1] = we.w[0]; // pair the edge and return
- return;
- }
- }
- edge.add(we); // otherwise, add the new edge
- }
-
- public static void main(String[] args) {
- for (int i = 0; i < args.length; i++) {
- try {
- MD2.Model model = loadMD2(args[i]);
- System.err.println("Successfully parsed " + args[i]);
- } catch (IOException e) {
- System.err.println("Error parsing " + args[i] + ":");
- e.printStackTrace();
- }
- }
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 04:35:14 +0000