&bHello. This is my first post in this forum. I hope I find all the help I need here... This is the problem I have.
I am trying to create a .obj model loader (from .obj files). Searching the internet, I found the specification, and I started programming based on that. here is what I have done so far:
ObjLoaders.h
#ifndef OBJLOADERS_H
#define OBJLOADERS_H
#include <iostream>
#include <vector>
#include <string>
#include <OpenGL/OpenGL.h>
#include <OpenGL/glu.h>
using namespace std;
typedef float vector3f[3];
class OBJFileInfo{
public:
unsigned numVertices;
unsigned numTriangles;
unsigned numVertexNormals;
unsigned numTextureVertex;
OBJFileInfo(){
numVertices = 0;
numTriangles = 0;
numVertexNormals = 0;
numTextureVertex = 0;
}
};
class Triangle{
public:
unsigned TriangleEdges[3];
unsigned TriangleTextureCoords[3];
unsigned TriangleNormals[3];
Triangle(const Triangle& otherTriangle){
for (int i=0; i<3; i++) {
TriangleEdges = otherTriangle.TriangleEdges;
TriangleTextureCoords = otherTriangle.TriangleTextureCoords;
TriangleNormals = otherTriangle.TriangleNormals;
}
}
Triangle(){
reset();
}
void reset(){
for (int i=0; i<3; i++) {
TriangleEdges = 0;
TriangleTextureCoords = 0;
TriangleNormals = 0;
}
}
};
class OBJModel{
OBJFileInfo fileinfo;
public:
vector3f* vertices;
vector3f* vertexNormals;
vector3f* textureVertices;
//Triangle* triangles;
vector<Triangle> triangles;
OBJModel(OBJFileInfo info){
fileinfo = info;
vertices = new vector3f[info.numVertices];
vertexNormals = new vector3f[info.numVertexNormals];
textureVertices = new vector3f[info.numTextureVertex];
//triangles = new Triangle[info.numTriangles];
}
void vertexAtIndex(unsigned index, vector3f resultBuffer){
resultBuffer[0] = vertices[index][0];
resultBuffer[1] = vertices[index][1];
resultBuffer[1] = vertices[index][1];
}
void drawVertexAtIndex(unsigned index){
vector3f vertexToDraw;
vertexToDraw[0] = vertices[index][0];
vertexToDraw[1] = vertices[index][1];
vertexToDraw[1] = vertices[index][1];
glVertex3f(vertexToDraw[0], vertexToDraw[1], vertexToDraw[2]);
}
//TO BE COMPLETED!!!
void drawFaceAtIndex(unsigned index){
unsigned triangleVertexPositions[3];
triangleVertexPositions[0] = triangles[index].TriangleEdges[0];
triangleVertexPositions[1] = triangles[index].TriangleEdges[1];
triangleVertexPositions[2] = triangles[index].TriangleEdges[2];
//cout << triangles[index].TriangleEdges[0] << " " << triangles[index].TriangleEdges[0] << " " << triangles[index].TriangleEdges[0] << '\n';
vector3f v1, v2, v3;
v1[0] = vertices[triangleVertexPositions[0]][0];
v1[1] = vertices[triangleVertexPositions[0]][1];
v1[2] = vertices[triangleVertexPositions[0]][2];
v2[0] = vertices[triangleVertexPositions[1]][0];
v2[1] = vertices[triangleVertexPositions[1]][1];
v2[2] = vertices[triangleVertexPositions[1]][2];
v3[0] = vertices[triangleVertexPositions[2]][0];
v3[1] = vertices[triangleVertexPositions[2]][1];
v3[2] = vertices[triangleVertexPositions[2]][2];
cout << v1[0] << " " << v1[1] << " " << v1[2] << '\n';
cout << v2[0] << " " << v2[1] << " " << v2[2] << '\n';
cout << v3[0] << " " << v3[1] << " " << v3[2] << '\n';
glBegin(GL_TRIANGLES);
glVertex3f(v1[0], v1[1], v1[2]);
glVertex3f(v2[0], v2[1], v2[2]);
glVertex3f(v3[0], v3[1], v3[2]);
glEnd();
}
~OBJModel()
{
delete [] vertices;
delete [] vertexNormals;
delete [] textureVertices;
//delete [] triangles;
}
unsigned numVertices(){return fileinfo.numVertices;}
unsigned numTriangles(){return fileinfo.numTriangles;}
unsigned numVertexNormals(){return fileinfo.numVertexNormals;}
unsigned numTextureVertex(){return fileinfo.numTextureVertex;}
};
void firstPass(char *filename, OBJFileInfo& info);
void secondPass(char *filename, OBJModel *model);
#endif
ObjLoaders.cpp
#include "ObjLoaders.h"
void firstPass(char *filename, OBJFileInfo& info)
{
char buf[128];
FILE *filePointer = fopen(filename, "r");
while ( fscanf(filePointer, "%s", buf) != EOF){
switch (buf[0]) {
case 'v':
switch (buf[1]) {
case 't':
fgets(buf, sizeof(buf), filePointer);
info.numTextureVertex++;
break;
case '\0':
fgets(buf, sizeof(buf), filePointer);
info.numVertices++;
break;
case 'n':
fgets(buf, sizeof(buf), filePointer);
info.numVertexNormals++;
break;
default:
break;
}
break;
case '#':
fgets(buf, sizeof(buf), filePointer);
break;
case 'f':
info.numTriangles++;
//NSLog(@"not implemented yet! %i", info.numTriangles);
break;
default:
fgets(buf, sizeof(buf), filePointer);
break;
}
}
fclose(filePointer);
info.numTriangles--;
}
void secondPass(char *filename, OBJModel *model){
char buf[128];
FILE *filePointer = fopen(filename, "r");
unsigned currentVertexIndex = 0;
unsigned currentvertexNormalIndex = 0;
unsigned currentTextureVertexIndex = 0;
unsigned currentTriangleIndex = 0;
while ( fscanf(filePointer, "%s", buf) != EOF ) {
switch (buf[0]) {
case 'v':{
switch (buf[1]) {
case '\0':{
float a,b,c;
fscanf(filePointer, "%f %f %f", &a, &b, &c);
model->vertices[currentVertexIndex][0] = a;
model->vertices[currentVertexIndex][1] = b;
model->vertices[currentVertexIndex][2] = c;
//cout << a << " " << b << " " << c << '\n';
currentVertexIndex++;
}
break;
case 'n':{
float a,b,c;
fscanf(filePointer, "%f %f %f", &a, &b, &c);
//cout << a << ' ' << b << ' ' << c << '\n';
model->vertexNormals[currentvertexNormalIndex][0] = a;
model->vertexNormals[currentvertexNormalIndex][1] = b;
model->vertexNormals[currentvertexNormalIndex][2] = c;
currentvertexNormalIndex++;
}
break;
case 't':{
float a,b,c;
fscanf(filePointer, "%f %f %f", &a, , &c);
model->textureVertices[currentTextureVertexIndex][0] = a;
model->textureVertices[currentTextureVertexIndex][1] = b;
model->textureVertices[currentTextureVertexIndex][2] = c;
currentTextureVertexIndex++;
}
break;
default:
break;
}
}
break;
case 'f':{
Triangle currentTriangle;
int v,t,n = 0;
fscanf(filePointer, "%s", buf);
if ( strstr(buf, "//") ) {
sscanf(buf, "%d//%d", &v, &n);
currentTriangle.TriangleEdges[0] = v;
currentTriangle.TriangleNormals[0] = n;
fscanf(filePointer, "%d//%d", &v, &n);
currentTriangle.TriangleEdges[1] = v;
currentTriangle.TriangleNormals[1] = n;
fscanf(filePointer, "%d//%d", &v, &n);
currentTriangle.TriangleEdges[2] = v;
currentTriangle.TriangleNormals[2] = n;
}
else if (sscanf(buf, "%d/%d/%d", &v, &t, &n) == 3){
currentTriangle.TriangleEdges[0] = v;
currentTriangle.TriangleTextureCoords[0] = t;
currentTriangle.TriangleNormals[0] = n;
fscanf(filePointer, "%d/%d%d", ¤tTriangle.TriangleEdges[1], ¤tTriangle.TriangleTextureCoords[1], ¤tTriangle.TriangleTextureCoords[1]);
fscanf(filePointer, "%d/%d%d", ¤tTriangle.TriangleEdges[1], ¤tTriangle.TriangleTextureCoords[1], ¤tTriangle.TriangleNormals[1]);
}
else if (sscanf(buf, "%d/%d", &v, &t) == 2){
currentTriangle.TriangleTextureCoords[0] = t;
currentTriangle.TriangleEdges[0] = v;
fscanf(filePointer, "%d/%d", ¤tTriangle.TriangleEdges[1], ¤tTriangle.TriangleTextureCoords[1]);
fscanf(filePointer, "%d/%d", ¤tTriangle.TriangleEdges[2], ¤tTriangle.TriangleTextureCoords[2]);
}
else {
sscanf(buf, "%d", &v);
currentTriangle.TriangleEdges[0] = v;
fscanf(filePointer, "%d", currentTriangle.TriangleEdges[1]);
fscanf(filePointer, "%d", currentTriangle.TriangleEdges[2]);
}
model->triangles.push_back(currentTriangle);
currentTriangleIndex++;
}
break;
default:
fgets(buf, sizeof(buf), filePointer);
break;
}
}
}
the code to draw:
OBJFileInfo objFile;
firstPass(FILENAME2, objFile);
OBJModel model(objFile);
secondPass(FILENAME2, &model);
model.drawFaceAtIndex(1);
Although something is drawn to the screen, I only see garbage! The file is parsed correctly, and all classes end up in having the correct variables stored in them. So it must be a logic error, and not a programming one (and logic errors are hard to spot!). For simplicity reasons I haven't implemented texture or material support, and I am trying to load a file that only contains vertex and vertex normals data.
This is the file, in case you want to run the code yourself:
#
# Wavefront OBJ generated by GLM library
#
# GLM library
# Nate Robins
# ndr@pobox.com
# http://www.pobox.com/~ndr
#
mtllib lightcycle.mtl
# 91 vertices
v -0.675745 -4.181760 0.828977
v -0.675746 -0.260560 1.854730
v 0.677798 -2.070860 -0.100226
v 0.669888 -0.260560 1.854730
v 0.669888 -4.181760 0.828977
v 0.203011 3.536160 -0.847399
v 0.203011 3.851470 -0.511977
v 0.203011 3.207430 -0.525406
v 0.203011 3.536160 -0.150241
v -0.200718 3.536160 -0.150241
v -0.200718 3.851470 -0.511977
v -0.200718 3.207430 -0.538833
v -0.200718 3.536160 -0.847399
v 1.257510 -0.361758 0.887388
v 0.610035 -0.187286 1.704330
v 0.610035 -3.311140 0.887388
v -1.257510 -0.361758 0.888085
v -0.602038 -3.311140 0.888085
v -0.602039 -0.187286 1.705020
v 0.571984 -3.371230 -0.150160
v 0.571984 -3.692720 -0.507515
v 0.571984 -3.054550 -0.512684
v 0.571984 -3.371230 -0.847315
v -0.569690 -3.371230 -0.150160
v -0.569690 -3.054550 -0.512684
v -0.569690 -3.692720 -0.507515
v -0.569690 -3.371230 -0.847315
v -0.675746 2.560710 1.165440
v -0.675504 1.051360 -0.101380
v 0.669887 2.561520 1.165440
v 0.677798 1.051100 -0.101111
v 0.301519 2.480440 -0.547424
v 0.301519 3.536160 0.565185
v 0.301519 3.536160 -1.562820
v 0.301519 4.538160 -0.493712
v 0.002783 3.536160 -1.987540
v 0.002783 5.000000 -0.491226
v 0.002783 3.536160 0.989902
v -0.299225 3.536160 -1.562820
v -0.299225 4.538160 -0.493712
v -0.299225 3.536160 0.565185
v -0.299225 2.480440 -0.533995
v 0.002783 1.978340 -0.547779
v -0.545389 1.646580 -1.553560
v -0.545389 3.002350 -0.509387
v -0.544671 3.530940 -1.150170
v -0.545389 3.530570 -1.559590
v 0.548401 3.530670 -1.150440
v 0.547683 3.532990 -1.559590
v 0.547683 3.002350 -0.508849
v -1.074710 -3.371230 0.597294
v -1.074710 -4.529150 -0.143543
v 0.011553 -5.000000 -0.143341
v 0.011553 -3.371230 0.989982
v 1.077010 -3.371230 0.597294
v 1.077010 -4.529150 -0.143543
v 1.077010 -2.298130 -0.853935
v 0.011553 -1.807680 -0.867211
v -1.074710 -2.298130 -0.853935
v 1.077010 -3.840490 -1.664290
v 0.011553 -3.840490 -2.056980
v -1.074710 -3.840490 -1.664290
v -0.545389 3.529330 0.160689
v 0.547683 3.529330 0.160689
v 0.547683 1.646580 -1.553560
v -0.389670 3.132820 1.122540
v 0.392881 3.134730 1.125790
v 0.393451 2.943360 0.805744
v -0.389097 2.941480 0.802474
v 0.392881 -0.187721 2.056980
v 0.393451 -0.187888 1.694550
v -0.389669 -0.189631 2.053730
v -0.389096 -0.189771 1.691110
v 0.392881 -3.121660 1.598650
v 0.393451 -2.951540 1.251250
v -0.389669 -3.123570 1.595410
v -0.389096 -2.953420 1.247980
v 0.392881 -4.460940 0.882128
v 0.393451 -4.109510 0.815935
v -0.389669 -4.462850 0.878881
v -0.389096 -4.109460 0.815965
v -0.545389 -2.722760 -1.553560
v -0.542968 -2.722760 1.299390
v -0.545389 1.273530 0.348329
v 0.547683 1.273530 0.348329
v 0.547683 -2.722760 1.299390
v 0.549168 -2.723830 -1.553400
v -0.545389 1.905600 1.092650
v -0.545389 3.529330 1.092650
v 0.547683 3.529330 1.092650
v 0.547683 1.905600 1.092650
# 161 normals
vn -1.000000 0.000043 -0.000164
vn -0.695529 0.228198 0.681296
vn 0.999989 -0.000698 0.004692
vn 0.999989 -0.000071 0.004740
vn 0.999985 -0.001397 0.005339
vn 1.000000 0.000000 0.000000
vn -0.727607 0.485071 0.485071
vn -1.000000 -0.000000 -0.000000
vn -0.762493 0.457496 0.457496
vn -0.816497 0.408248 0.408248
vn 0.755312 -0.165813 0.634042
vn -0.650458 0.433360 0.623782
vn -0.751311 -0.166972 0.638477
vn -0.689812 0.328116 0.645368
vn -0.870411 0.348168 0.348085
vn -1.000000 -0.000013 -0.000146
vn -1.000000 -0.000000 -0.000191
vn -0.000037 -0.008133 0.999967
vn -0.000143 0.237274 0.971443
vn -0.000071 0.237306 0.971435
vn 0.999990 0.000592 0.004441
vn 0.999988 0.001182 0.004837
vn 0.990735 0.135771 0.003072
vn 0.990950 0.134093 0.006023
vn 0.991671 -0.000341 -0.128797
vn 0.990653 -0.000193 -0.136404
vn 0.989251 -0.053024 0.136276
vn 0.990060 0.038876 0.135166
vn 0.988948 -0.142679 -0.040308
vn 0.988451 -0.142925 0.050369
vn 0.718758 0.502329 -0.480679
vn 0.739721 0.481013 -0.470574
vn 0.697080 0.523144 -0.490306
vn 0.728037 0.492626 0.476741
vn 0.706889 0.503081 0.497209
vn 0.748475 0.481689 0.455807
vn -0.722445 0.499236 -0.478369
vn -0.743007 0.488333 -0.457681
vn -0.701182 0.509654 -0.498594
vn -0.716825 0.501381 0.484540
vn -0.694993 0.522259 0.494196
vn -0.737935 0.479999 0.474397
vn -0.989280 -0.052461 0.136279
vn -0.989474 0.041017 0.138778
vn -0.988451 -0.142924 0.050369
vn -0.988948 -0.142678 -0.040308
vn -0.991921 -0.001821 -0.126842
vn -0.990653 -0.001044 -0.136403
vn -0.990692 0.135907 0.007691
vn -0.990815 0.134357 0.015289
vn -0.734282 -0.467560 -0.492156
vn -0.709626 -0.491743 -0.504598
vn -0.757948 -0.442747 -0.479052
vn 0.740924 -0.460565 -0.488786
vn 0.722193 -0.469473 -0.507969
vn 0.759063 -0.451290 -0.469212
vn -1.000000 0.000107 0.000214
vn -1.000000 0.000176 -0.000228
vn -1.000000 0.000267 0.000534
vn -0.999998 0.000006 0.001754
vn -0.000984 0.999997 0.002385
vn -0.002214 0.999981 0.005674
vn 0.000247 1.000000 -0.000905
vn 0.000017 0.771683 0.636008
vn 0.000348 0.771406 0.636343
vn -0.000313 0.771959 0.635672
vn -0.256207 -0.536497 0.804070
vn -0.227626 -0.524786 0.820235
vn 0.002409 -0.555019 0.831834
vn 0.002659 -0.571153 0.820840
vn 0.260864 -0.535801 0.803036
vn 0.231834 -0.524251 0.819399
vn 0.270297 0.756003 0.596153
vn -0.082418 0.775548 0.625886
vn 0.107381 0.774012 0.623999
vn 0.214051 0.785420 0.580773
vn -0.281550 0.752851 0.594933
vn -0.335186 0.757543 0.560159
vn 0.261686 0.468109 -0.844034
vn 0.002771 0.505124 -0.863042
vn 0.002409 0.485013 -0.874503
vn 0.219633 0.453754 -0.863637
vn -0.257025 0.468725 -0.845124
vn -0.215624 0.454170 -0.864428
vn -0.249256 -0.857477 -0.450116
vn -0.147496 -0.900986 -0.408006
vn -0.105259 -0.870728 -0.480367
vn 0.074871 -0.872314 -0.483180
vn 0.282281 -0.847936 -0.448689
vn 0.373382 -0.845068 -0.382683
vn -0.613902 -0.614155 -0.495921
vn -0.660614 -0.603626 -0.446346
vn -0.564274 -0.621767 -0.543140
vn -0.826467 0.357975 -0.434519
vn -0.863654 0.374751 -0.337140
vn -0.780066 0.337209 -0.527055
vn 0.613898 -0.614158 -0.495923
vn 0.660610 -0.603629 -0.446349
vn 0.564270 -0.621769 -0.543142
vn 0.774472 0.417297 -0.475454
vn 0.831994 0.298993 -0.467322
vn 0.703497 0.528353 -0.475326
vn 0.620156 -0.494198 0.609241
vn 0.791443 -0.284296 0.541104
vn 0.400472 -0.665533 0.629832
vn -0.782366 -0.365083 0.504597
vn -0.840669 -0.393338 0.372237
vn -0.707072 -0.328899 0.625998
vn -0.828812 0.471259 0.301639
vn -0.872628 0.354766 0.335650
vn -0.771197 0.579907 0.262607
vn 0.828809 0.471263 0.301642
vn 0.872626 0.354769 0.335653
vn 0.771194 0.579911 0.262609
vn 0.000152 0.785917 -0.618331
vn 0.000304 0.786038 -0.618178
vn 0.000000 0.785797 -0.618485
vn 1.000000 -0.000267 -0.000535
vn 1.000000 -0.000105 0.000137
vn 1.000000 -0.000048 -0.000251
vn 0.999998 -0.000006 -0.001755
vn 0.000060 0.858295 -0.513157
vn 0.000037 0.858270 -0.513198
vn 0.000082 0.858319 -0.513116
vn 0.999999 0.000437 0.001549
vn 0.999999 0.000446 0.001573
vn 0.999999 0.000428 0.001526
vn -0.999999 -0.000439 -0.001557
vn -0.999999 -0.000430 -0.001533
vn -0.999999 -0.000449 -0.001580
vn 0.999999 -0.000245 0.001547
vn 0.999999 -0.000244 0.001521
vn 0.999999 -0.000246 0.001573
vn -0.999999 0.000246 -0.001555
vn -0.999999 0.000247 -0.001580
vn -0.999999 0.000245 -0.001529
vn 0.999997 -0.000888 0.002087
vn 0.999995 -0.001081 0.002875
vn 0.999999 -0.000695 0.001300
vn -0.999997 0.000899 -0.002123
vn -0.999999 0.000699 -0.001307
vn -0.999995 0.001098 -0.002939
vn 0.002240 -0.180194 -0.983629
vn -0.000049 -0.175279 -0.984519
vn 0.004529 -0.185104 -0.982709
vn -1.000000 -0.000202 0.000424
vn -1.000000 -0.000404 0.000849
vn -1.000000 -0.000135 0.000283
vn 1.000000 0.000116 0.000147
vn 1.000000 0.000124 0.000520
vn 1.000000 0.000232 0.000294
vn -0.003720 -0.154342 0.988010
vn -0.003714 -0.154344 0.988010
vn -0.003726 -0.154340 0.988011
vn 0.000000 -0.253076 0.967446
vn -0.429191 0.320573 0.844410
vn 0.000000 1.000000 0.000000
vn -0.004658 0.269870 0.962886
vn -0.002503 -0.471736 0.881736
vn -0.002507 -0.471734 0.881737
vn -0.002499 -0.471738 0.881735
# 126 faces (triangles)
g default
usemtl Hull
f 1//1 1//1 2//2
f 3//3 4//4 5//5
usemtl Chassis
f 6//6 7//6 8//6
f 9//6 8//6 7//6
f 10//7 11//8 12//9
f 12//9 11//8 13//10
usemtl Window
f 14//11 15//11 16//11
f 17//12 18//13 19//14
usemtl Chassis
f 20//6 21//6 22//6
f 21//6 23//6 22//6
f 24//7 25//8 26//9
f 26//9 25//8 27//10
usemtl Hull
f 1//15 2//2 28//16
f 28//16 29//17 1//15
f 4//18 30//19 28//20
f 28//20 2//2 4//18
f 31//21 30//22 4//4
f 4//4 3//3 31//21
usemtl Window
f 32//23 8//24 9//25
f 9//25 33//26 32//23
f 32//23 34//27 6//28
f 6//28 8//24 32//23
f 34//27 35//29 7//30
f 7//30 6//28 34//27
f 35//29 33//26 9//25
f 9//25 7//30 35//29
usemtl Hull
f 36//31 37//32 35//31
f 35//31 34//33 36//31
f 37//34 38//35 33//34
f 33//34 35//36 37//34
f 39//37 40//38 37//37
f 37//37 36//39 39//37
f 40//40 41//41 38//40
f 38//40 37//42 40//40
usemtl Window
f 39//43 13//44 11//45
f 11//45 40//46 39//43
f 40//46 11//45 10//47
f 10//47 41//48 40//46
f 42//49 41//48 10//47
f 10//47 12//50 42//49
f 42//49 12//50 13//44
f 13//44 39//43 42//49
usemtl Hull
f 42//51 39//52 36//51
f 36//51 43//53 42//51
f 43//54 36//55 34//54
f 34//54 32//56 43//54
usemtl Chassis
f 44//57 45//58 46//59
f 46//59 47//60 44//57
f 48//61 49//62 47//61
f 47//61 46//63 48//61
f 48//64 46//65 45//64
f 45//64 50//66 48//64
usemtl Hull
f 51//67 52//68 53//69
f 53//69 54//70 51//67
f 55//71 54//70 53//69
f 53//69 56//72 55//71
f 57//73 58//74 54//75
f 54//75 55//76 57//73
f 51//77 54//75 58//74
f 58//74 59//78 51//77
f 60//79 61//80 58//81
f 58//81 57//82 60//79
f 62//83 59//84 58//81
f 58//81 61//80 62//83
f 52//85 62//86 61//87
f 61//87 53//88 52//85
f 60//89 56//90 53//88
f 53//88 61//87 60//89
usemtl Window
f 24//91 51//92 59//91
f 59//91 25//93 24//91
f 24//94 26//95 52//94
f 52//94 51//96 24//94
f 57//97 55//98 20//97
f 20//97 22//99 57//97
f 55//100 56//101 21//100
f 21//100 20//102 55//100
f 60//103 57//104 22//103
f 22//103 23//105 60//103
f 27//106 25//107 59//106
f 59//106 62//108 27//106
f 26//109 27//110 62//109
f 62//109 52//111 26//109
f 60//112 23//113 21//112
f 21//112 56//114 60//112
usemtl Chassis
f 50//115 45//116 63//115
f 63//115 64//117 50//115
f 48//118 50//119 65//120
f 65//120 49//121 48//118
usemtl Hull
f 66//122 67//123 68//122
f 68//122 69//124 66//122
f 70//125 71//126 68//125
f 68//125 67//127 70//125
f 72//128 66//129 69//128
f 69//128 73//130 72//128
usemtl Window
f 74//131 75//132 71//131
f 71//131 70//133 74//131
f 76//134 72//135 73//134
f 73//134 77//136 76//134
usemtl Hull
f 78//137 79//138 75//137
f 75//137 74//139 78//137
f 80//140 76//141 77//140
f 77//140 81//142 80//140
f 80//143 81//144 79//143
f 79//143 78//145 80//143
usemtl Chassis
f 82//146 83//147 84//148
f 84//148 44//57 82//146
f 85//149 86//150 87//151
f 87//151 65//120 85//149
usemtl Window
f 76//152 74//153 70//152
f 70//152 72//154 76//152
usemtl Hull
f 4//18 2//2 1//155
f 1//155 5//156 4//18
usemtl Chassis
f 88//8 45//58 44//57
f 44//57 84//148 88//8
f 64//157 63//157 89//157
f 89//157 90//157 64//157
f 88//8 89//8 63//8
f 63//8 45//58 88//8
f 50//119 64//6 90//6
f 90//6 91//6 50//119
f 85//149 65//120 50//119
f 50//119 91//6 85//149
usemtl Hull
f 72//158 70//158 67//158
f 67//158 66//158 72//158
f 80//159 78//160 74//159
f 74//159 76//161 80//159
The result should be a lightcycle (remember the movie "Tron"?) or at least something that looks like it. But instead I see garbage... Can anyone help me?
