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source: orxonox.OLD/trunk/src/lib/graphics/importer/objModel.cc @ 5863

Last change on this file since 5863 was 5319, checked in by bensch, 19 years ago

orxonox/trunk: some minor file-handling

File size: 6.5 KB
Line 
1/*
2   orxonox - the future of 3D-vertical-scrollers
3
4   Copyright (C) 2004 orx
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10
11   ### File Specific:
12   main-programmer: Benjamin Grauer
13   co-programmer: ...
14*/
15
16#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_IMPORTER
17
18#include "objModel.h"
19
20#include <stdio.h>
21#include <string.h>
22#include <stdlib.h>
23
24#define PARSELINELENGTH 8192
25
26#include "debug.h"
27#include "compiler.h"
28
29/**
30 *  Crates a 3D-Model, loads in a File and scales it.
31 * @param fileName file to parse and load (must be a .obj file)
32 * @param scaling The factor that the model will be scaled with.
33*/
34OBJModel::OBJModel(const char* fileName, float scaling) : Model(fileName)
35{
36  this->objPath = "./";
37
38  this->scaleFactor = scaling;
39
40  this->importFile (fileName);
41
42  this->finalize();
43}
44
45/**
46 *  deletes an OBJModel.
47
48   Looks if any from model allocated space is still in use, and if so deleted it.
49*/
50OBJModel::~OBJModel()
51{
52  PRINTF(4)("Deleting the obj-names\n");
53  if (this->objPath)
54    delete []this->objPath;
55}
56
57/**
58 *  Imports a obj file and handles the the relative location
59 * @param fileName The file to import
60
61   Splits the FileName from the DirectoryName
62*/
63bool OBJModel::importFile (const char* fileName)
64{
65  PRINTF(4)("preparing to read in file: %s\n", fileName);
66  // splitting the
67  char* split = NULL;
68
69  if (!(split = strrchr(fileName, '/')))
70    split = strrchr(fileName, '\\'); // windows Case
71  if (split)
72    {
73      int len = split - fileName+1;
74      this->objPath = new char[len +2];
75      strncpy(this->objPath, fileName, len);
76      this->objPath[len] = '\0';
77      PRINTF(4)("Resolved file %s to Path %s.\n", fileName, this->objPath);
78    }
79  else
80    this->objPath = "./";
81  Material::addTexturePath(this->objPath);
82
83  this->readFromObjFile (fileName);
84  return true;
85}
86
87/**
88 *  Reads in the .obj File and sets all the Values.
89   This function does read the file, parses it for the occurence of things like vertices, faces and so on, and executes the specific tasks
90*/
91bool OBJModel::readFromObjFile(const char* fileName)
92{
93  FILE* stream;
94  if( (stream = fopen (fileName, "r")) == NULL)
95    {
96      PRINTF(2)("Object File Could not be Opened %s\n", fileName);
97      return false;
98    }
99
100  char buffer[PARSELINELENGTH];
101  while(fgets(buffer, PARSELINELENGTH, stream))
102    {
103      // line termiated with \0 not \n
104      if (buffer[strlen(buffer)-1] == '\n')
105        buffer[strlen(buffer)-1] = '\0';
106
107      // case vertice
108      if (!strncmp(buffer, "v ", 2))
109        {
110          this->addVertex(buffer+2);
111        }
112
113      // case face
114      else if (!strncmp(buffer, "f ", 2))
115        {
116          this->addFace (buffer+2);
117        }
118
119      else if (!strncmp(buffer, "mtllib ", 7))
120        {
121          this->readMtlLib (buffer+7);
122        }
123
124      else if (!strncmp(buffer, "usemtl ", 7))
125        {
126          this->setMaterial (buffer+7);
127        }
128
129      // case VertexNormal
130      else if (!strncmp(buffer, "vn ", 3))
131        {
132          this->addVertexNormal(buffer+3);
133        }
134
135      // case VertexTextureCoordinate
136      else if (!strncmp(buffer, "vt ", 3))
137        {
138          this->addVertexTexture(buffer+3);
139        }
140      // case group
141      else if (!strncmp(buffer, "g ", 2))
142        {
143          this->addGroup (buffer+2);
144        }
145      else if (!strncmp(buffer, "s ", 2)) //! @todo smoothing groups have to be implemented
146        {
147          PRINTF(3)("smoothing groups not supportet yet. line: %s\n", buffer);
148        }
149    }
150  fclose (stream);
151  return true;
152}
153
154/**
155 * Function to read in a mtl File.
156 * @param mtlFile The .mtl file to read
157 *
158 * This Function parses all Lines of an mtl File.
159 * The reason for it not to be in the materials-class is,
160 * that a material does not have to be able to read itself in from a File.
161 */
162bool OBJModel::readMtlLib (const char* mtlFile)
163{
164  char* fileName = new char [strlen(this->objPath) + strlen(mtlFile)+1];
165  sprintf(fileName, "%s%s", this->objPath, mtlFile);
166
167  FILE* stream;
168  if( (stream = fopen (fileName, "r")) == NULL)
169    {
170      PRINTF(2)("MaterialLibrary could not be opened %s\n", fileName);
171      delete[] fileName;
172      return false;
173    }
174
175  char buffer[PARSELINELENGTH];
176  Material* tmpMat = NULL;
177
178  while(fgets(buffer, PARSELINELENGTH, stream) != NULL)
179    {
180      PRINTF(5)("found line in mtlFile: %s\n", buffer);
181
182      // line termiated with \0 not \n
183      if (buffer[strlen(buffer)-1] == '\n')
184        buffer[strlen(buffer)-1] = '\0';
185
186      // create new Material
187      if (!strncmp(buffer, "newmtl ", 7))
188        {
189          tmpMat = this->addMaterial(buffer+7);//tmpMat->addMaterial(buffer+7);
190        }
191      // setting a illumMode
192      else if (!strncmp(buffer, "illum ", 6))
193        {
194          if (likely(tmpMat != NULL))
195            tmpMat->setIllum(buffer+6);
196
197        }
198      // setting Diffuse Color
199      else if (!strncmp(buffer, "Kd ", 3))
200        {
201          if (likely(tmpMat != NULL))
202            tmpMat->setDiffuse(buffer+3);
203        }
204      // setting Ambient Color
205      else if (!strncmp(buffer, "Ka ", 3))
206        {
207          if (likely(tmpMat != NULL))
208            tmpMat->setAmbient(buffer+3);
209        }
210      // setting Specular Color
211      else if (!strncmp(buffer, "Ks ", 3))
212        {
213          if (likely(tmpMat != NULL))
214            tmpMat->setSpecular(buffer+3);
215        }
216      // setting The Specular Shininess
217      else if (!strncmp(buffer, "Ns ", 3))
218        {
219          if (likely(tmpMat != NULL))
220            tmpMat->setShininess(buffer+3);
221        }
222      // setting up transparency
223      else if (!strncmp(buffer, "d ", 2))
224        {
225          if (likely(tmpMat != NULL))
226            tmpMat->setTransparency(buffer+2);
227        }
228      else if (!strncmp(buffer, "Tf ", 3))
229        {
230          if (likely(tmpMat != NULL))
231            tmpMat->setTransparency(buffer+3);
232        }
233
234      else if (!strncmp(buffer, "map_Kd ", 7))
235        {
236          if (likely(tmpMat != NULL))
237            tmpMat->setDiffuseMap(buffer+7);
238        }
239      else if (!strncmp(buffer, "map_Ka ", 7))
240        {
241          if (likely(tmpMat != NULL))
242            tmpMat->setAmbientMap(buffer+7);
243        }
244      else if (!strncmp(buffer, "map_Ks ", 7))
245        {
246          if (likely(tmpMat != NULL))
247            tmpMat->setSpecularMap(buffer+7);
248        }
249      else if (!strncmp(buffer, "bump ", 5))
250        {
251          if (likely(tmpMat != NULL))
252            tmpMat->setBump(buffer+7);
253        }
254
255
256    }
257  fclose(stream);
258  delete []fileName;
259  return true;
260}
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