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source: orxonox.OLD/trunk/src/lib/graphics/importer/objModel.cc @ 5624

Last change on this file since 5624 was 5319, checked in by bensch, 19 years ago

orxonox/trunk: some minor file-handling

File size: 6.5 KB
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[5014]1/*
[3396]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
[3590]16#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_IMPORTER
17
[3396]18#include "objModel.h"
19
[3908]20#include <stdio.h>
21#include <string.h>
22#include <stdlib.h>
23
24#define PARSELINELENGTH 8192
25
[3475]26#include "debug.h"
[3915]27#include "compiler.h"
[3427]28
[3396]29/**
[4836]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.
[3396]33*/
[3916]34OBJModel::OBJModel(const char* fileName, float scaling) : Model(fileName)
[3396]35{
[4117]36  this->objPath = "./";
37
[3396]38  this->scaleFactor = scaling;
39
40  this->importFile (fileName);
41
[3911]42  this->finalize();
[3396]43}
44
45/**
[4836]46 *  deletes an OBJModel.
[3396]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/**
[4836]58 *  Imports a obj file and handles the the relative location
59 * @param fileName The file to import
[4117]60
61   Splits the FileName from the DirectoryName
[3396]62*/
[3916]63bool OBJModel::importFile (const char* fileName)
[3396]64{
[3548]65  PRINTF(4)("preparing to read in file: %s\n", fileName);
[5014]66  // splitting the
[4117]67  char* split = NULL;
[3396]68
[4117]69  if (!(split = strrchr(fileName, '/')))
70    split = strrchr(fileName, '\\'); // windows Case
71  if (split)
[3396]72    {
[4117]73      int len = split - fileName+1;
74      this->objPath = new char[len +2];
75      strncpy(this->objPath, fileName, len);
[4118]76      this->objPath[len] = '\0';
[5300]77      PRINTF(4)("Resolved file %s to Path %s.\n", fileName, this->objPath);
[3396]78    }
[4371]79  else
80    this->objPath = "./";
81  Material::addTexturePath(this->objPath);
82
[4117]83  this->readFromObjFile (fileName);
[3396]84  return true;
85}
86
87/**
[4836]88 *  Reads in the .obj File and sets all the Values.
[3396]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*/
[4117]91bool OBJModel::readFromObjFile(const char* fileName)
[3396]92{
[3908]93  FILE* stream;
94  if( (stream = fopen (fileName, "r")) == NULL)
[3396]95    {
[5300]96      PRINTF(2)("Object File Could not be Opened %s\n", fileName);
[3396]97      return false;
98    }
99
[3908]100  char buffer[PARSELINELENGTH];
[3910]101  while(fgets(buffer, PARSELINELENGTH, stream))
102    {
103      // line termiated with \0 not \n
104      if (buffer[strlen(buffer)-1] == '\n')
[5014]105        buffer[strlen(buffer)-1] = '\0';
[3910]106
[3396]107      // case vertice
[3908]108      if (!strncmp(buffer, "v ", 2))
[5014]109        {
110          this->addVertex(buffer+2);
111        }
[3396]112
113      // case face
[3908]114      else if (!strncmp(buffer, "f ", 2))
[5014]115        {
116          this->addFace (buffer+2);
117        }
118
[3908]119      else if (!strncmp(buffer, "mtllib ", 7))
[5014]120        {
121          this->readMtlLib (buffer+7);
122        }
[3396]123
[3908]124      else if (!strncmp(buffer, "usemtl ", 7))
[5014]125        {
126          this->setMaterial (buffer+7);
127        }
[3396]128
129      // case VertexNormal
[3908]130      else if (!strncmp(buffer, "vn ", 3))
[5014]131        {
132          this->addVertexNormal(buffer+3);
133        }
134
[3396]135      // case VertexTextureCoordinate
[3908]136      else if (!strncmp(buffer, "vt ", 3))
[5014]137        {
138          this->addVertexTexture(buffer+3);
139        }
[3396]140      // case group
[3908]141      else if (!strncmp(buffer, "g ", 2))
[5014]142        {
143          this->addGroup (buffer+2);
144        }
[4836]145      else if (!strncmp(buffer, "s ", 2)) //! @todo smoothing groups have to be implemented
[5014]146        {
[5300]147          PRINTF(3)("smoothing groups not supportet yet. line: %s\n", buffer);
[5014]148        }
[3396]149    }
[3908]150  fclose (stream);
[3396]151  return true;
152}
153
[5014]154/**
[5300]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 */
[3916]162bool OBJModel::readMtlLib (const char* mtlFile)
[3396]163{
[4117]164  char* fileName = new char [strlen(this->objPath) + strlen(mtlFile)+1];
165  sprintf(fileName, "%s%s", this->objPath, mtlFile);
[3396]166
[3909]167  FILE* stream;
168  if( (stream = fopen (fileName, "r")) == NULL)
[3396]169    {
[4117]170      PRINTF(2)("MaterialLibrary could not be opened %s\n", fileName);
[5300]171      delete[] fileName;
[3396]172      return false;
173    }
[3909]174
175  char buffer[PARSELINELENGTH];
[3915]176  Material* tmpMat = NULL;
[3911]177
[5319]178  while(fgets(buffer, PARSELINELENGTH, stream) != NULL)
[3396]179    {
[3908]180      PRINTF(5)("found line in mtlFile: %s\n", buffer);
[3396]181
[3910]182      // line termiated with \0 not \n
183      if (buffer[strlen(buffer)-1] == '\n')
[5014]184        buffer[strlen(buffer)-1] = '\0';
[3910]185
[3396]186      // create new Material
[3908]187      if (!strncmp(buffer, "newmtl ", 7))
[5014]188        {
189          tmpMat = this->addMaterial(buffer+7);//tmpMat->addMaterial(buffer+7);
190        }
[3396]191      // setting a illumMode
[3908]192      else if (!strncmp(buffer, "illum ", 6))
[5014]193        {
194          if (likely(tmpMat != NULL))
195            tmpMat->setIllum(buffer+6);
[3396]196
[5014]197        }
[3396]198      // setting Diffuse Color
[3908]199      else if (!strncmp(buffer, "Kd ", 3))
[5014]200        {
201          if (likely(tmpMat != NULL))
202            tmpMat->setDiffuse(buffer+3);
203        }
[3396]204      // setting Ambient Color
[3908]205      else if (!strncmp(buffer, "Ka ", 3))
[5014]206        {
207          if (likely(tmpMat != NULL))
208            tmpMat->setAmbient(buffer+3);
209        }
[3396]210      // setting Specular Color
[3908]211      else if (!strncmp(buffer, "Ks ", 3))
[5014]212        {
213          if (likely(tmpMat != NULL))
214            tmpMat->setSpecular(buffer+3);
215        }
[3396]216      // setting The Specular Shininess
[3908]217      else if (!strncmp(buffer, "Ns ", 3))
[5014]218        {
219          if (likely(tmpMat != NULL))
220            tmpMat->setShininess(buffer+3);
221        }
[3396]222      // setting up transparency
[3908]223      else if (!strncmp(buffer, "d ", 2))
[5014]224        {
225          if (likely(tmpMat != NULL))
226            tmpMat->setTransparency(buffer+2);
227        }
[3908]228      else if (!strncmp(buffer, "Tf ", 3))
[5014]229        {
230          if (likely(tmpMat != NULL))
231            tmpMat->setTransparency(buffer+3);
232        }
233
[3908]234      else if (!strncmp(buffer, "map_Kd ", 7))
[5014]235        {
236          if (likely(tmpMat != NULL))
237            tmpMat->setDiffuseMap(buffer+7);
238        }
[3908]239      else if (!strncmp(buffer, "map_Ka ", 7))
[5014]240        {
241          if (likely(tmpMat != NULL))
242            tmpMat->setAmbientMap(buffer+7);
243        }
[3908]244      else if (!strncmp(buffer, "map_Ks ", 7))
[5014]245        {
246          if (likely(tmpMat != NULL))
247            tmpMat->setSpecularMap(buffer+7);
248        }
[3908]249      else if (!strncmp(buffer, "bump ", 5))
[5014]250        {
251          if (likely(tmpMat != NULL))
252            tmpMat->setBump(buffer+7);
253        }
[3396]254
[5014]255
[3396]256    }
[3909]257  fclose(stream);
[3396]258  delete []fileName;
259  return true;
260}
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