148 lines
2.9 KiB
C++
148 lines
2.9 KiB
C++
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <ctype.h> // isspace()
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#include <string.h> // strlen()
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#include <GL/gl.h>
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#include <vector>
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#include <string>
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#include <map>
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#include <iostream>
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#include <fstream>
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#include "WFMtl.hh"
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using namespace std;
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#define WHITESPACE " \n\r\t\v"
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#define DEBUGGL
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void WFMtl::clear()
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{
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m_data = map< string, vector< vector<string> > >();
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m_currentMaterialName = "";
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}
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int WFMtl::filesize(const char * filename)
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{
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struct stat st;
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if (stat(filename, &st))
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return -1;
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return st.st_size;
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}
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bool WFMtl::load(const string & filename)
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{
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clear();
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int size = filesize(filename.c_str());
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if (size < 1)
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return false;
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ifstream ifs(filename.c_str());
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if (!ifs.is_open())
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return false;
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char buf[size+1];
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string buildup;
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while (ifs.good())
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{
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ifs.getline(buf, size+1);
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string input = trim(buf);
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int sz = input.size();
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if (sz == 0 || input[0] == '#')
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continue;
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if (input[sz-1] == '\\')
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{
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input[sz-1] = ' ';
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buildup = input;
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continue;
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}
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if (buildup != "")
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input = buildup + input;
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buildup = "";
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processInputLine(input);
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}
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/* DEBUG */
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map<string, vector< vector<string> > >::iterator it = m_data.begin();
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while (it != m_data.end())
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{
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cout << "Material '" << it->first << "':" << endl;
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for (int i = 0; i < it->second.size(); i++)
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{
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cout << " ";
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for (int j = 0; j < it->second[i].size(); j++)
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{
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cout << '\'' << it->second[i][j] << "' ";
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}
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cout << endl;
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}
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}
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/* END DEBUG */
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ifs.close();
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return true;
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}
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string WFMtl::trim(string s)
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{
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size_t lastpos = s.find_last_not_of(WHITESPACE);
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if (lastpos == string::npos)
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return "";
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s.erase(lastpos + 1);
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s.erase(0, s.find_first_not_of(WHITESPACE));
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return s;
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}
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void WFMtl::processInputLine(const std::string & input)
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{
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string line = input;
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vector<string> lineParts;
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for (;;)
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{
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string token = stripFirstToken(line);
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if (token == "")
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break;
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lineParts.push_back(token);
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}
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if (lineParts.size() > 0)
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{
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if ( (lineParts.size() >= 2) && (lineParts[0] == "newmtl") )
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{
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m_currentMaterialName = lineParts[1];
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}
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else if (m_currentMaterialName != "")
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{
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m_data[m_currentMaterialName].push_back(lineParts);
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}
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}
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}
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string WFMtl::stripFirstToken(string & input)
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{
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size_t firstnonspace = input.find_first_not_of(WHITESPACE);
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if (firstnonspace == string::npos)
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return "";
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size_t spaceafter = input.find_first_of(WHITESPACE, firstnonspace);
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string token = input.substr(firstnonspace, spaceafter - firstnonspace);
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input.erase(0, spaceafter);
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return token;
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}
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void WFMtl::renderBegin(const string & mtlname)
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{
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map< string, vector< vector<string> > >::iterator it = m_data.find(mtlname);
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if (it == m_data.end())
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return;
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/* TODO: draw the material at it->second */
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}
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void WFMtl::renderEnd(const string & mtlname)
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{
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map< string, vector< vector<string> > >::iterator it = m_data.find(mtlname);
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if (it == m_data.end())
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return;
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/* TODO: end the material at it->second */
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}
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