added (in progress) WFMtl class, clear() method

git-svn-id: svn://anubis/misc/wfobj@20 bd8a9e45-a331-0410-811e-c64571078777

Makefile

@@ -1,17 +1,18 @@
 
 CXX      := g++
 CXXFLAGS := -O2
-TARGET   := WFObj.o
+SOURCE   := WFObj.cc WFMtl.cc driver.cc
-SOURCE   := WFObj.cc
+OBJS     := $(SOURCE:.cc=.o)
-LIBS     := -lGL
+LDFLAGS  := -lGL
+TARGET   := driver
 
-all: $(TARGET) driver
+all: $(TARGET)
 
-$(TARGET): $(SOURCE) $(SOURCE:.cc=.hh)
+$(TARGET): $(OBJS)
-	$(CXX) -c -o $@ $< $(CXXFLAGS)
+	$(CXX) -o $@ $^ $(LDFLAGS)
 
-driver: driver.cc $(TARGET)
+%.o: %.cc
-	$(CXX) -o $@ $< $(TARGET) $(CXXFLAGS) $(LIBS)
+	$(CXX) -c -o $@ $^ $(CXXFLAGS)
 
 clean:
-	-rm -f *~ *.o
+	-rm -f *~ *.o $(TARGET)

WFMtl.cc

@@ -0,0 +1,134 @@
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <ctype.h>		// isspace()
+#include <string.h>		// strlen()
+#include <GL/gl.h>
+#include <vector>
+#include <string>
+#include <map>
+#include <iostream>
+#include <fstream>
+#include "WFMtl.hh"
+using namespace std;
+
+#define WHITESPACE " \n\r\t\v"
+#define DEBUGGL
+
+void WFMtl::clear()
+{
+	m_data = map< string, vector< vector<string> > >();
+	m_currentMaterialName = "";
+}
+
+int WFMtl::filesize(const char * filename)
+{
+	struct stat st;
+	if (stat(filename, &st))
+		return -1;
+	return st.st_size;
+}
+
+bool WFMtl::load(const string & filename)
+{
+	clear();
+
+	int size = filesize(filename.c_str());
+	if (size < 1)
+		return false;
+
+	ifstream ifs(filename.c_str());
+	if (!ifs.is_open())
+		return false;
+	char buf[size+1];
+
+	string buildup;
+	while (ifs.good())
+	{
+		ifs.getline(buf, size+1);
+		string input = trim(buf);
+		int sz = input.size();
+		if (sz == 0 || input[0] == '#')
+			continue;
+		if (input[sz-1] == '\\')
+		{
+			input[sz-1] = ' ';
+			buildup = input;
+			continue;
+		}
+		if (buildup != "")
+			input = buildup + input;
+		buildup = "";
+		processInputLine(input);
+	}
+
+	/* DEBUG */
+	map<string, vector< vector<string> > >::iterator it = m_data.begin();
+	while (it != m_data.end())
+	{
+		cout << "Material '" << it->first << "':" << endl;
+		for (int i = 0; i < it->second.size(); i++)
+		{
+			cout << "  ";
+			for (int j = 0; j < it->second[i].size(); j++)
+			{
+				cout << '\'' << it->second[i][j] << "' ";
+			}
+			cout << endl;
+		}
+	}
+	/* END DEBUG */
+
+	ifs.close();
+	return true;
+}
+
+string WFMtl::trim(string s)
+{
+	size_t lastpos = s.find_last_not_of(WHITESPACE);
+	if (lastpos == string::npos)
+		return "";
+	s.erase(lastpos + 1);
+	s.erase(0, s.find_first_not_of(WHITESPACE));
+	return s;
+}
+
+void WFMtl::processInputLine(const std::string & input)
+{
+	string line = input;
+	vector<string> lineParts;
+	for (;;)
+	{
+		string token = stripFirstToken(line);
+		if (token == "")
+			break;
+		lineParts.push_back(token);
+	}
+	if (lineParts.size() > 0)
+	{
+		if ( (lineParts.size() >= 2) && (lineParts[0] == "newmtl") )
+		{
+			m_currentMaterialName = lineParts[1];
+		}
+		else if (m_currentMaterialName != "")
+		{
+			m_data[m_currentMaterialName].push_back(lineParts);
+		}
+	}
+}
+
+string WFMtl::stripFirstToken(string & input)
+{
+	size_t firstnonspace = input.find_first_not_of(WHITESPACE);
+	if (firstnonspace == string::npos)
+		return "";
+	size_t spaceafter = input.find_first_of(WHITESPACE, firstnonspace);
+	string token = input.substr(firstnonspace, spaceafter - firstnonspace);
+	input.erase(0, spaceafter);
+	return token;
+}
+
+void WFMtl::render()
+{
+}

WFMtl.hh

@@ -0,0 +1,24 @@
+
+#include <GL/gl.h>
+#include <vector>
+#include <string>
+#include <map>
+
+class WFMtl
+{
+public:
+	bool load(const std::string & filename);
+	void render();
+
+private:
+	/* methods */
+	void clear();
+	std::string trim(std::string s);
+	int filesize(const char * filename);
+	void processInputLine(const std::string & input);
+	std::string stripFirstToken(std::string & input);
+
+	/* variables */
+	std::map< std::string, std::vector< std::vector<std::string> > > m_data;
+	string m_currentMaterialName;
+};

WFObj.cc

@@ -15,6 +15,11 @@ using namespace std;
 #define WHITESPACE " \n\r\t\v"
 #define DEBUGGL
 
+void WFObj::clear()
+{
+	m_data = std::vector< std::vector<std::string> >();
+}
+
 int WFObj::filesize(const char * filename)
 {
 	struct stat st;
@@ -25,6 +30,8 @@ int WFObj::filesize(const char * filename)
 
 bool WFObj::load(const string & filename)
 {
+	clear();
+
 	int size = filesize(filename.c_str());
 	if (size < 1)
 		return false;
@@ -241,7 +248,7 @@ WFObj::Vertex WFObj::readVertex(const vector<string> & parts)
 {
 	int partslen = parts.size();
 	Vertex v;
-	for (int i = 1; i < partslen; i++)
+	for (int i = 1; i < partslen && i <= 4; i++)
 	{
 		sscanf(parts[i].c_str(), "%f", &v[i - 1]);
 	}

WFObj.hh

@@ -22,6 +22,7 @@ private:
 	};
 
 	/* methods */
+	void clear();
 	std::string trim(std::string s);
 	int filesize(const char * filename);
 	void processInputLine(const std::string & input);