added ply binary export (boolean in function call)

Apps/Examples/viewer.cpp

@@ -234,7 +234,7 @@ void Viewer::exportMesh(std::string& filename)
 	if (extension == std::string(".off"))
 		Algo::Export::exportOFF<PFP>(myMap, position, filename.c_str(), allDarts) ;
 	else if (extension.compare(0, 4, std::string(".ply")) == 0)
-		Algo::Export::exportPLY<PFP>(myMap, position, filename.c_str(), allDarts) ;
+		Algo::Export::exportPLY<PFP>(myMap, position, filename.c_str(), true, allDarts) ;
 	else if (extension == std::string(".map"))
 		myMap.saveMapBin(filename) ;
 	else

include/Algo/Export/export.h

@@ -43,7 +43,7 @@ namespace Export
 * @return true
 */
 template <typename PFP>
-bool exportPLY(typename PFP::MAP& map, const typename PFP::TVEC3& position, const char* filename, const FunctorSelect& good = allDarts) ;
+bool exportPLY(typename PFP::MAP& map, const typename PFP::TVEC3& position, const char* filename, const bool binary, const FunctorSelect& good = allDarts) ;
 
 /**
 * export the map into a OFF file

include/Algo/Export/export.hpp

@@ -38,12 +38,16 @@ namespace Export
 {
 
 template <typename PFP>
-bool exportPLY(typename PFP::MAP& map, const typename PFP::TVEC3& position, const char* filename, const FunctorSelect& good)
+bool exportPLY(typename PFP::MAP& map, const typename PFP::TVEC3& position, const char* filename, bool binary, const FunctorSelect& good)
 {
 	typedef typename PFP::MAP MAP;
 	typedef typename PFP::VEC3 VEC3;
 	
-	std::ofstream out(filename, std::ios::out) ;
+	std::ofstream out ;
+	//if (!binary)
+		out.open(filename, std::ios::out) ;
+	//else
+		//out.open(filename, std::ios::out | std::ios::binary) ;
 	if (!out.good())
 	{
 		CGoGNerr << "Unable to open file " << CGoGNendl ;
@@ -85,30 +89,73 @@ bool exportPLY(typename PFP::MAP& map, const typename PFP::TVEC3& position, cons
 	}
 
 	out << "ply" << std::endl ;
-	out << "format ascii 1.0" << std::endl ;
-	out << "comment no comment" << std::endl ;
+
+	if (!binary)
+		out << "format ascii 1.0" << std::endl ;
+	else
+	{	// test endianness
+		union
+		{
+		    uint32_t i ;
+		    char c[4] ;
+		} bint = {0x01020304} ;
+		if (bint.c[0] == 1) // big endian
+			out << "format binary_big_endian 1.0" << std::endl ;
+		else
+			out << "format binary_little_endian 1.0" << std::endl ;
+	}
+
+	out << "comment File generated by the CGoGN library" << std::endl ;
+	out << "comment See : http://cgogn.unistra.fr/" << std::endl ;
+	out << "comment Or contact : cgogn@unistra.fr" << std::endl ;
 	out << "element vertex " << vertices.size() << std::endl ;
-	out << "property float x" << std::endl ;
-	out << "property float y" << std::endl ;
-	out << "property float z" << std::endl ;
+	if (position.isValid())
+	{
+		out << "property float32 x" << std::endl ;
+		out << "property float32 y" << std::endl ;
+		out << "property float32 z" << std::endl ;
+	}
+
 	out << "element face " << facesSize.size() << std::endl ;
-	out << "property list uchar int vertex_indices" << std::endl ;
+	out << "property list uint8 uint32 vertex_indices" << std::endl ;
 	out << "end_header" << std::endl ;
 
-	for(unsigned int i = 0; i < vertices.size(); ++i)
+	if (!binary)
 	{
-		const VEC3& v = position[vertices[i]] ;
-		out << v[0] << " " << v[1] << " " << v[2] << std::endl ;
+		for(unsigned int i = 0; i < vertices.size(); ++i)
+			out << position[vertices[i]] << std::endl ;
+
+		for(unsigned int i = 0; i < facesSize.size(); ++i)
+		{
+			out << facesSize[i] ;
+			for(unsigned int j = 0; j < facesIdx[i].size(); ++j)
+				out << " " << facesIdx[i][j] ;
+			out << std::endl ;
+		}
 	}
-	for(unsigned int i = 0; i < facesSize.size(); ++i)
+	else
 	{
-		out << facesSize[i] ;
-		for(unsigned int j = 0; j < facesIdx[i].size(); ++j)
-			out << " " << facesIdx[i][j] ;
-		out << std::endl ;
+		for(unsigned int i = 0; i < vertices.size(); ++i)
+		{
+			Geom::Vec3f v = position[vertices[i]] ;
+			for (unsigned int c = 0 ; c < 3 ; ++c)
+			{
+				const float& floatofdouble = v[c] ;
+				out.write((char*)(&floatofdouble), sizeof(float)) ;
+			}
+		}
+
+		for(unsigned int i = 0; i < facesSize.size(); ++i)
+		{
+			unsigned char nbe = facesSize[i] ;
+			out.write((char*)(&nbe), sizeof(unsigned char)) ;
+			for(unsigned int j = 0 ; j < facesIdx[i].size() ; ++j)
+				out.write((char*)(&(facesIdx[i][j])), sizeof(unsigned int)) ;
+		}
 	}
 
 	out.close() ;
+
 	return true ;
 }