// trying to write into a BMP file

int RGBpixmap:: writeBMPFile(char * fname)
{
	fstream outStream(fname, ios ::out); // open the output stream
	if (outStream.fail())
	  { cout << "cannot open new file : " << fname << endl; return 0;}

	ulong myLong = 0;
	ushort myShort = 1;

	// file header
	outStream << "BM" ;	// first 2 bytes
	outStream << myLong;	//size of file !
	outStream << myLong;	//reserved, must be zero
	outStream << myLong;	//offset from Bitmap File Header
	// bitmap info
	myLong = 40;
	outStream << myLong; 	//num.bytes in header (= 40)
	myLong =  200;		//width in pixels
	outStream << myLong;
	myLong =  200;		//height in pixels
	outStream << myLong;
	outStream << myShort;	//number of color planes (must be 1)
	myShort=24;
	outStream << myShort;	//number of bits per pixel
	myLong = 0;		//type of compression:
	outStream << myLong;	//	0=no compresion
	myLong = 200*200*3;	//size in bytes
	outStream << myLong;
	return 1;
}

// //<<<<<<<<<<<<<<<<<<<<<<<<<<<< write mesh>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// void writeMesh(char * fname)
// { // write this mesh object into a new Chapter 6 format file.
// 	if(numVerts == 0 || numNorms   == 0 || numFaces == 0) return; //empty
// 	fstream outStream(fname, ios ::out); // open the output stream
// 	if(outStream.fail()) {cout << "can't make new file: " << fname << endl; return;}
// 	outStream << numVerts << " " << numNorms << " " << numFaces << "\n";
// 	// write the vertex and vertex normal list
// 	for(int i = 0; i < numVerts; i++)
// 		outStream << pt[i].x   << " " << pt[i].y   << " " << pt[i].z << "\n";
// 	for(int ii = 0; ii < numNorms; ii++)
// 		outStream  << norm[ii].x << " " << norm[ii].y << " " << norm[ii].z << "\n";
// 	// write the face data
// 	for(int f = 0; f < numFaces; f++)
// 	{
// 		int n = face[f].nVerts;
// 		outStream << n << "\n";
// 		for(int v = 0; v < n; v++)// write vertex indices for this face
// 			outStream << face[f].vert[v].vertIndex << " ";	outStream << "\n";
// 		for(int k = 0; k < n; k++)	// write normal indices for this face 
// 			outStream << face[f].vert[k].normIndex << " "; outStream << "\n";
// 	}
// 	outStream.close();
// }