www.pudn.com > Ray_Tracing_Materials.rar > TgaImage.cpp, change:2005-03-02,size:1610b

/* 
   Class Name: 
 
      TgaImage. 
 
   Created by: 
 
      Allen Sherrod (Programming Ace of www.UltimateGameProgramming.com). 
 
   Description: 
 
      This function can save a tga image. 
*/ 
 
 
#include"TgaImage.h" 
 
 
bool WriteTGA(char *file, int width, int height, unsigned char *outImage) 
{ 
   FILE *pFile = 0; 
   unsigned char tgaHeader[12] = {0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0}; 
   unsigned char header[6]; 
   unsigned char bits = 0; 
   int colorMode = 0; 
   unsigned char tempColors = 0; 
 
   // Open file for output. 
   pFile = fopen(file, "wb"); 
 
   // Check if the file opened or not. 
   if(!pFile) { fclose(pFile); return false; } 
 
   // Set the color mode, and the bit depth. 
   colorMode = 3; 
   bits = 24; 
 
 	header[0] = width % 256; header[1] = width / 256; header[2] = height % 256;
	header[3] = height / 256; header[4] = bits; header[5] = 0; 
 
   char uselessChar = 0;    
   fwrite(tgaHeader, sizeof(tgaHeader), 1, pFile); 
   fwrite(header, sizeof(header), 1, pFile); 
 
   // Now switch image from RGB to BGR. 
   for(int index = 0; index < width * height * colorMode; index += colorMode) 
      { 
         tempColors = outImage[index]; 
         outImage[index] = outImage[index + 2]; 
         outImage[index + 2] = tempColors; 
      } 
 
   // Finally write the image. 
   fwrite(outImage, width * height * colorMode, 1, pFile); 
 
   // close the file. 
   fclose(pFile); 
 
   return true; 
} 
 
 
// Copyright February 2005 
// All Rights Reserved! 
// Allen Sherrod 
// ProgrammingAce@UltimateGameProgramming.com 
// www.UltimateGameProgramming.com