www.pudn.com > colortracker.rar > MPColorTrackerImage.cpp

/* 
 *  ffimage.cpp 
 *   
 * 
 *  Created by Ian Fasel on Mon Nov 18 2002. 
 *  Copyright (c) 2002 __MyCompanyName__. All rights reserved. 
 * 
 */ 
 
#include "ffimage.h" 
#include "mpisearch.h" 
 
// Ideally, we'd have a subclass derived from ostream.... 
// In the meantime, we have this thingy 
static void debug_message(const char* message){ 
#ifdef DEBUG_FFIMAGE 
  cout << message << endl; 
#endif 
} 
 
// A fast RGBTRIPLE to MPISEARCH_PIXEL_TYPE converting copy constructor 
FFImage::FFImage(const FFImage &source){ 
  debug_message( "FFImage::FFImage(): Converting from RGBTRIPLE to MPISEARCH_PIXEL_TYPE" ); 
  MPISEARCH_PIXEL_TYPE one_over_255 = 1.0f/255.0f; 
  setSize(source.width,source.height,FALSE); 
  int numpixels = width*height; 
  char message[256]; 
  sprintf(message,"FFImage::FFImage(): Source image %d", source.isFlipped()); 
  debug_message( message ); 
  MPISEARCH_PIXEL_TYPE *dest_ptr = array; 
  RGBTRIPLE *source_ptr = source.array; 
  if(!source.isFlipped()){ 
	for(int i = 0; i < numpixels; i++){ 
	  *(dest_ptr++) = static_cast((source_ptr->rgbtBlue*.11f 
													  + source_ptr->rgbtGreen*.59f 
													  + source_ptr->rgbtRed*.3f)*one_over_255); 
	  source_ptr++; 
	} 
  } else{ 
	RGBTRIPLE *temp; 
	for (int y=height-1; y >= 0; y--) { 
	  temp = source_ptr + y * width; 
	  for (int x = 0; x < width; x++, temp++) { 
		*(dest_ptr++)  = static_cast(( temp->rgbtBlue*.11f + 
													    temp->rgbtGreen*.59f + 
													    temp->rgbtRed*.3f )*one_over_255); 
	  } 
	} 
  } 
 
  //m_flipped = FALSE;  // since we un-flipped it here, the resulting image is not flipped! 
}