ppmdraw.cc

torch tracking code, it is a good code

const char *help = "\
progname: ppmdraw.cc\n\
code2html: This program reads a ppm image and draws on it.\n\
version: Torch3 vision2.0, 2004-2005\n\
(c) Sebastien Marcel ([e-mail])\n";

#include "ImageRgb.h"
#include "Rectangle2D.h"
#include "DiskXFile.h"
#include "CmdLine.h"

using namespace Torch;

int main(int argc, char **argv)
{
	char *image_filename;
	char *color_name;
	bool verbose;
  
	// Construct the command line
  	CmdLine cmd;
	cmd.setBOption("write log", false);
	
  	// Put the help line at the beginning
  	cmd.info(help);

  	cmd.addText("\nArguments:");
  	cmd.addSCmdArg("image filename", &image_filename, "image filename");
  	cmd.addText("\nOptions:");
  	cmd.addBCmdOption("-verbose", &verbose, false, "verbose");
  	cmd.addSCmdOption("-colorname", &color_name, "green", "color name");

	cmd.read(argc, argv);


  	DiskXFile *image_file = NULL;
	Image *image = NULL;

	image = new ImageRgb();
	image->setBOption("verbose", verbose);
	
	image_file = new DiskXFile(image_filename, "r");
	image->loadXFile(image_file);
	delete image_file;

	if(verbose)
	{
		print("Image info:\n");
		print("   width = %d\n", image->width);
		print("   height = %d\n", image->height);
		print("   format = %s (%d)\n", image->coding, image->n_planes);
	}

	if((image->width < 100) || (image->height < 100))
	{
		print("Image too small to draw in it.");

		delete image_file;
		delete image;

		return 1;
	}
	
	//
	Point2D A(10,10);
	Point2D B(100,10);
	Point2D C(100,60);
	Point2D D(10,60);

	Rectangle2D r1(A, B, C, D);
	r1.draw(image, red);

	//
	A.reset(100,60);
	B.reset(200,60);
	C.reset(200,100);
	D.reset(100,100);
	
	Rectangle2D r2(A, B, C, D);
	r2.draw(image, color_name);
	
	image_file = new DiskXFile("test.ppm", "w");
	image->saveXFile(image_file);
	delete image_file;
	delete image;

	return(0);
}