rotatepgm.cc

torch tracking code, it is a good code

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

#include "ImageGray.h"
#include "ipRotate.h"
#include "DiskXFile.h"
#include "CmdLine.h"

using namespace Torch;

int main(int argc, char **argv)
{
	char *image_filename;
	bool verbose;
	real angle;
	int xc;
	int yc;
  
	
  	CmdLine cmd;
	cmd.setBOption("write log", false);
  	cmd.info(help);
  	cmd.addText("\nArguments:");
  	cmd.addSCmdArg("image filename", &image_filename, "image filename");
  	cmd.addText("\nOptions:");
  	cmd.addBCmdOption("-verbose", &verbose, false, "verbose");
  	cmd.addRCmdOption("-angle", &angle, 0.0, "ccw angle in degree");
  	cmd.addICmdOption("-xc", &xc, -1, "center X of rotation (if -1 center of the image)");
  	cmd.addICmdOption("-yc", &yc, -1, "center Y of rotation (if -1 center of the image)");

	cmd.read(argc, argv);


	Image *image_in = NULL;
	Image *image_out = NULL;

	image_in = new ImageGray();
	image_in->setBOption("verbose", verbose);
	
	image_in->load(image_filename);

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

	if(xc == -1) xc = FixI(image_in->width/2.0);
	if(yc == -1) yc = FixI(image_in->height/2.0);

	ipRotate *imachine = NULL;
	imachine = new ipRotate(angle, image_in->width, image_in->height, "gray");
	imachine->setBOption("verbose", verbose);
	imachine->setCenter(xc, yc);
	imachine->process(image_in);
	
	image_out = new ImageGray();
	image_out->setBOption("verbose", verbose);

	image_out->copyFrom(imachine->getWidthOut(), imachine->getHeightOut(), imachine->seq_out->frames[0], "gray");
	image_out->save("rotate.pgm");
	
	delete imachine;
	delete image_out;
	delete image_in;

	return(0);
}