rotate.cc

torch tracking code, it is a good code

const char *help = "\
progname: rotation.cc\n\
code2html: This program tests rotation.\n\
version: Torch3 vision2.0, 2005\n\
(c) Sebastien Marcel ([e-mail])\n";

#include "general.h"
#include "RotationMatrix2D.h"
#include "Affine2D.h"
#include "Vector2D.h"
#include "Rectangle2D.h"
#include "CmdLine.h"

using namespace Torch;

int main(int argc, char **argv)
{
 	int x, y, w, h;
	int xc, yc;
	real angle;
	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.addICmdArg("x", &x, "x");
  	cmd.addICmdArg("y", &y, "y");
  	cmd.addICmdArg("w", &w, "w");
  	cmd.addICmdArg("h", &h, "h");
  	cmd.addICmdArg("xc", &xc, "xc");
  	cmd.addICmdArg("yc", &yc, "yc");
  	cmd.addRCmdArg("angle", &angle, "ccw angle in degree");
  	cmd.addText("\nOptions:");
  	cmd.addBCmdOption("-verbose", &verbose, false, "verbose");

	cmd.read(argc, argv);


	//
	RotationMatrix2D rot(angle);
	print("rotation matrix (M) = %s\n", rot.sprint());
	
	//
	Vector2D v(xc, yc);
	print("center of rotation (T) = %s\n", v.sprint());

	//
	Affine2D affine(rot, v);

	//
	Rectangle2D r(x, y, w, h);
	print("rectangle (R) = %s\n", r.sprint());

	Rectangle2D r2;
	
	r2 = affine * r + v;
	print("rotated rectangle R * (M-T) + T = %s\n\n", r2.sprint());

}