showcase5.cpp File Reference

Generates moving ellipse and bounding boxes. More...

#include "../../homog2d.hpp"

Include dependency graph for showcase5.cpp:

Functions
int	main (int, const char **)

Detailed Description

Generates moving ellipse and bounding boxes.

Function Documentation

main()

int main	(	int	,
		const char **
	)

{
    auto nbim = 30; // nb images
    auto Hdraw = Homogr().setScale(20).addTranslation(10,20);

    auto kx=2.5;
    auto ky=0.9;
    auto x0 = 4.8;
    auto y0 = 3.5;

    for( int i=0; i<nbim; i++ )
    {
        auto angle = i*360./nbim;
        auto angle_r = angle * M_PI / 180.;


        auto x1 = x0+std::cos(angle_r)*kx;
        auto y1 = y0+std::sin(angle_r)*ky;
        auto ell = Ellipse( x1, y1, 2.5, 1., angle_r ) ;

//      std::cout << i << ": angle=" << angle << " ell=" << ell << "\n";

        auto ell2 = Hdraw * ell;

        img::Image<img::SvgImage> im( 250, 200 );
        ell2.getCenter().draw( im, img::DrawParams().setColor(0,250,0) );
        auto lines = ell2.getAxisLines();
        lines.first.draw( im );
        lines.second.draw( im );

        getBB(ell2).draw(  im, img::DrawParams().setColor(0,250,0) );
        getOBB(ell2).draw( im, img::DrawParams().setColor(0,0,250) );
        ell2.draw( im, img::DrawParams().setColor(250,0,0) );
        std::ostringstream ossa;
        ossa << "showcase5_" << std::setfill('0') << std::setw(2) <<i << ".svg";
        im.write( ossa.str() );
    }
}

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