showcase4b.cpp File Reference

Generates rotating rectangle and its bounding circle. More...

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

Include dependency graph for showcase4b.cpp:

Functions
int	main (int, const char **)

Detailed Description

Generates rotating rectangle and its bounding circle.

Function Documentation

main()

int main	(	int	,
		const char **
	)

{
    auto nbim = 25; // nb images
    auto Hdraw = Homogr().setScale(30).addTranslation(10,10);

    auto r_w0 = 2;
    auto r_h0 = 1;
    auto x0 = 3.;
    auto k=1.8;

    for( int i=0; i<nbim; i++ )
    {
        auto angle = i*360./nbim;
        auto angle_r = angle * M_PI / 180.;
        auto x1 = std::cos(angle_r)*k;
        auto y1 = std::sin(angle_r)*k;
        auto r_w = r_w0 + std::sin( 2.*M_PI*i/nbim );

        FRect rect( Point2d( x1+x0, y1+x0), r_w, r_h0 );

        auto cir_b = rect.getBoundingCircle();
        auto cir_i = rect.getInscribedCircle();

        img::Image<img::SvgImage> imb( 250, 200 );

        (Hdraw * cir_b).draw( imb, img::DrawParams().setColor(50,250,50)  );
        (Hdraw * cir_i).draw( imb, img::DrawParams().setColor(50,25,250)  );
        (Hdraw * rect).draw( imb,  img::DrawParams().setColor(250,25,25)  );

        std::ostringstream ossb;
        ossb << "showcase4b_" << std::setfill('0') << std::setw(2) <<i << ".svg";
        imb.write( ossb.str() );
    }
}

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