showcase13.cpp File Reference

Generates random points, the Convex Hull, the Bounding Box, the Minimum Enclosing Circle (MEC), and the extremum points. More...

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

Include dependency graph for showcase13.cpp:

Functions
int	main (int, const char **)

Detailed Description

Generates random points, the Convex Hull, the Bounding Box, the Minimum Enclosing Circle (MEC), and the extremum points.

Function Documentation

main()

int main	(	int	,
		const char **
	)

{
    auto nbim = 20; // nb images

    auto cmax = 250;
    auto cmin = 50;
    auto nbpts_max = 50;
    auto nbpts_min = 5;

    auto extr_col = img::DrawParams().setColor(100,250,0).setPointStyle( img::PtStyle::Dot );
    for( int i=0; i<nbim; i++ )
    {
        img::Image<img::SvgImage> im( cmax+30, cmax+30 );
        int nbpts = 1.0*rand() / RAND_MAX * (nbpts_max-nbpts_min) + nbpts_min;
        std::vector<Point2d> vec(nbpts);
        auto it = std::begin(vec);
        for( auto j=0; j<nbpts; j++ )
            *it++ = Point2d(
                1.0*rand() / RAND_MAX * (cmax-cmin) + cmin,
                1.0*rand() / RAND_MAX * (cmax-cmin) + cmin
        );
        auto ch = convexHull( vec );
        draw( im, vec );
        ch.draw( im, img::DrawParams().setColor(250,100,100) );
        getBB(vec).draw( im, img::DrawParams().setColor(100,100,250) );

        Circle cir;
        cir.set( vec ); // Minimum Enclosing Circle (MEC)
        cir.draw( im, img::DrawParams().setColor(0,100,150) );

        getTmPoint(vec).first.draw( im, extr_col );
        getRmPoint(vec).first.draw( im, extr_col );
        getLmPoint(vec).first.draw( im, extr_col );
        getBmPoint(vec).first.draw( im, extr_col );

        std::ostringstream oss;
        oss << "showcase13_" << std::setfill('0') << std::setw(2) << i << ".svg";
        im.write( oss.str() );
    }
}

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