showcase15.cpp File Reference

random points and a moving point, draw the nearest/farthest point segment More...

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

Include dependency graph for showcase15.cpp:

Functions
int	main (int, const char **)

Detailed Description

random points and a moving point, draw the nearest/farthest point segment

Function Documentation

main()

int main	(	int	,
		const char **
	)

{
    auto nbim = 20; // nb images

    auto cmax = 300;
    auto cmin = 20;

    int nbPts = 30;
    std::vector<Point2d> vec(nbPts);
    auto it = std::begin(vec);
    for( auto i=0; i<nbPts; i++ )
        *it++ = Point2d(
            1.0*rand() / RAND_MAX * (cmax-cmin) + cmin,
            1.0*rand() / RAND_MAX * (cmax-cmin) + cmin
    );
    auto k = 70.;
    auto x0 = 150;
    auto y0 = 150;

    for( int i=0; i<nbim; i++ )
    {
        img::Image<img::SvgImage> im( cmax+30, cmax+30 );


        draw( im, vec );

        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;
        Point2d pt( x1+x0,y1+y0);
        pt.draw( im, img::DrawParams().setColor(250,0,0).setPointStyle( img::PtStyle::Dot ) );
        auto pidx = findNearestFarthestPoint( pt, vec );
        Segment(vec[pidx.first],  pt).draw( im, img::DrawParams().setColor( 250,0,0) );
        Segment(vec[pidx.second], pt).draw( im, img::DrawParams().setColor( 0,250,0) );

        std::ostringstream oss;
        oss << "showcase15_" << std::setfill('0') << std::setw(2) << i << ".svg";
        im.write( oss.str() );
    }
}

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