showcase9.cpp File Reference

Generates two moving circles and the tangential segments. More...

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

Include dependency graph for showcase9.cpp:

Functions
int	main (int, const char **)

Detailed Description

Generates two moving circles and the tangential segments.

Function Documentation

main()

int main	(	int	,
		const char **
	)

{
    auto nbim = 25; // nb images
    auto rad_0 = 20;
    auto x0 = 110;
    auto y0 = 90;
    auto k1=70;
    auto k2=15;
    uint8_t g = 180;
    Circle cir1( 120, 80, 25 );

    for( int i=0; i<nbim; i++ )
    {
        auto angle = i * 2. * M_PI / nbim;
        auto x1 = std::cos(angle)*k1;
        auto y1 = std::sin(angle)*k1;
        auto rad = rad_0 + std::sin(angle)*k2;

        Circle cir2( Point2d(x0+x1, y0+y1), rad );

        Image<img::SvgImage> im( 250, 220 );
        auto seg = getSegment( cir1, cir2 ); //.draw( im, DrawParams().setColor(150,150,0) );
        seg.draw( im, DrawParams().setColor(150,150,0) );

        cir1.draw( im, DrawParams().setColor(250,0,0) );
        cir2.draw( im, DrawParams().setColor(0,0,250) );

        getBB(cir1, cir2).draw( im, DrawParams().setColor(g,g,g) );

        auto lightgray = DrawParams().setColor(200,200,200);
        seg.getLine().getOrthogLine( seg.getPts().first ).draw( im,  lightgray );
        seg.getLine().getOrthogLine( seg.getPts().second ).draw( im, lightgray );

        auto segs = getTanSegs(cir1,cir2);
        draw( im, segs.first,  DrawParams().setColor(250,250,0) );
        draw( im, segs.second, DrawParams().setColor(0,250,250) );
        std::ostringstream oss;
        oss << "showcase9_" << std::setfill('0') << std::setw(2) <<i << ".svg";
        im.write( oss.str() );
    }
}

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