showcase17.cpp File Reference

Generates a moving segment and its orthogonal segments and points. More...

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

Include dependency graph for showcase17.cpp:

Functions
int	main (int, const char **)

Detailed Description

Generates a moving segment and its orthogonal segments and points.

Function Documentation

main()

int main	(	int	,
		const char **
	)

{
    auto nbim = 30; // nb images
    auto k = 60;
    auto x1 = 120.;
    auto y1 = 120.;
    auto org_x2 = 130;
    auto org_y2 = 130;

    std::array<img::Color,4> vcol;
    vcol[0]=img::Color(0,250,125);
    vcol[1]=img::Color(0,125,250);
    vcol[2]=img::Color(125,0,250);
    vcol[3]=img::Color(250,0,125);

    auto fl = [&](int i)   // lambda
    {
        return img::DrawParams().setPointStyle(img::PtStyle::Dot).setColor( vcol[i] );
    };
    std::function<img::DrawParams(int)> style(fl);

    for( int i=0; i<nbim; i++ )
    {
        auto angle = i*360./nbim;
        auto angle_r2 = 1.0*angle * M_PI / 180.;

        auto x2 = org_x2+std::cos(angle_r2)*k;
        auto y2 = org_y2+std::sin(angle_r2)*k;
        Segment s( x1, y1, x2, y2 );

        img::Image<img::SvgImage> im( 280, 250 );
        s.draw( im, img::DrawParams().setColor(250,25,0).setThickness(2) );
        auto osegs = s.getOrthogSegs();
        auto opts = s.getOrthogPts();
        if( i<nbim/2 )
            draw( im, osegs, style );
        else
            draw( im, opts, style );

        std::ostringstream ossa;
        ossa << "showcase17_" << std::setfill('0') << std::setw(2) <<i << ".svg";
        im.write( ossa.str() );
    }
}

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