showcase2b.cpp File Reference

Generates area of union of two rectangles. More...

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

Include dependency graph for showcase2b.cpp:

Functions
int	main (int, const char **)

Detailed Description

Generates area of union of two rectangles.

Function Documentation

main()

int main	(	int	,
		const char **
	)

{
    int n=30;
    auto im_w = 350;
    auto im_h = 180;
    img::Image<img::SvgImage> imgb( im_w, im_h );

    FRect r1(40,30, 130,90 );
    FRect r2(160,45, 210,150 );

    auto color_red = DrawParams().setColor(200,20,20);
    auto color_green = DrawParams().setColor(20,220,20);
    int mul = 1;
    for( int i=0; i<n; i++ )
    {
        imgb.clear();
        getBB(r1,r2).draw( imgb, DrawParams().setColor(200,200,200) );

        r1.draw( imgb, color_green );
        r2.draw( imgb, color_green );

#if 0                                  // either way is the same
        auto b = r1.unionArea(r2);
#else
        auto b = r1|r2;
#endif

        b.draw( imgb, color_red );
        imgb.drawText( "IoU=" + std::to_string( IoU(r1,r2) ), Point2d (20,20) );

        if( (i+1)%10 == 0 )
        {
            mul = mul*-1;
            r1.translate(0,30);
        }

        std::ostringstream ossb;
        ossb << "showcase2b_" << std::setfill('0') << std::setw(2) <<i << ".svg";
        imgb.write( ossb.str() );

        r1.translate( mul*20,0);
    }

}

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