showcase18.cpp File Reference

Generates a parallelogram from 2 fixed point and a rotating one. More...

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

Include dependency graph for showcase18.cpp:

Functions
int	main (int, const char **)

Detailed Description

Generates a parallelogram from 2 fixed point and a rotating one.

Function Documentation

main()

int main	(	int	,
		const char **
	)

{
    auto nbim = 25; // nb images
    auto Hdraw = Homogr().setScale(30).addTranslation(10,10);

    auto x0 = 3.;
    auto y0 = 2.;
    auto k=1.8;

    Point2d p1( 1, 4 );
    Point2d p2( 3, 5 );

    for( int i=0; i<nbim; i++ )
    {
        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 p0( x1+x0, y1+y0);
        CPolyline pol1, pol2, pol3;
        pol1.setParallelogram( p1, p2, p0 );
        pol2.setParallelogram( p1, p0, p2 );
        pol3.setParallelogram( p2, p1, p0 );

        Image<img::SvgImage> im1( 250, 200 );
        (Hdraw * pol1).draw( im1, DrawParams().setPointStyle( PtStyle::Diam ).setColor( 250,25,20 ) );
        (Hdraw * pol2).draw( im1, DrawParams().setPointStyle( PtStyle::Diam ).setColor( 25,250,20 ) );
        (Hdraw * pol3).draw( im1, DrawParams().setPointStyle( PtStyle::Diam ).setColor( 25,25,250 ) );

        auto drawparams = DrawParams().setPointStyle( PtStyle::Diam ).setColor( 20,0,250 );
        (Hdraw * p0).draw(im1, drawparams );
        (Hdraw * p1).draw(im1, drawparams );
        (Hdraw * p2).draw(im1, drawparams );

        std::ostringstream ossa;
        ossa << "showcase18_" << std::setfill('0') << std::setw(2) << i << ".svg";
        im1.write( ossa.str() );
    }
}

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