showcase12.cpp File Reference

demo of full steps rotating of a Polyline (2022-11-06: WIP !!) More...

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

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Functions
int	main (int, const char **)
void	processRot (CPolyline &pl, std::string msg, Rotate rot, int nb_img, int pt_idx)

Variables
img::Image< img::SvgImage >	im (300, 400)

Detailed Description

demo of full steps rotating of a Polyline (2022-11-06: WIP !!)

Function Documentation

main()

int main	(	int	,
		const char **
	)

{
    CPolyline pl;
    std::vector<Point2d> vpts{
        { 5,5 },
        { 7,3 },
        { 6,  2 },
        { 7.5, 1. },
        { 4, 0 },
        { 5.5, 2.5 },
        { 4., 1.2 },
        { 3., 2.2 },
        { 3.6, 4.1 },
        { 1.6, 5.4 }
    };
    pl.set( vpts );

    auto Hdraw = Homogr().setScale(30).addTranslation(10,30);

    int nbpts = 3;
    auto pl2 = Hdraw * pl;
    processRot( pl2, "VMirror",    Rotate::VMirror, nbpts, 0 );
    processRot( pl2, "HMirror",    Rotate::HMirror, nbpts, 0 );
    processRot( pl2, "ClockWise",  Rotate::CW,      5, 0 );
    processRot( pl2, "CClockWise", Rotate::CCW,     5, 0 );
    processRot( pl2, "Full",       Rotate::Full,    nbpts, 0 );
}

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processRot()

void processRot	(	CPolyline &	pl,
		std::string	msg,
		Rotate	rot,
		int	nb_img,
		int	pt_idx
	)

Parameters

pl	Polyline
rot	What kind of rotation?
nb_img	How many images
pt_idx	index of Polyline point that will be the center point

{
    static int out_idx;
    for( int i=0; i<nb_img; i++ )
    {
        im.clear();
#if 0
        cv::putText(
            im.getReal(),
            std::to_string(out_idx) + ": " + msg + ": " + std::to_string(i+1) + "/" + std::to_string(nb_img),
            cv::Point2i( 20, 40 ), 0, 0.6, cv::Scalar( 50,0,0 ), 1
        );
#else
        drawText( im, std::to_string(out_idx) + ": " + msg + ": " + std::to_string(i+1) + "/" + std::to_string(nb_img), Point2d(20,40) );
#endif
        pl.rotate( rot, pl.getPoint(pt_idx) );
        pl.getPoint(0).draw( im, img::DrawParams().setColor(250,120,20).setPointStyle(img::PtStyle::Diam) );
        draw( im, Line2d( LineDir::H, pl.getPoint(0) ), img::DrawParams().setColor(200,200,200) );
        draw( im, Line2d( LineDir::V, pl.getPoint(0) ), img::DrawParams().setColor(200,200,200) );
        pl.draw( im, img::DrawParams().setColor(250,0,20) );
//      pl.getBB().draw( im, img::DrawParams().setColor(150,150,120) );

        std::ostringstream oss;
        oss << "showcase12_" << std::setfill('0') << std::setw(2) << out_idx++ << ".svg";
        im.write( oss.str() );
    }
}

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Variable Documentation

im

img::Image<img::SvgImage> im(300, 400)