#define INKSCAPE_LPE_CIRCLE_WITH_RADIUS_CPP
/** \file
 * LPE <circle_with_radius> implementation, used as an example for a base starting class
 * when implementing new LivePathEffects.
 *
 * In vi, three global search-and-replaces will let you rename everything
 * in this and the .h file:
 *
 *   :%s/CIRCLE_WITH_RADIUS/YOURNAME/g
 *   :%s/CircleWithRadius/Yourname/g
 *   :%s/circle_with_radius/yourname/g
 */
/*
 * Authors:
 *   Johan Engelen
*
* Copyright (C) Johan Engelen 2007 <j.b.c.engelen@utwente.nl>
 *
 * Released under GNU GPL, read the file 'COPYING' for more information
 */

#include "live_effects/lpe-circle_with_radius.h"
#include "display/curve.h"
#include <libnr/n-art-bpath.h>

// You might need to include other 2geom files. You can add them here:
#include <2geom/path.h>
#include <2geom/sbasis.h>
#include <2geom/bezier-to-sbasis.h>
#include <2geom/d2.h>

using namespace Geom;

namespace Inkscape {
namespace LivePathEffect {

LPECircleWithRadius::LPECircleWithRadius(LivePathEffectObject *lpeobject) :
    Effect(lpeobject)//,
    // initialise your parameters here:
    //radius(_("Float parameter"), _("just a real number like 1.4!"), "svgname", &wr, this, 50)
{
    // register all your parameters here, so Inkscape knows which parameters this effect has:
    //registerParameter( dynamic_cast<Parameter *>(&radius) );
}

LPECircleWithRadius::~LPECircleWithRadius()
{

}

void _circle(Geom::Point center, double radius, std::vector<Geom::Path> &path_out) {
    Geom::Path pb;

    D2<SBasis> B;
    Linear bo = Linear(0, 2 * M_PI);

    B[0] = cos(bo,4);
    B[1] = sin(bo,4);

    B = B * radius + center;

    pb.append(SBasisCurve(B));

    path_out.push_back(pb);
}

std::vector<Geom::Path>
LPECircleWithRadius::doEffect_path (std::vector<Geom::Path> const & path_in)
{
    std::vector<Geom::Path> path_out = std::vector<Geom::Path>();

    Geom::Point center = path_in[0].initialPoint();
    Geom::Point pt = path_in[0].finalPoint();

    double radius = Geom::L2(pt - center);

    _circle(center, radius, path_out);

    return path_out;
}

/*

Geom::Piecewise<Geom::D2<Geom::SBasis> >
LPECircleWithRadius::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > & pwd2_in)
{
    Geom::Piecewise<Geom::D2<Geom::SBasis> > output;

    output = pwd2_in;   // spice this up to make the effect actually *do* something!

    return output;
}

*/

/* ######################## */

} //namespace LivePathEffect
} /* namespace Inkscape */

/*
  Local Variables:
  mode:c++
  c-file-style:"stroustrup"
  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
  indent-tabs-mode:nil
  fill-column:99
  End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :