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// SPDX-License-Identifier: GPL-2.0-or-later
/** @file
* @brief LPE perspective path effect implementation
*/
/* Authors:
* Maximilian Albert <maximilian.albert@gmail.com>
* Johan Engelen <j.b.c.engelen@utwente.nl>
*
* Copyright (C) 2007 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#ifndef INKSCAPE_LPE_PERSPECTIVE_PATH_H
#define INKSCAPE_LPE_PERSPECTIVE_PATH_H
#include "live_effects/effect.h"
#include "live_effects/parameter/parameter.h"
#include "live_effects/parameter/bool.h"
#include "live_effects/lpegroupbbox.h"
#include <vector>
#include "2geom/point.h"
namespace Inkscape {
namespace LivePathEffect {
namespace PP {
// we need a separate namespace to avoid clashes with other LPEs
class KnotHolderEntityOffset;
}
class LPEPerspectivePath : public Effect, GroupBBoxEffect {
public:
LPEPerspectivePath(LivePathEffectObject *lpeobject);
~LPEPerspectivePath() override;
void doBeforeEffect (SPLPEItem const* lpeitem) override;
void doOnApply(SPLPEItem const* lpeitem) override;
Geom::Piecewise<Geom::D2<Geom::SBasis> > doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in) override;
virtual void refresh(Gtk::Entry* perspective);
Gtk::Widget * newWidget() override;
/* the knotholder entity classes must be declared friends */
friend class PP::KnotHolderEntityOffset;
void addKnotHolderEntities(KnotHolder *knotholder, SPItem *item) override;
private:
// add the parameters for your effect here:
ScalarParam scalex;
ScalarParam scaley;
// TODO: rewrite this using a PointParam instead of two ScalarParams
ScalarParam offsetx;
ScalarParam offsety;
BoolParam uses_plane_xy;
// there are all kinds of parameters. Check the /live_effects/parameter directory which types exist!
Geom::Point orig;
LPEPerspectivePath(const LPEPerspectivePath&) = delete;
LPEPerspectivePath& operator=(const LPEPerspectivePath&) = delete;
std::vector<Geom::Point> handles;
double tmat[3][4];
};
} //namespace LivePathEffect
} //namespace Inkscape
#endif
/*
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:fileencoding=utf-8:textwidth=99 :
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