lpe-bendpath.h

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// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef INKSCAPE_LPE_BENDPATH_H
#define INKSCAPE_LPE_BENDPATH_H
 
/*
 * Inkscape::LPEPathAlongPath
 *
 * Copyright (C) Johan Engelen 2007 <j.b.c.engelen@utwente.nl>
 * Copyright (C) Steren Giannini 2008 <steren.giannini@gmail.com>
 *
 * Released under GNU GPL v2+, read the file 'COPYING' for more information.
 */
 
#include "live_effects/effect.h"
#include "live_effects/parameter/bool.h"
#include "live_effects/parameter/enum.h"
#include "live_effects/parameter/path.h"
 
#include <2geom/sbasis.h>
#include <2geom/sbasis-geometric.h>
#include <2geom/bezier-to-sbasis.h>
#include <2geom/sbasis-to-bezier.h>
#include <2geom/d2.h>
#include <2geom/piecewise.h>
 
#include "live_effects/lpegroupbbox.h"
 
namespace Inkscape {
namespace UI {
namespace Toolbar {
class PencilToolbar;
}
} // namespace UI
namespace LivePathEffect {
 
namespace BeP {
class KnotHolderEntityWidthBendPath;
}
 
//for Bend path on group : we need information concerning the group Bounding box
class LPEBendPath : public Effect, GroupBBoxEffect {
public:
    LPEBendPath(LivePathEffectObject *lpeobject);
    ~LPEBendPath() override;
 
    void doBeforeEffect (SPLPEItem const* lpeitem) override;
    bool doOnOpen(SPLPEItem const *lpeitem) override;
    Geom::Piecewise<Geom::D2<Geom::SBasis> > doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in) override;
    void resetDefaults(SPItem const* item) override;
    void transform_multiply(Geom::Affine const &postmul, bool set) override;
    void addCanvasIndicators(SPLPEItem const */*lpeitem*/, std::vector<Geom::PathVector> &hp_vec) override;
    void addKnotHolderEntities(KnotHolder * knotholder, SPItem * item) override;
 
    PathParam bend_path;
 
    friend class BeP::KnotHolderEntityWidthBendPath;
    friend class Inkscape::UI::Toolbar::PencilToolbar;
 
protected:
    double original_height;
    ScalarParam prop_scale;
private:
    BoolParam scale_y_rel;
    BoolParam vertical_pattern;
    BoolParam hide_knot;
    KnotHolder * _knotholder;
    Geom::PathVector helper_path;
    Geom::Piecewise<Geom::D2<Geom::SBasis> > uskeleton;
    Geom::Piecewise<Geom::D2<Geom::SBasis> > n;
 
    void on_pattern_pasted();
 
    LPEBendPath(const LPEBendPath&) = delete;
    LPEBendPath& operator=(const LPEBendPath&) = delete;
};
 
}; //namespace LivePathEffect
}; //namespace Inkscape
 
#endif