lpe-perspective-envelope.h

Go to the documentation of this file.

// SPDX-License-Identifier: GPL-2.0-or-later
#ifndef INKSCAPE_LPE_PERSPECTIVE_ENVELOPE_H
#define INKSCAPE_LPE_PERSPECTIVE_ENVELOPE_H
 
/*
 * Authors:
 *   Jabiertxof Code migration from python extensions envelope and perspective
 *   Aaron Spike, aaron@ekips.org from envelope and perspective python code
 *   Dmitry Platonov, shadowjack@mail.ru, 2006 perspective approach & math
 *   Jose Hevia (freon) Transform algorithm from envelope
 *
 * Copyright (C) 2007-2014 Authors
 *
 * Released under GNU GPL v2+, read the file 'COPYING' for more information.
 */
 
#include "live_effects/parameter/enum.h"
#include "live_effects/effect.h"
#include "live_effects/parameter/point.h"
#include "live_effects/lpegroupbbox.h"
 
namespace Inkscape {
namespace LivePathEffect {
 
class LPEPerspectiveEnvelope : public Effect, GroupBBoxEffect {
public:
 
    LPEPerspectiveEnvelope(LivePathEffectObject *lpeobject);
 
    ~LPEPerspectiveEnvelope() override;
 
    void doEffect(Geom::PathVector &curve) override;
 
    virtual Geom::Point projectPoint(Geom::Point p);
 
    void transform_multiply(Geom::Affine const &postmul, bool set) override;
 
    virtual Geom::Point projectPoint(Geom::Point p,  double m[][3]);
 
    virtual Geom::Point pointAtRatio(Geom::Coord ratio,Geom::Point A, Geom::Point B);
 
    void resetDefaults(SPItem const* item) override;
 
    virtual void vertical(PointParam &paramA,PointParam &paramB, Geom::Line vert);
 
    virtual void horizontal(PointParam &paramA,PointParam &paramB,Geom::Line horiz);
 
    void doBeforeEffect(SPLPEItem const* lpeitem) override;
 
    Gtk::Widget * newWidget() override;
 
    virtual void setDefaults();
 
    virtual void resetGrid();
 
protected:
    void addCanvasIndicators(SPLPEItem const */*lpeitem*/, std::vector<Geom::PathVector> &hp_vec) override;
private:
 
    BoolParam horizontal_mirror;
    BoolParam vertical_mirror;
    BoolParam overflow_perspective;
    EnumParam<unsigned> deform_type;
    PointParam up_left_point;
    PointParam up_right_point;
    PointParam down_left_point;
    PointParam down_right_point;
    std::vector<Geom::Point> handles;
    LPEPerspectiveEnvelope(const LPEPerspectiveEnvelope&) = delete;
    LPEPerspectiveEnvelope& operator=(const LPEPerspectiveEnvelope&) = delete;
};
 
} //namespace LivePathEffect
} //namespace Inkscape
 
#endif