path-description.h

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// SPDX-License-Identifier: GPL-2.0-or-later
 * Authors: see git history
 *
 * Copyright (C) 2018 Authors
 * Released under GNU GPL v2+, read the file 'COPYING' for more information.
 */
#ifndef SEEN_INKSCAPE_LIVAROT_PATH_DESCRIPTION_H
#define SEEN_INKSCAPE_LIVAROT_PATH_DESCRIPTION_H
 
#include <2geom/point.h>
#include "svg/stringstream.h"
 
// path description commands
/* FIXME: these should be unnecessary once the refactoring of the path
** description stuff is finished.
*/
 
enum
{
  descr_moveto = 0,         
  descr_lineto = 1,         
  descr_cubicto = 2,        
  descr_arcto = 4,          
  descr_close = 5,          
  descr_forced = 7,         
  descr_type_mask = 15      
};
 
struct PathDescr
{
  PathDescr() : flags(0), associated(-1), tSt(0), tEn(1) {}
  PathDescr(int f) : flags(f), associated(-1), tSt(0), tEn(1) {}
  virtual ~PathDescr() = default;
 
  int getType() const { return flags & descr_type_mask; }
  void setType(int t) {
    flags &= ~descr_type_mask;
    flags |= t;
  }
 
    virtual void dumpSVG(Inkscape::SVGOStringStream &/*s*/, Geom::Point const &/*last*/) const {}
 
    virtual PathDescr *clone() const = 0;
 
    virtual void dump(std::ostream &/*s*/) const {}
 
    int    flags;         
    int    associated;    
    double tSt;           
    double tEn;           
};
 
struct PathDescrMoveTo : public PathDescr
{
  PathDescrMoveTo(Geom::Point const &pp)
      : PathDescr(descr_moveto), p(pp) {}
 
  void dumpSVG(Inkscape::SVGOStringStream &s, Geom::Point const &last) const override;
  PathDescr *clone() const override;
  void dump(std::ostream &s) const override;
 
  Geom::Point p; 
};
 
struct PathDescrLineTo : public PathDescr
{
  PathDescrLineTo(Geom::Point const &pp)
    : PathDescr(descr_lineto), p(pp) {}
 
  void dumpSVG(Inkscape::SVGOStringStream &s, Geom::Point const &last) const override;
  PathDescr *clone() const override;
  void dump(std::ostream &s) const override;
 
  Geom::Point p; 
};
 
struct PathDescrCubicTo : public PathDescr
{
  PathDescrCubicTo(Geom::Point const &pp, Geom::Point const &s, Geom::Point const& e)
    : PathDescr(descr_cubicto), p(pp), start(s), end(e) {}
 
  void dumpSVG(Inkscape::SVGOStringStream &s, Geom::Point const &last) const override;
  PathDescr *clone() const override;
  void dump(std::ostream &s) const override;
 
  Geom::Point p;     
  Geom::Point start; 
  Geom::Point end;   
};
 
struct PathDescrArcTo : public PathDescr
{
  PathDescrArcTo(Geom::Point const &pp, double x, double y, double a, bool l, bool c)
    : PathDescr(descr_arcto), p(pp), rx(x), ry(y), angle(a), large(l), clockwise(c) {}
 
  void dumpSVG(Inkscape::SVGOStringStream &s, Geom::Point const &last) const override;
  PathDescr *clone() const override;
  void dump(std::ostream &s) const override;
 
  Geom::Point p;   
  double rx;       
  double ry;       
  double angle;    
  bool large;      
  bool clockwise;  
};
 
struct PathDescrForced : public PathDescr
{
  PathDescrForced() : PathDescr(descr_forced), p(0, 0) {}
 
  PathDescr *clone() const override;
 
  /* FIXME: not sure whether _forced should have a point associated with it;
  ** Path::ConvertForcedToMoveTo suggests that maybe it should.
  */
  Geom::Point p; 
};
 
 
struct PathDescrClose : public PathDescr
{
  PathDescrClose() : PathDescr(descr_close) {}
 
  void dumpSVG(Inkscape::SVGOStringStream &s, Geom::Point const &last) const override;
  PathDescr *clone() const override;
 
  /* FIXME: not sure whether _forced should have a point associated with it;
  ** Path::ConvertForcedToMoveTo suggests that maybe it should.
  */
  Geom::Point p; 
};
 
#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 :