1 #ifndef INKSCAPE_LPE_PERP_BISECTOR_H
2 #define INKSCAPE_LPE_PERP_BISECTOR_H
4 /** \file
5 * LPE <perp_bisector> implementation, see lpe-perp_bisector.cpp.
6 */
7 /*
8 * Authors:
9 * Maximilian Albert
10 * Johan Engelen
11 *
12 * Copyright (C) Johan Engelen 2007 <j.b.c.engelen@utwente.nl>
13 * Copyright (C) Maximilin Albert 2008 <maximilian.albert@gmail.com>
14 *
15 * Released under GNU GPL, read the file 'COPYING' for more information
16 */
18 #include "live_effects/effect.h"
19 #include "live_effects/parameter/parameter.h"
20 #include "live_effects/parameter/point.h"
22 namespace Inkscape {
23 namespace LivePathEffect {
25 class LPEPerpBisector : public Effect {
26 public:
27 LPEPerpBisector(LivePathEffectObject *lpeobject);
28 virtual ~LPEPerpBisector();
30 virtual EffectType effectType () { return PERP_BISECTOR; }
32 void doOnApply (SPLPEItem *lpeitem);
34 virtual Geom::Piecewise<Geom::D2<Geom::SBasis> >
35 doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in);
37 /* the knotholder functions below must be declared friends */
38 friend NR::Point bisector_left_end_get(SPItem *item);
39 friend NR::Point bisector_right_end_get(SPItem *item);
40 friend NR::Point path_start_get(SPItem *item);
41 friend NR::Point path_end_get(SPItem *item);
42 friend void bisector_end_set(SPItem *item, NR::Point const &p, bool left = true);
43 friend void path_set_start_end(SPItem *item, NR::Point const &p, bool start = true);
45 private:
46 ScalarParam length_left;
47 ScalarParam length_right;
49 Geom::Point A; // start of path
50 Geom::Point B; // end of path
51 Geom::Point M; // midpoint
52 Geom::Point C; // left end of bisector
53 Geom::Point D; // right end of bisector
54 Geom::Point perp_dir;
56 LPEPerpBisector(const LPEPerpBisector&);
57 LPEPerpBisector& operator=(const LPEPerpBisector&);
58 };
60 } //namespace LivePathEffect
61 } //namespace Inkscape
63 #endif