1 #define INKSCAPE_LPE_RULER_CPP
3 /** \file
4 * LPE <ruler> implementation, see lpe-ruler.cpp.
5 */
7 /*
8 * Authors:
9 * Maximilian Albert
10 * Johan Engelen
11 *
12 * Copyright (C) Maximilian Albert 2008 <maximilian.albert@gmail.com>
13 *
14 * Released under GNU GPL, read the file 'COPYING' for more information
15 */
17 #include "live_effects/lpe-ruler.h"
18 #include <2geom/piecewise.h>
20 namespace Inkscape {
21 namespace LivePathEffect {
23 LPERuler::LPERuler(LivePathEffectObject *lpeobject) :
24 Effect(lpeobject),
25 mark_distance(_("Mark distance"), _("Distance between ruler marks"), "mark_distance", &wr, this, 50),
26 mark_length(_("Mark length"), _("Length of ruler marks"), "mark_length", &wr, this, 10)
27 {
28 registerParameter(dynamic_cast<Parameter *>(&mark_distance));
29 registerParameter(dynamic_cast<Parameter *>(&mark_length));
31 mark_distance.param_make_integer();
32 mark_length.param_make_integer();
33 }
35 LPERuler::~LPERuler()
36 {
38 }
40 Geom::Piecewise<Geom::D2<Geom::SBasis> >
41 LPERuler::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in)
42 {
43 using namespace Geom;
45 Point A(pwd2_in.firstValue());
46 Point B(pwd2_in.lastValue());
48 Piecewise<D2<SBasis> >output(D2<SBasis>(Linear(A[X], B[X]), Linear(A[Y], B[Y])));
50 Point dir(unit_vector(B - A));
51 Point n(-rot90(dir) * mark_length);
52 double length = L2(B - A);
54 g_print ("Distance: %8.2f\n", length);
56 Point C, D;
57 for (int i = 0; i < length; i += static_cast<int>(mark_distance)) {
58 C = A + dir * i;
59 D = C + n;
60 Piecewise<D2<SBasis> > seg(D2<SBasis>(Linear(C[X], D[X]), Linear(C[Y], D[Y])));
61 output.concat(seg);
62 }
64 return output;
65 }
67 /* ######################## */
69 } //namespace LivePathEffect
70 } /* namespace Inkscape */
72 /*
73 Local Variables:
74 mode:c++
75 c-file-style:"stroustrup"
76 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
77 indent-tabs-mode:nil
78 fill-column:99
79 End:
80 */
81 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :