Adding upstream version 1.0.2.upstream/1.0.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 559 insertions, 0 deletions

diff --git a/src/live_effects/lpe-roughen.cpp b/src/live_effects/lpe-roughen.cpp
new file mode 100644
index 0000000..0a48d00
--- /dev/null
+++ b/src/live_effects/lpe-roughen.cpp
@@ -0,0 +1,559 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * @file
+ * Roughen LPE implementation. Creates roughen paths.
+ */
+/* Authors:
+ *   Jabier Arraiza Cenoz <jabier.arraiza@marker.es>
+ *
+ * Thanks to all people involved specially to Josh Andler for the idea and to the
+ * original extensions authors.
+ *
+ * Copyright (C) 2014 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "live_effects/lpe-roughen.h"
+#include "display/curve.h"
+#include "helper/geom.h"
+#include <boost/functional/hash.hpp>
+#include <gtkmm.h>
+
+// TODO due to internal breakage in glibmm headers, this must be last:
+#include <glibmm/i18n.h>
+
+namespace Inkscape {
+namespace LivePathEffect {
+
+static const Util::EnumData<DivisionMethod> DivisionMethodData[DM_END] = { { DM_SEGMENTS, N_("By number of segments"), "segments" }, 
+                                                                           { DM_SIZE, N_("By max. segment size"), "size" } };
+static const Util::EnumDataConverter<DivisionMethod> DMConverter(DivisionMethodData, DM_END);
+
+static const Util::EnumData<HandlesMethod> HandlesMethodData[HM_END] = { { HM_ALONG_NODES, N_("Along nodes"), "along" },
+                                                                         { HM_RAND, N_("Rand"), "rand" },
+                                                                         { HM_RETRACT, N_("Retract"), "retract" },
+                                                                         { HM_SMOOTH, N_("Smooth"), "smooth" } };
+static const Util::EnumDataConverter<HandlesMethod> HMConverter(HandlesMethodData, HM_END);
+
+LPERoughen::LPERoughen(LivePathEffectObject *lpeobject)
+    : Effect(lpeobject)
+    , method(_("Method"), _("Division method"), "method", DMConverter, &wr, this, DM_SIZE)
+    , max_segment_size(_("Max. segment size"), _("Max. segment size"), "max_segment_size", &wr, this, 10)
+    , segments(_("Number of segments"), _("Number of segments"), "segments", &wr, this, 2)
+    , displace_x(_("Max. displacement in X"), _("Max. displacement in X"), "displace_x", &wr, this, 10.)
+    , displace_y(_("Max. displacement in Y"), _("Max. displacement in Y"), "displace_y", &wr, this, 10.)
+    , global_randomize(_("Global randomize"), _("Global randomize"), "global_randomize", &wr, this, 1.)
+    , handles(_("Handles"), _("Handles options"), "handles", HMConverter, &wr, this, HM_ALONG_NODES)
+    , shift_nodes(_("Shift nodes"), _("Shift nodes"), "shift_nodes", &wr, this, true)
+    , fixed_displacement(_("Fixed displacement"), _("Fixed displacement, 1/3 of segment length"), "fixed_displacement",
+                         &wr, this, false)
+    , spray_tool_friendly(_("Spray Tool friendly"), _("For use with spray tool in copy mode"), "spray_tool_friendly",
+                          &wr, this, false)
+{
+    registerParameter(&method);
+    registerParameter(&max_segment_size);
+    registerParameter(&segments);
+    registerParameter(&displace_x);
+    registerParameter(&displace_y);
+    registerParameter(&global_randomize);
+    registerParameter(&handles);
+    registerParameter(&shift_nodes);
+    registerParameter(&fixed_displacement);
+    registerParameter(&spray_tool_friendly);
+    displace_x.param_set_range(0., Geom::infinity());
+    displace_y.param_set_range(0., Geom::infinity());
+    global_randomize.param_set_range(0., Geom::infinity());
+    max_segment_size.param_set_range(0., Geom::infinity());
+    max_segment_size.param_set_increments(1, 1);
+    max_segment_size.param_set_digits(3);
+    segments.param_set_range(1, Geom::infinity());
+    segments.param_set_increments(1, 1);
+    segments.param_set_digits(0);
+    seed = 0;
+    apply_to_clippath_and_mask = true;
+}
+
+LPERoughen::~LPERoughen() = default;
+
+void LPERoughen::doOnApply(SPLPEItem const *lpeitem)
+{
+    Geom::OptRect bbox = lpeitem->bounds(SPItem::GEOMETRIC_BBOX);
+    if (bbox) {
+        std::vector<Parameter *>::iterator it = param_vector.begin();
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        while (it != param_vector.end()) {
+            Parameter *param = *it;
+            const gchar *key = param->param_key.c_str();
+            Glib::ustring pref_path = (Glib::ustring) "/live_effects/" +
+                                      (Glib::ustring)LPETypeConverter.get_key(effectType()).c_str() +
+                                      (Glib::ustring) "/" + (Glib::ustring)key;
+
+
+            bool valid = prefs->getEntry(pref_path).isValid();
+            Glib::ustring displace_x_str = Glib::ustring::format((*bbox).width() / 100.0);
+            Glib::ustring displace_y_str = Glib::ustring::format((*bbox).height() / 100.0);
+            Glib::ustring max_segment_size_str = Glib::ustring::format(std::min((*bbox).height(), (*bbox).width()) / 100.0);
+            if (!valid) {
+                if (strcmp(key, "method") == 0) {
+                    param->param_readSVGValue("size");
+                } else if (strcmp(key, "max_segment_size") == 0) {
+                    param->param_readSVGValue(max_segment_size_str.c_str());
+                } else if (strcmp(key, "displace_x") == 0) {
+                    param->param_readSVGValue(displace_x_str.c_str());
+                } else if (strcmp(key, "displace_y") == 0) {
+                    param->param_readSVGValue(displace_y_str.c_str());
+                } else if (strcmp(key, "handles") == 0) {
+                    param->param_readSVGValue("along");
+                } else if (strcmp(key, "shift_nodes") == 0) {
+                    param->param_readSVGValue("true");
+                } else if (strcmp(key, "fixed_displacement") == 0) {
+                    param->param_readSVGValue("true");
+                } else if (strcmp(key, "spray_tool_friendly") == 0) {
+                    param->param_readSVGValue("true");
+                }
+            }
+            ++it;
+        }
+    }
+}
+
+void LPERoughen::doBeforeEffect(SPLPEItem const *lpeitem)
+{
+    if (spray_tool_friendly && seed == 0 && SP_OBJECT(lpeitem)->getId()) {
+        std::string id_item(SP_OBJECT(lpeitem)->getId());
+        long seed = static_cast<long>(boost::hash_value(id_item));
+        global_randomize.param_set_value(global_randomize.get_value(), seed);
+    }
+    displace_x.resetRandomizer();
+    displace_y.resetRandomizer();
+    global_randomize.resetRandomizer();
+    srand(1);
+}
+
+Gtk::Widget *LPERoughen::newWidget()
+{
+    Gtk::VBox *vbox = Gtk::manage(new Gtk::VBox(Effect::newWidget()));
+    vbox->set_border_width(5);
+    vbox->set_homogeneous(false);
+    vbox->set_spacing(2);
+    std::vector<Parameter *>::iterator it = param_vector.begin();
+    while (it != param_vector.end()) {
+        if ((*it)->widget_is_visible) {
+            Parameter *param = *it;
+            Gtk::Widget *widg = dynamic_cast<Gtk::Widget *>(param->param_newWidget());
+            if (param->param_key == "method") {
+                Gtk::Label *method_label = Gtk::manage(
+                    new Gtk::Label(Glib::ustring(_("<b>Add nodes</b> Subdivide each segment")), Gtk::ALIGN_START));
+                method_label->set_use_markup(true);
+                vbox->pack_start(*method_label, false, false, 2);
+                vbox->pack_start(*Gtk::manage(new Gtk::Separator(Gtk::ORIENTATION_HORIZONTAL)),
+                                 Gtk::PACK_EXPAND_WIDGET);
+            }
+            if (param->param_key == "displace_x") {
+                Gtk::Label *displace_x_label = Gtk::manage(
+                    new Gtk::Label(Glib::ustring(_("<b>Jitter nodes</b> Move nodes/handles")), Gtk::ALIGN_START));
+                displace_x_label->set_use_markup(true);
+                vbox->pack_start(*displace_x_label, false, false, 2);
+                vbox->pack_start(*Gtk::manage(new Gtk::Separator(Gtk::ORIENTATION_HORIZONTAL)),
+                                 Gtk::PACK_EXPAND_WIDGET);
+            }
+            if (param->param_key == "global_randomize") {
+                Gtk::Label *global_rand = Gtk::manage(new Gtk::Label(
+                    Glib::ustring(_("<b>Extra roughen</b> Add an extra layer of rough")), Gtk::ALIGN_START));
+                global_rand->set_use_markup(true);
+                vbox->pack_start(*global_rand, false, false, 2);
+                vbox->pack_start(*Gtk::manage(new Gtk::Separator(Gtk::ORIENTATION_HORIZONTAL)),
+                                 Gtk::PACK_EXPAND_WIDGET);
+            }
+            if (param->param_key == "handles") {
+                Gtk::Label *options = Gtk::manage(
+                    new Gtk::Label(Glib::ustring(_("<b>Options</b> Modify options to rough")), Gtk::ALIGN_START));
+                options->set_use_markup(true);
+                vbox->pack_start(*options, false, false, 2);
+                vbox->pack_start(*Gtk::manage(new Gtk::Separator(Gtk::ORIENTATION_HORIZONTAL)),
+                                 Gtk::PACK_EXPAND_WIDGET);
+            }
+            Glib::ustring *tip = param->param_getTooltip();
+            if (widg) {
+                vbox->pack_start(*widg, true, true, 2);
+                if (tip) {
+                    widg->set_tooltip_text(*tip);
+                } else {
+                    widg->set_tooltip_text("");
+                    widg->set_has_tooltip(false);
+                }
+            }
+        }
+        ++it;
+    }
+    if (Gtk::Widget *widg = defaultParamSet()) {
+        vbox->pack_start(*widg, true, true, 2);
+    }
+    return dynamic_cast<Gtk::Widget *>(vbox);
+}
+
+double LPERoughen::sign(double random_number)
+{
+    if (rand() % 100 < 49) {
+        random_number *= -1.;
+    }
+    return random_number;
+}
+
+Geom::Point LPERoughen::randomize(double max_length, bool is_node)
+{
+    double factor = 1.0 / 3.0;
+    if (is_node) {
+        factor = 1.0;
+    }
+    double displace_x_parsed = displace_x * global_randomize * factor;
+    double displace_y_parsed = displace_y * global_randomize * factor;
+    Geom::Point output = Geom::Point(sign(displace_x_parsed), sign(displace_y_parsed));
+    if (fixed_displacement) {
+        Geom::Ray ray(Geom::Point(0, 0), output);
+        output = Geom::Point::polar(ray.angle(), max_length);
+    }
+    return output;
+}
+
+void LPERoughen::doEffect(SPCurve *curve)
+{
+    Geom::PathVector const original_pathv = pathv_to_linear_and_cubic_beziers(curve->get_pathvector());
+    curve->reset();
+    for (const auto &path_it : original_pathv) {
+        if (path_it.empty())
+            continue;
+
+        Geom::Path::const_iterator curve_it1 = path_it.begin();
+        Geom::Path::const_iterator curve_it2 = ++(path_it.begin());
+        Geom::Path::const_iterator curve_endit = path_it.end_default();
+        SPCurve *nCurve = new SPCurve();
+        Geom::Point prev(0, 0);
+        Geom::Point last_move(0, 0);
+        nCurve->moveto(curve_it1->initialPoint());
+        if (path_it.closed()) {
+          const Geom::Curve &closingline = path_it.back_closed(); 
+          // the closing line segment is always of type 
+          // Geom::LineSegment.
+          if (are_near(closingline.initialPoint(), closingline.finalPoint())) {
+            // closingline.isDegenerate() did not work, because it only checks for
+            // *exact* zero length, which goes wrong for relative coordinates and
+            // rounding errors...
+            // the closing line segment has zero-length. So stop before that one!
+            curve_endit = path_it.end_open();
+          }
+        }
+        while (curve_it1 != curve_endit) {
+            Geom::CubicBezier const *cubic = nullptr;
+            cubic = dynamic_cast<Geom::CubicBezier const *>(&*curve_it1);
+            if (cubic) {
+                nCurve->curveto((*cubic)[1] + last_move, (*cubic)[2], curve_it1->finalPoint());
+            } else {
+                nCurve->lineto(curve_it1->finalPoint());
+            }
+            last_move = Geom::Point(0, 0);
+            double length = curve_it1->length(0.01);
+            std::size_t splits = 0;
+            if (method == DM_SEGMENTS) {
+                splits = segments;
+            } else {
+                splits = ceil(length / max_segment_size);
+            }
+            Geom::Curve const * original = nCurve->last_segment()->duplicate() ;
+            for (unsigned int t = 1; t <= splits; t++) {
+                if (t == splits && splits != 1) {
+                    continue;
+                }
+                SPCurve const * tmp;
+                if (splits == 1) {
+                    tmp = jitter(nCurve->last_segment(), prev, last_move);
+                } else {
+                    bool last = false;
+                    if (t == splits - 1) {
+                        last = true;
+                    }
+                    double time = Geom::nearest_time(original->pointAt((1. / (double)splits) * t), *nCurve->last_segment());
+                    tmp = addNodesAndJitter(nCurve->last_segment(), prev, last_move, time, last);
+                }
+                if (nCurve->get_segment_count() > 1) {
+                    nCurve->backspace();
+                    nCurve->append_continuous(tmp, 0.001);
+                } else {
+                    nCurve = tmp->copy();
+                }
+                delete tmp;
+            }
+            ++curve_it1;
+            ++curve_it2;
+        }
+        if (path_it.closed()) {
+            if (handles == HM_SMOOTH && curve_it1 == curve_endit) {
+                SPCurve *out = new SPCurve();
+                nCurve = nCurve->create_reverse();
+                Geom::CubicBezier const *cubic_start = dynamic_cast<Geom::CubicBezier const *>(nCurve->first_segment());
+                Geom::CubicBezier const *cubic = dynamic_cast<Geom::CubicBezier const *>(nCurve->last_segment());
+                Geom::Point oposite = nCurve->first_segment()->pointAt(1.0 / 3.0);
+                if (cubic_start) {
+                    Geom::Ray ray((*cubic_start)[1], (*cubic_start)[0]);
+                    double dist = Geom::distance((*cubic_start)[1], (*cubic_start)[0]);
+                    oposite = Geom::Point::polar(ray.angle(), dist) + (*cubic_start)[0];
+                }
+                if (cubic) {
+                    out->moveto((*cubic)[0]);
+                    out->curveto((*cubic)[1], oposite, (*cubic)[3]);
+                } else {
+                    out->moveto(nCurve->last_segment()->initialPoint());
+                    out->curveto(nCurve->last_segment()->initialPoint(), oposite, nCurve->last_segment()->finalPoint());
+                }
+                nCurve->backspace();
+                nCurve->append_continuous(out, 0.001);
+                nCurve = nCurve->create_reverse();
+            }
+            if (handles == HM_ALONG_NODES && curve_it1 == curve_endit) {
+                SPCurve *out = new SPCurve();
+                nCurve = nCurve->create_reverse();
+                Geom::CubicBezier const *cubic = dynamic_cast<Geom::CubicBezier const *>(nCurve->last_segment());
+                if (cubic) {
+                    out->moveto((*cubic)[0]);
+                    out->curveto((*cubic)[1], (*cubic)[2] - ((*cubic)[3] - nCurve->first_segment()->initialPoint()),
+                                 (*cubic)[3]);
+                    nCurve->backspace();
+                    nCurve->append_continuous(out, 0.001);
+                }
+                nCurve = nCurve->create_reverse();
+            }
+            nCurve->move_endpoints(nCurve->last_segment()->finalPoint(), nCurve->last_segment()->finalPoint());
+            nCurve->closepath_current();
+        }
+        curve->append(nCurve, false);
+        nCurve->reset();
+        delete nCurve;
+    }
+}
+
+SPCurve const * LPERoughen::addNodesAndJitter(Geom::Curve const *A, Geom::Point &prev, Geom::Point &last_move, double t,
+                                             bool last)
+{
+    SPCurve *out = new SPCurve();
+    Geom::CubicBezier const *cubic = dynamic_cast<Geom::CubicBezier const *>(&*A);
+    double max_length = Geom::distance(A->initialPoint(), A->pointAt(t)) / 3.0;
+    Geom::Point point_a1(0, 0);
+    Geom::Point point_a2(0, 0);
+    Geom::Point point_a3(0, 0);
+    Geom::Point point_b1(0, 0);
+    Geom::Point point_b2(0, 0);
+    Geom::Point point_b3(0, 0);
+    if (shift_nodes) {
+        point_a3 = randomize(max_length, true);
+        if (last) {
+            point_b3 = randomize(max_length, true);
+        }
+    }
+    if (handles == HM_RAND || handles == HM_SMOOTH) {
+        point_a1 = randomize(max_length);
+        point_a2 = randomize(max_length);
+        point_b1 = randomize(max_length);
+        if (last) {
+            point_b2 = randomize(max_length);
+        }
+    } else {
+        point_a2 = point_a3;
+        point_b1 = point_a3;
+        if (last) {
+            point_b2 = point_b3;
+        }
+    }
+    if (handles == HM_SMOOTH) {
+        if (cubic) {
+            std::pair<Geom::CubicBezier, Geom::CubicBezier> div = cubic->subdivide(t);
+            std::vector<Geom::Point> seg1 = div.first.controlPoints(), seg2 = div.second.controlPoints();
+            Geom::Ray ray(seg1[3] + point_a3, seg2[1] + point_a3);
+            double length = max_length;
+            if (!fixed_displacement) {
+                length = Geom::distance(seg1[3] + point_a3, seg2[1] + point_a3);
+            }
+            point_b1 = seg1[3] + point_a3 + Geom::Point::polar(ray.angle(), length);
+            point_b2 = seg2[2];
+            point_b3 = seg2[3] + point_b3;
+            point_a3 = seg1[3] + point_a3;
+            ray.setPoints(prev, A->initialPoint());
+            point_a1 = A->initialPoint() + Geom::Point::polar(ray.angle(), max_length);
+            if (last) {
+                Geom::Path b2(point_b3);
+                b2.appendNew<Geom::LineSegment>(point_a3);
+                length = max_length;
+                ray.setPoints(point_b3, point_b2);
+                if (!fixed_displacement) {
+                    length = Geom::distance(b2.pointAt(1.0 / 3.0), point_b3);
+                }
+                point_b2 = point_b3 + Geom::Point::polar(ray.angle(), length);
+            }
+            ray.setPoints(point_b1, point_a3);
+            point_a2 = point_a3 + Geom::Point::polar(ray.angle(), max_length);
+            if (last) {
+                prev = point_b2;
+            } else {
+                prev = point_a2;
+            }
+            out->moveto(seg1[0]);
+            out->curveto(point_a1, point_a2, point_a3);
+            out->curveto(point_b1, point_b2, point_b3);
+        } else {
+            Geom::Ray ray(A->pointAt(t) + point_a3, A->pointAt(t + (t / 3)));
+            double length = max_length;
+            if (!fixed_displacement) {
+                length = Geom::distance(A->pointAt(t) + point_a3, A->pointAt(t + (t / 3)));
+            }
+            point_b1 = A->pointAt(t) + point_a3 + Geom::Point::polar(ray.angle(), length);
+            point_b2 = A->pointAt(t + ((t / 3) * 2));
+            point_b3 = A->finalPoint() + point_b3;
+            point_a3 = A->pointAt(t) + point_a3;
+            ray.setPoints(prev, A->initialPoint());
+            point_a1 = A->initialPoint() + Geom::Point::polar(ray.angle(), max_length);
+            if (prev == Geom::Point(0, 0)) {
+                point_a1 = randomize(max_length);
+            }
+            if (last) {
+                Geom::Path b2(point_b3);
+                b2.appendNew<Geom::LineSegment>(point_a3);
+                length = max_length;
+                ray.setPoints(point_b3, point_b2);
+                if (!fixed_displacement) {
+                    length = Geom::distance(b2.pointAt(1.0 / 3.0), point_b3);
+                }
+                point_b2 = point_b3 + Geom::Point::polar(ray.angle(), length);
+            }
+            ray.setPoints(point_b1, point_a3);
+            point_a2 = point_a3 + Geom::Point::polar(ray.angle(), max_length);
+            if (last) {
+                prev = point_b2;
+            } else {
+                prev = point_a2;
+            }
+            out->moveto(A->initialPoint());
+            out->curveto(point_a1, point_a2, point_a3);
+            out->curveto(point_b1, point_b2, point_b3);
+        }
+    } else if (handles == HM_RETRACT) {
+        out->moveto(A->initialPoint());
+        out->lineto(A->pointAt(t) + point_a3);
+        if (cubic && !last) {
+            std::pair<Geom::CubicBezier, Geom::CubicBezier> div = cubic->subdivide(t);
+            std::vector<Geom::Point> seg2 = div.second.controlPoints();
+            out->curveto(seg2[1], seg2[2], seg2[3]);
+        } else {
+            out->lineto(A->finalPoint() + point_b3);
+        }
+    } else if (handles == HM_ALONG_NODES) {
+        if (cubic) {
+            std::pair<Geom::CubicBezier, Geom::CubicBezier> div = cubic->subdivide(t);
+            std::vector<Geom::Point> seg1 = div.first.controlPoints(), seg2 = div.second.controlPoints();
+            out->moveto(seg1[0]);
+            out->curveto(seg1[1] + last_move, seg1[2] + point_a3, seg1[3] + point_a3);
+            last_move = point_a3;
+            if (last) {
+                last_move = point_b3;
+            }
+            out->curveto(seg2[1] + point_a3, seg2[2] + point_b3, seg2[3] + point_b3);
+        } else {
+            out->moveto(A->initialPoint());
+            out->lineto(A->pointAt(t) + point_a3);
+            out->lineto(A->finalPoint() + point_b3);
+        }
+    } else if (handles == HM_RAND) {
+        if (cubic) {
+            std::pair<Geom::CubicBezier, Geom::CubicBezier> div = cubic->subdivide(t);
+            std::vector<Geom::Point> seg1 = div.first.controlPoints(), seg2 = div.second.controlPoints();
+            out->moveto(seg1[0]);
+            out->curveto(seg1[1] + point_a1, seg1[2] + point_a2 + point_a3, seg1[3] + point_a3);
+            out->curveto(seg2[1] + point_a3 + point_b1, seg2[2] + point_b2 + point_b3, seg2[3] + point_b3);
+        } else {
+            out->moveto(A->initialPoint());
+            out->lineto(A->pointAt(t) + point_a3);
+            out->lineto(A->finalPoint() + point_b3);
+        }
+    }
+    return out;
+}
+
+SPCurve *LPERoughen::jitter(Geom::Curve const *A, Geom::Point &prev, Geom::Point &last_move)
+{
+    SPCurve *out = new SPCurve();
+    Geom::CubicBezier const *cubic = dynamic_cast<Geom::CubicBezier const *>(&*A);
+    double max_length = Geom::distance(A->initialPoint(), A->finalPoint()) / 3.0;
+    Geom::Point point_a1(0, 0);
+    Geom::Point point_a2(0, 0);
+    Geom::Point point_a3(0, 0);
+    if (shift_nodes) {
+        point_a3 = randomize(max_length, true);
+    }
+    if (handles == HM_RAND || handles == HM_SMOOTH) {
+        point_a1 = randomize(max_length);
+        point_a2 = randomize(max_length);
+    }
+    if (handles == HM_SMOOTH) {
+        if (cubic) {
+            Geom::Ray ray(prev, A->initialPoint());
+            point_a1 = Geom::Point::polar(ray.angle(), max_length);
+            if (prev == Geom::Point(0, 0)) {
+                point_a1 = A->pointAt(1.0 / 3.0) + randomize(max_length);
+            }
+            ray.setPoints((*cubic)[3] + point_a3, (*cubic)[2] + point_a3);
+            point_a2 = randomize(max_length, ray.angle());
+            prev = (*cubic)[2] + point_a2;
+            out->moveto((*cubic)[0]);
+            out->curveto((*cubic)[0] + point_a1, (*cubic)[2] + point_a2 + point_a3, (*cubic)[3] + point_a3);
+        } else {
+            Geom::Ray ray(prev, A->initialPoint());
+            point_a1 = Geom::Point::polar(ray.angle(), max_length);
+            if (prev == Geom::Point(0, 0)) {
+                point_a1 = A->pointAt(1.0 / 3.0) + randomize(max_length);
+            }
+            ray.setPoints(A->finalPoint() + point_a3, A->pointAt((1.0 / 3.0) * 2) + point_a3);
+            point_a2 = randomize(max_length, ray.angle());
+            prev = A->pointAt((1.0 / 3.0) * 2) + point_a2 + point_a3;
+            out->moveto(A->initialPoint());
+            out->curveto(A->initialPoint() + point_a1, A->pointAt((1.0 / 3.0) * 2) + point_a2 + point_a3,
+                         A->finalPoint() + point_a3);
+        }
+    } else if (handles == HM_RETRACT) {
+        out->moveto(A->initialPoint());
+        out->lineto(A->finalPoint() + point_a3);
+    } else if (handles == HM_ALONG_NODES) {
+        if (cubic) {
+            out->moveto((*cubic)[0]);
+            out->curveto((*cubic)[1] + last_move, (*cubic)[2] + point_a3, (*cubic)[3] + point_a3);
+            last_move = point_a3;
+        } else {
+            out->moveto(A->initialPoint());
+            out->lineto(A->finalPoint() + point_a3);
+        }
+    } else if (handles == HM_RAND) {
+        out->moveto(A->initialPoint());
+        out->curveto(A->pointAt(0.3333) + point_a1, A->pointAt(0.6666) + point_a2 + point_a3,
+                     A->finalPoint() + point_a3);
+    }
+    return out;
+}
+
+Geom::Point LPERoughen::tPoint(Geom::Point A, Geom::Point B, double t)
+{
+    using Geom::X;
+    using Geom::Y;
+    return Geom::Point(A[X] + t * (B[X] - A[X]), A[Y] + t * (B[Y] - A[Y]));
+}
+
+}; // namespace LivePathEffect
+}; /* namespace Inkscape */
+
+/*
+  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 :