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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:29:01 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:29:01 +0000
commit35a96bde514a8897f6f0fcc41c5833bf63df2e2a (patch)
tree657d15a03cc46bd099fc2c6546a7a4ad43815d9f /src/live_effects/lpe-roughen.cpp
parentInitial commit. (diff)
downloadinkscape-35a96bde514a8897f6f0fcc41c5833bf63df2e2a.tar.xz
inkscape-35a96bde514a8897f6f0fcc41c5833bf63df2e2a.zip
Adding upstream version 1.0.2.upstream/1.0.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/live_effects/lpe-roughen.cpp')
-rw-r--r--src/live_effects/lpe-roughen.cpp559
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 :