lpe-roughen.cpp revision a7e81150b867e54cf50d331e30bb88f5676248c6
/**
* @file
* Roughen LPE implementation. Creates roughen paths.
*/
/* Authors:
* Jabier Arraiza Cenoz <jabier.arraiza@marker.es>
*
* Thanks to all people involved specialy to Josh Andler for the idea and to the
* original extensions authors.
*
* Copyright (C) 2014 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <gtkmm.h>
#include "desktop.h"
#include "live_effects/lpe-roughen.h"
#include "display/curve.h"
#include "live_effects/parameter/parameter.h"
#include <boost/functional/hash.hpp>
#include "helper/geom.h"
#include <glibmm/i18n.h>
#include <cmath>
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),
// initialise your parameters here:
method(_("Method"), _("Division method"), "method", DMConverter, &wr,
this, DM_SEGMENTS),
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),
max_smooth_angle(_("Max. smooth handle angle"), _("Max. smooth handle angle"),
"max_smooth_angle", &wr, this, 20),
shift_nodes(_("Shift nodes"), _("Shift nodes"), "shift_nodes", &wr, this,
true),
fixed_displacement(_("Fixed displacement"), _("Fixed displacement, 1/3 of segment lenght"),
"fixed_displacement", &wr, this, false),
spray_tool_friendly(_("Spray Tool friendly"), _("For use with spray tool"),
"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(&max_smooth_angle);
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(1);
segments.param_set_range(1, Geom::infinity());
segments.param_set_increments(1, 1);
segments.param_set_digits(0);
max_smooth_angle.param_set_range(0, 359);
max_smooth_angle.param_set_increments(1, 1);
max_smooth_angle.param_set_digits(0);
seed = 0;
}
LPERoughen::~LPERoughen() {}
void LPERoughen::doBeforeEffect(SPLPEItem const *lpeitem)
{
if(spray_tool_friendly && seed == 0){
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);
SPLPEItem * item = const_cast<SPLPEItem*>(lpeitem);
item->apply_to_clippath(item);
item->apply_to_mask(item);
}
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::HSeparator()),
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::HSeparator()),
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 a 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::HSeparator()),
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::HSeparator()),
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;
}
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_lenght, double direction)
{
double displace_x_parsed = displace_x * global_randomize;
double displace_y_parsed = displace_y * global_randomize;
Geom::Point output = Geom::Point(sign(displace_x_parsed), sign(displace_y_parsed));
if( direction != 0){
int angle = (int)max_smooth_angle;
if (angle == 0){
angle = 1;
}
double dist = Geom::distance(Geom::Point(0,0),output);
output = Geom::Point::polar(direction + sign(Geom::deg_to_rad(rand() % angle)), dist);
}
if( fixed_displacement ){
Geom::Ray ray(Geom::Point(0,0),output);
output = Geom::Point::polar(ray.angle(), max_lenght);
}
return output;
}
void LPERoughen::doEffect(SPCurve *curve)
{
Geom::PathVector const original_pathv = pathv_to_linear_and_cubic_beziers(curve->get_pathvector());
curve->reset();
for (Geom::PathVector::const_iterator path_it = original_pathv.begin();
path_it != original_pathv.end(); ++path_it) {
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());
while (curve_it1 != curve_endit) {
Geom::CubicBezier const *cubic = NULL;
cubic = dynamic_cast<Geom::CubicBezier const *>(&*curve_it1);
if (cubic) {
nCurve->curveto((*cubic)[1], (*cubic)[2], curve_it1->finalPoint());
} else {
nCurve->lineto(curve_it1->finalPoint());
}
double length = curve_it1->length(0.001);
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] - last_move, (*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_lenght = 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_lenght);
if(last){
point_b3 = randomize(max_lenght);
}
}
if (handles == HM_RAND || handles == HM_SMOOTH) {
point_a1 = randomize(max_lenght);
point_a2 = randomize(max_lenght);
point_b1 = randomize(max_lenght);
if(last){
point_b2 = randomize(max_lenght);
}
} else {
point_a2 = point_a3;
point_b1 = point_a3;
if(last){
point_b2 = point_b3;
}
}
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_SMOOTH && 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(prev,A->initialPoint());
point_a1 = Geom::Point::polar(ray.angle(), max_lenght);
if(prev == Geom::Point(0,0)){
point_a1 = randomize(max_lenght);
}
ray.setPoints(seg1[3] + point_a3, seg2[1] + point_a3);
point_b1 = randomize(max_lenght, ray.angle());
if(last){
ray.setPoints(seg2[3] + point_b3, A->pointAt(1 - (t / 3)) + point_b3);
point_b2 = randomize(max_lenght, ray.angle());
}
ray.setPoints(seg2[1] + point_a3 + point_b1, seg2[0] + point_a3);
point_a2 = Geom::Point::polar(ray.angle(), max_lenght);
if(last){
prev = A->pointAt(1 - (t / 3)) + point_b2 + point_b3;
} else {
prev = seg1[3] + point_a2 + point_a3;
}
out->moveto(seg1[0]);
out->curveto(seg1[0] + point_a1, seg1[3] + point_a2 + point_a3, seg1[3] + point_a3);
if(last){
out->curveto(seg2[1] + point_a3 + point_b1, A->pointAt(1 - (t / 3)) + point_b2 + point_b3, seg2[3] + point_b3);
} else {
out->curveto(seg2[1] + point_a3 + point_b1, seg2[2] + point_b2 + point_b3, seg2[3] + point_b3);
}
} else if(handles == HM_SMOOTH && !cubic) {
Geom::Ray ray(prev,A->initialPoint());
point_a1 = Geom::Point::polar(ray.angle(), max_lenght);
if(prev==Geom::Point(0,0)){
point_a1 = randomize(max_lenght);
}
ray.setPoints(A->pointAt(t) + point_a3, A->pointAt(t + (t / 3)) + point_a3);
point_b1 = randomize(max_lenght, ray.angle());
if(last){
ray.setPoints(A->finalPoint() + point_b3, A->pointAt(t +((t / 3) * 2)) + point_b3);
point_b2 = randomize(max_lenght, ray.angle());
}
ray.setPoints(A->pointAt(t + (t / 3)) + point_a3 + point_b1, A->pointAt(t) + point_a3);
point_a2 = Geom::Point::polar(ray.angle(), max_lenght);
if(last){
prev = A->pointAt(t +((t / 3) * 2)) + point_b2 + point_b3;
} else {
prev = A->pointAt(t) + point_a3 + point_a2;
}
out->moveto(A->initialPoint());
out->curveto(A->initialPoint() + point_a1, A->pointAt(t) + point_a3 + point_a2, A->pointAt(t) + point_a3);
out->curveto(A->pointAt(t + (t / 3)) + point_a3 + point_b1, A->pointAt(t +((t / 3) * 2)) + point_b2 + point_b3, A->finalPoint() + point_b3);
} else 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]);
if(handles == HM_ALONG_NODES){
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->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 if (handles == HM_RAND) {
out->moveto(A->initialPoint());
out->curveto(A->pointAt(t / 3) + point_a1, A->pointAt((t / 3) * 2) + point_a2 + point_a3, A->pointAt(t) + point_a3);
out->curveto(A->pointAt(t + (t / 3)) + point_a3 + point_b1, A->pointAt(t +((t / 3) * 2)) + point_b2 + point_b3, A->finalPoint() + 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_lenght = 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_lenght);
}
if (handles == HM_RAND || handles == HM_SMOOTH) {
point_a1 = randomize(max_lenght);
point_a2 = randomize(max_lenght);
}
if(handles == HM_RETRACT){
out->moveto(A->initialPoint());
out->lineto(A->finalPoint() + point_a3);
} else if(handles == HM_SMOOTH && cubic) {
Geom::Ray ray(prev,A->initialPoint());
point_a1 = Geom::Point::polar(ray.angle(), max_lenght);
if(prev == Geom::Point(0,0)){
point_a1 = A->pointAt(1.0/3.0) + randomize(max_lenght);
}
ray.setPoints((*cubic)[3] + point_a3, (*cubic)[2] + point_a3);
point_a2 = randomize(max_lenght, 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 if(handles == HM_SMOOTH && !cubic) {
Geom::Ray ray(prev,A->initialPoint());
point_a1 = Geom::Point::polar(ray.angle(), max_lenght);
if(prev==Geom::Point(0,0)){
point_a1 = A->pointAt(1.0/3.0) + randomize(max_lenght);
}
ray.setPoints(A->finalPoint() + point_a3, A->pointAt((1.0/3.0) * 2) + point_a3);
point_a2 = randomize(max_lenght, 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 (cubic) {
out->moveto((*cubic)[0]);
if(handles == HM_ALONG_NODES){
out->curveto((*cubic)[1] + last_move, (*cubic)[2] + point_a3, (*cubic)[3] + point_a3);
last_move = point_a3;
} else {
out->curveto((*cubic)[1] + point_a1, (*cubic)[2] + point_a2 + point_a3, (*cubic)[3] + 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);
} else {
out->moveto(A->initialPoint());
out->lineto(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 :