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Diffstat (limited to 'src/live_effects/lpe-simplify.cpp')
| -rw-r--r-- | src/live_effects/lpe-simplify.cpp | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/src/live_effects/lpe-simplify.cpp b/src/live_effects/lpe-simplify.cpp new file mode 100644 index 000000000..d010e75a2 --- /dev/null +++ b/src/live_effects/lpe-simplify.cpp @@ -0,0 +1,287 @@ +#define INKSCAPE_LPE_SIMPLIFY_C +/* + * Released under GNU GPL, read the file 'COPYING' for more information + */ +#include <gtkmm/box.h> +#include <gtkmm/entry.h> +#include "live_effects/lpe-simplify.h" +#include "display/curve.h" +#include "live_effects/parameter/parameter.h" +#include <glibmm/i18n.h> +#include "helper/geom.h" +#include "livarot/Path.h" +#include "splivarot.h" +#include <2geom/svg-path-parser.h> +#include "desktop.h" +#include "inkscape.h" +#include "svg/svg.h" +#include "ui/tools/node-tool.h" +#include <2geom/d2.h> +#include <2geom/generic-rect.h> +#include <2geom/interval.h> + + +namespace Inkscape { +namespace LivePathEffect { + +LPESimplify::LPESimplify(LivePathEffectObject *lpeobject) + : Effect(lpeobject), + steps(_("Steps:"),_("Change number of simplify steps "), "steps", &wr, this,1), + threshold(_("Roughly threshold:"), _("Roughly threshold:"), "threshold", &wr, this, 0.003), + helper_size(_("Helper size:"), _("Helper size"), "helper_size", &wr, this, 2.), + nodes(_("Helper nodes"), _("Show helper nodes"), "nodes", &wr, this, false), + handles(_("Helper handles"), _("Show helper handles"), "handles", &wr, this, false), + simplifyindividualpaths(_("Paths separately"), _("Simplifying paths (separately)"), "simplifyindividualpaths", &wr, this, false), + simplifyJustCoalesce(_("Just coalesce"), _("Simplify just coalesce"), "simplifyJustCoalesce", &wr, this, false) + { + registerParameter(dynamic_cast<Parameter *>(&steps)); + registerParameter(dynamic_cast<Parameter *>(&threshold)); + registerParameter(dynamic_cast<Parameter *>(&helper_size)); + registerParameter(dynamic_cast<Parameter *>(&nodes)); + registerParameter(dynamic_cast<Parameter *>(&handles)); + registerParameter(dynamic_cast<Parameter *>(&simplifyindividualpaths)); + registerParameter(dynamic_cast<Parameter *>(&simplifyJustCoalesce)); + threshold.param_set_range(0., Geom::infinity()); + threshold.param_set_increments(0.0001, 0.0001); + threshold.param_set_digits(6); + steps.param_set_range(0, 100); + steps.param_set_increments(1, 1); + steps.param_set_digits(0); + helper_size.param_set_range(0.1, 100); + helper_size.param_set_increments(1, 1); + helper_size.param_set_digits(1); +} + +LPESimplify::~LPESimplify() {} + +void +LPESimplify::doBeforeEffect (SPLPEItem const* lpeitem) +{ + if(!hp.empty()){ + hp.clear(); + } + bbox = SP_ITEM(lpeitem)->visualBounds(); + +} + +Gtk::Widget * +LPESimplify::newWidget() +{ + // use manage here, because after deletion of Effect object, others might still be pointing to this widget. + 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(); + Gtk::HBox * buttons = Gtk::manage(new Gtk::HBox(true,0)); + Gtk::HBox * buttonsTwo = Gtk::manage(new Gtk::HBox(true,0)); + 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 == "simplifyindividualpaths" || + param->param_key == "simplifyJustCoalesce") + { + Glib::ustring * tip = param->param_getTooltip(); + if (widg) { + buttonsTwo->pack_start(*widg, true, true, 2); + if (tip) { + widg->set_tooltip_text(*tip); + } else { + widg->set_tooltip_text(""); + widg->set_has_tooltip(false); + } + } + } else if (param->param_key == "nodes" || + param->param_key == "handles") + { + Glib::ustring * tip = param->param_getTooltip(); + if (widg) { + buttons->pack_start(*widg, true, true, 2); + if (tip) { + widg->set_tooltip_text(*tip); + } else { + widg->set_tooltip_text(""); + widg->set_has_tooltip(false); + } + } + }else{ + Glib::ustring * tip = param->param_getTooltip(); + if (widg) { + Gtk::HBox * scalarParameter = dynamic_cast<Gtk::HBox *>(widg); + std::vector< Gtk::Widget* > childList = scalarParameter->get_children(); + Gtk::Entry* entryWidg = dynamic_cast<Gtk::Entry *>(childList[1]); + entryWidg->set_width_chars(8); + 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; + } + vbox->pack_start(*buttons,true, true, 2); + vbox->pack_start(*buttonsTwo,true, true, 2); + return dynamic_cast<Gtk::Widget *>(vbox); +} + +void +LPESimplify::doEffect(SPCurve *curve) { + Geom::PathVector const original_pathv = pathv_to_linear_and_cubic_beziers(curve->get_pathvector()); + gdouble size = Geom::L2(bbox->dimensions()); + //size /= Geom::Affine(0,0,0,0,0,0).descrim(); + Path* pathliv = Path_for_pathvector(original_pathv); + if(simplifyindividualpaths){ + size = Geom::L2(Geom::bounds_fast(original_pathv)->dimensions()); + } + for (int unsigned i = 0; i < steps; i++){ + if ( simplifyJustCoalesce ) { + pathliv->Coalesce(threshold * size); + }else{ + pathliv->ConvertEvenLines(threshold * size); + pathliv->Simplify(threshold * size); + } + } + Geom::PathVector outres = Geom::parse_svg_path(pathliv->svg_dump_path()); + generateHelperPath(outres); + curve->set_pathvector(outres); + if(SP_ACTIVE_DESKTOP && INK_IS_NODE_TOOL(SP_ACTIVE_DESKTOP->event_context)){ + SPDesktop* desktop = SP_ACTIVE_DESKTOP; + Inkscape::UI::Tools::NodeTool *nt = static_cast<Inkscape::UI::Tools::NodeTool*>(desktop->event_context); + nt->update_helperpath(); + } +} + +void +LPESimplify::generateHelperPath(Geom::PathVector result) +{ + if(!handles && !nodes){ + return; + } + + if(steps < 1){ + return; + } + + Geom::CubicBezier const *cubic = NULL; + for (Geom::PathVector::iterator path_it = result.begin(); path_it != result.end(); ++path_it) { + //Si está vacío... + if (path_it->empty()){ + continue; + } + //Itreadores + Geom::Path::const_iterator curve_it1 = path_it->begin(); // incoming curve + Geom::Path::const_iterator curve_it2 = + ++(path_it->begin()); // outgoing curve + Geom::Path::const_iterator curve_endit = + path_it->end_default(); // this determines when the loop has to stop + + if (path_it->closed()) { + // if the path is closed, maybe we have to stop a bit earlier because the + // closing line segment has zerolength. + 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(); + } + } + if(nodes){ + drawNode(curve_it1->initialPoint()); + } + while (curve_it2 != curve_endit) { + cubic = dynamic_cast<Geom::CubicBezier const *>(&*curve_it1); + if (cubic) { + if(handles){ + drawHandle((*cubic)[1]); + drawHandle((*cubic)[2]); + drawHandleLine((*cubic)[0],(*cubic)[1]); + drawHandleLine((*cubic)[2],(*cubic)[3]); + } + } + if(nodes){ + drawNode(curve_it1->finalPoint()); + } + ++curve_it1; + ++curve_it2; + } + cubic = dynamic_cast<Geom::CubicBezier const *>(&*curve_it1); + if (cubic) { + if(handles){ + drawHandle((*cubic)[1]); + drawHandle((*cubic)[2]); + drawHandleLine((*cubic)[0],(*cubic)[1]); + drawHandleLine((*cubic)[2],(*cubic)[3]); + } + } + if(nodes){ + drawNode(curve_it1->finalPoint()); + } + } +} + +void +LPESimplify::drawNode(Geom::Point p) +{ + double r = helper_size/0.67; + char const * svgd; + svgd = "M 0.999993,0.5 C 1.000065,0.7757576 0.7761859,1 0.4999926,1 0.2237994,1 -7.933901e-5,0.7757576 -7.339015e-6,0.5 -7.933901e-5,0.2242424 0.2237994,0 0.4999926,0 0.7761859,0 1.000065,0.2242424 0.999993,0.5 Z m -0.058561,0 C 0.9414949,0.74327 0.7438375,0.9416286 0.4999928,0.9416286 0.2561481,0.9416286 0.0584908,0.74327 0.0585543,0.5 0.0584908,0.25673 0.2561481,0.0583714 0.4999928,0.0583714 0.7438375,0.0583714 0.9414949,0.25673 0.9414313,0.5 Z m -0.3828447,0 c 8.5e-6,0.030303 -0.026228,0.060606 -0.058593,0.060606 -0.032366,0 -0.058603,-0.030303 -0.058593,-0.060606 -8.5e-6,-0.030303 0.026227,-0.060606 0.058593,-0.060606 0.032366,0 0.058603,0.030303 0.058593,0.060606 z"; + Geom::PathVector pathv = sp_svg_read_pathv(svgd); + pathv *= Geom::Affine(r,0,0,r,0,0); + pathv += p - Geom::Point(0.5*r,0.5*r); + hp.push_back(pathv[0]); + hp.push_back(pathv[1]); + hp.push_back(pathv[2]); +} + +void +LPESimplify::drawHandle(Geom::Point p) +{ + double r = helper_size/0.67; + char const * svgd; + svgd = "M 0.6999623,0.35 C 0.7000128,0.5430303 0.5433044,0.7 0.3499775,0.7 0.1566506,0.7 -5.778776e-5,0.5430303 -7.344202e-6,0.35 -5.778776e-5,0.1569697 0.1566506,0 0.3499775,0 0.5433044,0 0.7000128,0.1569697 0.6999623,0.35 Z"; + Geom::PathVector pathv = sp_svg_read_pathv(svgd); + pathv *= Geom::Affine(r,0,0,r,0,0); + pathv += p - Geom::Point(0.35*r,0.35*r); + hp.push_back(pathv[0]); +} + + +void +LPESimplify::drawHandleLine(Geom::Point p,Geom::Point p2) +{ + Geom::Path path; + path.start( p ); + path.appendNew<Geom::LineSegment>( p2 ); + hp.push_back(path); +} + +void +LPESimplify::addCanvasIndicators(SPLPEItem const */*lpeitem*/, std::vector<Geom::PathVector> &hp_vec) +{ + hp_vec.push_back(hp); +} + + +}; //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 : |