path: root/src/live_effects/lpe-lattice2.cpp

// SPDX-License-Identifier: GPL-2.0-or-later
/** \file
 * LPE <lattice2> implementation

 */
/*
 * Authors:
 *   Johan Engelen <j.b.c.engelen@utwente.nl>
 *   Steren Giannini
 *   No� Falzon
 *   Victor Navez
 *   ~suv
 *   Jabiertxo Arraiza
 *
 * Copyright (C) 2007-2008 Authors
 *
 * Released under GNU GPL v2+, read the file 'COPYING' for more information.
 */

#include <gtkmm.h>
#include "live_effects/lpe-lattice2.h"
#include "display/curve.h"
#include "helper/geom.h"
#include <2geom/sbasis-2d.h>
#include <2geom/bezier-to-sbasis.h>

// TODO due to internal breakage in glibmm headers, this must be last:
#include <glibmm/i18n.h>

using namespace Geom;

namespace Inkscape {
namespace LivePathEffect {

LPELattice2::LPELattice2(LivePathEffectObject *lpeobject) :
    Effect(lpeobject),
    horizontal_mirror(_("Mirror movements in horizontal"), _("Mirror movements in horizontal"), "horizontal_mirror", &wr, this, false),
    vertical_mirror(_("Mirror movements in vertical"), _("Mirror movements in vertical"), "vertical_mirror", &wr, this, false),
    perimetral(_("Use only perimeter"), _("Use only perimeter"), "perimetral", &wr, this, false),
    live_update(_("Update while moving knots (maybe slow)"), _("Update while moving knots (maybe slow)"), "live_update", &wr, this, true),
    grid_point_0(_("Control 0:"), _("Control 0 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint0", &wr, this),
    grid_point_1(_("Control 1:"), _("Control 1 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint1", &wr, this),
    grid_point_2(_("Control 2:"), _("Control 2 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint2", &wr, this),
    grid_point_3(_("Control 3:"), _("Control 3 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint3", &wr, this),
    grid_point_4(_("Control 4:"), _("Control 4 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint4", &wr, this),
    grid_point_5(_("Control 5:"), _("Control 5 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint5", &wr, this),
    grid_point_6(_("Control 6:"), _("Control 6 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint6", &wr, this),
    grid_point_7(_("Control 7:"), _("Control 7 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint7", &wr, this),
    grid_point_8x9(_("Control 8x9:"), _("Control 8x9 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint8x9", &wr, this),
    grid_point_10x11(_("Control 10x11:"), _("Control 10x11 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint10x11", &wr, this),
    grid_point_12(_("Control 12:"), _("Control 12 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint12", &wr, this),
    grid_point_13(_("Control 13:"), _("Control 13 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint13", &wr, this),
    grid_point_14(_("Control 14:"), _("Control 14 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint14", &wr, this),
    grid_point_15(_("Control 15:"), _("Control 15 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint15", &wr, this),
    grid_point_16(_("Control 16:"), _("Control 16 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint16", &wr, this),
    grid_point_17(_("Control 17:"), _("Control 17 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint17", &wr, this),
    grid_point_18(_("Control 18:"), _("Control 18 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint18", &wr, this),
    grid_point_19(_("Control 19:"), _("Control 19 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint19", &wr, this),
    grid_point_20x21(_("Control 20x21:"), _("Control 20x21 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint20x21", &wr, this),
    grid_point_22x23(_("Control 22x23:"), _("Control 22x23 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint22x23", &wr, this),
    grid_point_24x26(_("Control 24x26:"), _("Control 24x26 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint24x26", &wr, this),
    grid_point_25x27(_("Control 25x27:"), _("Control 25x27 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint25x27", &wr, this),
    grid_point_28x30(_("Control 28x30:"), _("Control 28x30 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint28x30", &wr, this),
    grid_point_29x31(_("Control 29x31:"), _("Control 29x31 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint29x31", &wr, this),
    grid_point_32x33x34x35(_("Control 32x33x34x35:"), _("Control 32x33x34x35 - <b>Ctrl+Alt+Click</b>: reset, <b>Ctrl</b>: move along axes"), "gridpoint32x33x34x35", &wr, this),
    expanded(false)
{
    // register all your parameters here, so Inkscape knows which parameters this effect has:
    registerParameter(&horizontal_mirror);
    registerParameter(&vertical_mirror);
    registerParameter(&perimetral);
    registerParameter(&live_update);
    registerParameter(&grid_point_0);
    registerParameter(&grid_point_1);
    registerParameter(&grid_point_2);
    registerParameter(&grid_point_3);
    registerParameter(&grid_point_4);
    registerParameter(&grid_point_5);
    registerParameter(&grid_point_6);
    registerParameter(&grid_point_7);
    registerParameter(&grid_point_8x9);
    registerParameter(&grid_point_10x11);
    registerParameter(&grid_point_12);
    registerParameter(&grid_point_13);
    registerParameter(&grid_point_14);
    registerParameter(&grid_point_15);
    registerParameter(&grid_point_16);
    registerParameter(&grid_point_17);
    registerParameter(&grid_point_18);
    registerParameter(&grid_point_19);
    registerParameter(&grid_point_20x21);
    registerParameter(&grid_point_22x23);
    registerParameter(&grid_point_24x26);
    registerParameter(&grid_point_25x27);
    registerParameter(&grid_point_28x30);
    registerParameter(&grid_point_29x31);
    registerParameter(&grid_point_32x33x34x35);
    apply_to_clippath_and_mask = true;
}

LPELattice2::~LPELattice2()
= default;

Geom::Piecewise<Geom::D2<Geom::SBasis> >
LPELattice2::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in)
{
    PathVector pathv = path_from_piecewise(pwd2_in,0.001);
    //this is because strange problems with sb2 and LineSegment
    PathVector cubic = pathv_to_cubicbezier(pathv);
    if (cubic.empty()) {
        return pwd2_in;
    }
    Geom::Piecewise<Geom::D2<Geom::SBasis> > const &pwd2_in_linear_and_cubic = paths_to_pw(cubic);
    D2<SBasis2d> sb2;

    //Initialisation of the sb2
    for(unsigned dim = 0; dim < 2; dim++) {
        sb2[dim].us = 3;
        sb2[dim].vs = 3;
        const int depth = sb2[dim].us*sb2[dim].vs;
        sb2[dim].resize(depth, Linear2d(0));
    }

    //Grouping the point params in a convenient vector

    std::vector<Geom::Point > handles(36);

    handles[0] = grid_point_0;
    handles[1] = grid_point_1;
    handles[2] = grid_point_2;
    handles[3] = grid_point_3;
    handles[4] = grid_point_4;
    handles[5] = grid_point_5;
    handles[6] = grid_point_6;
    handles[7] = grid_point_7;
    handles[8] = grid_point_8x9;
    handles[9] = grid_point_8x9;
    handles[10] = grid_point_10x11;
    handles[11] = grid_point_10x11;
    handles[12] = grid_point_12;
    handles[13] = grid_point_13;
    handles[14] = grid_point_14;
    handles[15] = grid_point_15;
    handles[16] = grid_point_16;
    handles[17] = grid_point_17;
    handles[18] = grid_point_18;
    handles[19] = grid_point_19;
    handles[20] = grid_point_20x21;
    handles[21] = grid_point_20x21;
    handles[22] = grid_point_22x23;
    handles[23] = grid_point_22x23;
    handles[24] = grid_point_24x26;
    handles[25] = grid_point_25x27;
    handles[26] = grid_point_24x26;
    handles[27] = grid_point_25x27;
    handles[28] = grid_point_28x30;
    handles[29] = grid_point_29x31;
    handles[30] = grid_point_28x30;
    handles[31] = grid_point_29x31;
    handles[32] = grid_point_32x33x34x35;
    handles[33] = grid_point_32x33x34x35;
    handles[34] = grid_point_32x33x34x35;
    handles[35] = grid_point_32x33x34x35;

    Geom::Point origin = Geom::Point(boundingbox_X.min(),boundingbox_Y.min());

    double width = boundingbox_X.extent();
    double height = boundingbox_Y.extent();

    //numbering is based on 4 rectangles.16
    for(unsigned dim = 0; dim < 2; dim++) {
        Geom::Point dir(0,0);
        dir[dim] = 1;
        for(unsigned vi = 0; vi < sb2[dim].vs; vi++) {
            for(unsigned ui = 0; ui < sb2[dim].us; ui++) {
                for(unsigned iv = 0; iv < 2; iv++) {
                    for(unsigned iu = 0; iu < 2; iu++) {
                        unsigned corner = iu + 2*iv;
                        unsigned i = ui + vi*sb2[dim].us;

                        //This is the offset from the Upperleft point
                        Geom::Point base(   (ui + iu*(4-2*ui))*width/4.,
                                            (vi + iv*(4-2*vi))*height/4.);

                        //Special action for corners
                        if(vi == 0 && ui == 0) {
                            base = Geom::Point(0,0);
                        }

                        // i = Upperleft corner of the considerated rectangle
                        // corner = actual corner of the rectangle
                        // origin = Upperleft point
                        double dl = dot((handles[corner+4*i] - (base + origin)), dir)/dot(dir,dir);
                        sb2[dim][i][corner] = dl/( dim ? height : width )*pow(4.0,ui+vi);
                    }
                }
            }
        }
    }

    Piecewise<D2<SBasis> >  output;
    output.push_cut(0.);
    for(unsigned i = 0; i < pwd2_in_linear_and_cubic.size(); i++) {
        D2<SBasis> B = pwd2_in_linear_and_cubic[i];
        B[Geom::X] -= origin[Geom::X];
        B[Geom::X]*= 1/width;
        B[Geom::Y] -= origin[Geom::Y];
        B[Geom::Y]*= 1/height;
        //Here comes the magic
        D2<SBasis> tB = compose_each(sb2,B);
        tB[Geom::X] = tB[Geom::X] * width + origin[Geom::X];
        tB[Geom::Y] = tB[Geom::Y] * height + origin[Geom::Y];

        output.push(tB,i+1);
    }
    return output;
}


Gtk::Widget *
LPELattice2::newWidget()
{
    // use manage here, because after deletion of Effect object, others might still be pointing to this widget.
    Gtk::Box *vbox = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_VERTICAL));

    vbox->set_border_width(5);
    vbox->set_homogeneous(false);
    vbox->set_spacing(6);
    Gtk::Box * hbox = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL,0));
    Gtk::Box *vbox_expander = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_VERTICAL));
    vbox_expander->set_border_width(0);
    vbox_expander->set_spacing(2);
    Gtk::Button * reset_button = Gtk::manage(new Gtk::Button(Glib::ustring(_("Reset grid"))));
    reset_button->signal_clicked().connect(sigc::mem_fun (*this,&LPELattice2::resetGrid));
    reset_button->set_size_request(140,30);
    vbox->pack_start(*hbox, true,true,2);
    hbox->pack_start(*reset_button, false, false,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 == "grid") {
                widg = nullptr;
            }
            Glib::ustring * tip = param->param_getTooltip();
            if (widg) {
                if (param->param_key == "horizontal_mirror" || 
                    param->param_key == "vertical_mirror" || 
                    param->param_key == "live_update" ||
                    param->param_key == "perimetral") 
                {
                    vbox->pack_start(*widg, true, true, 2);
                } else {
                    vbox_expander->pack_start(*widg, true, true, 2);
                }
                if (tip) {
                    widg->set_tooltip_text(*tip);
                } else {
                    widg->set_tooltip_text("");
                    widg->set_has_tooltip(false);
                }
            }
        }

        ++it;
    }

    expander = Gtk::manage(new Gtk::Expander(Glib::ustring(_("Show Points"))));
    expander->add(*vbox_expander);
    expander->set_expanded(expanded);
    vbox->pack_start(*expander, true, true, 2);
    expander->property_expanded().signal_changed().connect(sigc::mem_fun(*this, &LPELattice2::onExpanderChanged) );
    if(Gtk::Widget* widg = defaultParamSet()) {
        vbox->pack_start(*widg, true, true, 2);
    }
    return dynamic_cast<Gtk::Widget *>(vbox);
}

void
LPELattice2::onExpanderChanged()
{
    expanded = expander->get_expanded();
    if(expanded) {
        expander->set_label (Glib::ustring(_("Hide Points")));
    } else {
        expander->set_label (Glib::ustring(_("Show Points")));
    }
}
void
LPELattice2::vertical(PointParam &param_one, PointParam &param_two, Geom::Line vert)
{
    Geom::Point A = param_one;
    Geom::Point B = param_two;
    double Y = (A[Geom::Y] + B[Geom::Y])/2;
    A[Geom::Y] = Y;
    B[Geom::Y] = Y;
    Geom::Point nearest = vert.pointAt(vert.nearestTime(A));
    double distance_one = Geom::distance(A,nearest);
    double distance_two = Geom::distance(B,nearest);
    double distance_middle = (distance_one + distance_two)/2;
    if(A[Geom::X] > B[Geom::X]) {
        distance_middle *= -1;
    }
    A[Geom::X] = nearest[Geom::X] - distance_middle;
    B[Geom::X] = nearest[Geom::X] + distance_middle;
    param_one.param_setValue(A, live_update);
    param_two.param_setValue(B, live_update);
}

void
LPELattice2::horizontal(PointParam &param_one, PointParam &param_two, Geom::Line horiz)
{
    Geom::Point A = param_one;
    Geom::Point B = param_two;
    double X = (A[Geom::X] + B[Geom::X])/2;
    A[Geom::X] = X;
    B[Geom::X] = X;
    Geom::Point nearest = horiz.pointAt(horiz.nearestTime(A));
    double distance_one = Geom::distance(A,nearest);
    double distance_two = Geom::distance(B,nearest);
    double distance_middle = (distance_one + distance_two)/2;
    if(A[Geom::Y] > B[Geom::Y]) {
        distance_middle *= -1;
    }
    A[Geom::Y] = nearest[Geom::Y] - distance_middle;
    B[Geom::Y] = nearest[Geom::Y] + distance_middle;
    param_one.param_setValue(A, live_update);
    param_two.param_setValue(B, live_update);
}


void
LPELattice2::doBeforeEffect (SPLPEItem const* lpeitem)
{
    original_bbox(lpeitem, false, true);
    setDefaults();
    if (is_applied) {
        resetGrid();
    }
    Geom::Line vert(grid_point_8x9.param_get_default(),grid_point_10x11.param_get_default());
    Geom::Line horiz(grid_point_24x26.param_get_default(),grid_point_25x27.param_get_default());
    if(vertical_mirror) {
        vertical(grid_point_0, grid_point_1,vert);
        vertical(grid_point_2, grid_point_3,vert);
        vertical(grid_point_4, grid_point_5,vert);
        vertical(grid_point_6, grid_point_7,vert);
        vertical(grid_point_12, grid_point_13,vert);
        vertical(grid_point_14, grid_point_15,vert);
        vertical(grid_point_16, grid_point_17,vert);
        vertical(grid_point_18, grid_point_19,vert);
        vertical(grid_point_24x26, grid_point_25x27,vert);
        vertical(grid_point_28x30, grid_point_29x31,vert);
    }
    if(horizontal_mirror) {
        horizontal(grid_point_0, grid_point_2,horiz);
        horizontal(grid_point_1, grid_point_3,horiz);
        horizontal(grid_point_4, grid_point_6,horiz);
        horizontal(grid_point_5, grid_point_7,horiz);
        horizontal(grid_point_8x9, grid_point_10x11,horiz);
        horizontal(grid_point_12, grid_point_14,horiz);
        horizontal(grid_point_13, grid_point_15,horiz);
        horizontal(grid_point_16, grid_point_18,horiz);
        horizontal(grid_point_17, grid_point_19,horiz);
        horizontal(grid_point_20x21, grid_point_22x23,horiz);
    }
    if (perimetral) {
        grid_point_16.param_hide_knot(true);
        grid_point_20x21.param_hide_knot(true);
        grid_point_17.param_hide_knot(true);
        grid_point_28x30.param_hide_knot(true);
        grid_point_32x33x34x35.param_hide_knot(true);
        grid_point_29x31.param_hide_knot(true);
        grid_point_18.param_hide_knot(true);
        grid_point_22x23.param_hide_knot(true);
        grid_point_19.param_hide_knot(true);
        grid_point_16.param_set_default();
        grid_point_20x21.param_set_default();
        grid_point_17.param_set_default();
        grid_point_28x30.param_set_default();
        grid_point_32x33x34x35.param_set_default();
        grid_point_29x31.param_set_default();
        grid_point_18.param_set_default();
        grid_point_22x23.param_set_default();
        grid_point_19.param_set_default();
    } else {
        grid_point_16.param_hide_knot(false);
        grid_point_20x21.param_hide_knot(false);
        grid_point_17.param_hide_knot(false);
        grid_point_28x30.param_hide_knot(false);
        grid_point_32x33x34x35.param_hide_knot(false);
        grid_point_29x31.param_hide_knot(false);
        grid_point_18.param_hide_knot(false);
        grid_point_22x23.param_hide_knot(false);
        grid_point_19.param_hide_knot(false);
    }
}

void
LPELattice2::setDefaults()
{
    Geom::Point gp0((boundingbox_X.max()-boundingbox_X.min())/4*0+boundingbox_X.min(),
                    (boundingbox_Y.max()-boundingbox_Y.min())/4*0+boundingbox_Y.min());

    Geom::Point gp1((boundingbox_X.max()-boundingbox_X.min())/4*4+boundingbox_X.min(),
                    (boundingbox_Y.max()-boundingbox_Y.min())/4*0+boundingbox_Y.min());

    Geom::Point gp2((boundingbox_X.max()-boundingbox_X.min())/4*0+boundingbox_X.min(),
                    (boundingbox_Y.max()-boundingbox_Y.min())/4*4+boundingbox_Y.min());

    Geom::Point gp3((boundingbox_X.max()-boundingbox_X.min())/4*4+boundingbox_X.min(),
                    (boundingbox_Y.max()-boundingbox_Y.min())/4*4+boundingbox_Y.min());

    Geom::Point gp4((boundingbox_X.max()-boundingbox_X.min())/4*1+boundingbox_X.min(),
                    (boundingbox_Y.max()-boundingbox_Y.min())/4*0+boundingbox_Y.min());

    Geom::Point gp5((boundingbox_X.max()-boundingbox_X.min())/4*3+boundingbox_X.min(),
                    (boundingbox_Y.max()-boundingbox_Y.min())/4*0+boundingbox_Y.min());

    Geom::Point gp6((boundingbox_X.max()-boundingbox_X.min())/4*1+boundingbox_X.min(),
                    (boundingbox_Y.max()-boundingbox_Y.min())/4*4+boundingbox_Y.min());

    Geom::Point gp7((boundingbox_X.max()-boundingbox_X.min())/4*3+boundingbox_X.min(),
                    (boundingbox_Y.max()-boundingbox_Y.min())/4*4+boundingbox_Y.min());

    Geom::Point gp8x9((boundingbox_X.max()-boundingbox_X.min())/4*2+boundingbox_X.min(),
                      (boundingbox_Y.max()-boundingbox_Y.min())/4*0+boundingbox_Y.min());

    Geom::Point gp10x11((boundingbox_X.max()-boundingbox_X.min())/4*2+boundingbox_X.min(),
                        (boundingbox_Y.max()-boundingbox_Y.min())/4*4+boundingbox_Y.min());

    Geom::Point gp12((boundingbox_X.max()-boundingbox_X.min())/4*0+boundingbox_X.min(),
                     (boundingbox_Y.max()-boundingbox_Y.min())/4*1+boundingbox_Y.min());

    Geom::Point gp13((boundingbox_X.max()-boundingbox_X.min())/4*4+boundingbox_X.min(),
                     (boundingbox_Y.max()-boundingbox_Y.min())/4*1+boundingbox_Y.min());

    Geom::Point gp14((boundingbox_X.max()-boundingbox_X.min())/4*0+boundingbox_X.min(),
                     (boundingbox_Y.max()-boundingbox_Y.min())/4*3+boundingbox_Y.min());

    Geom::Point gp15((boundingbox_X.max()-boundingbox_X.min())/4*4+boundingbox_X.min(),
                     (boundingbox_Y.max()-boundingbox_Y.min())/4*3+boundingbox_Y.min());

    Geom::Point gp16((boundingbox_X.max()-boundingbox_X.min())/4*1+boundingbox_X.min(),
                     (boundingbox_Y.max()-boundingbox_Y.min())/4*1+boundingbox_Y.min());

    Geom::Point gp17((boundingbox_X.max()-boundingbox_X.min())/4*3+boundingbox_X.min(),
                     (boundingbox_Y.max()-boundingbox_Y.min())/4*1+boundingbox_Y.min());

    Geom::Point gp18((boundingbox_X.max()-boundingbox_X.min())/4*1+boundingbox_X.min(),
                     (boundingbox_Y.max()-boundingbox_Y.min())/4*3+boundingbox_Y.min());

    Geom::Point gp19((boundingbox_X.max()-boundingbox_X.min())/4*3+boundingbox_X.min(),
                     (boundingbox_Y.max()-boundingbox_Y.min())/4*3+boundingbox_Y.min());

    Geom::Point gp20x21((boundingbox_X.max()-boundingbox_X.min())/4*2+boundingbox_X.min(),
                        (boundingbox_Y.max()-boundingbox_Y.min())/4*1+boundingbox_Y.min());

    Geom::Point gp22x23((boundingbox_X.max()-boundingbox_X.min())/4*2+boundingbox_X.min(),
                        (boundingbox_Y.max()-boundingbox_Y.min())/4*3+boundingbox_Y.min());

    Geom::Point gp24x26((boundingbox_X.max()-boundingbox_X.min())/4*0+boundingbox_X.min(),
                        (boundingbox_Y.max()-boundingbox_Y.min())/4*2+boundingbox_Y.min());

    Geom::Point gp25x27((boundingbox_X.max()-boundingbox_X.min())/4*4+boundingbox_X.min(),
                        (boundingbox_Y.max()-boundingbox_Y.min())/4*2+boundingbox_Y.min());

    Geom::Point gp28x30((boundingbox_X.max()-boundingbox_X.min())/4*1+boundingbox_X.min(),
                        (boundingbox_Y.max()-boundingbox_Y.min())/4*2+boundingbox_Y.min());

    Geom::Point gp29x31((boundingbox_X.max()-boundingbox_X.min())/4*3+boundingbox_X.min(),
                        (boundingbox_Y.max()-boundingbox_Y.min())/4*2+boundingbox_Y.min());

    Geom::Point gp32x33x34x35((boundingbox_X.max()-boundingbox_X.min())/4*2+boundingbox_X.min(),
                              (boundingbox_Y.max()-boundingbox_Y.min())/4*2+boundingbox_Y.min());

    grid_point_0.param_update_default(gp0);
    grid_point_1.param_update_default(gp1);
    grid_point_2.param_update_default(gp2);
    grid_point_3.param_update_default(gp3);
    grid_point_4.param_update_default(gp4);
    grid_point_5.param_update_default(gp5);
    grid_point_6.param_update_default(gp6);
    grid_point_7.param_update_default(gp7);
    grid_point_8x9.param_update_default(gp8x9);
    grid_point_10x11.param_update_default(gp10x11);
    grid_point_12.param_update_default(gp12);
    grid_point_13.param_update_default(gp13);
    grid_point_14.param_update_default(gp14);
    grid_point_15.param_update_default(gp15);
    grid_point_16.param_update_default(gp16);
    grid_point_17.param_update_default(gp17);
    grid_point_18.param_update_default(gp18);
    grid_point_19.param_update_default(gp19);
    grid_point_20x21.param_update_default(gp20x21);
    grid_point_22x23.param_update_default(gp22x23);
    grid_point_24x26.param_update_default(gp24x26);
    grid_point_25x27.param_update_default(gp25x27);
    grid_point_28x30.param_update_default(gp28x30);
    grid_point_29x31.param_update_default(gp29x31);
    grid_point_32x33x34x35.param_update_default(gp32x33x34x35);
    grid_point_0.param_set_liveupdate(live_update);
    grid_point_1.param_set_liveupdate(live_update);
    grid_point_2.param_set_liveupdate(live_update);
    grid_point_3.param_set_liveupdate(live_update);
    grid_point_4.param_set_liveupdate(live_update);
    grid_point_5.param_set_liveupdate(live_update);
    grid_point_6.param_set_liveupdate(live_update);
    grid_point_7.param_set_liveupdate(live_update);
    grid_point_8x9.param_set_liveupdate(live_update);
    grid_point_10x11.param_set_liveupdate(live_update);
    grid_point_12.param_set_liveupdate(live_update);
    grid_point_13.param_set_liveupdate(live_update);
    grid_point_14.param_set_liveupdate(live_update);
    grid_point_15.param_set_liveupdate(live_update);
    grid_point_16.param_set_liveupdate(live_update);
    grid_point_17.param_set_liveupdate(live_update);
    grid_point_18.param_set_liveupdate(live_update);
    grid_point_19.param_set_liveupdate(live_update);
    grid_point_20x21.param_set_liveupdate(live_update);
    grid_point_22x23.param_set_liveupdate(live_update);
    grid_point_24x26.param_set_liveupdate(live_update);
    grid_point_25x27.param_set_liveupdate(live_update);
    grid_point_28x30.param_set_liveupdate(live_update);
    grid_point_29x31.param_set_liveupdate(live_update);
    grid_point_32x33x34x35.param_set_liveupdate(live_update);
}

void
LPELattice2::resetGrid()
{
    grid_point_0.param_set_default();
    grid_point_1.param_set_default();
    grid_point_2.param_set_default();
    grid_point_3.param_set_default();
    grid_point_4.param_set_default();
    grid_point_5.param_set_default();
    grid_point_6.param_set_default();
    grid_point_7.param_set_default();
    grid_point_8x9.param_set_default();
    grid_point_10x11.param_set_default();
    grid_point_12.param_set_default();
    grid_point_13.param_set_default();
    grid_point_14.param_set_default();
    grid_point_15.param_set_default();
    grid_point_16.param_set_default();
    grid_point_17.param_set_default();
    grid_point_18.param_set_default();
    grid_point_19.param_set_default();
    grid_point_20x21.param_set_default();
    grid_point_22x23.param_set_default();
    grid_point_24x26.param_set_default();
    grid_point_25x27.param_set_default();
    grid_point_28x30.param_set_default();
    grid_point_29x31.param_set_default();
    grid_point_32x33x34x35.param_set_default();
}

void
LPELattice2::resetDefaults(SPItem const* item)
{
    Effect::resetDefaults(item);
    original_bbox(SP_LPE_ITEM(item), false, true);
    setDefaults();
    resetGrid();
}

void
LPELattice2::calculateCurve(Geom::Point a,Geom::Point b, SPCurve* c, bool horizontal, bool move)
{
    using Geom::X;
    using Geom::Y;
    if(move) c->moveto(a);
    Geom::Point cubic1 = a + (1./3)* (b - a);
    Geom::Point cubic2 = b + (1./3)* (a - b);
    if(horizontal) c->curveto(Geom::Point(cubic1[X],a[Y]),Geom::Point(cubic2[X],b[Y]),b);
    else c->curveto(Geom::Point(a[X],cubic1[Y]),Geom::Point(b[X],cubic2[Y]),b);
}

void
LPELattice2::addCanvasIndicators(SPLPEItem const */*lpeitem*/, std::vector<Geom::PathVector> &hp_vec)
{
    hp_vec.clear();

    SPCurve *c = new SPCurve();
    if (perimetral) {
        calculateCurve(grid_point_0,grid_point_4, c,true, true);
        calculateCurve(grid_point_4,grid_point_8x9, c,true, false);
        calculateCurve(grid_point_8x9,grid_point_5, c,true, false);
        calculateCurve(grid_point_5,grid_point_1, c,true, false);
        
        calculateCurve(grid_point_1,grid_point_13, c, false, true);
        calculateCurve(grid_point_13,grid_point_25x27, c,false, false);
        calculateCurve(grid_point_25x27,grid_point_15, c,false, false);
        calculateCurve(grid_point_15,grid_point_3, c, false, false);
        
        calculateCurve(grid_point_2,grid_point_6, c,true, true);
        calculateCurve(grid_point_6,grid_point_10x11, c,true, false);
        calculateCurve(grid_point_10x11,grid_point_7, c,true, false);
        calculateCurve(grid_point_7,grid_point_3, c,true, false);
        
        calculateCurve(grid_point_0,grid_point_12, c,false, true);
        calculateCurve(grid_point_12,grid_point_24x26, c,false, false);
        calculateCurve(grid_point_24x26,grid_point_14, c,false, false);
        calculateCurve(grid_point_14,grid_point_2, c,false, false);
        
    } else {
        calculateCurve(grid_point_0,grid_point_4, c,true, true);
        calculateCurve(grid_point_4,grid_point_8x9, c,true, false);
        calculateCurve(grid_point_8x9,grid_point_5, c,true, false);
        calculateCurve(grid_point_5,grid_point_1, c,true, false);

        calculateCurve(grid_point_12,grid_point_16, c,true, true);
        calculateCurve(grid_point_16,grid_point_20x21, c,true, false);
        calculateCurve(grid_point_20x21,grid_point_17, c,true, false);
        calculateCurve(grid_point_17,grid_point_13, c,true, false);

        calculateCurve(grid_point_24x26,grid_point_28x30, c,true, true);
        calculateCurve(grid_point_28x30,grid_point_32x33x34x35, c,true, false);
        calculateCurve(grid_point_32x33x34x35,grid_point_29x31, c,true, false);
        calculateCurve(grid_point_29x31,grid_point_25x27, c,true, false);

        calculateCurve(grid_point_14,grid_point_18, c,true, true);
        calculateCurve(grid_point_18,grid_point_22x23, c,true, false);
        calculateCurve(grid_point_22x23,grid_point_19, c,true, false);
        calculateCurve(grid_point_19,grid_point_15, c,true, false);

        calculateCurve(grid_point_2,grid_point_6, c,true, true);
        calculateCurve(grid_point_6,grid_point_10x11, c,true, false);
        calculateCurve(grid_point_10x11,grid_point_7, c,true, false);
        calculateCurve(grid_point_7,grid_point_3, c,true, false);

        calculateCurve(grid_point_0,grid_point_12, c,false, true);
        calculateCurve(grid_point_12,grid_point_24x26, c,false, false);
        calculateCurve(grid_point_24x26,grid_point_14, c,false, false);
        calculateCurve(grid_point_14,grid_point_2, c,false, false);

        calculateCurve(grid_point_4,grid_point_16, c,false, true);
        calculateCurve(grid_point_16,grid_point_28x30, c,false, false);
        calculateCurve(grid_point_28x30,grid_point_18, c,false, false);
        calculateCurve(grid_point_18,grid_point_6, c,false, false);

        calculateCurve(grid_point_8x9,grid_point_20x21, c,false, true);
        calculateCurve(grid_point_20x21,grid_point_32x33x34x35, c,false, false);
        calculateCurve(grid_point_32x33x34x35,grid_point_22x23, c,false, false);
        calculateCurve(grid_point_22x23,grid_point_10x11, c,false, false);

        calculateCurve(grid_point_5,grid_point_17, c, false, true);
        calculateCurve(grid_point_17,grid_point_29x31, c,false, false);
        calculateCurve(grid_point_29x31,grid_point_19, c,false, false);
        calculateCurve(grid_point_19,grid_point_7, c,false, false);

        calculateCurve(grid_point_1,grid_point_13, c, false, true);
        calculateCurve(grid_point_13,grid_point_25x27, c,false, false);
        calculateCurve(grid_point_25x27,grid_point_15, c,false, false);
        calculateCurve(grid_point_15,grid_point_3, c, false, false);
    }
    hp_vec.push_back(c->get_pathvector());
}


/* ######################## */

} //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 :