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// SPDX-License-Identifier: GPL-2.0-or-later
/** \file
* LPE <lattice> implementation
*/
/*
* Authors:
* Johan Engelen <j.b.c.engelen@utwente.nl>
* Steren Giannini
* No� Falzon
* Victor Navez
*
* Copyright (C) 2007-2008 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "live_effects/lpe-lattice.h"
#include "display/curve.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 {
LPELattice::LPELattice(LivePathEffectObject *lpeobject) :
Effect(lpeobject),
// initialise your parameters here:
grid_point0(_("Control handle 0:"), _("Control handle 0"), "gridpoint0", &wr, this),
grid_point1(_("Control handle 1:"), _("Control handle 1"), "gridpoint1", &wr, this),
grid_point2(_("Control handle 2:"), _("Control handle 2"), "gridpoint2", &wr, this),
grid_point3(_("Control handle 3:"), _("Control handle 3"), "gridpoint3", &wr, this),
grid_point4(_("Control handle 4:"), _("Control handle 4"), "gridpoint4", &wr, this),
grid_point5(_("Control handle 5:"), _("Control handle 5"), "gridpoint5", &wr, this),
grid_point6(_("Control handle 6:"), _("Control handle 6"), "gridpoint6", &wr, this),
grid_point7(_("Control handle 7:"), _("Control handle 7"), "gridpoint7", &wr, this),
grid_point8(_("Control handle 8:"), _("Control handle 8"), "gridpoint8", &wr, this),
grid_point9(_("Control handle 9:"), _("Control handle 9"), "gridpoint9", &wr, this),
grid_point10(_("Control handle 10:"), _("Control handle 10"), "gridpoint10", &wr, this),
grid_point11(_("Control handle 11:"), _("Control handle 11"), "gridpoint11", &wr, this),
grid_point12(_("Control handle 12:"), _("Control handle 12"), "gridpoint12", &wr, this),
grid_point13(_("Control handle 13:"), _("Control handle 13"), "gridpoint13", &wr, this),
grid_point14(_("Control handle 14:"), _("Control handle 14"), "gridpoint14", &wr, this),
grid_point15(_("Control handle 15:"), _("Control handle 15"), "gridpoint15", &wr, this)
{
// register all your parameters here, so Inkscape knows which parameters this effect has:
registerParameter(&grid_point0);
registerParameter(&grid_point1);
registerParameter(&grid_point2);
registerParameter(&grid_point3);
registerParameter(&grid_point4);
registerParameter(&grid_point5);
registerParameter(&grid_point6);
registerParameter(&grid_point7);
registerParameter(&grid_point8);
registerParameter(&grid_point9);
registerParameter(&grid_point10);
registerParameter(&grid_point11);
registerParameter(&grid_point12);
registerParameter(&grid_point13);
registerParameter(&grid_point14);
registerParameter(&grid_point15);
apply_to_clippath_and_mask = true;
}
LPELattice::~LPELattice()
= default;
Geom::Piecewise<Geom::D2<Geom::SBasis> >
LPELattice::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in)
{
D2<SBasis2d> sb2;
//Initialisation of the sb2
for(unsigned dim = 0; dim < 2; dim++) {
sb2[dim].us = 2;
sb2[dim].vs = 2;
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(16);
handles[0] = &grid_point0;
handles[1] = &grid_point1;
handles[2] = &grid_point2;
handles[3] = &grid_point3;
handles[4] = &grid_point4;
handles[5] = &grid_point5;
handles[6] = &grid_point6;
handles[7] = &grid_point7;
handles[8] = &grid_point8;
handles[9] = &grid_point9;
handles[10] = &grid_point10;
handles[11] = &grid_point11;
handles[12] = &grid_point12;
handles[13] = &grid_point13;
handles[14] = &grid_point14;
handles[15] = &grid_point15;
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.
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*(3-2*ui))*width/3.,
(vi + iv*(3-2*vi))*height/3.);
//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.size(); i++) {
D2<SBasis> B = pwd2_in[i];
B -= origin;
B*= 1/width;
//Here comes the magic
D2<SBasis> tB = compose_each(sb2,B);
tB = tB * width + origin;
output.push(tB,i+1);
}
return output;
}
void
LPELattice::doBeforeEffect (SPLPEItem const* lpeitem)
{
original_bbox(lpeitem, false, true);
}
void
LPELattice::resetDefaults(SPItem const* item)
{
Effect::resetDefaults(item);
original_bbox(SP_LPE_ITEM(item), false, true);
// place the 16 control points
grid_point0[Geom::X] = boundingbox_X.min();
grid_point0[Geom::Y] = boundingbox_Y.min();
grid_point1[Geom::X] = boundingbox_X.max();
grid_point1[Geom::Y] = boundingbox_Y.min();
grid_point2[Geom::X] = boundingbox_X.min();
grid_point2[Geom::Y] = boundingbox_Y.max();
grid_point3[Geom::X] = boundingbox_X.max();
grid_point3[Geom::Y] = boundingbox_Y.max();
grid_point4[Geom::X] = 1.0/3*boundingbox_X.max()+2.0/3*boundingbox_X.min();
grid_point4[Geom::Y] = boundingbox_Y.min();
grid_point5[Geom::X] = 2.0/3*boundingbox_X.max()+1.0/3*boundingbox_X.min();
grid_point5[Geom::Y] = boundingbox_Y.min();
grid_point6[Geom::X] = 1.0/3*boundingbox_X.max()+2.0/3*boundingbox_X.min();
grid_point6[Geom::Y] = boundingbox_Y.max();
grid_point7[Geom::X] = 2.0/3*boundingbox_X.max()+1.0/3*boundingbox_X.min();
grid_point7[Geom::Y] = boundingbox_Y.max();
grid_point8[Geom::X] = boundingbox_X.min();
grid_point8[Geom::Y] = 1.0/3*boundingbox_Y.max()+2.0/3*boundingbox_Y.min();
grid_point9[Geom::X] = boundingbox_X.max();
grid_point9[Geom::Y] = 1.0/3*boundingbox_Y.max()+2.0/3*boundingbox_Y.min();
grid_point10[Geom::X] = boundingbox_X.min();
grid_point10[Geom::Y] = 2.0/3*boundingbox_Y.max()+1.0/3*boundingbox_Y.min();
grid_point11[Geom::X] = boundingbox_X.max();
grid_point11[Geom::Y] = 2.0/3*boundingbox_Y.max()+1.0/3*boundingbox_Y.min();
grid_point12[Geom::X] = 1.0/3*boundingbox_X.max()+2.0/3*boundingbox_X.min();
grid_point12[Geom::Y] = 1.0/3*boundingbox_Y.max()+2.0/3*boundingbox_Y.min();
grid_point13[Geom::X] = 2.0/3*boundingbox_X.max()+1.0/3*boundingbox_X.min();
grid_point13[Geom::Y] = 1.0/3*boundingbox_Y.max()+2.0/3*boundingbox_Y.min();
grid_point14[Geom::X] = 1.0/3*boundingbox_X.max()+2.0/3*boundingbox_X.min();
grid_point14[Geom::Y] = 2.0/3*boundingbox_Y.max()+1.0/3*boundingbox_Y.min();
grid_point15[Geom::X] = 2.0/3*boundingbox_X.max()+1.0/3*boundingbox_X.min();
grid_point15[Geom::Y] = 2.0/3*boundingbox_Y.max()+1.0/3*boundingbox_Y.min();
grid_point1.param_update_default(grid_point1);
grid_point2.param_update_default(grid_point2);
grid_point3.param_update_default(grid_point3);
grid_point4.param_update_default(grid_point4);
grid_point5.param_update_default(grid_point5);
grid_point6.param_update_default(grid_point6);
grid_point7.param_update_default(grid_point7);
grid_point8.param_update_default(grid_point8);
grid_point9.param_update_default(grid_point9);
grid_point10.param_update_default(grid_point10);
grid_point11.param_update_default(grid_point11);
grid_point12.param_update_default(grid_point12);
grid_point13.param_update_default(grid_point13);
grid_point14.param_update_default(grid_point14);
grid_point15.param_update_default(grid_point15);
}
/**
void
LPELattice::addHelperPathsImpl(SPLPEItem *lpeitem, SPDesktop *desktop)
{
SPCurve *c = new SPCurve ();
c->moveto(grid_point0);
c->lineto(grid_point4);
c->lineto(grid_point5);
c->lineto(grid_point1);
c->moveto(grid_point8);
c->lineto(grid_point12);
c->lineto(grid_point13);
c->lineto(grid_point9);
c->moveto(grid_point10);
c->lineto(grid_point14);
c->lineto(grid_point15);
c->lineto(grid_point11);
c->moveto(grid_point2);
c->lineto(grid_point6);
c->lineto(grid_point7);
c->lineto(grid_point3);
c->moveto(grid_point0);
c->lineto(grid_point8);
c->lineto(grid_point10);
c->lineto(grid_point2);
c->moveto(grid_point4);
c->lineto(grid_point12);
c->lineto(grid_point14);
c->lineto(grid_point6);
c->moveto(grid_point5);
c->lineto(grid_point13);
c->lineto(grid_point15);
c->lineto(grid_point7);
c->moveto(grid_point1);
c->lineto(grid_point9);
c->lineto(grid_point11);
c->lineto(grid_point3);
// TODO: factor this out (and remove the #include of desktop.h above)
SPCanvasItem *canvasitem = sp_nodepath_generate_helperpath(desktop, c, lpeitem, 0x009000ff);
Inkscape::Display::TemporaryItem* tmpitem = desktop->add_temporary_canvasitem (canvasitem, 0);
lpeitem->lpe_helperpaths.push_back(tmpitem);
c->unref();
}
**/
/* ######################## */
} //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 :
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