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Diffstat (limited to 'src/live_effects/lpe-lattice.cpp')
| -rw-r--r-- | src/live_effects/lpe-lattice.cpp | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/src/live_effects/lpe-lattice.cpp b/src/live_effects/lpe-lattice.cpp new file mode 100644 index 0000000..3dcc703 --- /dev/null +++ b/src/live_effects/lpe-lattice.cpp @@ -0,0 +1,310 @@ +// 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 : |