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// SPDX-License-Identifier: GPL-2.0-or-later
/** \file
* LPE interpolate_points implementation
* Interpolates between knots of the input path.
*/
/*
* Authors:
* Johan Engelen
*
* Copyright (C) Johan Engelen 2014 <j.b.c.engelen@alumnus.utwente.nl>
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "live_effects/lpe-interpolate_points.h"
#include "live_effects/lpe-powerstroke-interpolators.h"
// TODO due to internal breakage in glibmm headers, this must be last:
#include <glibmm/i18n.h>
namespace Inkscape {
namespace LivePathEffect {
static const Util::EnumData<unsigned> InterpolatorTypeData[] = {
{Geom::Interpolate::INTERP_LINEAR , N_("Linear"), "Linear"},
{Geom::Interpolate::INTERP_CUBICBEZIER , N_("CubicBezierFit"), "CubicBezierFit"},
{Geom::Interpolate::INTERP_CUBICBEZIER_JOHAN , N_("CubicBezierJohan"), "CubicBezierJohan"},
{Geom::Interpolate::INTERP_SPIRO , N_("SpiroInterpolator"), "SpiroInterpolator"},
{Geom::Interpolate::INTERP_CENTRIPETAL_CATMULLROM, N_("Centripetal Catmull-Rom"), "CentripetalCatmullRom"}
};
static const Util::EnumDataConverter<unsigned> InterpolatorTypeConverter(InterpolatorTypeData, sizeof(InterpolatorTypeData)/sizeof(*InterpolatorTypeData));
LPEInterpolatePoints::LPEInterpolatePoints(LivePathEffectObject *lpeobject)
: Effect(lpeobject)
, interpolator_type(
_("Interpolator type:"),
_("Determines which kind of interpolator will be used to interpolate between stroke width along the path"),
"interpolator_type", InterpolatorTypeConverter, &wr, this, Geom::Interpolate::INTERP_CENTRIPETAL_CATMULLROM)
{
show_orig_path = false;
registerParameter( &interpolator_type );
}
LPEInterpolatePoints::~LPEInterpolatePoints()
= default;
Geom::PathVector
LPEInterpolatePoints::doEffect_path (Geom::PathVector const & path_in)
{
Geom::PathVector path_out;
std::unique_ptr<Geom::Interpolate::Interpolator> interpolator( Geom::Interpolate::Interpolator::create(static_cast<Geom::Interpolate::InterpolatorType>(interpolator_type.get_value())) );
for(const auto & path_it : path_in) {
if (path_it.empty())
continue;
if (path_it.closed()) {
g_warning("Interpolate points LPE currently ignores whether path is closed or not.");
}
std::vector<Geom::Point> pts;
pts.push_back(path_it.initialPoint());
for (Geom::Path::const_iterator it = path_it.begin(), e = path_it.end_default(); it != e; ++it) {
pts.push_back((*it).finalPoint());
}
Geom::Path path = interpolator->interpolateToPath(pts);
path_out.push_back(path);
}
return path_out;
}
} //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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