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/* This file is part of the libdepixelize project
Copyright (C) 2013 Vinícius dos Santos Oliveira <vini.ipsmaker@gmail.com>
GNU Lesser General Public License Usage
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.
GNU General Public License Usage
Alternatively, this library may be used under the terms of the GNU General
Public License as published by the Free Software Foundation, either version
2 of the License, or (at your option) any later version.
You should have received a copy of the GNU General Public License along with
this library. If not, see <http://www.gnu.org/licenses/>.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
*/
#ifndef LIBDEPIXELIZE_TRACER_SPLINES_KOPF2011_H
#define LIBDEPIXELIZE_TRACER_SPLINES_KOPF2011_H
#include "../splines.h"
#include "homogeneoussplines.h"
#include "optimization-kopf2011.h"
namespace Tracer {
/**
* Maybe the pass-by-value and then move idiom should be more efficient. But all
* this is inlinable and we're not even in C++11 yet.
*/
template<class T>
Geom::Path worker_helper(const std::vector< Point<T> > &source1, bool optimize)
{
typedef Geom::LineSegment Line;
typedef Geom::QuadraticBezier Quad;
typedef typename std::vector< Point<T> >::const_iterator iterator;
std::vector< Point<T> > source;
if ( optimize )
source = Tracer::optimize(source1);
else
source = source1;
iterator it = source.begin();
Point<T> prev = source.back();
Geom::Path ret(to_geom_point(midpoint(prev, *it)));
for ( iterator end = source.end() ; it != end ; ++it ) {
#if LIBDEPIXELIZE_ENABLE_EXPERIMENTAL_FEATURES
// remove redundant points
if ( !it->visible ) {
prev = *it;
continue;
}
#endif // LIBDEPIXELIZE_ENABLE_EXPERIMENTAL_FEATURES
if ( !prev.visible ) {
Geom::Point middle = to_geom_point(midpoint(prev, *it));
if ( ret.finalPoint() != middle ) {
// All generated invisible points are straight lines
ret.appendNew<Line>(middle);
}
}
Point<T> next = (it + 1 == end) ? source.front() : *(it + 1);
Point<T> middle = midpoint(*it, next);
if ( !it->smooth ) {
ret.appendNew<Line>(to_geom_point(*it));
ret.appendNew<Line>(to_geom_point(middle));
} else {
ret.appendNew<Quad>(to_geom_point(*it), to_geom_point(middle));
}
prev = *it;
}
return ret;
}
/**
* It should be used by worker threads. Convert only one object.
*/
template<class T>
void worker(const typename HomogeneousSplines<T>::Polygon &source,
Splines::Path &dest, bool optimize)
{
//dest.pathVector.reserve(source.holes.size() + 1);
for ( int i = 0 ; i != 4 ; ++i )
dest.rgba[i] = source.rgba[i];
dest.pathVector.push_back(worker_helper(source.vertices, optimize));
for ( typename std::vector< std::vector< Point<T> > >::const_iterator
it = source.holes.begin(), end = source.holes.end()
; it != end ; ++it ) {
dest.pathVector.push_back(worker_helper(*it, optimize));
}
}
template<typename T, bool adjust_splines>
Splines::Splines(const SimplifiedVoronoi<T, adjust_splines> &diagram) :
_width(diagram.width()),
_height(diagram.height())
{
_paths.reserve(diagram.size());
for ( typename SimplifiedVoronoi<T, adjust_splines>::const_iterator
it = diagram.begin() , end = diagram.end() ; it != end ; ++it ) {
Path path;
path.pathVector
.push_back(Geom::Path(to_geom_point(it->vertices.front())));
for ( typename std::vector< Point<T> >::const_iterator
it2 = ++it->vertices.begin(), end2 = it->vertices.end()
; it2 != end2 ; ++it2 ) {
path.pathVector.back()
.appendNew<Geom::LineSegment>(Geom::Point(it2->x, it2->y));
}
for ( int i = 0 ; i != 4 ; ++i )
path.rgba[i] = it->rgba[i];
_paths.push_back(path);
}
}
template<class T>
Splines::Splines(const HomogeneousSplines<T> &homogeneousSplines,
bool optimize, int /*nthreads*/) :
_paths(homogeneousSplines.size()),
_width(homogeneousSplines.width()),
_height(homogeneousSplines.height())
{
// TODO: It should be threaded
iterator paths_it = begin();
for ( typename HomogeneousSplines<T>::const_iterator
it = homogeneousSplines.begin(), end = homogeneousSplines.end()
; it != end ; ++it, ++paths_it ) {
worker<T>(*it, *paths_it, optimize);
}
}
} // namespace Tracer
#endif // LIBDEPIXELIZE_TRACER_SPLINES_KOPF2011_H
/*
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:encoding=utf-8:textwidth=99 :
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