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/**
* \file
* \brief Pathinfo iterate a Geom::PathVector and allow get info about it.
* \Usualy need a curve index to get the results
* \TODO: migrate more Inkscape loops to use it.
*/ /*
* Authors:
* 2015 Jabier Arraiza Cenoz<jabier.arraiza@marker.es>
*
* This code is in public domain
*/
#include <helper/geom-pathinfo.h>
#include <2geom/sbasis-to-bezier.h>
/**
* @brief Pathinfo store the _data of a Geom::PathVector and allow get info about it
*
*/
Pathinfo::Pathinfo() {}
Pathinfo::~Pathinfo() {}
void Pathinfo::set(Geom::Piecewise<Geom::D2<Geom::SBasis> > pwd2)
{
set(path_from_piecewise(remove_short_cuts(pwd2, 0.1), 0.001));
}
/** Store the base path _data
*/
void Pathinfo::set(Geom::PathVector path_vector, bool skip_degenerate)
{
_data.clear();
size_t counter = 0;
for (Geom::PathVector::const_iterator path_it = path_vector.begin();
path_it != path_vector.end(); ++path_it)
{
if (path_it->empty()) {
continue;
}
Geom::Path::const_iterator curve_it1 = path_it->begin();
Geom::Path::const_iterator curve_endit = path_it->end_default();
if (path_it->closed()) {
Geom::Curve const &closingline = path_it->back_closed();
if (are_near(closingline.initialPoint(), closingline.finalPoint())) {
curve_endit = path_it->end_open();
}
}
while (curve_it1 != curve_endit) {
if(curve_it1->isDegenerate() && skip_degenerate ){
++curve_it1;
continue;
}
++curve_it1;
counter++;
}
if (path_it->closed()) {
_data.push_back(std::make_pair(counter - 1, true));
} else {
_data.push_back(std::make_pair(counter - 1, false));
}
}
}
/** Size of pathvector
*/
size_t Pathinfo::size() const
{
return _data.back().first + 1;
}
/** Size of subpath
*/
size_t Pathinfo::subPathSize(size_t subpath_index) const
{
size_t size = 0;
if( _data.size() > subpath_index){
double prev = 0;
if(subpath_index != 0){
prev = _data[subpath_index - 1].first;
}
size = prev - _data[subpath_index].first + 1;
}
return size;
}
/** Get subpath index from a curve index
*/
size_t Pathinfo::subPathIndex(size_t index) const
{
for (size_t i = 0; i < _data.size(); i++) {
if (index <= _data[i].first) {
return i;
}
}
return 0;
}
/** Get subpath last index given a curve index
*/
size_t Pathinfo::last(size_t index) const
{
for (size_t i = 0; i < _data.size(); i++) {
if (index <= _data[i].first) {
return _data[i].first;
}
}
return 0;
}
/** Get subpath first index given a curve index
*/
size_t Pathinfo::first(size_t index) const
{
for (size_t i = 0; i < _data.size(); i++) {
if (index <= _data[i].first) {
if (i == 0) {
return 0;
} else {
return _data[i - 1].first + 1;
}
}
}
return 0;
}
/** Get previous index given a curve index
*/
boost::optional<size_t> Pathinfo::previous(size_t index) const
{
if (first(index) == index && closed(index)) {
return last(index);
}
if (first(index) == index && !closed(index)) {
return boost::none;
}
return index - 1;
}
/** Get next index given a curve index
*/
boost::optional<size_t> Pathinfo::next(size_t index) const
{
if (last(index) == index && closed(index)) {
return first(index);
}
if (last(index) == index && !closed(index)) {
return boost::none;
}
return index + 1;
}
/** Get if subpath is closed given a curve index
*/
bool Pathinfo::closed(size_t index) const
{
for (size_t i = 0; i < _data.size(); i++) {
if (index <= _data[i].first) {
return _data[i].second;
}
}
return false;
}
/*
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:fileencoding=utf-8:textwidth=99
// :
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