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#include "ExtrusionEntityCollection.hpp"
#include <algorithm>
#include <cmath>
#include <map>
namespace Slic3r {
ExtrusionEntityCollection::ExtrusionEntityCollection(const ExtrusionEntityCollection& collection)
: orig_indices(collection.orig_indices), no_sort(collection.no_sort)
{
this->append(collection.entities);
}
ExtrusionEntityCollection::ExtrusionEntityCollection(const ExtrusionPaths &paths)
: no_sort(false)
{
this->append(paths);
}
ExtrusionEntityCollection& ExtrusionEntityCollection::operator= (const ExtrusionEntityCollection &other)
{
ExtrusionEntityCollection tmp(other);
this->swap(tmp);
return *this;
}
void
ExtrusionEntityCollection::swap (ExtrusionEntityCollection &c)
{
std::swap(this->entities, c.entities);
std::swap(this->orig_indices, c.orig_indices);
std::swap(this->no_sort, c.no_sort);
}
ExtrusionEntityCollection::~ExtrusionEntityCollection()
{
for (ExtrusionEntitiesPtr::iterator it = this->entities.begin(); it != this->entities.end(); ++it)
delete *it;
}
ExtrusionEntityCollection::operator ExtrusionPaths() const
{
ExtrusionPaths paths;
for (ExtrusionEntitiesPtr::const_iterator it = this->entities.begin(); it != this->entities.end(); ++it) {
if (const ExtrusionPath* path = dynamic_cast<const ExtrusionPath*>(*it))
paths.push_back(*path);
}
return paths;
}
ExtrusionEntityCollection*
ExtrusionEntityCollection::clone() const
{
ExtrusionEntityCollection* coll = new ExtrusionEntityCollection(*this);
for (size_t i = 0; i < coll->entities.size(); ++i) {
coll->entities[i] = this->entities[i]->clone();
}
return coll;
}
void
ExtrusionEntityCollection::reverse()
{
for (ExtrusionEntitiesPtr::iterator it = this->entities.begin(); it != this->entities.end(); ++it) {
// Don't reverse it if it's a loop, as it doesn't change anything in terms of elements ordering
// and caller might rely on winding order
if (!(*it)->is_loop()) (*it)->reverse();
}
std::reverse(this->entities.begin(), this->entities.end());
}
Point
ExtrusionEntityCollection::first_point() const
{
return this->entities.front()->first_point();
}
Point
ExtrusionEntityCollection::last_point() const
{
return this->entities.back()->last_point();
}
void
ExtrusionEntityCollection::append(const ExtrusionEntity &entity)
{
this->entities.push_back(entity.clone());
}
void
ExtrusionEntityCollection::append(const ExtrusionEntitiesPtr &entities)
{
for (ExtrusionEntitiesPtr::const_iterator ptr = entities.begin(); ptr != entities.end(); ++ptr)
this->append(**ptr);
}
void
ExtrusionEntityCollection::append(const ExtrusionPaths &paths)
{
for (ExtrusionPaths::const_iterator path = paths.begin(); path != paths.end(); ++path)
this->append(*path);
}
ExtrusionEntityCollection
ExtrusionEntityCollection::chained_path(bool no_reverse, std::vector<size_t>* orig_indices) const
{
ExtrusionEntityCollection coll;
this->chained_path(&coll, no_reverse, orig_indices);
return coll;
}
void
ExtrusionEntityCollection::chained_path(ExtrusionEntityCollection* retval, bool no_reverse, std::vector<size_t>* orig_indices) const
{
if (this->entities.empty()) return;
this->chained_path_from(this->entities.front()->first_point(), retval, no_reverse, orig_indices);
}
void
ExtrusionEntityCollection::chained_path_from(Point start_near, ExtrusionEntityCollection* retval, bool no_reverse, std::vector<size_t>* orig_indices) const
{
if (this->no_sort) {
*retval = *this;
return;
}
retval->entities.reserve(this->entities.size());
retval->orig_indices.reserve(this->entities.size());
// if we're asked to return the original indices, build a map
std::map<ExtrusionEntity*,size_t> indices_map;
ExtrusionEntitiesPtr my_paths;
for (ExtrusionEntitiesPtr::const_iterator it = this->entities.begin(); it != this->entities.end(); ++it) {
ExtrusionEntity* entity = (*it)->clone();
my_paths.push_back(entity);
if (orig_indices != NULL) indices_map[entity] = it - this->entities.begin();
}
Points endpoints;
for (ExtrusionEntitiesPtr::iterator it = my_paths.begin(); it != my_paths.end(); ++it) {
endpoints.push_back((*it)->first_point());
if (no_reverse || !(*it)->can_reverse()) {
endpoints.push_back((*it)->first_point());
} else {
endpoints.push_back((*it)->last_point());
}
}
while (!my_paths.empty()) {
// find nearest point
int start_index = start_near.nearest_point_index(endpoints);
int path_index = start_index/2;
ExtrusionEntity* entity = my_paths.at(path_index);
// never reverse loops, since it's pointless for chained path and callers might depend on orientation
if (start_index % 2 && !no_reverse && entity->can_reverse()) {
entity->reverse();
}
retval->entities.push_back(my_paths.at(path_index));
if (orig_indices != NULL) orig_indices->push_back(indices_map[entity]);
my_paths.erase(my_paths.begin() + path_index);
endpoints.erase(endpoints.begin() + 2*path_index, endpoints.begin() + 2*path_index + 2);
start_near = retval->entities.back()->last_point();
}
}
Polygons
ExtrusionEntityCollection::grow() const
{
Polygons pp;
for (ExtrusionEntitiesPtr::const_iterator it = this->entities.begin(); it != this->entities.end(); ++it) {
Polygons entity_pp = (*it)->grow();
pp.insert(pp.end(), entity_pp.begin(), entity_pp.end());
}
return pp;
}
/* Recursively count paths and loops contained in this collection */
size_t
ExtrusionEntityCollection::items_count() const
{
size_t count = 0;
for (ExtrusionEntitiesPtr::const_iterator it = this->entities.begin(); it != this->entities.end(); ++it) {
if ((*it)->is_collection()) {
ExtrusionEntityCollection* collection = dynamic_cast<ExtrusionEntityCollection*>(*it);
count += collection->items_count();
} else {
++count;
}
}
return count;
}
/* Returns a single vector of pointers to all non-collection items contained in this one */
void
ExtrusionEntityCollection::flatten(ExtrusionEntityCollection* retval) const
{
for (ExtrusionEntitiesPtr::const_iterator it = this->entities.begin(); it != this->entities.end(); ++it) {
if ((*it)->is_collection()) {
ExtrusionEntityCollection* collection = dynamic_cast<ExtrusionEntityCollection*>(*it);
retval->append(collection->flatten().entities);
} else {
retval->append(**it);
}
}
}
ExtrusionEntityCollection
ExtrusionEntityCollection::flatten() const
{
ExtrusionEntityCollection coll;
this->flatten(&coll);
return coll;
}
double
ExtrusionEntityCollection::min_mm3_per_mm() const
{
double min_mm3_per_mm = 0;
for (ExtrusionEntitiesPtr::const_iterator it = this->entities.begin(); it != this->entities.end(); ++it) {
double mm3_per_mm = (*it)->min_mm3_per_mm();
if (min_mm3_per_mm == 0) {
min_mm3_per_mm = mm3_per_mm;
} else {
min_mm3_per_mm = fmin(min_mm3_per_mm, mm3_per_mm);
}
}
return min_mm3_per_mm;
}
}
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