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Bugfix: segfault in SurfaceCollection->group(), fixed with a better implementation. #1566

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This commit is contained in:
Alessandro Ranellucci 2013-12-04 00:10:31 +01:00
parent 57fd6ad563
commit e9b87b69df
3 changed files with 21 additions and 38 deletions
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41
xs/src/SurfaceCollection.cpp
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@ -21,34 +21,31 @@ SurfaceCollection::simplify(double tolerance)
/* group surfaces by common properties */
void
SurfaceCollection::group(std::vector<SurfacesPtr> &retval, bool merge_solid)
SurfaceCollection::group(std::vector<SurfacesPtr> *retval, bool merge_solid)
{
typedef std::map<t_surface_group_key,SurfacesPtr> t_unique_map;
t_unique_map unique_map;
for (Surfaces::iterator it = this->surfaces.begin(); it != this->surfaces.end(); ++it) {
// build the t_surface_group_key struct with this surface's properties
t_surface_group_key key;
if (merge_solid && it->is_solid()) {
key.surface_type = stTop;
} else {
key.surface_type = it->surface_type;
// find a group with the same properties
SurfacesPtr* group = NULL;
for (std::vector<SurfacesPtr>::iterator git = retval->begin(); git != retval->end(); ++git) {
Surface* gkey = git->front();
if ((gkey->surface_type == it->surface_type || (merge_solid && gkey->is_solid() && it->is_solid()))
&& gkey->thickness == it->thickness
&& gkey->thickness_layers == it->thickness_layers
&& gkey->bridge_angle == it->bridge_angle) {
group = &*git;
break;
}
}
key.thickness = it->thickness;
key.thickness_layers = it->thickness_layers;
key.bridge_angle = it->bridge_angle;
// check whether we already have a group for these properties
if (unique_map.find(key) == unique_map.end()) {
// no group exists, add it
unique_map[key] = SurfacesPtr();
// if no group with these properties exists, add one
if (group == NULL) {
retval->resize(retval->size() + 1);
group = &retval->back();
}
unique_map[key].push_back(&*it);
// append surface to group
group->push_back(&*it);
}
retval.reserve(unique_map.size());
for (t_unique_map::const_iterator it = unique_map.begin(); it != unique_map.end(); ++it)
retval.push_back(it->second);
}
}