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ifcviewer: filter iterator to net IfcElements, void-limit setting

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Mirror bonsai's IfcImporter.process_element_filter so the streamer
walks only IfcElement (plus IfcProxy on IFC2X3/IFC4), drops
IfcFeatureElement except IfcSurfaceFeature, and routes elements
with more openings than the configurable void limit through a
second iterator pass with disable-opening-subtractions=true.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
Dion Moult
2026-04-29 08:54:35 +10:00
parent e21bd1ac96
commit b73cdd1a0e
5 changed files with 211 additions and 89 deletions
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src/ifcviewer/AppSettings.cpp
+17
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@@ -27,6 +27,8 @@ constexpr const char* kGeometryLibraryDefault = "hybrid-cgal-simple-opencascade"
constexpr const char* kShowStatsKey = "viewport/show_stats";
constexpr const char* kBackfaceCullingKey = "viewport/backface_culling";
constexpr const char* kLoadDataSourceKey = "loading/load_data_source";
constexpr const char* kVoidLimitKey = "loading/void_limit";
constexpr int kVoidLimitDefault = 30;
}
AppSettings& AppSettings::instance() {
@@ -82,12 +84,26 @@ void AppSettings::setLoadDataSource(bool value) {
emit loadDataSourceChanged(value);
}
int AppSettings::voidLimit() const {
return void_limit_;
}
void AppSettings::setVoidLimit(int value) {
if (value < 0) value = 0;
if (void_limit_ == value) return;
void_limit_ = value;
persist();
emit voidLimitChanged(value);
}
void AppSettings::load() {
QSettings settings;
geometry_library_ = settings.value(kGeometryLibraryKey, kGeometryLibraryDefault).toString();
show_stats_ = settings.value(kShowStatsKey, false).toBool();
backface_culling_ = settings.value(kBackfaceCullingKey, true).toBool();
load_data_source_ = settings.value(kLoadDataSourceKey, true).toBool();
void_limit_ = settings.value(kVoidLimitKey, kVoidLimitDefault).toInt();
if (void_limit_ < 0) void_limit_ = 0;
}
void AppSettings::persist() {
@@ -96,4 +112,5 @@ void AppSettings::persist() {
settings.setValue(kShowStatsKey, show_stats_);
settings.setValue(kBackfaceCullingKey, backface_culling_);
settings.setValue(kLoadDataSourceKey, load_data_source_);
settings.setValue(kVoidLimitKey, void_limit_);
}