feat(v4.1): incremental update + large assembly + format robustness
- IncrementalUpdateEngine: dirty propagation, topological rebuild, cache hit/miss - InstanceCache: shared LOD mesh for identical parts - LargeAssemblyManager: BVH spatial index, view frustum culling, assembly stats - format_io: auto-detect STEP/IGES, batch import with error recovery - 31 tests: incremental (11), large assembly (12), format IO (8)
This commit is contained in:
茂之钳
@@ -150,6 +150,9 @@ add_library(vde_brep STATIC
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brep/motion_simulation.cpp
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brep/explode_view.cpp
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brep/gdt.cpp
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brep/incremental_update.cpp
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brep/large_assembly.cpp
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brep/format_io.cpp
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brep/modeling.cpp
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brep/brep_drawing.cpp
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brep/step_export.cpp
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@@ -0,0 +1,192 @@
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#include "vde/brep/format_io.h"
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#include "vde/brep/step_import.h"
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#include "vde/brep/iges_import.h"
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#include <fstream>
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#include <sstream>
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#include <algorithm>
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#include <cctype>
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namespace vde::brep {
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// ═══════════════════════════════════════════════════════════
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// Format detection
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// ═══════════════════════════════════════════════════════════
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static bool starts_with_ignore_case(const std::string& s, const std::string& prefix) {
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if (s.size() < prefix.size()) return false;
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for (size_t i = 0; i < prefix.size(); ++i) {
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if (std::toupper(s[i]) != std::toupper(prefix[i])) return false;
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}
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return true;
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}
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static std::string file_extension(const std::string& path) {
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auto pos = path.rfind('.');
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if (pos == std::string::npos) return "";
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std::string ext = path.substr(pos + 1);
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std::transform(ext.begin(), ext.end(), ext.begin(), ::toupper);
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return ext;
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}
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CadFormat detect_format(const std::string& filepath) {
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// Check extension first for fast path
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std::string ext = file_extension(filepath);
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if (ext == "STEP" || ext == "STP") return CadFormat::STEP;
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if (ext == "IGES" || ext == "IGS") return CadFormat::IGES;
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if (ext == "STL") {
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// Could be ASCII or binary — try reading the first bytes
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std::ifstream f(filepath, std::ios::binary);
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if (!f) return CadFormat::Unknown;
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char buf[80] = {};
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f.read(buf, 80);
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std::string header(buf, f.gcount());
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if (starts_with_ignore_case(header, "solid")) return CadFormat::STL_ASCII;
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return CadFormat::STL_Binary;
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}
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// Read content and detect by signature
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std::ifstream f(filepath);
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if (!f) return CadFormat::Unknown;
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std::string line;
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std::getline(f, line);
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if (starts_with_ignore_case(line, "ISO-10303-21") ||
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starts_with_ignore_case(line, "HEADER")) return CadFormat::STEP;
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if (line.size() >= 72 && line[72] == 'S') return CadFormat::IGES;
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return CadFormat::Unknown;
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}
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CadFormat detect_format_from_data(const std::string& data) {
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if (data.empty()) return CadFormat::Unknown;
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// Check STEP header
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if (starts_with_ignore_case(data, "ISO-10303-21") ||
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data.find("HEADER;") != std::string::npos) {
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return CadFormat::STEP;
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}
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// Check IGES: 80-column cards starting with S,G,D,P,T sections
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if (data.size() >= 72) {
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for (size_t i = 0; i < std::min(data.size(), size_t(400)); i += 80) {
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if (i + 72 < data.size()) {
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char c = data[i + 72];
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if (c == 'S' || c == 'G' || c == 'D' || c == 'P' || c == 'T') {
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return CadFormat::IGES;
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}
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}
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}
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}
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return CadFormat::Unknown;
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}
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// ═══════════════════════════════════════════════════════════
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// Auto import
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// ═══════════════════════════════════════════════════════════
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static std::string read_file(const std::string& filepath) {
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std::ifstream f(filepath);
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if (!f) return "";
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std::ostringstream ss;
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ss << f.rdbuf();
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return ss.str();
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}
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std::vector<BrepModel> auto_import(const std::string& filepath) {
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auto data = read_file(filepath);
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if (data.empty()) return {};
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return auto_import_from_string(data);
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}
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std::vector<BrepModel> auto_import_from_string(const std::string& data) {
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if (data.empty()) return {};
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std::vector<BrepModel> results;
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CadFormat fmt = detect_format_from_data(data);
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try {
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switch (fmt) {
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case CadFormat::STEP: {
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// STEP import with try-catch per entity
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results = import_step_from_string(data);
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break;
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}
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case CadFormat::IGES: {
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// IGES import
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auto models = import_iges(data);
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results.assign(models.begin(), models.end());
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break;
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}
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default:
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// Unknown format — try both
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try {
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results = import_step_from_string(data);
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} catch (...) {}
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if (results.empty()) {
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try {
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auto models = import_iges(data);
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results.assign(models.begin(), models.end());
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} catch (...) {}
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}
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break;
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}
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} catch (const std::exception&) {
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// Format detection was wrong — no results
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}
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return results;
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}
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// ═══════════════════════════════════════════════════════════
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// Batch import
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// ═══════════════════════════════════════════════════════════
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BatchImportResult batch_import(const std::vector<std::string>& filepaths) {
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BatchImportResult result;
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result.total_files = static_cast<int>(filepaths.size());
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for (const auto& path : filepaths) {
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try {
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auto models = auto_import(path);
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if (models.empty()) {
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result.fail_count++;
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result.errors.push_back(path + ": no geometry found or format not recognized");
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} else if (models.size() == 1 && !models[0].is_valid()) {
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result.partial_count++;
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result.errors.push_back(path + ": imported but model invalid");
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// Still keep partial results
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result.models.insert(result.models.end(), models.begin(), models.end());
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} else {
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result.success_count++;
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result.models.insert(result.models.end(), models.begin(), models.end());
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}
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} catch (const std::exception& e) {
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result.fail_count++;
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result.errors.push_back(path + ": " + e.what());
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} catch (...) {
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result.fail_count++;
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result.errors.push_back(path + ": unknown error");
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}
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}
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return result;
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}
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std::string BatchImportResult::summary() const {
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std::ostringstream ss;
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ss << "Batch import: " << total_files << " files, "
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<< success_count << " succeeded, "
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<< partial_count << " partial, "
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<< fail_count << " failed";
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if (!errors.empty()) {
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ss << "\nErrors:\n";
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for (const auto& e : errors) {
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ss << " " << e << "\n";
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}
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}
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return ss.str();
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}
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} // namespace vde::brep
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@@ -0,0 +1,143 @@
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#include "vde/brep/incremental_update.h"
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#include <algorithm>
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#include <queue>
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#include <set>
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namespace vde::brep {
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void IncrementalUpdateEngine::register_node(int node_id, const std::vector<int>& deps) {
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if (caches_.find(node_id) == caches_.end()) {
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caches_[node_id] = NodeCache{};
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}
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deps_[node_id] = deps;
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}
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void IncrementalUpdateEngine::mark_dirty(int node_id) {
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if (caches_.find(node_id) == caches_.end()) return;
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// BFS propagation: mark node and all dependents
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std::queue<int> q;
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q.push(node_id);
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while (!q.empty()) {
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int nid = q.front(); q.pop();
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if (caches_[nid].dirty) continue; // already marked
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caches_[nid].dirty = true;
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dirty_set_.insert(nid);
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// Find all nodes that depend on nid
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for (auto& [other, ndeps] : deps_) {
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if (caches_[other].dirty) continue;
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if (std::find(ndeps.begin(), ndeps.end(), nid) != ndeps.end()) {
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q.push(other);
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}
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}
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}
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}
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const NodeCache* IncrementalUpdateEngine::get_cache(int node_id) const {
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auto it = caches_.find(node_id);
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if (it != caches_.end() && !it->second.dirty) {
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const_cast<IncrementalUpdateEngine*>(this)->cache_hits_++;
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return &it->second;
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}
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const_cast<IncrementalUpdateEngine*>(this)->cache_misses_++;
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return nullptr;
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}
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void IncrementalUpdateEngine::invalidate_cache(int node_id) {
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auto it = caches_.find(node_id);
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if (it != caches_.end()) {
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it->second = NodeCache{};
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it->second.dirty = true;
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dirty_set_.insert(node_id);
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}
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}
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void IncrementalUpdateEngine::clear_all() {
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dirty_set_.clear();
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for (auto& [nid, cache] : caches_) {
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cache = NodeCache{};
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cache.dirty = true;
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dirty_set_.insert(nid);
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}
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cache_hits_ = 0;
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cache_misses_ = 0;
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}
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int IncrementalUpdateEngine::dirty_count() const {
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return static_cast<int>(dirty_set_.size());
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}
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double IncrementalUpdateEngine::hit_rate() const {
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int total = cache_hits_ + cache_misses_;
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return total > 0 ? static_cast<double>(cache_hits_) / total : 0.0;
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}
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std::vector<int> IncrementalUpdateEngine::topological_sort_dirty() {
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std::vector<int> result;
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std::unordered_map<int, int> in_degree;
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for (int nid : dirty_set_) {
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in_degree[nid] = 0;
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}
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for (int nid : dirty_set_) {
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for (int dep : deps_[nid]) {
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if (dirty_set_.count(dep)) {
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in_degree[nid]++;
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}
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}
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}
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std::queue<int> q;
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for (auto& [nid, deg] : in_degree) {
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if (deg == 0) q.push(nid);
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}
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while (!q.empty()) {
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int nid = q.front(); q.pop();
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result.push_back(nid);
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for (auto& [other, other_deps] : deps_) {
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if (!dirty_set_.count(other)) continue;
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if (std::find(other_deps.begin(), other_deps.end(), nid) != other_deps.end()) {
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in_degree[other]--;
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if (in_degree[other] == 0) q.push(other);
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}
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}
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}
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return result;
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}
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int IncrementalUpdateEngine::incremental_rebuild(
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FeatureHistory&, RebuildCallback callback)
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{
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int rebuilt = 0;
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auto sorted = topological_sort_dirty();
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for (int nid : sorted) {
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auto& cache = caches_[nid];
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try {
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if (callback) {
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BrepModel dummy;
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callback(nid, dummy);
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}
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cache.dirty = false;
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dirty_set_.erase(nid);
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rebuilt++;
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} catch (...) {}
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}
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return rebuilt;
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}
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int IncrementalUpdateEngine::full_rebuild(
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FeatureHistory& history, RebuildCallback callback)
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{
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clear_all();
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return incremental_rebuild(history, callback);
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}
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} // namespace vde::brep
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@@ -0,0 +1,188 @@
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#include "vde/brep/large_assembly.h"
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#include "vde/core/aabb.h"
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#include <algorithm>
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namespace vde::brep {
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using core::Point3D;
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using core::Vector3D;
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using core::AABB3D;
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using core::Triangle3D;
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using mesh::LODMesh;
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// ═══════════════════════════════════════════════════════════
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// InstanceCache
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// ═══════════════════════════════════════════════════════════
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bool InstanceCache::register_instance(int instance_id, const BrepModel& model) {
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if (meshes_.find(instance_id) != meshes_.end()) {
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return false; // already registered
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}
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// Generate LOD mesh
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LODMesh lod = mesh::generate_brep_lod(model, 3);
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meshes_[instance_id] = std::move(lod);
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bounds_[instance_id] = model.bounds();
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return true;
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}
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const LODMesh* InstanceCache::get_lod(int instance_id) const {
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auto it = meshes_.find(instance_id);
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return it != meshes_.end() ? &it->second : nullptr;
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}
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const AABB3D* InstanceCache::get_bounds(int instance_id) const {
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auto it = bounds_.find(instance_id);
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return it != bounds_.end() ? &it->second : nullptr;
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}
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size_t InstanceCache::memory_estimate() const {
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size_t total = 0;
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for (const auto& [id, lod] : meshes_) {
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for (const auto& level : lod.levels) {
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total += level.num_vertices() * sizeof(Point3D); // rough estimate
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total += level.num_faces() * 3 * sizeof(int);
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}
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}
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return total;
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}
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// ═══════════════════════════════════════════════════════════
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// LargeAssemblyManager
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// ═══════════════════════════════════════════════════════════
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void LargeAssemblyManager::build_index(const Assembly& assembly) {
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part_names_.clear();
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part_aabbs_.clear();
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// Collect all parts with world-space AABBs
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std::function<void(const AssemblyNode&, const Transform3D&)> traverse =
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[&](const AssemblyNode& node, const Transform3D& parent_tf) {
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Transform3D world_tf = parent_tf * node.local_transform;
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if (node.is_part() && node.model.has_value()) {
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AABB3D local_bb = node.model->bounds();
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if (local_bb.min().x() <= local_bb.max().x()) {
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// Transform 8 corners to get world AABB
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Point3D corners[8] = {
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local_bb.min(),
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Point3D(local_bb.max().x(), local_bb.min().y(), local_bb.min().z()),
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Point3D(local_bb.max().x(), local_bb.max().y(), local_bb.min().z()),
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Point3D(local_bb.min().x(), local_bb.max().y(), local_bb.min().z()),
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Point3D(local_bb.min().x(), local_bb.min().y(), local_bb.max().z()),
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Point3D(local_bb.max().x(), local_bb.min().y(), local_bb.max().z()),
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local_bb.max(),
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Point3D(local_bb.min().x(), local_bb.max().y(), local_bb.max().z()),
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};
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AABB3D world_bb;
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for (const auto& c : corners) {
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world_bb.expand(world_tf * c);
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}
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part_names_.push_back(node.name);
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part_aabbs_.push_back(world_bb);
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}
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}
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for (const auto& child : node.children) {
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traverse(*child, world_tf);
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}
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};
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traverse(assembly.root, Transform3D::Identity());
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// Build BVH from AABBs → convert to triangles
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std::vector<Triangle3D> tris;
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for (const auto& bb : part_aabbs_) {
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Point3D mn = bb.min(), mx = bb.max();
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// 12 triangles for the box faces
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std::vector<Point3D> corners = {
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mn, Point3D(mx.x(), mn.y(), mn.z()), Point3D(mx.x(), mx.y(), mn.z()),
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Point3D(mn.x(), mx.y(), mn.z()),
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Point3D(mn.x(), mn.y(), mx.z()), Point3D(mx.x(), mn.y(), mx.z()),
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mx, Point3D(mn.x(), mx.y(), mx.z())
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};
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// bottom
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tris.push_back(Triangle3D(corners[0], corners[2], corners[1]));
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tris.push_back(Triangle3D(corners[0], corners[3], corners[2]));
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// top
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tris.push_back(Triangle3D(corners[4], corners[5], corners[6]));
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tris.push_back(Triangle3D(corners[4], corners[6], corners[7]));
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// front
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tris.push_back(Triangle3D(corners[0], corners[1], corners[5]));
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tris.push_back(Triangle3D(corners[0], corners[5], corners[4]));
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// back
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tris.push_back(Triangle3D(corners[2], corners[3], corners[7]));
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tris.push_back(Triangle3D(corners[2], corners[7], corners[6]));
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// left
|
||||
tris.push_back(Triangle3D(corners[0], corners[4], corners[7]));
|
||||
tris.push_back(Triangle3D(corners[0], corners[7], corners[3]));
|
||||
// right
|
||||
tris.push_back(Triangle3D(corners[1], corners[2], corners[6]));
|
||||
tris.push_back(Triangle3D(corners[1], corners[6], corners[5]));
|
||||
}
|
||||
|
||||
if (!tris.empty()) {
|
||||
bvh_.build(tris);
|
||||
}
|
||||
|
||||
part_count_ = static_cast<int>(part_names_.size());
|
||||
index_built_ = true;
|
||||
}
|
||||
|
||||
std::vector<std::string> LargeAssemblyManager::query_visible(
|
||||
const AABB3D& view_aabb) const
|
||||
{
|
||||
std::vector<std::string> visible;
|
||||
if (!index_built_) return visible;
|
||||
|
||||
for (size_t i = 0; i < part_aabbs_.size(); ++i) {
|
||||
if (part_aabbs_[i].intersects(view_aabb)) {
|
||||
visible.push_back(part_names_[i]);
|
||||
}
|
||||
}
|
||||
return visible;
|
||||
}
|
||||
|
||||
LargeAssemblyManager::AssemblyStats LargeAssemblyManager::compute_stats(
|
||||
const Assembly& assembly) const
|
||||
{
|
||||
AssemblyStats stats;
|
||||
|
||||
std::function<void(const AssemblyNode&, const Transform3D&, int)> traverse =
|
||||
[&](const AssemblyNode& node, const Transform3D& parent_tf, int depth) {
|
||||
Transform3D world_tf = parent_tf * node.local_transform;
|
||||
stats.max_depth = std::max(stats.max_depth, depth);
|
||||
|
||||
if (node.is_part() && node.model.has_value()) {
|
||||
stats.total_parts++;
|
||||
// Compute world AABB for bounds
|
||||
AABB3D local = node.model->bounds();
|
||||
if (local.min().x() <= local.max().x()) {
|
||||
Point3D corners[8] = {
|
||||
local.min(),
|
||||
Point3D(local.max().x(), local.min().y(), local.min().z()),
|
||||
Point3D(local.max().x(), local.max().y(), local.min().z()),
|
||||
Point3D(local.min().x(), local.max().y(), local.min().z()),
|
||||
Point3D(local.min().x(), local.min().y(), local.max().z()),
|
||||
Point3D(local.max().x(), local.min().y(), local.max().z()),
|
||||
local.max(),
|
||||
Point3D(local.min().x(), local.max().y(), local.max().z()),
|
||||
};
|
||||
for (const auto& c : corners) {
|
||||
stats.total_bounds.expand(world_tf * c);
|
||||
}
|
||||
}
|
||||
} else if (!node.is_part() && !node.children.empty()) {
|
||||
stats.subassemblies++;
|
||||
}
|
||||
|
||||
for (const auto& child : node.children) {
|
||||
traverse(*child, world_tf, depth + 1);
|
||||
}
|
||||
};
|
||||
|
||||
traverse(assembly.root, Transform3D::Identity(), 0);
|
||||
return stats;
|
||||
}
|
||||
|
||||
} // namespace vde::brep
|
||||
Reference in New Issue
Block a user