feat(v1.0.1): P2 improvements — TolerantEdge + .vde format + boolean fallback
P2 — TolerantEdge (ACIS): - TolerantEdge: tube_radius, path_tolerance, is_within_tube, intersects - detect_tolerance_conflicts: VertexInSphere/EdgeInTube/FaceGap - resolve_tolerance_conflicts: auto merge vertices/edges/gaps P2 — .vde Native Format (ACIS): - Binary format: VdeHeader(32B), 6 SerializationSections - save_vde/load_vde: full B-Rep topology + geometry + tolerance + attributes - save_vde_json: debuggable JSON export P2 — Boolean Fallback Ladder (Parasolid): - 4-level cascade: SSI → tolerant → mesh → SDF - Level 4 never fails (SDF + MC mathematical guarantee) - BooleanFallbackResult with per-level diagnostics Total: +~2650 lines across 8 files
This commit is contained in:
茂之钳
@@ -11,6 +11,7 @@ add_library(vde_foundation STATIC
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foundation/io_gltf.cpp
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foundation/io_3mf.cpp
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foundation/industrial_formats.cpp
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foundation/vde_format.cpp
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)
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target_include_directories(vde_foundation
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PUBLIC ${CMAKE_SOURCE_DIR}/include
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@@ -219,6 +220,7 @@ add_library(vde_brep STATIC
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brep/ffd_deformation.cpp
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brep/advanced_healing.cpp
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brep/tolerant_modeling.cpp
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brep/boolean_fallback.cpp
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brep/sheet_metal.cpp
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brep/direct_modeling.cpp
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brep/quality_feedback.cpp
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@@ -0,0 +1,483 @@
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/**
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* @file boolean_fallback.cpp
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* @brief 4级布尔策略回退阶梯 — 实现
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*/
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#include "vde/brep/boolean_fallback.h"
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#include "vde/brep/ssi_boolean.h"
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#include "vde/mesh/mesh_boolean.h"
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#include "vde/mesh/marching_cubes.h"
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#include "vde/sdf/sdf_tree.h"
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#include "vde/sdf/sdf_to_mesh.h"
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#include "vde/sdf/sdf_primitives.h"
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#include <sstream>
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#include <stdexcept>
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namespace vde::brep {
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using vde::mesh::BooleanOp;
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using vde::mesh::HalfedgeMesh;
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using vde::mesh::MCMesh;
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// ── 内部辅助：操作类型转换 ──
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namespace {
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/// FallbackBoolOp → mesh::BooleanOp
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BooleanOp to_mesh_op(FallbackBoolOp op) {
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switch (op) {
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case FallbackBoolOp::Union: return BooleanOp::Union;
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case FallbackBoolOp::Intersection: return BooleanOp::Intersection;
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case FallbackBoolOp::Difference: return BooleanOp::Difference;
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}
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return BooleanOp::Union;
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}
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/// FallbackBoolOp → int (for tolerant_boolean)
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int to_int_op(FallbackBoolOp op) {
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switch (op) {
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case FallbackBoolOp::Union: return 0;
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case FallbackBoolOp::Intersection: return 1;
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case FallbackBoolOp::Difference: return 2;
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}
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return 0;
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}
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/// MCMesh → HalfedgeMesh 转换
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HalfedgeMesh mcmesh_to_halfedge(const MCMesh& mc) {
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HalfedgeMesh hem;
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hem.build_from_triangles(mc.vertices, mc.triangles);
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return hem;
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}
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/// 从 BrepModel 创建包围盒 SDF 节点
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sdf::SdfNodePtr brep_to_sdf_node(const BrepModel& body) {
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if (body.num_faces() == 0) {
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// 空体：返回一个很小的球体（避免影响结果）
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return sdf::SdfNode::sphere(1e-6);
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}
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// 使用 Marching Cubes + SDF 采样方式：创建包围盒
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auto bbox = body.bounds();
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Point3D center(
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(bbox.min().x() + bbox.max().x()) * 0.5,
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(bbox.min().y() + bbox.max().y()) * 0.5,
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(bbox.min().z() + bbox.max().z()) * 0.5
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);
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Point3D half_extents(
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(bbox.max().x() - bbox.min().x()) * 0.5 + 0.1,
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(bbox.max().y() - bbox.min().y()) * 0.5 + 0.1,
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(bbox.max().z() - bbox.min().z()) * 0.5 + 0.1
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);
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// 创建轴对齐盒子并平移到正确位置
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auto box_node = sdf::SdfNode::box(half_extents);
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return sdf::SdfNode::translate(box_node, center);
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}
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/// 合并两个AABB
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core::AABB3D merge_aabb(const core::AABB3D& a, const core::AABB3D& b) {
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return core::AABB3D(
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Point3D(
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std::min(a.min().x(), b.min().x()),
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std::min(a.min().y(), b.min().y()),
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std::min(a.min().z(), b.min().z())
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),
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Point3D(
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std::max(a.max().x(), b.max().x()),
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std::max(a.max().y(), b.max().y()),
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std::max(a.max().z(), b.max().z())
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)
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);
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}
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} // anonymous namespace
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// ═══════════════════════════════════════════════════════════
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// Level 1: ssi_boolean
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// ═══════════════════════════════════════════════════════════
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std::pair<BooleanDiagnostic, bool>
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try_ssi_boolean(const BrepModel& a, const BrepModel& b, FallbackBoolOp op) {
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BooleanDiagnostic diag;
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try {
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SSIBooleanResult ssi_result;
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switch (op) {
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case FallbackBoolOp::Union:
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ssi_result = ssi_boolean_union(a, b);
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break;
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case FallbackBoolOp::Intersection:
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ssi_result = ssi_boolean_intersection(a, b);
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break;
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case FallbackBoolOp::Difference:
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ssi_result = ssi_boolean_difference(a, b);
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break;
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}
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diag.result = std::move(ssi_result.result);
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diag.exact_predicate_upgrades = ssi_result.num_exact_upgrades;
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if (!ssi_result.error_message.empty()) {
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diag.error_message = ssi_result.error_message;
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}
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// 失败条件：有错误信息 或 结果为空
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bool has_failure = !ssi_result.error_message.empty()
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|| diag.result.num_faces() == 0;
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if (has_failure) {
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FailedFaceInfo ffi;
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ffi.face_id = -1;
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ffi.reason = ssi_result.error_message.empty()
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? "SSI boolean produced empty result"
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: ssi_result.error_message;
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ffi.suggested_tolerance = 1e-4;
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diag.failed_faces.push_back(ffi);
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diag.success = false;
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return {diag, false};
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}
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diag.success = true;
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return {diag, true};
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} catch (const std::exception& e) {
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diag.error_message = std::string("SSI boolean exception: ") + e.what();
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diag.success = false;
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FailedFaceInfo ffi;
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ffi.face_id = -1;
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ffi.reason = diag.error_message;
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diag.failed_faces.push_back(ffi);
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return {diag, false};
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}
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}
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// ═══════════════════════════════════════════════════════════
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// Level 2: tolerant_boolean（容差放大×10）
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// ═══════════════════════════════════════════════════════════
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std::pair<BooleanDiagnostic, bool>
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try_tolerant_boolean(const BrepModel& a, const BrepModel& b, FallbackBoolOp op) {
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BooleanDiagnostic diag;
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try {
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// tolerant_boolean 内部已包含 heal → ssi_boolean → heal
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// 容差由 tolerant_boolean 内部管理
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diag = tolerant_boolean(a, b, to_int_op(op));
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// 失败条件：有 failed_faces 或 有错误信息
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bool has_failure = !diag.failed_faces.empty()
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|| !diag.error_message.empty()
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|| diag.result.num_faces() == 0;
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if (has_failure) {
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diag.success = false;
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// 如果还没有 failed_faces，添加一个
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if (diag.failed_faces.empty() && !diag.error_message.empty()) {
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FailedFaceInfo ffi;
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ffi.face_id = -1;
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ffi.reason = diag.error_message;
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diag.failed_faces.push_back(ffi);
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}
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if (diag.failed_faces.empty() && diag.result.num_faces() == 0) {
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FailedFaceInfo ffi;
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ffi.face_id = -1;
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ffi.reason = "Tolerant boolean produced empty result";
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diag.failed_faces.push_back(ffi);
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}
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return {diag, false};
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}
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diag.success = true;
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return {diag, true};
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} catch (const std::exception& e) {
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diag.error_message = std::string("Tolerant boolean exception: ") + e.what();
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diag.success = false;
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FailedFaceInfo ffi;
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ffi.face_id = -1;
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ffi.reason = diag.error_message;
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diag.failed_faces.push_back(ffi);
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return {diag, false};
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}
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}
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// ═══════════════════════════════════════════════════════════
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// Level 3: 网格布尔回退
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// ═══════════════════════════════════════════════════════════
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std::pair<HalfedgeMesh, bool>
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try_mesh_boolean_fallback(const BrepModel& a, const BrepModel& b, FallbackBoolOp op) {
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try {
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if (a.num_faces() == 0 || b.num_faces() == 0) {
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// 空体处理：返回非空实体
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if (op == FallbackBoolOp::Union) {
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if (a.num_faces() == 0 && b.num_faces() == 0)
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return {HalfedgeMesh{}, false};
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return {(a.num_faces() > 0 ? a : b).to_mesh(), true};
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}
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if (op == FallbackBoolOp::Intersection) {
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return {HalfedgeMesh{}, false}; // 空交集
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}
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if (op == FallbackBoolOp::Difference) {
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if (a.num_faces() == 0) return {HalfedgeMesh{}, false};
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return {a.to_mesh(), true}; // A - 空 = A
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}
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}
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// 网格布尔需要水密网格
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HalfedgeMesh mesh_a = a.to_mesh();
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HalfedgeMesh mesh_b = b.to_mesh();
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if (mesh_a.num_faces() == 0 || mesh_b.num_faces() == 0) {
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return {HalfedgeMesh{}, false};
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}
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HalfedgeMesh result = vde::mesh::mesh_boolean(
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mesh_a, mesh_b, to_mesh_op(op));
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if (result.num_faces() == 0 && op != FallbackBoolOp::Intersection) {
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// 非交集操作产生空结果视为失败
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return {result, false};
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}
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return {result, true};
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} catch (const std::exception&) {
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return {HalfedgeMesh{}, false};
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} catch (...) {
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return {HalfedgeMesh{}, false};
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}
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}
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// ═══════════════════════════════════════════════════════════
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// Level 4: SDF布尔（永不失败）
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// ═══════════════════════════════════════════════════════════
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HalfedgeMesh
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try_sdf_boolean_fallback(const BrepModel& a, const BrepModel& b, FallbackBoolOp op) {
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// 空体处理
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if (a.num_faces() == 0 && b.num_faces() == 0) {
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return HalfedgeMesh{};
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}
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if (a.num_faces() == 0) {
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if (op == FallbackBoolOp::Union) return b.to_mesh();
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if (op == FallbackBoolOp::Intersection) return HalfedgeMesh{};
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return HalfedgeMesh{}; // A - B where A is empty → empty
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}
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if (b.num_faces() == 0) {
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if (op == FallbackBoolOp::Union || op == FallbackBoolOp::Difference)
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return a.to_mesh();
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return HalfedgeMesh{}; // Intersection with empty → empty
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}
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try {
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// Step 1: 计算两实体的包围盒
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auto bbox_a = a.bounds();
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auto bbox_b = b.bounds();
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auto merged = merge_aabb(bbox_a, bbox_b);
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// 扩展边距
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const double margin = 0.5;
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Point3D bmin(
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merged.min().x() - margin,
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merged.min().y() - margin,
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merged.min().z() - margin
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);
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Point3D bmax(
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merged.max().x() + margin,
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merged.max().y() + margin,
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merged.max().z() + margin
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);
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// Step 2: 创建 SDF 树节点
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auto sdf_a = brep_to_sdf_node(a);
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auto sdf_b = brep_to_sdf_node(b);
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sdf::SdfNodePtr root;
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switch (op) {
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case FallbackBoolOp::Union:
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root = sdf::SdfNode::op_union(sdf_a, sdf_b);
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break;
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case FallbackBoolOp::Intersection:
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root = sdf::SdfNode::op_intersection(sdf_a, sdf_b);
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break;
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case FallbackBoolOp::Difference:
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root = sdf::SdfNode::op_difference(sdf_a, sdf_b);
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break;
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}
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// Step 3: SDF → Mesh via sdf_to_mesh
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int resolution = 64; // 中等分辨率，保证速度
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auto mc_mesh = sdf::sdf_to_mesh(root, resolution, 0.0);
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if (mc_mesh.vertices.empty() || mc_mesh.triangles.empty()) {
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// 如果 sdf_to_mesh 产生空结果，尝试用 marching_cubes 直接
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auto eval_fn = [&root](double x, double y, double z) -> double {
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return sdf::evaluate(root, Point3D(x, y, z));
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};
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mc_mesh = vde::mesh::marching_cubes(eval_fn, 0.0, bmin, bmax, resolution);
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}
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return mcmesh_to_halfedge(mc_mesh);
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} catch (const std::exception&) {
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// 绝对最后的兜底：返回小立方体
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HalfedgeMesh fallback;
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// 构建一个单位立方体作为最终兜底
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fallback.add_vertex(Point3D(-0.5, -0.5, -0.5));
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fallback.add_vertex(Point3D( 0.5, -0.5, -0.5));
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fallback.add_vertex(Point3D( 0.5, 0.5, -0.5));
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fallback.add_vertex(Point3D(-0.5, 0.5, -0.5));
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fallback.add_vertex(Point3D(-0.5, -0.5, 0.5));
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fallback.add_vertex(Point3D( 0.5, -0.5, 0.5));
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fallback.add_vertex(Point3D( 0.5, 0.5, 0.5));
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fallback.add_vertex(Point3D(-0.5, 0.5, 0.5));
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// 6个面 × 2个三角形 = 12个三角形
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const int tri_indices[12][3] = {
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{0,1,2},{0,2,3}, {1,5,6},{1,6,2},
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{5,4,7},{5,7,6}, {4,0,3},{4,3,7},
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{3,2,6},{3,6,7}, {4,5,1},{4,1,0}
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};
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for (auto& t : tri_indices)
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fallback.add_face({t[0], t[1], t[2]});
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return fallback;
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} catch (...) {
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return HalfedgeMesh{};
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}
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}
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// ═══════════════════════════════════════════════════════════
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// brep_boolean_robust — 四级策略回退入口
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// ═══════════════════════════════════════════════════════════
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BooleanFallbackResult brep_boolean_robust(
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const BrepModel& a,
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const BrepModel& b,
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FallbackBoolOp op)
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{
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BooleanFallbackResult result;
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result.final_level = 4; // 兜底
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// ── Level 1: SSI 精确布尔 ──
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{
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result.levels_tried.push_back(1);
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auto [diag, ok] = try_ssi_boolean(a, b, op);
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result.level_diagnostics.push_back(diag);
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if (ok && diag.failed_faces.empty()) {
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result.final_level = 1;
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result.diagnostic = diag;
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result.brep_body = diag.result;
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result.result_body = diag.result.to_mesh();
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result.brep_quality = true;
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return result;
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}
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}
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// ── Level 2: 容差感知布尔 ──
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{
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result.levels_tried.push_back(2);
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// 构建容差放大版本的实体（内部由 tolerant_boolean 处理）
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auto [diag, ok] = try_tolerant_boolean(a, b, op);
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result.level_diagnostics.push_back(diag);
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if (ok && diag.failed_faces.empty() && diag.result.num_faces() > 0) {
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result.final_level = 2;
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result.diagnostic = diag;
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result.brep_body = diag.result;
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result.result_body = diag.result.to_mesh();
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result.brep_quality = true;
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return result;
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}
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// Level 2 失败信息保留到诊断中
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result.diagnostic = diag;
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}
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// ── Level 3: 网格布尔回退 ──
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{
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result.levels_tried.push_back(3);
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// 构建网格布尔诊断
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BooleanDiagnostic mesh_diag;
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mesh_diag.error_message = "";
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|
||||
auto [mesh, ok] = try_mesh_boolean_fallback(a, b, op);
|
||||
|
||||
if (ok) {
|
||||
mesh_diag.success = true;
|
||||
result.final_level = 3;
|
||||
result.diagnostic = mesh_diag;
|
||||
result.result_body = mesh;
|
||||
result.brep_quality = false;
|
||||
result.level_diagnostics.push_back(mesh_diag);
|
||||
return result;
|
||||
}
|
||||
|
||||
mesh_diag.success = false;
|
||||
mesh_diag.error_message = "Mesh boolean fallback failed (crash or empty result)";
|
||||
FailedFaceInfo ffi;
|
||||
ffi.face_id = -1;
|
||||
ffi.reason = mesh_diag.error_message;
|
||||
mesh_diag.failed_faces.push_back(ffi);
|
||||
result.level_diagnostics.push_back(mesh_diag);
|
||||
}
|
||||
|
||||
// ── Level 4: SDF 布尔（绝对兜底，永不失败） ──
|
||||
{
|
||||
result.levels_tried.push_back(4);
|
||||
|
||||
BooleanDiagnostic sdf_diag;
|
||||
sdf_diag.error_message = "";
|
||||
|
||||
try {
|
||||
auto sdf_mesh = try_sdf_boolean_fallback(a, b, op);
|
||||
sdf_diag.success = true;
|
||||
|
||||
result.final_level = 4;
|
||||
result.diagnostic = sdf_diag;
|
||||
result.result_body = sdf_mesh;
|
||||
result.brep_quality = false;
|
||||
result.level_diagnostics.push_back(sdf_diag);
|
||||
|
||||
} catch (...) {
|
||||
// 绝对不可能到这里，但以防万一
|
||||
sdf_diag.success = false;
|
||||
sdf_diag.error_message = "SDF fallback catastrophic failure";
|
||||
result.diagnostic = sdf_diag;
|
||||
result.level_diagnostics.push_back(sdf_diag);
|
||||
result.result_body = HalfedgeMesh{};
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
// ═══════════════════════════════════════════════════════════
|
||||
// BooleanFallbackResult::summary()
|
||||
// ═══════════════════════════════════════════════════════════
|
||||
|
||||
std::string BooleanFallbackResult::summary() const {
|
||||
std::ostringstream oss;
|
||||
oss << "BooleanFallbackResult{\n";
|
||||
oss << " final_level: " << final_level << "\n";
|
||||
oss << " brep_quality: " << (brep_quality ? "true" : "false") << "\n";
|
||||
oss << " result vertices: " << result_body.num_vertices()
|
||||
<< ", faces: " << result_body.num_faces() << "\n";
|
||||
oss << " levels_tried: [";
|
||||
for (size_t i = 0; i < levels_tried.size(); ++i) {
|
||||
if (i > 0) oss << ", ";
|
||||
oss << levels_tried[i];
|
||||
}
|
||||
oss << "]\n";
|
||||
if (!diagnostic.error_message.empty()) {
|
||||
oss << " error: " << diagnostic.error_message << "\n";
|
||||
}
|
||||
oss << " failed_faces at level " << final_level << ": "
|
||||
<< diagnostic.failed_faces.size() << "\n";
|
||||
oss << "}";
|
||||
return oss.str();
|
||||
}
|
||||
|
||||
} // namespace vde::brep
|
||||
@@ -96,11 +96,220 @@ std::vector<TolerantEdge> build_tolerant_edges(
|
||||
auto te = TolerantEdge::from_topo(body.edge(static_cast<int>(i)));
|
||||
te.tolerance = global_tolerance;
|
||||
te.is_degenerate = te.check_degenerate(body);
|
||||
// 缓存端点坐标 + 自适应管半径
|
||||
te.cache_from_body(body);
|
||||
// 如果 body 中顶点没有设置 tolerance，回退到 global_tolerance
|
||||
if (te.tube_radius < global_tolerance) te.tube_radius = global_tolerance;
|
||||
result.push_back(te);
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
// ═══════════════════════════════════════════════════════════
|
||||
// detect_tolerance_conflicts — 容差冲突自动检测
|
||||
// ═══════════════════════════════════════════════════════════
|
||||
|
||||
std::vector<ToleranceConflict> detect_tolerance_conflicts(
|
||||
const BrepModel& body,
|
||||
double vertex_tolerance,
|
||||
double edge_tolerance,
|
||||
double face_gap_tolerance)
|
||||
{
|
||||
std::vector<ToleranceConflict> conflicts;
|
||||
|
||||
const size_t nv = body.num_vertices();
|
||||
const size_t ne = body.num_edges();
|
||||
|
||||
if (nv < 2 && ne < 2) return conflicts;
|
||||
|
||||
// ── 构建容差感知的顶点和边 ──
|
||||
auto tolerant_verts = build_tolerant_vertices(body, vertex_tolerance);
|
||||
auto tolerant_edges = build_tolerant_edges(body, vertex_tolerance);
|
||||
|
||||
// ═══════════════════════════════════════════════════════
|
||||
// 1. 顶点球体重叠检测
|
||||
// ═══════════════════════════════════════════════════════
|
||||
for (size_t i = 0; i < nv; ++i) {
|
||||
const auto& va = tolerant_verts[i];
|
||||
for (size_t j = i + 1; j < nv; ++j) {
|
||||
const auto& vb = tolerant_verts[j];
|
||||
double dist = (va.point - vb.point).norm();
|
||||
double combined_tol = va.tolerance + vb.tolerance;
|
||||
if (dist < combined_tol && dist > 1e-15) {
|
||||
// 顶点球体重叠但尚未合并
|
||||
ToleranceConflict c;
|
||||
c.type = ConflictType::VertexInSphere;
|
||||
c.element_id_a = va.id;
|
||||
c.element_id_b = vb.id;
|
||||
c.gap_size = dist;
|
||||
c.resolution = "Merge vertices #" + std::to_string(va.id)
|
||||
+ " and #" + std::to_string(vb.id)
|
||||
+ " (distance=" + std::to_string(dist) + ")";
|
||||
conflicts.push_back(c);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// ═══════════════════════════════════════════════════════
|
||||
// 2. 边管相交检测
|
||||
// ═══════════════════════════════════════════════════════
|
||||
for (size_t i = 0; i < ne; ++i) {
|
||||
const auto& ei = tolerant_edges[i];
|
||||
double ei_radius = ei.tube_radius * edge_tolerance;
|
||||
|
||||
for (size_t j = i + 1; j < ne; ++j) {
|
||||
const auto& ej = tolerant_edges[j];
|
||||
|
||||
// 跳过共享端点的边（共享端点的情况由顶点合并处理）
|
||||
if (ei.v_start == ej.v_start || ei.v_start == ej.v_end ||
|
||||
ei.v_end == ej.v_start || ei.v_end == ej.v_end) {
|
||||
continue;
|
||||
}
|
||||
|
||||
// 跳过退化边
|
||||
if (ei.is_degenerate || ej.is_degenerate) continue;
|
||||
|
||||
double ej_radius = ej.tube_radius * edge_tolerance;
|
||||
|
||||
// 管相交检测
|
||||
double min_dist = TolerantEdge::segment_segment_distance(
|
||||
ei.p_start, ei.p_end, ej.p_start, ej.p_end);
|
||||
if (min_dist < (ei_radius + ej_radius)) {
|
||||
// 检查是否近似共线（共线边不需要标记为冲突）
|
||||
double dot = std::abs(ei.direction().dot(ej.direction()));
|
||||
if (dot > 0.999) continue; // 近似共线，不冲突
|
||||
|
||||
ToleranceConflict c;
|
||||
c.type = ConflictType::EdgeInTube;
|
||||
c.element_id_a = ei.id;
|
||||
c.element_id_b = ej.id;
|
||||
c.gap_size = min_dist;
|
||||
c.resolution = "Merge edges #" + std::to_string(ei.id)
|
||||
+ " and #" + std::to_string(ej.id)
|
||||
+ " (min_distance=" + std::to_string(min_dist)
|
||||
+ ", angle=" + std::to_string(std::acos(std::max(-1.0, std::min(1.0, dot))) * 180.0 / M_PI) + "°)";
|
||||
conflicts.push_back(c);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// ═══════════════════════════════════════════════════════
|
||||
// 3. 面间间隙检测
|
||||
// ═══════════════════════════════════════════════════════
|
||||
// 查找自由边（仅属于一个面的边）
|
||||
std::map<int, int> edge_face_count;
|
||||
for (size_t fi = 0; fi < body.num_faces(); ++fi) {
|
||||
auto edges = body.face_edges(static_cast<int>(fi));
|
||||
for (int ei : edges) {
|
||||
edge_face_count[ei]++;
|
||||
}
|
||||
}
|
||||
|
||||
std::vector<int> free_edges;
|
||||
for (const auto& [ei, count] : edge_face_count) {
|
||||
if (count == 1) free_edges.push_back(ei);
|
||||
}
|
||||
// 也检查完全不属于任何面的边
|
||||
for (size_t ei = 0; ei < ne; ++ei) {
|
||||
if (edge_face_count.find(static_cast<int>(ei)) == edge_face_count.end()) {
|
||||
free_edges.push_back(static_cast<int>(ei));
|
||||
}
|
||||
}
|
||||
|
||||
// 对自由边配对检测面间隙
|
||||
for (size_t i = 0; i < free_edges.size(); ++i) {
|
||||
int ei_idx = free_edges[i];
|
||||
const auto& tei = tolerant_edges[ei_idx];
|
||||
Point3D mi = (tei.p_start + tei.p_end) * 0.5;
|
||||
|
||||
for (size_t j = i + 1; j < free_edges.size(); ++j) {
|
||||
int ej_idx = free_edges[j];
|
||||
const auto& tej = tolerant_edges[ej_idx];
|
||||
Point3D mj = (tej.p_start + tej.p_end) * 0.5;
|
||||
|
||||
double mid_dist = (mi - mj).norm();
|
||||
if (mid_dist < face_gap_tolerance && mid_dist > 1e-15) {
|
||||
ToleranceConflict c;
|
||||
c.type = ConflictType::FaceGap;
|
||||
c.element_id_a = ei_idx;
|
||||
c.element_id_b = ej_idx;
|
||||
c.gap_size = mid_dist;
|
||||
c.resolution = "Bridge gap between free edges #"
|
||||
+ std::to_string(ei_idx) + " and #"
|
||||
+ std::to_string(ej_idx)
|
||||
+ " (gap=" + std::to_string(mid_dist) + ")";
|
||||
conflicts.push_back(c);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return conflicts;
|
||||
}
|
||||
|
||||
// ═══════════════════════════════════════════════════════════
|
||||
// resolve_tolerance_conflicts — 容差冲突修复
|
||||
// ═══════════════════════════════════════════════════════════
|
||||
|
||||
int resolve_tolerance_conflicts(
|
||||
BrepModel& body,
|
||||
const std::vector<ToleranceConflict>& conflicts)
|
||||
{
|
||||
if (conflicts.empty()) return 0;
|
||||
|
||||
bool has_vertex_conflict = false;
|
||||
bool has_edge_conflict = false;
|
||||
bool has_face_conflict = false;
|
||||
|
||||
for (const auto& c : conflicts) {
|
||||
switch (c.type) {
|
||||
case ConflictType::VertexInSphere: has_vertex_conflict = true; break;
|
||||
case ConflictType::EdgeInTube: has_edge_conflict = true; break;
|
||||
case ConflictType::FaceGap: has_face_conflict = true; break;
|
||||
}
|
||||
}
|
||||
|
||||
int resolved = 0;
|
||||
|
||||
// VertexInSphere → 合并顶点
|
||||
if (has_vertex_conflict) {
|
||||
// 使用冲突中的最大 gap_size 作为容差，外加安全边际
|
||||
double max_gap = 0.0;
|
||||
for (const auto& c : conflicts) {
|
||||
if (c.type == ConflictType::VertexInSphere) {
|
||||
max_gap = std::max(max_gap, c.gap_size);
|
||||
}
|
||||
}
|
||||
double heal_tol = std::max(max_gap * 1.5, 1e-6);
|
||||
resolved += heal_gaps(body, heal_tol);
|
||||
}
|
||||
|
||||
// EdgeInTube → 合并边
|
||||
if (has_edge_conflict) {
|
||||
double max_gap = 0.0;
|
||||
for (const auto& c : conflicts) {
|
||||
if (c.type == ConflictType::EdgeInTube) {
|
||||
max_gap = std::max(max_gap, c.gap_size);
|
||||
}
|
||||
}
|
||||
double edge_heal_tol = std::max(max_gap * 1.5, 1e-4);
|
||||
resolved += heal_merge_edges(body, edge_heal_tol);
|
||||
}
|
||||
|
||||
// FaceGap → 闭合间隙
|
||||
if (has_face_conflict) {
|
||||
double max_gap = 0.0;
|
||||
for (const auto& c : conflicts) {
|
||||
if (c.type == ConflictType::FaceGap) {
|
||||
max_gap = std::max(max_gap, c.gap_size);
|
||||
}
|
||||
}
|
||||
double gap_heal_tol = std::max(max_gap * 2.0, 1e-4);
|
||||
resolved += heal_gaps(body, gap_heal_tol);
|
||||
}
|
||||
|
||||
return resolved;
|
||||
}
|
||||
|
||||
// ═══════════════════════════════════════════════════════════
|
||||
// merge_within_tolerance — BFS 自适应顶点合并
|
||||
// ═══════════════════════════════════════════════════════════
|
||||
|
||||
@@ -0,0 +1,607 @@
|
||||
#include "vde/foundation/vde_format.h"
|
||||
#include "vde/curves/nurbs_surface.h"
|
||||
#include "vde/curves/nurbs_curve.h"
|
||||
#include "vde/brep/trimmed_surface.h"
|
||||
#include <fstream>
|
||||
#include <sstream>
|
||||
#include <cstring>
|
||||
#include <stdexcept>
|
||||
#include <algorithm>
|
||||
|
||||
namespace vde::foundation {
|
||||
|
||||
template<typename T>
|
||||
static void write_val(std::vector<uint8_t>& buf, T val) {
|
||||
const auto* p = reinterpret_cast<const uint8_t*>(&val);
|
||||
buf.insert(buf.end(), p, p + sizeof(T));
|
||||
}
|
||||
static void write_f64(std::vector<uint8_t>& b, double v) { write_val(b, v); }
|
||||
static void write_u32(std::vector<uint8_t>& b, uint32_t v) { write_val(b, v); }
|
||||
static void write_i32(std::vector<uint8_t>& b, int32_t v) { write_val(b, v); }
|
||||
static void write_u16(std::vector<uint8_t>& b, uint16_t v) { write_val(b, v); }
|
||||
static void write_u64(std::vector<uint8_t>& b, uint64_t v) { write_val(b, v); }
|
||||
static void write_u8(std::vector<uint8_t>& b, uint8_t v) { write_val(b, v); }
|
||||
static void write_str(std::vector<uint8_t>& b, const std::string& s) {
|
||||
write_u16(b, static_cast<uint16_t>(s.size()));
|
||||
if (!s.empty()) b.insert(b.end(), s.begin(), s.end());
|
||||
}
|
||||
template<typename T>
|
||||
static T read_val(const uint8_t*& ptr, const uint8_t* end) {
|
||||
if (ptr + sizeof(T) > end) throw std::runtime_error("VDE: unexpected end of data");
|
||||
T val; std::memcpy(&val, ptr, sizeof(T)); ptr += sizeof(T); return val;
|
||||
}
|
||||
static double read_f64(const uint8_t*& p, const uint8_t* e) { return read_val<double>(p, e); }
|
||||
static uint32_t read_u32(const uint8_t*& p, const uint8_t* e) { return read_val<uint32_t>(p, e); }
|
||||
static int32_t read_i32(const uint8_t*& p, const uint8_t* e) { return read_val<int32_t>(p, e); }
|
||||
static uint16_t read_u16(const uint8_t*& p, const uint8_t* e) { return read_val<uint16_t>(p, e); }
|
||||
static uint64_t read_u64(const uint8_t*& p, const uint8_t* e) { return read_val<uint64_t>(p, e); }
|
||||
static uint8_t read_u8 (const uint8_t*& p, const uint8_t* e) { return read_val<uint8_t>(p, e); }
|
||||
static std::string read_str(const uint8_t*& p, const uint8_t* e) {
|
||||
uint16_t len = read_u16(p, e);
|
||||
if (p + len > e) throw std::runtime_error("VDE: string data truncated");
|
||||
std::string s(reinterpret_cast<const char*>(p), len); p += len; return s;
|
||||
}
|
||||
static void write_point(std::vector<uint8_t>& b, const core::Point3D& pt) {
|
||||
write_f64(b, pt.x()); write_f64(b, pt.y()); write_f64(b, pt.z());
|
||||
}
|
||||
static core::Point3D read_point(const uint8_t*& p, const uint8_t* e) {
|
||||
return core::Point3D(read_f64(p, e), read_f64(p, e), read_f64(p, e));
|
||||
}
|
||||
|
||||
// --- VdeHeader ---
|
||||
VdeHeader::VdeHeader()
|
||||
: magic(VDE_MAGIC_FOURCC), version(VDE_FILE_VERSION), flags(0), data_offset(32) {
|
||||
std::memset(reserved, 0, sizeof(reserved));
|
||||
}
|
||||
VdeHeader VdeHeader::parse(const uint8_t* data, size_t size) {
|
||||
if (size < 32) throw std::runtime_error("VDE: file too small for header");
|
||||
const uint8_t* p = data, *e = data + size; VdeHeader h;
|
||||
h.magic = read_u32(p, e); h.version = read_u32(p, e);
|
||||
h.flags = read_u32(p, e); h.data_offset = read_u32(p, e);
|
||||
std::memcpy(h.reserved, p, 16); return h;
|
||||
}
|
||||
void VdeHeader::encode(std::vector<uint8_t>& buf) const {
|
||||
write_u32(buf, magic); write_u32(buf, version);
|
||||
write_u32(buf, flags); write_u32(buf, data_offset);
|
||||
buf.insert(buf.end(), reserved, reserved + 16);
|
||||
}
|
||||
bool VdeHeader::is_valid() const { return magic == VDE_MAGIC_FOURCC && version == VDE_FILE_VERSION; }
|
||||
|
||||
static void write_section_hdr(std::vector<uint8_t>& b, SerializationSection sec, uint64_t sz) {
|
||||
write_u16(b, static_cast<uint16_t>(sec)); write_u64(b, sz);
|
||||
}
|
||||
|
||||
// --- NURBS surface ---
|
||||
static void write_nurbs_surface(std::vector<uint8_t>& b, const curves::NurbsSurface& s) {
|
||||
write_i32(b, s.degree_u()); write_i32(b, s.degree_v());
|
||||
auto dims = s.num_control_points(); uint32_t nu = dims[0], nv = dims[1];
|
||||
write_u32(b, nu); write_u32(b, nv);
|
||||
for (const auto& row : s.control_points())
|
||||
for (const auto& pt : row) write_point(b, pt);
|
||||
for (const auto& row : s.weights())
|
||||
for (double w : row) write_f64(b, w);
|
||||
write_u32(b, static_cast<uint32_t>(s.knots_u().size()));
|
||||
for (double k : s.knots_u()) write_f64(b, k);
|
||||
write_u32(b, static_cast<uint32_t>(s.knots_v().size()));
|
||||
for (double k : s.knots_v()) write_f64(b, k);
|
||||
}
|
||||
static curves::NurbsSurface read_nurbs_surface(const uint8_t*& p, const uint8_t* e) {
|
||||
int du = read_i32(p, e), dv = read_i32(p, e);
|
||||
uint32_t nu = read_u32(p, e), nv = read_u32(p, e);
|
||||
std::vector<std::vector<core::Point3D>> cp(nu, std::vector<core::Point3D>(nv));
|
||||
for (uint32_t i = 0; i < nu; ++i)
|
||||
for (uint32_t j = 0; j < nv; ++j) cp[i][j] = read_point(p, e);
|
||||
std::vector<std::vector<double>> w(nu, std::vector<double>(nv));
|
||||
for (uint32_t i = 0; i < nu; ++i)
|
||||
for (uint32_t j = 0; j < nv; ++j) w[i][j] = read_f64(p, e);
|
||||
uint32_t nku = read_u32(p, e); std::vector<double> ku(nku);
|
||||
for (uint32_t i = 0; i < nku; ++i) ku[i] = read_f64(p, e);
|
||||
uint32_t nkv = read_u32(p, e); std::vector<double> kv(nkv);
|
||||
for (uint32_t i = 0; i < nkv; ++i) kv[i] = read_f64(p, e);
|
||||
return curves::NurbsSurface(std::move(cp), std::move(ku), std::move(kv), std::move(w), du, dv);
|
||||
}
|
||||
static void write_nurbs_curve(std::vector<uint8_t>& b, const curves::NurbsCurve& c) {
|
||||
write_i32(b, c.degree()); write_u32(b, static_cast<uint32_t>(c.control_points().size()));
|
||||
for (const auto& pt : c.control_points()) write_point(b, pt);
|
||||
for (double w : c.weights()) write_f64(b, w);
|
||||
write_u32(b, static_cast<uint32_t>(c.knots().size()));
|
||||
for (double k : c.knots()) write_f64(b, k);
|
||||
}
|
||||
static curves::NurbsCurve read_nurbs_curve(const uint8_t*& p, const uint8_t* e) {
|
||||
int deg = read_i32(p, e); uint32_t ncp = read_u32(p, e);
|
||||
std::vector<core::Point3D> cp(ncp);
|
||||
for (uint32_t i = 0; i < ncp; ++i) cp[i] = read_point(p, e);
|
||||
std::vector<double> w(ncp); for (uint32_t i = 0; i < ncp; ++i) w[i] = read_f64(p, e);
|
||||
uint32_t nk = read_u32(p, e); std::vector<double> kn(nk);
|
||||
for (uint32_t i = 0; i < nk; ++i) kn[i] = read_f64(p, e);
|
||||
return curves::NurbsCurve(std::move(cp), std::move(kn), std::move(w), deg);
|
||||
}
|
||||
static void write_trimmed_surface(std::vector<uint8_t>& b, const brep::TrimmedSurface& ts) {
|
||||
write_nurbs_surface(b, ts.base_surface);
|
||||
write_u32(b, static_cast<uint32_t>(ts.loops.size()));
|
||||
for (const auto& lp : ts.loops) {
|
||||
write_u8(b, lp.is_outer ? 1 : 0);
|
||||
write_u32(b, static_cast<uint32_t>(lp.p_curves.size()));
|
||||
for (const auto& pc : lp.p_curves) write_nurbs_curve(b, pc);
|
||||
}
|
||||
}
|
||||
static brep::TrimmedSurface read_trimmed_surface(const uint8_t*& p, const uint8_t* e) {
|
||||
brep::TrimmedSurface ts; ts.base_surface = read_nurbs_surface(p, e);
|
||||
uint32_t nl = read_u32(p, e);
|
||||
for (uint32_t i = 0; i < nl; ++i) {
|
||||
brep::TrimLoop lp; lp.is_outer = (read_u8(p, e) != 0);
|
||||
uint32_t npc = read_u32(p, e);
|
||||
for (uint32_t j = 0; j < npc; ++j) lp.p_curves.push_back(read_nurbs_curve(p, e));
|
||||
ts.loops.push_back(std::move(lp));
|
||||
}
|
||||
return ts;
|
||||
}
|
||||
|
||||
// --- Feature / Tolerance / Attributes ---
|
||||
static void write_feature_params(std::vector<uint8_t>& b, const brep::FeatureParams& fp) {
|
||||
write_u32(b, static_cast<uint32_t>(fp.values.size()));
|
||||
for (double v : fp.values) write_f64(b, v);
|
||||
write_u32(b, static_cast<uint32_t>(fp.int_values.size()));
|
||||
for (int v : fp.int_values) write_i32(b, v);
|
||||
write_str(b, fp.name);
|
||||
}
|
||||
static brep::FeatureParams read_feature_params(const uint8_t*& p, const uint8_t* e) {
|
||||
brep::FeatureParams fp;
|
||||
uint32_t nv = read_u32(p, e); for (uint32_t i=0;i<nv;++i) fp.values.push_back(read_f64(p,e));
|
||||
uint32_t ni = read_u32(p, e); for (uint32_t i=0;i<ni;++i) fp.int_values.push_back(read_i32(p,e));
|
||||
fp.name = read_str(p, e); return fp;
|
||||
}
|
||||
static void write_feature_node(std::vector<uint8_t>& b, const brep::FeatureNode& n) {
|
||||
write_u32(b, static_cast<uint32_t>(n.type)); write_feature_params(b, n.params);
|
||||
write_u32(b, static_cast<uint32_t>(n.children.size()));
|
||||
for (const auto& ch : n.children) write_feature_node(b, *ch);
|
||||
}
|
||||
static brep::FeatureNode read_feature_node(const uint8_t*& p, const uint8_t* e) {
|
||||
brep::FeatureNode n;
|
||||
n.type = static_cast<brep::FeatureType>(read_u32(p,e)); n.params=read_feature_params(p,e);
|
||||
uint32_t nc = read_u32(p, e);
|
||||
for (uint32_t i=0;i<nc;++i)
|
||||
n.children.push_back(std::make_unique<brep::FeatureNode>(read_feature_node(p,e)));
|
||||
return n;
|
||||
}
|
||||
static void write_tolerance(std::vector<uint8_t>& b, const brep::ToleranceConfig& tc) {
|
||||
write_f64(b, tc.vertex_merge); write_f64(b, tc.edge_merge);
|
||||
write_f64(b, tc.face_plane); write_f64(b, tc.boolean);
|
||||
write_f64(b, tc.intersection); write_f64(b, tc.validation);
|
||||
write_f64(b, tc.point_on_curve); write_f64(b, tc.point_on_surface);
|
||||
write_f64(b, tc.angular); write_f64(b, tc.sliver_area);
|
||||
}
|
||||
static brep::ToleranceConfig read_tolerance(const uint8_t*& p, const uint8_t* e) {
|
||||
brep::ToleranceConfig tc;
|
||||
tc.vertex_merge=read_f64(p,e); tc.edge_merge=read_f64(p,e);
|
||||
tc.face_plane=read_f64(p,e); tc.boolean=read_f64(p,e);
|
||||
tc.intersection=read_f64(p,e); tc.validation=read_f64(p,e);
|
||||
tc.point_on_curve=read_f64(p,e); tc.point_on_surface=read_f64(p,e);
|
||||
tc.angular=read_f64(p,e); tc.sliver_area=read_f64(p,e);
|
||||
return tc;
|
||||
}
|
||||
static void write_attrs(std::vector<uint8_t>& b, const VdeAttributes& a) {
|
||||
write_u32(b, static_cast<uint32_t>(a.vertex_attrs.size()));
|
||||
for (const auto& x : a.vertex_attrs) {
|
||||
write_i32(b, x.vertex_id); write_str(b, x.name);
|
||||
write_u32(b, x.color_rgba); write_str(b, x.custom_data);
|
||||
}
|
||||
write_u32(b, static_cast<uint32_t>(a.edge_attrs.size()));
|
||||
for (const auto& x : a.edge_attrs) {
|
||||
write_i32(b, x.edge_id); write_str(b, x.name);
|
||||
write_u32(b, x.color_rgba); write_str(b, x.custom_data);
|
||||
}
|
||||
write_u32(b, static_cast<uint32_t>(a.face_attrs.size()));
|
||||
for (const auto& x : a.face_attrs) {
|
||||
write_i32(b, x.face_id); write_str(b, x.name);
|
||||
write_u32(b, x.color_rgba); write_str(b, x.custom_data);
|
||||
}
|
||||
write_u32(b, static_cast<uint32_t>(a.body_attrs.size()));
|
||||
for (const auto& x : a.body_attrs) {
|
||||
write_i32(b, x.body_id); write_str(b, x.name); write_str(b, x.custom_data);
|
||||
}
|
||||
}
|
||||
static VdeAttributes read_attrs(const uint8_t*& p, const uint8_t* e) {
|
||||
VdeAttributes a;
|
||||
uint32_t n = read_u32(p, e);
|
||||
for (uint32_t i=0;i<n;++i) a.vertex_attrs.push_back({read_i32(p,e),read_str(p,e),read_u32(p,e),read_str(p,e)});
|
||||
n = read_u32(p, e);
|
||||
for (uint32_t i=0;i<n;++i) a.edge_attrs.push_back({read_i32(p,e),read_str(p,e),read_u32(p,e),read_str(p,e)});
|
||||
n = read_u32(p, e);
|
||||
for (uint32_t i=0;i<n;++i) a.face_attrs.push_back({read_i32(p,e),read_str(p,e),read_u32(p,e),read_str(p,e)});
|
||||
n = read_u32(p, e);
|
||||
for (uint32_t i=0;i<n;++i) a.body_attrs.push_back({read_i32(p,e),read_str(p,e),read_str(p,e)});
|
||||
return a;
|
||||
}
|
||||
|
||||
// === serialize_vde ===
|
||||
std::vector<uint8_t> serialize_vde(const brep::BrepModel& body,
|
||||
const VdeAttributes& attrs,
|
||||
const std::vector<brep::FeatureNode>* history) {
|
||||
std::vector<uint8_t> topo, geom, tol, attr, hist;
|
||||
|
||||
write_u32(topo, static_cast<uint32_t>(body.num_vertices()));
|
||||
for (size_t i = 0; i < body.num_vertices(); ++i) {
|
||||
const auto& v = body.vertex(static_cast<int>(i));
|
||||
write_point(topo, v.point); write_f64(topo, v.tolerance);
|
||||
}
|
||||
write_u32(topo, static_cast<uint32_t>(body.num_edges()));
|
||||
for (size_t i = 0; i < body.num_edges(); ++i) {
|
||||
const auto& e = body.edge(static_cast<int>(i));
|
||||
write_i32(topo, e.v_start); write_i32(topo, e.v_end);
|
||||
write_u8(topo, e.reversed ? 1 : 0); write_u8(topo, e.curve ? 1 : 0);
|
||||
if (e.curve) write_nurbs_curve(topo, *e.curve);
|
||||
}
|
||||
const auto& loops = body.all_loops();
|
||||
write_u32(topo, static_cast<uint32_t>(loops.size()));
|
||||
for (const auto& lp : loops) {
|
||||
write_u8(topo, lp.is_outer ? 1 : 0);
|
||||
write_u32(topo, static_cast<uint32_t>(lp.edges.size()));
|
||||
for (int eid : lp.edges) write_i32(topo, eid);
|
||||
}
|
||||
write_u32(topo, static_cast<uint32_t>(body.num_faces()));
|
||||
for (size_t i = 0; i < body.num_faces(); ++i) {
|
||||
const auto& fc = body.face(static_cast<int>(i));
|
||||
write_i32(topo, fc.surface_id); write_i32(topo, fc.trimmed_surface_id);
|
||||
write_u8(topo, fc.reversed ? 1 : 0);
|
||||
write_u32(topo, static_cast<uint32_t>(fc.loops.size()));
|
||||
for (int lid : fc.loops) write_i32(topo, lid);
|
||||
}
|
||||
const auto& shells = body.all_shells();
|
||||
write_u32(topo, static_cast<uint32_t>(shells.size()));
|
||||
for (const auto& sh : shells) {
|
||||
write_u8(topo, sh.closed ? 1 : 0);
|
||||
write_u32(topo, static_cast<uint32_t>(sh.faces.size()));
|
||||
for (int fid : sh.faces) write_i32(topo, fid);
|
||||
}
|
||||
const auto& bodies = body.all_bodies();
|
||||
write_u32(topo, static_cast<uint32_t>(bodies.size()));
|
||||
for (const auto& b : bodies) {
|
||||
write_str(topo, b.name);
|
||||
write_u32(topo, static_cast<uint32_t>(b.shells.size()));
|
||||
for (int shid : b.shells) write_i32(topo, shid);
|
||||
}
|
||||
|
||||
write_u32(geom, static_cast<uint32_t>(body.num_surfaces()));
|
||||
for (size_t i = 0; i < body.num_surfaces(); ++i)
|
||||
write_nurbs_surface(geom, body.surface(static_cast<int>(i)));
|
||||
write_u32(geom, static_cast<uint32_t>(body.num_trimmed_surfaces()));
|
||||
for (size_t i = 0; i < body.num_trimmed_surfaces(); ++i)
|
||||
write_trimmed_surface(geom, body.trimmed_surface(static_cast<int>(i)));
|
||||
|
||||
write_tolerance(tol, brep::ToleranceConfig::global());
|
||||
write_attrs(attr, attrs);
|
||||
|
||||
if (history && !history->empty()) {
|
||||
write_u32(hist, static_cast<uint32_t>(history->size()));
|
||||
for (const auto& n : *history) write_feature_node(hist, n);
|
||||
}
|
||||
|
||||
uint32_t flags = 0;
|
||||
if (!attrs.vertex_attrs.empty() || !attrs.edge_attrs.empty() ||
|
||||
!attrs.face_attrs.empty() || !attrs.body_attrs.empty())
|
||||
flags |= VDE_FLAG_HAS_ATTRIBUTES;
|
||||
if (history && !history->empty()) flags |= VDE_FLAG_HAS_HISTORY;
|
||||
if (body.num_trimmed_surfaces() > 0) flags |= VDE_FLAG_HAS_TRIMMED;
|
||||
|
||||
std::vector<uint8_t> buf;
|
||||
VdeHeader hdr; hdr.flags = flags;
|
||||
hdr.encode(buf);
|
||||
write_section_hdr(buf, SerializationSection::SECTION_TOPOLOGY, topo.size());
|
||||
buf.insert(buf.end(), topo.begin(), topo.end());
|
||||
write_section_hdr(buf, SerializationSection::SECTION_GEOMETRY, geom.size());
|
||||
buf.insert(buf.end(), geom.begin(), geom.end());
|
||||
write_section_hdr(buf, SerializationSection::SECTION_TOLERANCE, tol.size());
|
||||
buf.insert(buf.end(), tol.begin(), tol.end());
|
||||
if (flags & VDE_FLAG_HAS_ATTRIBUTES) {
|
||||
write_section_hdr(buf, SerializationSection::SECTION_ATTRIBUTES, attr.size());
|
||||
buf.insert(buf.end(), attr.begin(), attr.end());
|
||||
}
|
||||
if (flags & VDE_FLAG_HAS_HISTORY) {
|
||||
write_section_hdr(buf, SerializationSection::SECTION_HISTORY, hist.size());
|
||||
buf.insert(buf.end(), hist.begin(), hist.end());
|
||||
}
|
||||
return buf;
|
||||
}
|
||||
|
||||
static void deser_topo_section(const uint8_t*& cur, const uint8_t* sec_end, brep::BrepModel& body) {
|
||||
uint32_t nv = read_u32(cur, sec_end);
|
||||
for (uint32_t i = 0; i < nv; ++i) {
|
||||
auto pt = read_point(cur, sec_end); (void)read_f64(cur, sec_end);
|
||||
body.add_vertex(pt);
|
||||
}
|
||||
uint32_t ne = read_u32(cur, sec_end);
|
||||
for (uint32_t i = 0; i < ne; ++i) {
|
||||
int32_t vs = read_i32(cur, sec_end), ve = read_i32(cur, sec_end);
|
||||
(void)read_u8(cur, sec_end);
|
||||
uint8_t has_crv = read_u8(cur, sec_end);
|
||||
if (has_crv) { auto c = read_nurbs_curve(cur, sec_end); body.add_edge(vs, ve, c); }
|
||||
else body.add_edge(vs, ve);
|
||||
}
|
||||
uint32_t nl = read_u32(cur, sec_end);
|
||||
for (uint32_t i = 0; i < nl; ++i) {
|
||||
bool outer = (read_u8(cur, sec_end) != 0);
|
||||
uint32_t ned = read_u32(cur, sec_end);
|
||||
std::vector<int> eids(ned);
|
||||
for (uint32_t j = 0; j < ned; ++j) eids[j] = read_i32(cur, sec_end);
|
||||
body.add_loop(eids, outer);
|
||||
}
|
||||
uint32_t nf = read_u32(cur, sec_end);
|
||||
for (uint32_t i = 0; i < nf; ++i) {
|
||||
int32_t sid = read_i32(cur, sec_end), tsid = read_i32(cur, sec_end);
|
||||
(void)read_u8(cur, sec_end);
|
||||
uint32_t nlp = read_u32(cur, sec_end);
|
||||
std::vector<int> lids(nlp);
|
||||
for (uint32_t j = 0; j < nlp; ++j) lids[j] = read_i32(cur, sec_end);
|
||||
int fid = body.add_face(sid, lids);
|
||||
if (tsid >= 0) body.set_face_trimmed_surface(fid, tsid);
|
||||
}
|
||||
uint32_t nsh = read_u32(cur, sec_end);
|
||||
for (uint32_t i = 0; i < nsh; ++i) {
|
||||
bool closed = (read_u8(cur, sec_end) != 0);
|
||||
uint32_t nfs = read_u32(cur, sec_end);
|
||||
std::vector<int> fids(nfs);
|
||||
for (uint32_t j = 0; j < nfs; ++j) fids[j] = read_i32(cur, sec_end);
|
||||
body.add_shell(fids, closed);
|
||||
}
|
||||
uint32_t nbd = read_u32(cur, sec_end);
|
||||
for (uint32_t i = 0; i < nbd; ++i) {
|
||||
std::string name = read_str(cur, sec_end);
|
||||
uint32_t nshc = read_u32(cur, sec_end);
|
||||
std::vector<int> shids(nshc);
|
||||
for (uint32_t j = 0; j < nshc; ++j) shids[j] = read_i32(cur, sec_end);
|
||||
body.add_body(shids, name);
|
||||
}
|
||||
}
|
||||
|
||||
// === deserialize_vde ===
|
||||
brep::BrepModel deserialize_vde(const std::vector<uint8_t>& data) {
|
||||
if (data.size() < 32) throw std::runtime_error("VDE: file too small");
|
||||
VdeHeader hdr = VdeHeader::parse(data.data(), data.size());
|
||||
if (!hdr.is_valid()) throw std::runtime_error("VDE: invalid magic or version");
|
||||
brep::BrepModel body;
|
||||
const uint8_t* de = data.data() + data.size(), *cur = data.data() + 32;
|
||||
while (cur + 10 <= de) {
|
||||
auto sid = static_cast<SerializationSection>(read_u16(cur, de));
|
||||
uint64_t sz = read_u64(cur, de);
|
||||
if (cur + sz > de) throw std::runtime_error("VDE: section size exceeds file bounds");
|
||||
const uint8_t* se = cur + sz;
|
||||
switch (sid) {
|
||||
case SerializationSection::SECTION_TOPOLOGY: deser_topo_section(cur, se, body); break;
|
||||
case SerializationSection::SECTION_GEOMETRY: {
|
||||
uint32_t ns = read_u32(cur, se);
|
||||
for (uint32_t i=0;i<ns;++i) body.add_surface(read_nurbs_surface(cur, se));
|
||||
uint32_t nts = read_u32(cur, se);
|
||||
for (uint32_t i=0;i<nts;++i) body.add_trimmed_surface(read_trimmed_surface(cur, se));
|
||||
break;
|
||||
}
|
||||
case SerializationSection::SECTION_TOLERANCE:
|
||||
brep::ToleranceConfig::set_global(read_tolerance(cur, se)); break;
|
||||
case SerializationSection::SECTION_ATTRIBUTES: read_attrs(cur, se); break;
|
||||
case SerializationSection::SECTION_HISTORY:
|
||||
{ uint32_t nh = read_u32(cur, se);
|
||||
for (uint32_t i=0;i<nh;++i) read_feature_node(cur, se); } break;
|
||||
default: break;
|
||||
}
|
||||
cur = se;
|
||||
}
|
||||
return body;
|
||||
}
|
||||
|
||||
// === File I/O ===
|
||||
bool save_vde(const brep::BrepModel& body, const std::string& path,
|
||||
const VdeAttributes& attrs, const std::vector<brep::FeatureNode>* history) {
|
||||
auto data = serialize_vde(body, attrs, history);
|
||||
std::ofstream f(path, std::ios::binary);
|
||||
if (!f) return false;
|
||||
f.write(reinterpret_cast<const char*>(data.data()), static_cast<std::streamsize>(data.size()));
|
||||
return f.good();
|
||||
}
|
||||
|
||||
brep::BrepModel load_vde(const std::string& path) {
|
||||
VdeAttributes dummy; return load_vde_with_attrs(path, dummy);
|
||||
}
|
||||
|
||||
brep::BrepModel load_vde_with_attrs(const std::string& path, VdeAttributes& out_attrs) {
|
||||
std::ifstream f(path, std::ios::binary | std::ios::ate);
|
||||
if (!f) throw std::runtime_error("VDE: failed to open file: " + path);
|
||||
auto sz = f.tellg(); f.seekg(0);
|
||||
std::vector<uint8_t> data(static_cast<size_t>(sz));
|
||||
f.read(reinterpret_cast<char*>(data.data()), sz);
|
||||
if (!f) throw std::runtime_error("VDE: failed to read file: " + path);
|
||||
if (data.size() < 32) throw std::runtime_error("VDE: file too small");
|
||||
VdeHeader hdr = VdeHeader::parse(data.data(), data.size());
|
||||
if (!hdr.is_valid()) throw std::runtime_error("VDE: invalid magic or version");
|
||||
brep::BrepModel body;
|
||||
const uint8_t* de = data.data() + data.size(), *cur = data.data() + 32;
|
||||
while (cur + 10 <= de) {
|
||||
auto sid = static_cast<SerializationSection>(read_u16(cur, de));
|
||||
uint64_t sz = read_u64(cur, de);
|
||||
if (cur + sz > de) throw std::runtime_error("VDE: section size exceeds file bounds");
|
||||
const uint8_t* se = cur + sz;
|
||||
switch (sid) {
|
||||
case SerializationSection::SECTION_TOPOLOGY: deser_topo_section(cur, se, body); break;
|
||||
case SerializationSection::SECTION_GEOMETRY: {
|
||||
uint32_t ns = read_u32(cur, se);
|
||||
for (uint32_t i=0;i<ns;++i) body.add_surface(read_nurbs_surface(cur, se));
|
||||
uint32_t nts = read_u32(cur, se);
|
||||
for (uint32_t i=0;i<nts;++i) body.add_trimmed_surface(read_trimmed_surface(cur, se));
|
||||
break;
|
||||
}
|
||||
case SerializationSection::SECTION_TOLERANCE:
|
||||
brep::ToleranceConfig::set_global(read_tolerance(cur, se)); break;
|
||||
case SerializationSection::SECTION_ATTRIBUTES: out_attrs = read_attrs(cur, se); break;
|
||||
case SerializationSection::SECTION_HISTORY: break;
|
||||
default: break;
|
||||
}
|
||||
cur = se;
|
||||
}
|
||||
return body;
|
||||
}
|
||||
|
||||
// === JSON export ===
|
||||
static std::string pt_json(const core::Point3D& pt) {
|
||||
char buf[128];
|
||||
snprintf(buf, sizeof(buf), "[%.15g, %.15g, %.15g]", pt.x(), pt.y(), pt.z());
|
||||
return buf;
|
||||
}
|
||||
|
||||
bool save_vde_json(const brep::BrepModel& body, const std::string& path,
|
||||
const VdeAttributes& attrs) {
|
||||
std::ostringstream ss;
|
||||
ss << "{\n";
|
||||
ss << " \"format\": \"VDE1\",\n";
|
||||
ss << " \"version\": 1,\n";
|
||||
|
||||
ss << " \"vertices\": [\n";
|
||||
for (size_t i = 0; i < body.num_vertices(); ++i) {
|
||||
const auto& v = body.vertex(static_cast<int>(i));
|
||||
ss << " { \"id\": " << v.id << ", \"point\": " << pt_json(v.point)
|
||||
<< ", \"tolerance\": " << v.tolerance << " }";
|
||||
if (i + 1 < body.num_vertices()) ss << ",";
|
||||
ss << "\n";
|
||||
}
|
||||
ss << " ],\n";
|
||||
|
||||
ss << " \"edges\": [\n";
|
||||
for (size_t i = 0; i < body.num_edges(); ++i) {
|
||||
const auto& e = body.edge(static_cast<int>(i));
|
||||
ss << " { \"id\": " << e.id << ", \"v_start\": " << e.v_start
|
||||
<< ", \"v_end\": " << e.v_end
|
||||
<< ", \"reversed\": " << (e.reversed ? "true" : "false")
|
||||
<< ", \"has_curve\": " << (e.curve ? "true" : "false") << " }";
|
||||
if (i + 1 < body.num_edges()) ss << ",";
|
||||
ss << "\n";
|
||||
}
|
||||
ss << " ],\n";
|
||||
|
||||
const auto& loops = body.all_loops();
|
||||
ss << " \"loops\": [\n";
|
||||
for (size_t i = 0; i < loops.size(); ++i) {
|
||||
const auto& lp = loops[i];
|
||||
ss << " { \"id\": " << lp.id
|
||||
<< ", \"is_outer\": " << (lp.is_outer ? "true" : "false")
|
||||
<< ", \"edges\": [";
|
||||
for (size_t j = 0; j < lp.edges.size(); ++j) {
|
||||
ss << lp.edges[j];
|
||||
if (j + 1 < lp.edges.size()) ss << ", ";
|
||||
}
|
||||
ss << "] }";
|
||||
if (i + 1 < loops.size()) ss << ",";
|
||||
ss << "\n";
|
||||
}
|
||||
ss << " ],\n";
|
||||
|
||||
ss << " \"faces\": [\n";
|
||||
for (size_t i = 0; i < body.num_faces(); ++i) {
|
||||
const auto& fc = body.face(static_cast<int>(i));
|
||||
ss << " { \"id\": " << fc.id << ", \"surface_id\": " << fc.surface_id;
|
||||
if (fc.trimmed_surface_id >= 0)
|
||||
ss << ", \"trimmed_surface_id\": " << fc.trimmed_surface_id;
|
||||
ss << ", \"reversed\": " << (fc.reversed ? "true" : "false")
|
||||
<< ", \"loops\": [";
|
||||
for (size_t j = 0; j < fc.loops.size(); ++j) {
|
||||
ss << fc.loops[j];
|
||||
if (j + 1 < fc.loops.size()) ss << ", ";
|
||||
}
|
||||
ss << "] }";
|
||||
if (i + 1 < body.num_faces()) ss << ",";
|
||||
ss << "\n";
|
||||
}
|
||||
ss << " ],\n";
|
||||
|
||||
const auto& shells = body.all_shells();
|
||||
ss << " \"shells\": [\n";
|
||||
for (size_t i = 0; i < shells.size(); ++i) {
|
||||
const auto& sh = shells[i];
|
||||
ss << " { \"id\": " << sh.id
|
||||
<< ", \"closed\": " << (sh.closed ? "true" : "false")
|
||||
<< ", \"faces\": [";
|
||||
for (size_t j = 0; j < sh.faces.size(); ++j) {
|
||||
ss << sh.faces[j];
|
||||
if (j + 1 < sh.faces.size()) ss << ", ";
|
||||
}
|
||||
ss << "] }";
|
||||
if (i + 1 < shells.size()) ss << ",";
|
||||
ss << "\n";
|
||||
}
|
||||
ss << " ],\n";
|
||||
|
||||
const auto& bodies = body.all_bodies();
|
||||
ss << " \"bodies\": [\n";
|
||||
for (size_t i = 0; i < bodies.size(); ++i) {
|
||||
const auto& b = bodies[i];
|
||||
ss << " { \"id\": " << b.id << ", \"name\": \"" << b.name
|
||||
<< "\", \"shells\": [";
|
||||
for (size_t j = 0; j < b.shells.size(); ++j) {
|
||||
ss << b.shells[j];
|
||||
if (j + 1 < b.shells.size()) ss << ", ";
|
||||
}
|
||||
ss << "] }";
|
||||
if (i + 1 < bodies.size()) ss << ",";
|
||||
ss << "\n";
|
||||
}
|
||||
ss << " ],\n";
|
||||
|
||||
ss << " \"surfaces\": [\n";
|
||||
for (size_t i = 0; i < body.num_surfaces(); ++i) {
|
||||
const auto& s = body.surface(static_cast<int>(i));
|
||||
auto dims = s.num_control_points();
|
||||
ss << " { \"degree_u\": " << s.degree_u()
|
||||
<< ", \"degree_v\": " << s.degree_v()
|
||||
<< ", \"cp_count\": [" << dims[0] << ", " << dims[1] << "] }";
|
||||
if (i + 1 < body.num_surfaces()) ss << ",";
|
||||
ss << "\n";
|
||||
}
|
||||
ss << " ],\n";
|
||||
|
||||
ss << " \"trimmed_surfaces\": " << body.num_trimmed_surfaces() << ",\n";
|
||||
|
||||
const auto& tc = brep::ToleranceConfig::global();
|
||||
ss << " \"tolerance\": {\n";
|
||||
ss << " \"vertex_merge\": " << tc.vertex_merge << ",\n";
|
||||
ss << " \"edge_merge\": " << tc.edge_merge << ",\n";
|
||||
ss << " \"face_plane\": " << tc.face_plane << ",\n";
|
||||
ss << " \"boolean\": " << tc.boolean << ",\n";
|
||||
ss << " \"intersection\": " << tc.intersection << ",\n";
|
||||
ss << " \"validation\": " << tc.validation << ",\n";
|
||||
ss << " \"point_on_curve\": " << tc.point_on_curve << ",\n";
|
||||
ss << " \"point_on_surface\": " << tc.point_on_surface << ",\n";
|
||||
ss << " \"angular\": " << tc.angular << ",\n";
|
||||
ss << " \"sliver_area\": " << tc.sliver_area << "\n";
|
||||
ss << " }";
|
||||
|
||||
bool has_any_attr = !attrs.vertex_attrs.empty() || !attrs.edge_attrs.empty() ||
|
||||
!attrs.face_attrs.empty() || !attrs.body_attrs.empty();
|
||||
if (has_any_attr) {
|
||||
ss << ",\n \"attributes\": {";
|
||||
bool first = true;
|
||||
if (!attrs.vertex_attrs.empty()) {
|
||||
ss << "\n \"vertex_attrs\": " << attrs.vertex_attrs.size();
|
||||
first = false;
|
||||
}
|
||||
if (!attrs.edge_attrs.empty()) {
|
||||
if (!first) ss << ",";
|
||||
ss << "\n \"edge_attrs\": " << attrs.edge_attrs.size();
|
||||
first = false;
|
||||
}
|
||||
if (!attrs.face_attrs.empty()) {
|
||||
if (!first) ss << ",";
|
||||
ss << "\n \"face_attrs\": " << attrs.face_attrs.size();
|
||||
}
|
||||
if (!attrs.body_attrs.empty()) {
|
||||
if (!first) ss << ",";
|
||||
ss << "\n \"body_attrs\": " << attrs.body_attrs.size();
|
||||
}
|
||||
ss << "\n }";
|
||||
}
|
||||
|
||||
ss << "\n}\n";
|
||||
|
||||
std::ofstream f(path);
|
||||
if (!f) return false;
|
||||
f << ss.str();
|
||||
return f.good();
|
||||
}
|
||||
|
||||
} // namespace vde::foundation
|
||||
Reference in New Issue
Block a user