feat(v2.0.0): Sprint 10 — B-Rep完善 + STEP导入/导出 + 布尔运算 + 验证

S10-A: B-Rep modeling 补齐 - fillet: 恒定半径滚动球倒圆（NURBS 曲面构建 + 相邻面裁剪） - chamfer: 等距倒角（平面偏移 + 倒角面构建） - shell: 完整抽壳（顶点偏移 + 内外面 + 开口侧壁） S10-B: STEP AP203/AP214 导入 - ISO 10303-21 解析器（1,424 行） - 支持 14 种几何实体 → NurbsCurve/NurbsSurface 转换 - 完整拓扑链：VERTEX_POINT → EDGE_CURVE → EDGE_LOOP → ADVANCED_FACE → CLOSED_SHELL → MANIFOLD_SOLID_BREP - 装配支持：NEXT_ASSEMBLY_USAGE_OCCURRENCE + CONTEXT_DEPENDENT_SHAPE_REPRESENTATION S10-C.1: STEP AP214 导出 - export_step / export_step_file - 曲线/曲面类型自动检测简化输出 S10-C.2: B-Rep 级布尔运算 - brep_union / brep_intersection / brep_difference - 面-面求交 + 内/外分类 + 面缝合 S10-C.3: B-Rep 工程验证 - ValidationResult: 水密性/悬边/自相交/方向一致性/欧拉示性数测试: 5 个新测试文件，47 项测试（modeling/STEP导入/导出/布尔/验证）修改: 7 files (+576/-47) | 新增: 13 files (4,141 行) 总计: +4,670 行
2026-07-24 05:18:52 +00:00
parent c06d8f4d0a
commit 8a19e265cd
20 changed files with 4721 additions and 51 deletions
@@ -0,0 +1,166 @@
+#include <gtest/gtest.h>
+#include "vde/brep/brep.h"
+#include "vde/brep/modeling.h"
+#include "vde/brep/step_export.h"
+#include <fstream>
+#include <sstream>
+#include <algorithm>
+
+using namespace vde::brep;
+using namespace vde::core;
+
+// ═══════════════════════════════════════════════════════════
+//  STEP export basic tests
+// ═══════════════════════════════════════════════════════════
+
+TEST(StepExportTest, ExportBox_ProducesValidStructure) {
+    auto box = make_box(2, 3, 4);
+    std::string step = export_step({box});
+
+    // Must start with ISO-10303-21 header
+    EXPECT_TRUE(step.find("ISO-10303-21;") != std::string::npos);
+
+    // Must contain HEADER section
+    EXPECT_TRUE(step.find("HEADER;") != std::string::npos);
+    EXPECT_TRUE(step.find("ENDSEC;") != std::string::npos);
+
+    // Must contain DATA section
+    EXPECT_TRUE(step.find("DATA;") != std::string::npos);
+
+    // Must contain CARTESIAN_POINT entities
+    EXPECT_TRUE(step.find("CARTESIAN_POINT") != std::string::npos);
+
+    // Must contain topology entities
+    EXPECT_TRUE(step.find("CLOSED_SHELL") != std::string::npos ||
+                step.find("ADVANCED_FACE") != std::string::npos);
+
+    // Must end properly
+    EXPECT_TRUE(step.find("END-ISO-10303-21;") != std::string::npos);
+}
+
+TEST(StepExportTest, ExportBox_ContainsManifoldSolidBrep) {
+    auto box = make_box(1, 1, 1);
+    std::string step = export_step({box});
+
+    EXPECT_TRUE(step.find("MANIFOLD_SOLID_BREP") != std::string::npos);
+}
+
+TEST(StepExportTest, ExportBox_ContainsPlanes) {
+    auto box = make_box(2, 2, 2);
+    std::string step = export_step({box});
+
+    // Box faces are degree 1×1 → should export as PLANE
+    EXPECT_TRUE(step.find("PLANE") != std::string::npos ||
+                step.find("B_SPLINE_SURFACE") != std::string::npos);
+}
+
+TEST(StepExportTest, ExportBox_ContainsEdgeCurve) {
+    auto box = make_box(1, 1, 1);
+    std::string step = export_step({box});
+
+    EXPECT_TRUE(step.find("EDGE_CURVE") != std::string::npos);
+}
+
+TEST(StepExportTest, ExportBox_ContainsOrientedEdge) {
+    auto box = make_box(1, 1, 1);
+    std::string step = export_step({box});
+
+    EXPECT_TRUE(step.find("ORIENTED_EDGE") != std::string::npos);
+}
+
+TEST(StepExportTest, ExportBox_HasProperEntityNumbering) {
+    auto box = make_box(1, 1, 1);
+    std::string step = export_step({box});
+
+    // Should have at least entity #1
+    EXPECT_TRUE(step.find("#1 =") != std::string::npos);
+
+    // Count entity occurrences to ensure numbering is sequential
+    int entity_count = 0;
+    size_t pos = 0;
+    while ((pos = step.find("= ", pos)) != std::string::npos) {
+        entity_count++;
+        pos += 2;
+    }
+    EXPECT_GT(entity_count, 5);
+}
+
+// ═══════════════════════════════════════════════════════════
+//  Sphere STEP export
+// ═══════════════════════════════════════════════════════════
+
+TEST(StepExportTest, ExportSphere_ProducesValidOutput) {
+    auto sphere = make_sphere(2.0);
+    std::string step = export_step({sphere});
+
+    EXPECT_TRUE(step.find("ISO-10303-21;") != std::string::npos);
+    EXPECT_TRUE(step.find("CARTESIAN_POINT") != std::string::npos);
+    EXPECT_TRUE(step.find("MANIFOLD_SOLID_BREP") != std::string::npos ||
+                step.find("CLOSED_SHELL") != std::string::npos);
+}
+
+// ═══════════════════════════════════════════════════════════
+//  Cylinder STEP export
+// ═══════════════════════════════════════════════════════════
+
+TEST(StepExportTest, ExportCylinder_ProducesValidOutput) {
+    auto cyl = make_cylinder(1.0, 4.0);
+    std::string step = export_step({cyl});
+
+    EXPECT_TRUE(step.find("ISO-10303-21;") != std::string::npos);
+    EXPECT_TRUE(step.find("CARTESIAN_POINT") != std::string::npos);
+}
+
+// ═══════════════════════════════════════════════════════════
+//  Multiple bodies
+// ═══════════════════════════════════════════════════════════
+
+TEST(StepExportTest, ExportMultipleBodies_ProducesValidOutput) {
+    auto box1 = make_box(1, 1, 1);
+    auto box2 = make_box(2, 2, 2);
+    std::string step = export_step({box1, box2});
+
+    EXPECT_TRUE(step.find("ISO-10303-21;") != std::string::npos);
+    EXPECT_TRUE(step.find("MANIFOLD_SOLID_BREP") != std::string::npos);
+}
+
+// ═══════════════════════════════════════════════════════════
+//  File export
+// ═══════════════════════════════════════════════════════════
+
+TEST(StepExportTest, ExportFile_WritesToDisk) {
+    auto box = make_box(1, 1, 1);
+    std::string path = "/tmp/test_vde_export.stp";
+    export_step_file(path, {box});
+
+    std::ifstream in(path);
+    EXPECT_TRUE(in.good());
+    std::string content((std::istreambuf_iterator<char>(in)),
+                         std::istreambuf_iterator<char>());
+    EXPECT_TRUE(content.find("ISO-10303-21;") != std::string::npos);
+}
+
+// ═══════════════════════════════════════════════════════════
+//  Empty model
+// ═══════════════════════════════════════════════════════════
+
+TEST(StepExportTest, ExportEmptyModel_ProducesMinimalOutput) {
+    BrepModel empty;
+    std::string step = export_step({empty});
+
+    EXPECT_TRUE(step.find("ISO-10303-21;") != std::string::npos);
+    EXPECT_TRUE(step.find("DATA;") != std::string::npos);
+}
+
+// ═══════════════════════════════════════════════════════════
+//  AP214 schema check
+// ═══════════════════════════════════════════════════════════
+
+TEST(StepExportTest, UsesAP214Schema) {
+    auto box = make_box(1, 1, 1);
+    std::string step = export_step({box});
+
+    EXPECT_TRUE(step.find("AUTOMOTIVE_DESIGN") != std::string::npos ||
+                step.find("AP214") != std::string::npos ||
+                step.find("10303 214") != std::string::npos);
+}