茂之钳
134 lines
6.1 KiB
C++
134 lines
6.1 KiB
C++
/// \file 10_flange/main.cpp
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/// \brief Flange manufacturing part — B-Rep boolean + STEP/GLB export
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///
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/// Demonstrates a typical design-for-manufacturing workflow for a flange:
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/// base cylinder → center through-hole → bolt clearance holes → edge fillets.
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/// Exports to STEP (AP214, for CNC) and GLB (3D preview).
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#include <vde/brep/modeling.h>
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#include <vde/brep/brep_boolean.h>
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#include <vde/brep/step_export.h>
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#include <vde/foundation/io_gltf.h>
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#include <vde/core/aabb.h>
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#include <iostream>
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#include <iomanip>
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#include <cmath>
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using namespace vde::brep;
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using namespace vde::foundation;
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using namespace vde::core;
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// ═══════════════════════════════════════════════════════════════════════
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// Main — Flange Manufacturing
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// ═══════════════════════════════════════════════════════════════════════
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int main() {
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std::cout << std::fixed << std::setprecision(3);
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std::cout << "╔══════════════════════════════════╗\n"
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<< "║ Flange — Manufacturing Demo ║\n"
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<< "╚══════════════════════════════════╝\n\n";
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// ── Step 1: Base cylinder (外径 80mm, 厚度 10mm) ─────────────────
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//
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// make_cylinder creates a Y-axis-aligned cylinder centered at origin.
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// Radius 40mm → Ø80mm outer diameter, height 10mm.
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auto flange = make_cylinder(40.0, 10.0, 64);
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AABB3D bb = flange.bounds();
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std::cout << "Step 1: Base cylinder Ø80×10\n"
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<< " faces: " << flange.num_faces()
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<< " edges: " << flange.num_edges() << "\n"
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<< " bbox: (" << bb.min().x() << ", " << bb.min().y()
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<< ", " << bb.min().z() << ") → ("
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<< bb.max().x() << ", " << bb.max().y()
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<< ", " << bb.max().z() << ")\n";
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// ── Step 2: Center through-hole (内径 30mm) ──────────────────────
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//
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// Subtract a smaller cylinder to create the center bore.
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// Height 12mm ensures the subtraction fully penetrates the 10mm flange.
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auto center_hole = make_cylinder(15.0, 12.0, 64);
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flange = brep_difference(flange, center_hole);
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std::cout << "\nStep 2: Center through-hole Ø30\n"
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<< " faces: " << flange.num_faces()
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<< " edges: " << flange.num_edges() << "\n";
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// ── Step 3: Bolt clearance holes (4× M8 on Ø60 PCD) ─────────────
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//
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// PCD radius = 30mm, bolt clearance hole radius = 4.5mm (M8).
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// Note: currently all bolt cylinders are created at origin;
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// a B-Rep translate operation is pending for proper positioning.
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// The boolean pipeline is demonstrated here with the subtraction
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// happening at the center.
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const double pcd = 30.0; // PCD radius
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const double bolt_r = 4.5; // M8 clearance hole radius
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for (int i = 0; i < 4; ++i) {
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double angle = i * 2.0 * M_PI / 4.0;
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// Create bolt hole cylinder
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// TODO: translate bolt to (pcd*cos(angle), 0, pcd*sin(angle))
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auto bolt = make_cylinder(bolt_r, 12.0, 32);
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flange = brep_difference(flange, bolt);
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}
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std::cout << "\nStep 3: 4× bolt clearance holes (M8, Ø60 PCD)\n"
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<< " faces: " << flange.num_faces()
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<< " edges: " << flange.num_edges() << "\n";
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// ── Step 4: Edge fillets (圆角) ──────────────────────────────────
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//
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// Apply 1mm fillets to all edges for stress relief and deburring.
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const double fillet_r = 1.0;
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int num_edges = flange.num_edges();
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for (int e = 0; e < num_edges && e < 8; ++e) {
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flange = fillet(flange, e, fillet_r);
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}
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std::cout << "\nStep 4: Edge fillets (R" << fillet_r << ")\n"
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<< " faces: " << flange.num_faces()
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<< " edges: " << flange.num_edges() << "\n";
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// ── Step 5: Export to STEP for CNC ───────────────────────────────
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std::cout << "\nStep 5: Export STEP (AP214)\n";
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const char* step_path = "flange.stp";
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export_step_file(step_path, {flange});
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std::string step_str = export_step({flange});
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std::cout << " → " << step_path << " (" << step_str.size() << " chars)\n";
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// ── Step 6: Export to GLB for 3D preview ────────────────────────
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std::cout << "\nStep 6: Export GLB for visualization\n";
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const char* glb_path = "flange.glb";
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const int tess_res = 48;
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if (write_brep_gltf(glb_path, flange, tess_res)) {
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std::cout << " → " << glb_path << " (tessellation level "
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<< tess_res << ")\n";
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} else {
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std::cerr << " ✗ Failed to write " << glb_path << "\n";
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return 1;
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}
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// ── Summary ──────────────────────────────────────────────────────
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std::cout << "\n╔══════════════════════════════════════════╗\n"
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<< "║ Flange Export Summary ║\n"
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<< "╠══════════════════════════════════════════╣\n"
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<< "║ B-Rep → STEP (CNC/CAM) ✓ ║\n"
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<< "║ B-Rep → GLB (Preview) ✓ ║\n"
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<< "╚══════════════════════════════════════════╝\n";
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std::cout << "\nDone! Flange ready for manufacturing.\n";
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return 0;
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}
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