fix: the orientation of corner fillets and inserting arcs on the polyline axis

primitive_process/interface/subface/geometry/polyline_fillet.hpp

@@ -22,7 +22,7 @@ struct fillet_config_t {
 // @param out_points 输出点列表
 // @param out_bulges 输出 bulge 列表（与 out_points 等长）
 // @param cfg        圆角参数
-void insert_profile_corner_fillets(const polyline_descriptor_t& profile,
+void insert_polyline_corner_fillets(const polyline_descriptor_t& profile,
                                    std::vector<vector3d>&       out_points,
                                    std::vector<double>&         out_bulges,
                                    const fillet_config_t&       cfg = {});

primitive_process/src/subface/geometry/extrude_helixline_geometry.cpp

@@ -12,19 +12,12 @@ void extrude_helixline_geometry_t::build()
     // 构建 axis 几何数据
     axis_geom.build_from_descriptor(axis_desc, axis_to_world, helixline_aabb);
 
-    const auto&           matrix_handle = this->axis_to_world.matrix();
-    const Eigen::Vector3d N             = -matrix_handle.col(0);
-    const Eigen::Vector3d T             = (matrix_handle.col(2) * this->axis_geom.height
-                               + this->axis_geom.radius * this->axis_geom.total_theta * matrix_handle.col(1))
-                                  .normalized();
-    const Eigen::Vector3d B = N.cross(T);
-
     // 对 profile 各衔接顶点插入微小圆角弧
     std::vector<vector3d> filleted_pts;
     std::vector<double>   filleted_bgs;
-    const fillet_config_t fillet_cfg{/*segment_ratio=*/0.02,
+    const fillet_config_t fillet_cfg{/*segment_ratio=*/3.0,
                                      /*min_turn_angle_deg=*/0.5};
-    insert_profile_corner_fillets(profile_desc, filleted_pts, filleted_bgs, fillet_cfg);
+    insert_polyline_corner_fillets(profile_desc, filleted_pts, filleted_bgs, fillet_cfg);
 
     polyline_descriptor_t filleted_desc{};
     filleted_desc.point_number     = static_cast<uint32_t>(filleted_pts.size());
@@ -38,6 +31,14 @@ void extrude_helixline_geometry_t::build()
               << "original profile points: " << profile_desc.point_number << ", after fillet: " << filleted_desc.point_number
               << "\n";
 
+    
+    const auto&           matrix_handle = this->axis_to_world.matrix();
+    const Eigen::Vector3d N             = -matrix_handle.col(0);
+    const Eigen::Vector3d T             = (matrix_handle.col(2) * this->axis_geom.height
+                               + this->axis_geom.radius * this->axis_geom.total_theta * matrix_handle.col(1))
+                                  .normalized();
+    const Eigen::Vector3d B = N.cross(T);
+
     // 构建 profile 几何数据（使用插入圆角后的 descriptor）
     aabb_t_dim<2> profile_aabb;
     profile_geom.build_as_profile(filleted_desc, B, N, matrix_handle.col(3).head<3>(), profile_aabb);

primitive_process/src/subface/geometry/extrude_polyline_geometry.cpp

@@ -9,40 +9,63 @@ void extrude_polyline_geometry_t::build()
     const auto& profile_desc = this->descriptor.profiles[0];
     const auto& axis_desc    = this->descriptor.axis;
 
-    // 构建 axis 几何数据，同时得到 axis_to_world 坐标系
-    axis_geom.build_as_axis(axis_desc, profile_desc.reference_normal, axis_to_world, polyline_aabb);
+    // 对 axis 折线插入微小圆角弧
+    std::cout << "[extrude_polyline_geometry_t::build]: inserting tiny curve for axis"
+              << " segment_ratio=" << 0.1 << ", min_turn_angle_deg=" << 0.0 << "\n";
+    std::vector<vector3d> filleted_axis_pts;
+    std::vector<double>   filleted_axis_bgs;
+    const fillet_config_t axis_fillet_cfg{/*segment_ratio=*/0.1,
+                                          /*min_turn_angle_deg=*/0.0};
+    insert_polyline_corner_fillets(axis_desc, filleted_axis_pts, filleted_axis_bgs, axis_fillet_cfg);
 
-    // 从 axis_to_world 中提取投影方向
-    const Eigen::Vector3d proj_x = axis_to_world.matrix().col(0).head<3>(); // Binormal
-    const Eigen::Vector3d proj_y = axis_to_world.matrix().col(1).head<3>(); // Normal
-    const Eigen::Vector3d origin = axis_to_world.matrix().col(3).head<3>();
+    // 构建圆角后的 axis 临时描述符
+    polyline_descriptor_t filleted_axis_desc{};
+    filleted_axis_desc.point_number     = static_cast<uint32_t>(filleted_axis_pts.size());
+    filleted_axis_desc.points           = filleted_axis_pts.data();
+    filleted_axis_desc.bulge_number     = static_cast<uint32_t>(filleted_axis_bgs.size());
+    filleted_axis_desc.bulges           = filleted_axis_bgs.data();
+    filleted_axis_desc.reference_normal = axis_desc.reference_normal;
+    filleted_axis_desc.is_close         = axis_desc.is_close;
+
+    std::cout << "[extrude_polyline_geometry_t::build] "
+              << "original axis points: " << axis_desc.point_number << ", after fillet: " << filleted_axis_desc.point_number
+              << "\n";
+
+    axis_geom.build_as_axis(filleted_axis_desc, // 改为 filleted_axis_desc
+                            profile_desc.reference_normal,
+                            axis_to_world,
+                            polyline_aabb);
 
-    // 对 profile 各衔接顶点插入微小圆角弧
-    // segment_ratio=0.05 意味着每段损失约 5%，棱角感仍然明显。
-    // 如需更锋利，将 segment_ratio 调至 0.01-0.02；
-    // 如需更平滑，调至 0.1-0.2。
-    std::vector<vector3d> filleted_pts;
-    std::vector<double>   filleted_bgs;
-    const fillet_config_t fillet_cfg{/*segment_ratio=*/0.05,
-                                     /*min_turn_angle_deg=*/0.5};
-    insert_profile_corner_fillets(profile_desc, filleted_pts, filleted_bgs, fillet_cfg);
-
-    // 构建临时 descriptor 指向圆角后的数据（不修改原始 descriptor）
-    polyline_descriptor_t filleted_desc{};
-    filleted_desc.point_number     = static_cast<uint32_t>(filleted_pts.size());
-    filleted_desc.points           = filleted_pts.data();
-    filleted_desc.bulge_number     = static_cast<uint32_t>(filleted_bgs.size());
-    filleted_desc.bulges           = filleted_bgs.data();
-    filleted_desc.reference_normal = profile_desc.reference_normal;
-    filleted_desc.is_close         = profile_desc.is_close;
+    std::cout << "[extrude_polyline_geometry_t::build]: inserting tiny curve for profile"
+              << " segment_ratio=" << 0.05 << ", min_turn_angle_deg=" << 0.0 << "\n";
+    std::vector<vector3d> filleted_profile_pts;
+    std::vector<double>   filleted_profile_bgs;
+    const fillet_config_t profile_fillet_cfg{/*segment_ratio=*/0.1,
+                                     /*min_turn_angle_deg=*/0.0};
+    insert_polyline_corner_fillets(profile_desc, filleted_profile_pts, filleted_profile_bgs, profile_fillet_cfg);
+
+    polyline_descriptor_t filleted_profile_desc{};
+    filleted_profile_desc.point_number     = static_cast<uint32_t>(filleted_profile_pts.size());
+    filleted_profile_desc.points           = filleted_profile_pts.data();
+    filleted_profile_desc.bulge_number     = static_cast<uint32_t>(filleted_profile_bgs.size());
+    filleted_profile_desc.bulges           = filleted_profile_bgs.data();
+    filleted_profile_desc.reference_normal = profile_desc.reference_normal;
+    filleted_profile_desc.is_close         = profile_desc.is_close;
 
     std::cout << "[extrude_polyline_geometry_t::build] "
-              << "original profile points: " << profile_desc.point_number << ", after fillet: " << filleted_desc.point_number
+              << "original profile points: " << profile_desc.point_number
+              << ", after fillet: " << filleted_profile_desc.point_number
               << "\n";
 
+    
+    // 从 axis_to_world 中提取投影方向
+    const Eigen::Vector3d proj_x = axis_to_world.matrix().col(0).head<3>(); // Binormal
+    const Eigen::Vector3d proj_y = axis_to_world.matrix().col(1).head<3>(); // Normal
+    const Eigen::Vector3d origin = axis_to_world.matrix().col(3).head<3>();
+
     // 构建 profile 几何数据（使用插入圆角后的 descriptor）
     aabb_t_dim<2> profile_aabb;
-    profile_geom.build_as_profile(filleted_desc, proj_x, proj_y, origin, profile_aabb);
+    profile_geom.build_as_profile(filleted_profile_desc, proj_x, proj_y, origin, profile_aabb);
 
     // 将 profile 的最大范围扩展到 polyline_aabb
     const auto profile_max_extent  = profile_aabb.max().cwiseMax(profile_aabb.min().cwiseAbs()).maxCoeff();

primitive_process/src/subface/geometry/polyline_fillet.cpp

@@ -85,7 +85,7 @@ Corner compute_corner(const std::vector<Eigen::Vector2d>& pts,
     // bulge 符号：cross>0 → 左转(CCW多边形凸角) → CW弧 → 负 bulge
     double       fillet_bulge = std::tan(turn_angle / 4.0);
     const double cross        = T_in.x() * T_out.y() - T_in.y() * T_out.x();
-    if (cross > 0.0) fillet_bulge = -fillet_bulge;
+    if (cross < 0.0) fillet_bulge = -fillet_bulge;
 
     c.active       = true;
     c.fillet_bulge = fillet_bulge;
@@ -105,7 +105,7 @@ inline void push_point(std::vector<vector3d>& out_points,
 
 } // anonymous namespace
 
-void insert_profile_corner_fillets(const polyline_descriptor_t& profile,
+void insert_polyline_corner_fillets(const polyline_descriptor_t& profile,
                                    std::vector<vector3d>&       out_points,
                                    std::vector<double>&         out_bulges,
                                    const fillet_config_t&       cfg)
@@ -122,7 +122,8 @@ void insert_profile_corner_fillets(const polyline_descriptor_t& profile,
     if (n < 3) {
         for (uint32_t i = 0; i < n; ++i) {
             out_points.push_back(profile.points[i]);
-            out_bulges.push_back(profile.bulges ? profile.bulges[i] : 0.0);
+            // 只有前n-1个顶点需要凸度（开放折线）
+            if (i < n - 1) { out_bulges.push_back(profile.bulges ? profile.bulges[i] : 0.0); }
         }
         return;
     }
@@ -204,12 +205,15 @@ void insert_profile_corner_fillets(const polyline_descriptor_t& profile,
         }
 
         // 末点：始终为 pts[n-1]（端点，没有圆角）
-        // bulge 对最后一点无意义（无后续段），填 0.0
         out_points.push_back(profile.points[n - 1]);
-        out_bulges.push_back(0.0);
+        //out_bulges.push_back(0.0);
     }
 
+    if (closed) {
         assert(out_points.size() == out_bulges.size());
+    } else {
+        assert(out_bulges.size() + 1 == out_points.size()); // 开放折线：凸度数量 = 点数 - 1
+    }
 }
 
 } // namespace internal