pythonocc hlr实例 deepwiki 显示隐藏线

直接在pythonocc页面底下问，ai再也不会import自创类名了，带着文档编码的，降维打击了

import matplotlib.pyplot as plt  
import matplotlib.patches as patches  
from OCC.Core.BRepPrimAPI import BRepPrimAPI_MakeBox, BRepPrimAPI_MakeCylinder  
from OCC.Core.BRepAlgoAPI import BRepAlgoAPI_Cut  
from OCC.Core.gp import gp_Pnt, gp_Dir, gp_Ax2  
from OCC.Extend.TopologyUtils import get_sorted_hlr_edges  
from OCC.Core.BRepAdaptor import BRepAdaptor_Curve  
from OCC.Core.GCPnts import GCPnts_UniformDeflection  # 创建立方体  
box = BRepPrimAPI_MakeBox(100, 100, 100).Shape()  # 创建圆柱体作为盲孔  
cylinder_ax = gp_Ax2(gp_Pnt(50, 50, 20), gp_Dir(0, 0, 1))  
cylinder = BRepPrimAPI_MakeCylinder(cylinder_ax, 20, 60).Shape()  # 布尔运算：从立方体中减去圆柱体  
cut_op = BRepAlgoAPI_Cut(box, cylinder)  
shape_with_hole = cut_op.Shape()  def get_projection_edges(shape, direction):  """获取指定方向的投影边"""  visible_edges, hidden_edges = get_sorted_hlr_edges(  shape,   position=gp_Pnt(0, 0, 0),  direction=direction,  export_hidden_edges=True  )  return visible_edges, hidden_edges  def edge_to_2d_points(edge, deflection=0.1):  """将3D边转换为2D点列表"""  adaptor = BRepAdaptor_Curve(edge)  discretizer = GCPnts_UniformDeflection(adaptor, deflection)  points = []  for i in range(1, discretizer.NbPoints() + 1):  pnt = discretizer.Value(i)  points.append((pnt.X(), pnt.Y()))  return points  def plot_view(ax, visible_edges, hidden_edges, title):  """绘制单个视图"""  ax.set_title(title)  ax.set_aspect('equal')  # 绘制可见线（实线）  for edge in visible_edges:  points = edge_to_2d_points(edge)  if len(points) > 1:  x_coords = [p[0] for p in points]  y_coords = [p[1] for p in points]  ax.plot(x_coords, y_coords, 'b-', linewidth=1)  # 绘制隐藏线（虚线）  for edge in hidden_edges:  points = edge_to_2d_points(edge)  if len(points) > 1:  x_coords = [p[0] for p in points]  y_coords = [p[1] for p in points]  ax.plot(x_coords, y_coords, 'r--', linewidth=0.5)  # 创建三视图  
fig, (ax1, ax2, ax3) = plt.subplots(1, 3, figsize=(15, 5))  # 正视图 (前视图)  
front_visible, front_hidden = get_projection_edges(shape_with_hole, gp_Dir(0, 1, 0))  
plot_view(ax1, front_visible, front_hidden, "正视图")  # 侧视图 (右视图)  
side_visible, side_hidden = get_projection_edges(shape_with_hole, gp_Dir(1, 0, 0))  
plot_view(ax2, side_visible, side_hidden, "侧视图")  # 俯视图 (顶视图)  
top_visible, top_hidden = get_projection_edges(shape_with_hole, gp_Dir(0, 0, 1))  
plot_view(ax3, top_visible, top_hidden, "俯视图")  plt.tight_layout()  
plt.show()