freecad X方向相交 及面积计算

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#构建X方向切割面CX；
import FreeCAD as App
import FreeCADGui as Gui
import Part

doc = App.activeDocument()
if doc is None:
    doc = App.newDocument("CutMacro")

# 清理旧对象（如果已存在）
for obj in doc.Objects:
    doc.removeObject(obj.Name)

cylinder1 = doc.addObject("Part::Cylinder", "Cylinder1")
cylinder1.Radius = 15 # D30 -> 半径15
cylinder1.Height = 70
cylinder1.Placement.Base = App.Vector(0, 0, 0)

plane = doc.addObject("Part::Box", "CX")
plane.Length = 1 # X方向厚度
plane.Width = 40 # Y方向
plane.Height = 70 # Z方向
plane.Placement.Base = App.Vector(0, -20, 0) # 位置固定

doc.recompute()

# 执行布尔相交运算
common = doc.addObject("Part::Common", "Intersection")
common.Base = cylinder1
common.Tool = plane

doc.recompute()

# 获取交集形状并输出基本信息
shape = common.Shape
print("=== 圆柱与切割面 CX 的交集信息 ===")
print(f"体积 Volume: {shape.Volume} mm³")
print(f"边界框 Bounds（min/max的坐标范围）: {shape.BoundBox}")
print(f"表面积 Area: {shape.Area} mm²")
print(f"是否为有效形状: {shape.isValid()}")
print(f"总边长（线长度）: {shape.Length}")
center = shape.CenterOfGravity
print("=== 交集质心坐标 ===")
print(f"X: {center.x:.2f} mm")
print(f"Y: {center.y:.2f} mm")
print(f"Z: {center.z:.2f} mm")
print(f"具体边界坐标: {shape.BoundBox.XMin}")

print("=== 每个面的面积 ===")
for i, face in enumerate(shape.Faces):
    print(f"Face {i+1} area: {face.Area}") 

 

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