🐛 fix ε accuracy

tests/test_plane3.py

@@ -12,6 +12,8 @@ import logging
 
 from mbcp.mp_math.line import Line3
 from mbcp.mp_math.plane import Plane3
+from mbcp.mp_math.point import Point3
+from mbcp.mp_math.vector import Vector3
 
 
 class TestPlane3:
@@ -20,10 +22,10 @@ class TestPlane3:
         """
         测试平面的交线
         """
-        correct_ans = Line3(4, 3, 1, 1)
+        correct_ans = Line3(Point3(-3, 2, 5), Vector3(4, 3, 1))
 
         pl1 = Plane3(1, 0, -4, 23)
         pl2 = Plane3(2, -1, -5, 33)
-        actual_ans = pl1.cal_intersection_line3(pl2)
+        actual_ans = pl1 & pl2  # 平面交线
         logging.info(f"正确答案：{correct_ans}    实际答案：{actual_ans}")
         assert actual_ans == correct_ans