Hi there, Using sympy0.7.6.win32, I run the following python script to try to find the intersection of a Line3D and a Plane. The coordinates for Point3D are from my intermediate result. I test the script in python 2.7.8 (Case 1) and python 3.4.2 (Case 2) and got different results.
######################################### from sympy import * l2 = Line3D(Point3D(50000004459633/5000000000000, -891926590718643/1000000000000000, 231800966893633/100000000000000), Point3D(50000004459633/50000000000000, -222981647679771/250000000000000, 231800966893633/100000000000000)) p2 = Plane(Point3D(402775636372767/100000000000000, -97224357654973/100000000000000, 216793600814789/100000000000000), (-9.00000087501922, -4.81170658872543e-13, 0.0)) print(p2.is_parallel(l2)) print(p2.intersection(l2) ################################################### Case 1: ========================================================= Python 2.7.8 (default, Jun 30 2014, 16:03:49) [MSC v.1500 32 bit (Intel)] on win32 Type "copyright", "credits" or "license()" for more information. >>> ================================ RESTART ================================ >>> False [Point3D(4, -1, 2)] Case 2: ========================================================== Python 3.4.2 (v3.4.2:ab2c023a9432, Oct 6 2014, 22:15:05) [MSC v.1600 32 bit (Intel)] on win32 Type "copyright", "credits" or "license()" for more information. >>> ================================ RESTART ================================ >>> False [] If it is a bug, where do I know it is fixed? ouyang -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/f6dd0753-9904-4152-ba4b-0413a7bc9400%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
