so my problem may be obvious or not know, i dont know but in any case I do not see how to make it work. So here’s my problem, I have a plan that is cut in two by a segment, so it has 6 vertices, what I want is to create a python code that allows me to select only the vertices of the section of this plan, in any position in space, regardless rotations that have been applied to the plan.
Here is the link to the Blender file.
https://dl.dropboxusercontent.com/u/29747715/Probleme%20plan.blend