After item 4, please do not forget to remark the location of the origin respect to the selected object...jruiz wrote: ↑Fri Sep 14, 2018 9:55 pmI propose that you do a little mental exercise with the help of another person who knows about Cartesian coordinate system but with no notions about any CAD software:
0.- Please try not to influence the selections made by your assistant and ask him / her to:
1.- Choose mentally any object, for example a car.
2.- Associate names up, down, left, right, forward and backward to the portions of the selected object as deemed appropriate.
3.- Place the object inside a rectangular parallelepiped of a suitable size so that the object barely fits.
4.- Finally, place the positive semi-axes + X, + Y and + Z coinciding with the axes in
where three edges of the parallelepiped rest.
5.- Repeat the exercise with other people.
Now answer please: Did the selections made by your assistants mostly coincide with the scheme used by CAD software?
And please answer the question...