When arranging the conduit, the Z value in the last point XYZ of the riser is set correctly. For example, the last point of the riser was originally set to (44.693623167, -17.191586493, 5.905511811), but after the line pipe was arranged by program, the last point of the riser became (44.693623167, -17.191586493, 4.46522309711286), resulting in the Z value of the riser always being deviated, and it was tested many times, and the result was the same. Who has ever encountered such a situation, and how to solve this deviation problem? See points 1 and 2 in the screenshot for details.
There will always be a deviation in the Z-value of the coordinates of the riser
Yes. It is very important for every programmer dealing with geometry and CAD to understand that it is impossible to exactly represent a floating point number in a digital computer. Hence, the need for fuzz when comparing two numbers:
To avoid any deviation in a series P1, P2, ... Pn of vertical points, you can proceed as follows. Pick one of the collinear vertical points. It does not matter which one it is, and any one will do, e.g., the bottom one. Let's assume that is P1 with coordinates (x1,y1,z1). Now, replace the entire series of points P1,...Pn by a modified series P1,Q2,Q3,...Qn by defining each Q as follows:
Qi = (x1,y1,zi) for i = 2, 3, ... n
In other words, define all the Q so that they lie exactly vertically above P1.
Since the Pi are all supposed to be vertical, the difference between their x and y coordinates must be negligeable.
So, ignore it, and Bob's your uncle. Good luck.
Jeremy Tammik 
Developer Advocacy and Support + The Building Coder + Autodesk Developer Network + ADN Open
Developer Advocacy and Support + The Building Coder + Autodesk Developer Network + ADN Open
