Instead of making the prism with one centre point and a 360° arc, start with a side node, then the centre, then a 180° arc.
This will give half the cylinder.
Complete with the other half (same but negative distance).
I always like to finish back at the starting point - so 7 instructions in all.
By staring on an edge you will have better control with the masking codes.
15 will show all edges including the vertical edges - this is important for the +64 mask.
-4 will hide the top edge.
+64 will give a view dependent edge on the curved (they are not really curves but a series of flat segments) so it will always appear if there is and edge as you rotate the prism.
There will be other ways to do this as well.
PRISM_ 7, spoutLength-(elbowLength+wallPlateLength),
spoutDiameter/2, 0, 15-4+64,
0, 0, 900,
0, 180, 4000,
-spoutDiameter/2, 0, 15-4+64,
0, 0, 900,
0, 180, 4000,
spoutDiameter/2, 0, -1
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11