Webbed dish 4285 sub-part

[Willy Tschager]

Hello!

I'm very new and definitely not versed in this community, please disregard my ignorance and naivity as a noob.

A story: I build the 6398 Police HQ in Studio for nostalgia; upon rendering it the blue webbed dish looked a tiny bit angular, lacking angular resolution. I dig deep, how parts are made, how this LDraw works, tried LD Part Editor, used spreadsheets and ultimately "updated" the 4285s01.dat sub-part. I tried my best to keep CCW orientation. There are minor coplanarity issues with it (can't spot it on renders) and I can't comprehend command line 5, so I did not touch those.

If someone has the time to take look at it, have the knowledge and will to correct it (if needed) would be nice, especially if this could become an official part later on.
Part attached to this post.

Welcome to the forums. I had a quick look at your work which is already heading in the right direction. If I had to rework that dish I would generate a 96er edge prim with PrimGen2 in LDPE as a guideline.


  4-4edge.zip (Size: 986 bytes / Downloads: 2)

and save it in LDraw\p\96

I would then use this ultra hires prim in the part:

1 16 0 10 0 60 0 0 0 1 0 0 0 60 96\4-4edge.dat
1 16 0 16 0 60 0 0 0 1 0 0 0 60 96\4-4edge.dat
1 16 0 16 0 57 0 0 0 1 0 0 0 57 96\4-4edge.dat
1 16 0 7.5 0 54 0 0 0 1 0 0 0 54 96\4-4edge.dat
1 16 0 9.9 0 55 0 0 0 1 0 0 0 55 96\4-4edge.dat
1 16 0 10.75 0 57 0 0 0 1 0 0 0 57 96\4-4edge.dat

1 16 0 3.5 0 42 0 0 0 1 0 0 0 42 96\4-4edge.dat
1 16 0 5.5 0 42 0 0 0 1 0 0 0 42 96\4-4edge.dat

1 16 0 2 0 36 0 0 0 1 0 0 0 36 96\4-4edge.dat
1 16 0 4 0 36 0 0 0 1 0 0 0 36 96\4-4edge.dat

Add radial edges:

2 273 23.204 0 -4 59.872 10 -3.924
2 273 23.204 2 -4 56.878 10.75 -3.728

And calculate the intersection point in LDPE with the edge of the prim as main target for the calculation:

0 !LPE VERTEX 53.844 7.5 -3.959
0 !LPE VERTEX 41.786 3.5 -4.002
0 !LPE VERTEX 35.759 2 -4.011

You'll see that those differ from the current vertices, which surely have been calculated with a 48er prim as base.

w.