I've make few tests and appear to work.
Few considerations:
1. java3d 1.7.0 (last stable) in place of 1.6.1.
-I knew it's a lot of work and I'm available to help
2. If java >9 don't like last java3d You could keep java 1.8
3. About Windows XP and 32b linux could be useful an opinion pull to see who still need it.
4. About java: almost all OS have their own politics and usually don't fully work with SH3D. So to bundle proper java in the same package I think is the best solution.
5. About polyline:
5.1- I like to modify individual segments (straight or curve). Could be more simple to make furniture icons like in CAD programs.
5.2- Add name for polyline.
6. About text (all texts): I wish to have for all the same options like are already for labels (furniture & rooms name, dimensions etc.).
Anyway You've make a great job all the time.
Many Thanks and stay healthy
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A computer program does what you tell it to do, not what you want it to do. Murphy's Law
When all else fails, read the instructions. Murphy's Law
If you don't like "AS IS", DIY. Dorin's law
