4 replies to this topic

[Mr. Photog]

I am working on building a grandstand, and it seems like the 3do is much larger than I would expect.

The .3dp file is about 7kb, and the 3do is about 58kb.

Previous 3dos I've made have file sizes slightly larger -- maybe 30% to 50% larger -- than the 3dp file. It just seems strange that this one is so much bigger. (And I'm going to have 4 similar stands, so I'd rather not have the file sizes keep balooning).

I have removed duplicate vertices and have only 4 or 5 textures.

Let me know if there are any tips for reducing this bloat.

Thanks,
Matt

[Paul Skingley]

It depends what you have built and how many polygons and different textures. Most of my stands are under 30kb but i have made others that are over 100kb.

Examples -
12kb 3dp - 109kb 3do
10kb 3dp - 26kb 3do
8kb 3dp - 16kb 3do


Paul

[ginetto]

Hi Matt
be sure you don't let the polygons cross each other.
1 millimeter distance is enough space to make the 3do smaller.

[Mr. Photog]

Ginetto, that would explain it.

Would there be any difference between one polygon that crosses another, and splitting a polygon into two -- one on either side?

There's a lot of polygon crossing in this stand. I could build it with polygons that don't cross, but worry that it might end up being almost as large.

The grandstand is a repeating structure, 10 identical sections (well, nearly identical.) A 3do of just the first section is 5.69kb; so 10 of those would be the same size as my 3do now... the middle 8 sections would be a little bit smaller, so it might not be 10x as large, but it would get pretty close. I'll experiment a little.

Matt

[Mr. Photog]

I have made a rough version of a rebuilt 3do, with no crossing polygons.  That means that there are more polygons, overall.

The 3dp is now something like 36kb, a huge increase.  But the 3do is down to about 45kb, which is pretty good.  There are one or 2 changes I want to make, but that's an improvement.

Thanks!