topic Re: poly count question in 3ds Max Forum

poly count question

Anonymous — Thu, 28 Jan 2016 15:33:42 GMT

1st image on the left is of a nut imported for cad. As you can see it has way too many polys and makes an assembly very large and sluggesh.

The second image is of the same nut after i did the following;

converted to editable poly

sel all edges

Rt click then remove

This leave a real clean model with a much less poly count. This nut went from 1,284 polys to 28

My question is this; Is this acceptable in the game industry? Do i need to maintain tri's and quads?

https://gyazo.com/ff3f4166515cbbc19fa2b27a9997d59c

If this is ok is there a way to do all of the items at once globally vs one at a time?

thanks

Re: poly count question

PROH — Thu, 28 Jan 2016 16:20:57 GMT

Hi. Even though there's less polys, the amount of tris is the same. So it may look nicer in the viewport, but it'll not be better for games than the original. In fact it might actually behave worse, since all these invisible edges in an editable poly might deform in the process of export.

Unless your modelling everything with quads, it makes no sense to measure/count the amount of polys. Count tris instead, and turn it to an editable mesh before export. But if everything is made by quads (or tris & quads) then poly-count makes sense, and you can export your editable poly without fearing deformation (in most cases).

Hope it helps

Re: poly count question

Anonymous — Thu, 28 Jan 2016 17:01:42 GMT

shoot i was hopeing for a solution to my problems. The file size is so large i get wire frames and sluggesh working conditions.

I took an assembly from 312,480 polys to 15,164 polys

What if i dont plan on have my work game ready? Still not a good idea?

So is the only way to get the counts down is to recreat everything and not import, then use bump maps as much as possible?

Thanks for you input for sure!!

Re: poly count question

PROH — Thu, 28 Jan 2016 17:19:25 GMT

Well then it all depends on your need combined with your computer specs 🙂

BTW - If you're importing ACAD solids from a DWG file, then you can adjust the amount of tris/polys generated with the "Maximum surface deviation for 3D solids" parameter in Max's DWG importer. Lower numbers gives higher precision and therefore a higher poly count.

Hope it helps

Re: poly count question

Anonymous — Wed, 03 Feb 2016 12:03:20 GMT

These are not dwg or dxf files. I am importing from Solidworks and or Inventor. I have been using sat format. Is there settings to controls the quad and tri count in this area?

Thanks for your help!

Re: poly count question

kgokhangurbuz — Wed, 03 Feb 2016 12:13:53 GMT

Hello;

I'm positive with all the replies and i'd like to add something;

Game models consist of triangles, so even though you have Polygons which do not show triangles (in this case if they are not built from triangles) it will be a problem.

Every single mesh has a coordinate and bounds to another face to create it's topology, so according to your screenshot, the left and the middle images are unhealthy for game modelling, since the vertices cannot be computed healthy in 3 dimensions. Basically edges (which also create the faces with the help of where vertices are) should be consisting on your model.

There are ways to decrease edges to maintain the main topology, Optimize and ProOptimizer Modifier List commands basically do that (mentioning those to help you understand how reducing edges should work, please give them a try on your model in your screenshot at left).

Best regards;

Re: poly count question

PROH — Wed, 03 Feb 2016 12:14:13 GMT

I don't use theese importers myself, so I don't know for sure. But I don't think that the SAT format is capable to such a thing, since everything in it is made "fixed" triangles.

I may be wrong.... Maybe the help files can help you, or somebody else knows more about this.

Re: poly count question

Anonymous — Wed, 03 Feb 2016 18:44:34 GMT

hanks for all your help!

Re: poly count question

Anonymous — Thu, 04 Feb 2016 13:23:56 GMT

I just run into another question. Is there any advantage using the quadify mesh and make it 100% ?

If i take the imported cad file and convert to an editable poly the polys increase a ton. then when i add the quadify mesh and set it to 100% I end up with the same count that i started with before I turned it into an editable poly.

thanks

Re: poly count question

PROH — Thu, 04 Feb 2016 15:36:28 GMT

What the difference in tris? If converting it to Editable Poly makes more triangles (tris) then use the "Turn to Poly" modifier and tweak it till it don't.

Hope it helps

Re: poly count question

Anonymous — Mon, 08 Feb 2016 13:37:10 GMT

Thanks