Hello

I would like to create a library of objects for my renderings .... I would like to know what is the fastest way to create models drawn in nurbs and then exported to Obj or Fbx not very heavy and then use them as objects in the rendering program.

I just designed a 15 mb pool bed and exported to obj using the Quad value 12 option to have the least jagged surfaces but the final file is always 11 mb.

In your opinion it is normal or there are modeling methods where you can directly lighten the parts during modeling that make the model like spokes become too heavy, etc.

I hypothesized that the model comes to weigh a lot because each element of the bed has surfaces with spokes ... for this reason I ask you if directly during the modeling there are some tricks to make the model lighter

Depending of what result you want ;)

Here for example i have not enough "polygons" from Moi...if i want perfect rounded forms!
maybe 85 000 for all the objects must be the double!

Hi Tony, a lot of the weight in a file like that will be in the little polygons that you'll get on fillet surfaces.

To reduce the generated file size you'll need to have fewer polygons generated.

Probably the easiest way to do that is to expand the Meshing options dialog by the arrow in the bottom left corner to get the detailed controls, and then put in a distance value for "Avoid smaller than". Try putting in a value of one-half of your fillet radius distance.

With that parameter any polygons that are smaller than that distance will use a rougher angle value and so will not get refined as much, resulting in fewer polygons.

You also might want to not have fillets on everything, if you can leave them off or do a chamfer instead that can also lighten up the output file size a lot as well.

- Michael

Hi micheal

I generated some rays because I considered that kind of refinement in the case of a close rendering.

So you advise me to generate a chamfer instead of the radius? .... I thought that maybe it was me who was already creating very heavy radii in modeling.

I tried to use the option to generate fewer polygons but in curved surfaces it creates this problem that I attach

Hi Tony,

re:
> So you advise me to generate a chamfer instead of the radius?

Yes, if it's in a small area that will not be zoomed into closely in a render.


> I tried to use the option to generate fewer polygons but in curved surfaces it creates this problem that I attach

Your value is too large, reduce it gradually and see what results you get. For example try a value of 4, then 2, then 1, then 0.1, etc...

The result you want is that only very small sized fillet pieces will get the coarser mesh.

- Michael

Hi micheal

Yes, I have done various tests but the file obviously becomes larger .... I think it is normal .... I thought that using curves with a few points I was able to decrease the weight of the object .... but I think the only one option is to avoid rays in areas where the rendering is not close together.

Hi Tony, the point count of the curves you use has no relationship to the output density. The density will be determined by the shape of the geometry, with curved surfaces generating more polygons.

re:
> Yes, I have done various tests but the file obviously becomes larger

You mean it becomes larger than the 11 mb you initially had, or larger than with "Avoid smaller than" of 5?

- Michael

Hi micheal

If I use the default value of 12 on corner the output file is 10.8mb

If I use 12 on corner - 1 on curved surfaces and leave out less than 10 the output file is 19.1 mb
Obviously with the second option the file in the rendering is more refined

Hi Tony, ok so I was a little confused by the Italian text in your screenshot above.

So in this one here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=10244.6

the problem there is that you've put in values for both "Divider larger than" and also "Avoid smaller than".

You can use "Divide larger than" to increase the amount of divisions, any poly larger than this distance will get divided.

You can use "Avoid smaller than" to decrease the amount of divisions, any poly smaller than this distance will get a rougher angle.

So with using both of those at the same time you're telling it to simultaneously divide things up more and also to not divide.

Don't do that.

Leave "Divide larger than" blank. It's used for different situations where someone wants to have a high poly count.

Put in a relatively small value (like 1, or 0.5 or 0.1) into "Avoid smaller than". Adjust the angle with the slider so the large pieces have a smooth enough density for you, and then smaller areas (below the "Avoid smaller than" distance) will be rougher which is what you want for making a reduced file size.

If you need more help or demonstrations it would probably help if you could post the model file. You can e-mail it to me at moi@moi3d.com if you want to keep it private.

- Michael