[Maximus3D]

Hi!

Alright, i ran this test today, the scene is something simple and quick i put together in Rhino for testingpurposes.

Scene contents:
- 1 wineglass
- 1 background plate (floor+backwall)
- 1 big plane emitter on the right side
- 1 small plane emitter top center above the wineglass
- Physical Sky enabled

MXS scene file was generated from Rhino and as can be seen in the
screenshot and rendering the polygonization pass looks weird..
there's a mix of both quads and tri's on the objects,
now i thought Maxwell only handled 3 sided polygons (tri's)
but now i'm not so sure what it does. And the object aren't that
optimized, there are areas with low density where there need to
be higher density of polygons and also the other way around.

Just take a look at this screenshot from within Studio
to see how the meshing was handled..



And the rendering below here shows this as the meshing messes up
the model and it looks less than good when rendered which tells
me you have to mesh your models BEFORE you render them and
export the MXS files otherwise you'll be one unhappy puppy. Look
at the foot and the inside of the glass, that's not really nice is it.. :/



There are visible polygons all over the place..

/ Max

[iker]

Max, use the MeshingManager command inside Rhino to control the exported polygons, it works here.

[Maximus3D]

Alright will do, i assume you're talking about that thing with a slider when you export models as polys and stuff. Yep i could use that but this test was to see what IF i didn't use that, just let Maxwell and Rhino take care of that part and see what happens. Then it wasn't pretty..

/ Max

[ivox3]

Max,

Now remember that rhinoll is using the rendermesh, ...so if your settings in [options] ----->[mesh] are good, ....then no problem. Or you could do it manually, like you said, but ....I think that's not necessary.

...also , check to see if you have an insersection issue.

[Becco_UK]

Shouldn't the mesh be triangulated for use in Maxwell

[Maximus3D]

ivox, i thought that the setting for the view in Rhino didn't affect the output you get in meshdensity when you export your model as MXS for use it Maxwell Studio. But if that's the case then i'm for sure surprised. Gonna give that a go to, thanks for the tip

Becco, yes it should be triangulated but why isn't the Rhino plugin for Maxwell doing that as you export a MXS file via it.. that's what i'm curious about. Now as you can see it has both quads and tri's in it.

Maybe i'm just having a extra special stupid day today with this as everything i do goes wrong today. Still it makes me wonder if i did right or wrong or if Maxwell did this.

/ Max

[Becco_UK]

Maximus3D: I know next to nothing about Rhino (I always thought it was an horned animal) but it looks as though it or the plugin is doing things correctly that would work in most, if not all render engines. Apart from Maxwell Render, engines take care of triangulation internally and invisible to the user at render time. With Maxwell you have an unessary step of having to triangulate mesh.

The Rhino Maxwell plugin should take care of the triangulation but doesn't seem to like working weekends. Is there a way to triangulate within Rhino?

[ivox3]

Well, I think it does ....I've never technically nailed this issue down ..,but if I render something ...let's say a sphere ---- and it renders 'polygonal', and I adjust the object with mesh settings for something a bit denser(keeping object a NURB) ...then it renders fine. So I have to conclude that it does. ...no?

[NicoR44]

Hi Max,

Nice test, and indeed as Iker says use the MeshingManager that really works great!!

ivox, i thought that the setting for the view in Rhino didn't affect the output you get in mesh density when you export your model as MXS for use it Maxwell Studio. But if that's the case then h'm for sure surprised. Gonna give that a go to, thanks for the tip

it's a good thing that meshes aren't rebuild by the plug-in because then you will loose the ability to control your mesh output.
And for large scene's it would take for ever to rebuild the mesh when you press the render button, by using the MeshingManager you can choose what object will be dense or not.

[ivox3]

yes yes, ...Nico / Iker are right .... end of story.

[iker]

Maximus, MeshingManager is a new command that comes in the last SR4, it is the same you do with the rendermesh settings but more selective (you choose the exact quantity of polygons you need for each object).

...it is not the slider to increase/decrease polygons when you are exporting geometry.

EDIT: oooopppss late!

[NicoR44]

yes yes, ...Nico / Iker are right .... end of story.

[Maximus3D]

Thanks guys i appreciate all your feedback and help on this thing.

Becco, hehe yea it's a horned animal thingy. there are ways to triangulate models in Rhino as everyone here been suggesting and that's what i'm gonna do from now on to avoid this nasty problem.

ivox, yep true that. It gotta be pre-meshed before rendering.

Nico, i got the latest SR installed for Rhino 3 with all the bling-bling but i must seriously have a stupid day today as i cannot find a MeshingManager there anywhere. Usually i just use the convert to polys slider thingy to get my meshes as polys of various densities.

iker, thanks but i got that installed yet still cannot find it. But i'll see what i can do about that, thanks for your tip

Phew! too much to type hehe thanx all of you

/ Max

[NicoR44]

I will look it up for you so you can download it

[NicoR44]

http://rapidshare.de/files/11501758/Ren ... s.zip.html