[pascaldechine]

Hi everybody!

I just intalled the 1.7....looks quite nice.

I am working on some furnitures garden with a wooden floor.

First, I wanted to use the physical sky. But it really looks difficult with all those new parameter to set. It looks like with have to a professionnal in meteo or something just to make a sky. And finally, my rendering with my materials weren't realistic at all. Too bad!

Second I wanted to try the displacemeent to make my floor. To make it little bit more realistic. My god! I spend all day long to work on it and to get a diform floor. I used a displacemenet map in 16bites. But Nothing change; So finally I download some materials pretty interesting on the maxwell librairy to use them on my rendering, just to see what's going on.
Surprise: same probleme.

Now, I really don't know how to make the deplacement working. Maybe it's my surface...but I really don't know how solve this problem.

Anybody has an idea?

Thanks

Pascal

[JDHill]

Hi Pascal,

To help, we would really need some information about how your displacement isn't working. Some images would be good.

Regarding the sky parameters, you can:

- consult the 'what's_new_in1.7_guid.pdf' file in your Maxwell\manual directory
- in Scene Manager > Environment Settings toolbar, toggle on the help icon. This will show some help when you select the different sky parameters
- also in Scene Manager > Environment Settings toolbar, there is a button you can use to load a .sky file. There are several preset .sky files located in your Maxwell\skies folder

JD

[pascaldechine]

hi JD,

For the displacement, I usually create a surface and after I apply my material. Quite basic in fact.

The point is when I apply a material with a displacement effect , either it's not working at all. I just have a mapping of my images without displacement at all or I have something completly disform by the displacement effect.

I ask a friend of mine who told me to use the bump effect, but with the bump, I have no effect of deepness of a wooden floor.

I read again the manual of 1.7, but I still doesn,t understand how does it works. I saw some amazing materials with displacement; even I havent a clue who explain me how to do my own materials.

It said on the manual that it need an objet with UVs, but I try, nothing new happened. The offset parameter, same.

I am totally lost with this. I used to do it long time ago with 3ds, it was really easy and efficient but here, whooaaa, it's like I discover the software. And I use maxwell since the alpha version.

I will try tomorrow to post some image of my stuff to show you

Thanks
Pascal

[Maximus3D]

Mapping a displacement like that on a normal plane in Rhino will probably not end up in a good looking result because Rhino will not generate lots of polys for the mesh plane and that will in turn make your displacement look all weird and incorrect. A denser triangulated mesh will help Maxwell output a better looking displacement once rendered.

/ Max

[iker]

Try checking on your materials -----> Displacement>Surface>Precision>Adaptative

[Polyxo]

For a normal (relatively even) wooden floor I'd say a bump map is the better bet. It renders much faster and gives a great illusion of relief.

The result of the displacement is indeed dependant of the underlying mesh. Try to set the rendermesh to a even spacing. For this simple plane you can set the aspect ratio to 1:1. This should give you a perfect quad mesh as a basis for your displacement-experiments.

[JDHill]

I would rather bypass the Rhino mesher entirely and use a mesh plane (i.e. command: MeshPlane) for the surface which will be displaced - then you can directly decide how dense the mesh will be.

[pascaldechine]

Thanks for you answers...

I try one more time this morning to figure how does it work. Nothing new.
So I made several screenshot to show what's going on when I use displacement or bum function.

Here it is try with a material I downloaded:



Pretty strange!!

Here, I try with just a bump effect...nothing. I try after with displacement, same result with my material.



The setting of material (wooden teck floor):



I still doesn't understand very well how "height" and "offset" works. Same for offset X and Y. Basically, except tp map a picture without deepness effect, I never get a bump or displacement effect since I use rhino and maxwell. Sure, I do something wrong, but no idea what.

I did what you suggest JDHill, using MeshPlane command. I put X:50 and Y:50. Nothing change.
The size of the floor is arround 4mx8m. It's just a try actually, I will definitly set up the right dimension after understand the displacement and bump effect.

Here I found this on rhino, not a clue how does it work:



And this, after read an help about rhino and maxwell:



And same, not a clue to know how does it works.


So basically, I am a real beginner for mapping on rhino-maxwell. I hope this will help you to understand my problem.

Thanks for you help.
Pascal

[iker]

Have you tried with "adaptative" already?

[pascaldechine]

OK, After several test, here is the result:

I created a surface 3000x3000 with MeshPlane and X:200 by Y:200

Test 01:

With displacement:
Height: 20 with Abs. (cm)
Offset: 0.5




Test 02:

With displacement:
Height: 7 with Abs. (cm)
Offset: 0




Test 03:

With displacement:
Height: 7 with Abs. (cm)
Offset: 1




Test 04:

With displacement:
Height: 7 with Abs. (cm)
Offset: 1
Contrast map: 100 (to make the make really darker)




Test 05:

With displacement:
Height: 7 with Abs. (cm)
Offset: 1
Contrast map: 100 (to make the make really darker)
Precision: 128




Test 06:

No displacement
Just the bump at 50




Test 07:

With displacement:
Height: 7 with Abs. (cm)
Offset: 1
Contrast map: 100 (to make the make really darker)
Precision: 128
Adaptive: On




So as you can, when I use the displacement, the offset goes on both direction (up and down). I don't know how to push it to go only down.
The result is not really nice, even with the setting Precision at 128.
And the bump, no effect at all.

I have no more idea now....

Pascal

[tom]

Hi Pascal,

I think you'd like to check this scene:
http://www.divshare.com/download/4999801-71b


*This is an APNG image. View it animated on Mozilla Firefox!

- Always use realistic heights. In your example, an absolute height of 20 or 7 cm is extremely high.
- Use offset 0 for keeping the object surface at a certain position. Meanwhile, know that only absolute blacks in your texture will make no elevation.
- Turn on both Filtering for displacement texture and Smoothing on the displacement panel.

[pascaldechine]

Hi Tom,

Thanks for you scene...
I didn't have time to reply to your post before today.

I tried your scene, pretty amazing. Really helpfull!

But in fact I realize, based on your scene and your material, what was wrong with my materials: the map.
In fact you have a really good map for your wooden floor. And I dont have this kind of map, so of course, I cannot achieve the same result. Specially, I wanted a wooden boat deck effect. And I didn't have a good map, so finally I made in 3D the floor and just put a basic wood texture.

Anyway, thanks a lot for your help. I understand better the displacement now!

Now, I have to focus more on how to improve my outdoor rendering with a physical sky.

thanks again

Pascal

[tom]

Happy to hear that