water

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lape
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water

Post by lape » Tue Mar 05, 2013 7:50 am

After reading through the forum and several failed attempts to create some realistic pool water (or water in general) I hope someone can push me into the right direction... though this probably was asked many times before :roll:

What I did so far:
-modeled a containern in sketchup
-modeled the water intersecting the container walls about 1mm
-tried to use the materials from the database like pool water and rippled water

I couldn't achiev any ripples or waves at all. Do I need to add a bump map or displacement map to get the waves? Or do I have to model the surface of the water in sketchup? :?

I'm using Indigo RT.
Attachments
water1.jpg
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Antonis777
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Re: water

Post by Antonis777 » Tue Mar 05, 2013 8:30 am

Try adding a bump map
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940-bump.jpg

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CTZn
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Re: water

Post by CTZn » Tue Mar 05, 2013 9:08 am

use it as a displacement for best results in closer shots. Bump will do well otherwise, normal maps would make a nice compromise.

The database waters describes only the water medium, there is no surface detail involved most often.
obsolete asset

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lape
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Re: water

Post by lape » Tue Mar 05, 2013 9:38 am

Ah, ok! Thanks for the map and for the hints. Now I get some waves. Unfortunately they are far too small. Is there also a button for scaling the displacement map? Or do i have to scale the map with PS?

Again some very basic question, but I just can't find the button... :?
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galinette
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Re: water

Post by galinette » Tue Mar 05, 2013 9:51 am

lape wrote:Ah, ok! Thanks for the map and for the hints. Now I get some waves. Unfortunately they are far too small. Is there also a button for scaling the displacement map? Or do i have to scale the map with PS?

Again some very basic question, but I just can't find the button... :?
Hi,
You can multiply the values of any texture by changing the "B" (scale) texture parameter in skindigo


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lape
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Re: water

Post by lape » Tue Mar 05, 2013 10:01 am

The "B" parameter gives me the wave height or the size of the displacement, not the size overall. I would like to change the waves in length and width, and because there is no diffuse texture in Sketchup for my water, I can't scale the displacement map. :?:
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OnoSendai
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Re: water

Post by OnoSendai » Tue Mar 05, 2013 10:24 am


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lape
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Re: water

Post by lape » Tue Mar 05, 2013 10:42 am

my fault, should have tried first before writing and asking...
thanks anyway :)
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water2.jpg
24 hours isn't enough
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galinette
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Re: water

Post by galinette » Tue Mar 05, 2013 10:47 am

Yes, you can always define a texture in sketchup even if diffuse is disabled in skindigo. This will texture-map all the indigo textures.
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Pibuz
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Re: water

Post by Pibuz » Thu Mar 07, 2013 6:40 am

..Lape..how did you get it to work...
I've never been able to render water pool caustics at all! Please give me a hand...

EDIT: disabling GPU contribution actually makes it a little easier.. :lol:
but still caustics are far from being calculated! damn

RE-EDIT: ..maybe I'm only a little too impatient..
Something is kinda going on under there... mmmmmhh... time to update my hardware?

BTW: what were your render settings? Supersample, resolution, glass acceleration on or off, method...

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CTZn
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Re: water

Post by CTZn » Thu Mar 07, 2013 6:50 am

Small tips: the stronger the relief, the shorther the focus plane for caustics. Test it on a sloppy bottom. A single surface is enough for water ponds, provided that they intersect entirely.
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lape
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Re: water

Post by lape » Thu Mar 07, 2013 9:03 am

Pibuz wrote:..Lape..how did you get it to work...
I've never been able to render water pool caustics at all! Please give me a hand...

EDIT: disabling GPU contribution actually makes it a little easier.. :lol:
but still caustics are far from being calculated! damn

RE-EDIT: ..maybe I'm only a little too impatient..
Something is kinda going on under there... mmmmmhh... time to update my hardware?

BTW: what were your render settings? Supersample, resolution, glass acceleration on or off, method...

uuuuhhh, I, as an Indigo-noob should teach a long time Indigo user how to achieve pool caustics... :wink:
ok, see my attached settings....

Let me see what you can teach me (I know it is a lot):
WHERE do i find this damn double sided material for Skindigo??? I've tried to create realistic leaves for my plants, but I was not very successful using a blend material. And where is the "diffuse transmitter" material in SkIndigo? Or is this just some diffuse material with opacity set up in Sketchup?
Attachments
settings pool caustics_1.jpg
water3.jpg
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Pibuz
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Re: water

Post by Pibuz » Thu Mar 07, 2013 9:45 am

Sorry Lape: is that just a plane, the geometry you attached the displacing map to?

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lape
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Re: water

Post by lape » Thu Mar 07, 2013 9:50 am

Pibuz wrote:Sorry Lape: is that just a plane, the geometry you attached the displacing map to?
No, it's a cube intersecting the pool walls about 1mm.
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Pibuz
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Re: water

Post by Pibuz » Thu Mar 07, 2013 9:55 am

And the same material is attached to all the other faces?
I saw I have samw results when using a much more simple specular mat for the non-visible faces, in order to spare some memory since the diaplacement iterations can be quite heavy to carry, RAM wise.. I'll post my try later thanks a lot mate!

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