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Green Glass Help
Posted: Tue Sep 22, 2009 9:06 pm
by ideas_arte
Good day gentlemen.
I'm fascinated by Indigo, even though I am inexperienced and lacks many things to learn.
I need to create a material like glass or like this:
First try assigning TintedGlass, but not like when you go up the value to reflect
begins to look like metal and is not what I need.
I went to try some MaterialDataBase and materials here (Topaz, Emerald, SafetyGlass)
but none helped me.
I'm using Skindigo 2.012b • SketchUp 7 • Mac OSx 10.6.1 • and made the change on file extension .PIGM by. IGM
Could someone help me?
In advance many thanks.
Re: Green Glass Help
Posted: Tue Sep 22, 2009 11:25 pm
by Borgleader
Dont change the file name from .pigm to .igm, you have to extract the .igm from the .pigm (.igm = indigo material, pigm = packed indigo material)
Re: Green Glass Help
Posted: Tue Sep 22, 2009 11:28 pm
by PureSpider
You need to higher the absorption instead of the reflection value tu make it more green.
Re: Green Glass Help
Posted: Tue Sep 22, 2009 11:36 pm
by Borgleader
PureSpider wrote:You need to higher the absorption instead of the reflection value tu make it more green.
Yes, forgot to mention that earlier, or I think you can increase the gain value. You can always test your changes with the preview function and render once you're happy with the results
Re: Green Glass Help
Posted: Tue Sep 22, 2009 11:41 pm
by dakiru
Hi ideas_arte. Try this one: specular transparent material with IOR 1.57 and "your green color" absorb gain 5.0. Here what i've got with these settings in Blendigo (1.4m x 2m x 0.008m) :
- green_glass.png (227.96 KiB) Viewed 19893 times
Code: Select all
<?xml version="1.0" encoding="utf-8"?>
<scenedata>
<medium>
<name>green_glass</name>
<precedence>10</precedence>
<basic>
<ior>1.57</ior>
<cauchy_b_coeff>0</cauchy_b_coeff>
<absorption_coefficient_spectrum>
<rgb>
<rgb>5 2.13177 3.34433</rgb>
<gamma>2.2</gamma>
</rgb>
</absorption_coefficient_spectrum>
</basic>
</medium>
<material>
<name>green_glass</name>
<specular>
<transparent>true</transparent>
<internal_medium_name>green_glass</internal_medium_name>
</specular>
</material>
</scenedata>
Re: Green Glass Help
Posted: Wed Sep 23, 2009 1:57 am
by Whaat
The tinted glass preset in SkIndigo (like all media) requires that you model your glass true scale. If your glass is about 8mm-13mm thick it should look fine. If you want more color, increase the opacity slider in the SketchUp material editor. This is like increasing the 'gain' of the absorption.
Also, PIGM importing does not work yet on Mac. You have to first extract the IGM and then you can load it into SkIndigo.
Re: Green Glass Help
Posted: Wed Sep 23, 2009 3:44 am
by ideas_arte
Many, thank you very much!
I learned a lot today.
I am indebted boys.
@ Whaat: just gave it right. Now everything is perfect.
Although I came another question, or is it a bug?
with Eneable Aperture Diffraction is more evident:
I'll publish it in the appropriate section.
Greetings.
Re: Green Glass Help
Posted: Wed Sep 23, 2009 8:47 am
by benn
Ideas, they are called fireflies, you can sometimes fix them by rendering with metropolis raytracing off.
Re: Green Glass Help
Posted: Wed Sep 23, 2009 11:55 am
by ideas_arte
benn wrote:Ideas, they are called fireflies, you can sometimes fix them by rendering with metropolis raytracing off.
Thanks Mr benn, not like turning off the Metropolis Raytracing.
What I did was change the method:
And this was the result:
Thank you very much again.
Re: Green Glass Help
Posted: Wed Sep 23, 2009 2:57 pm
by cpfresh
great looking glass ideas_arte. what we need now is a shader that will give the glass that slight wave that sheet glass gets.
edit* actually whaat's water shader would probably work great at the right scale.
Re: Green Glass Help
Posted: Wed Sep 23, 2009 6:29 pm
by zeitmeister
Sorry, what do you mean with "wave"?
Maybe a large, subtle noise as a bumpmap could do the trick?
Re: Green Glass Help
Posted: Thu Sep 24, 2009 3:25 pm
by CTZn
Any smooth and subtle bump, to break with flatness
Looking forward to that shader test !
Re: Green Glass Help
Posted: Sun Jan 10, 2010 12:28 am
by galinette
Nice render.
I may provide soon some "real" coated architecture glass models soon (check my new topic). These glasses are very difficult to physically reproduce if you do not have the data, but you have found some esthetic hacks to give good look.
These glasses have surfacic spectrally dependant reflection, transmission and absorption due to the coating. They are asymetric (reflection color is very different on both sides). And aditionnaly, the glass medium absorbs some colors too.
As soon as there is no intellectual property issues, I should be able to provide materials for real building coated glass (I have acces to all these datas)
Regards,
Etienne
Re: Green Glass Help
Posted: Wed Jan 13, 2010 10:25 am
by CTZn