Bug, or Feature - diffuse transmitter to simulate sanded gla
Posted: Sat Oct 13, 2012 4:55 am
I've been wanting to post this question for a while now. I came across it almost a year ago when I started rendering my lighting system concepts a little more in detail. I came across this again when rending my latest creation:
http://www.indigorenderer.com/forum/vie ... =4&t=11916
So here are two images to illustrate what I am talking about. One is a photo and the other a rendering.
Te part of concern is the round acrylic glass disk that has the little acrylic rods solvent welded to it. The ends of these rods are not polished but just sanded. Can be seen in both images due to the sanded diffusing surface the glow quite nicely and provide another little point of interest on the lamps.
When building the lighting system I never thought about this and it was a nice surprise. Then, of course I hoped to be able to replicate this in Blendigo/ Indigo and found that I could do that through a combination of, one in Blender, and one in Indigo. I've not been able to reproduce this in Blender.
The glass disc and the glass cylinder are two separate meshes, with the glass cylinder protruding into the glass disc. As in in reality, in Indigo both have the same material assigned to them. Then I assigned a different material only to the end caps. I chose a clossy-specular, but I don't think it matters. What matters is that it needs to be a material that has a medium, e.g. Glass. Diffuse transparent does not have a medium, at least none shows up in Te Indigo UI when exported from Blender.
With that exported the little end caps on the acrylic rods remain black/ transparent as they would when polished. Now, heres's the trick where I am not sure what I am doing is entirely valid. I stop the render and change the material of the end caps only from glossy-specular to diffuse- transmitter and voilà, there are my nicely diffusing, glowing end caps.
Is there a way to make this work directly through Blendigo that I am not aware of ?
Is this even a valid - approach ?
http://www.indigorenderer.com/forum/vie ... =4&t=11916
So here are two images to illustrate what I am talking about. One is a photo and the other a rendering.
Te part of concern is the round acrylic glass disk that has the little acrylic rods solvent welded to it. The ends of these rods are not polished but just sanded. Can be seen in both images due to the sanded diffusing surface the glow quite nicely and provide another little point of interest on the lamps.
When building the lighting system I never thought about this and it was a nice surprise. Then, of course I hoped to be able to replicate this in Blendigo/ Indigo and found that I could do that through a combination of, one in Blender, and one in Indigo. I've not been able to reproduce this in Blender.
The glass disc and the glass cylinder are two separate meshes, with the glass cylinder protruding into the glass disc. As in in reality, in Indigo both have the same material assigned to them. Then I assigned a different material only to the end caps. I chose a clossy-specular, but I don't think it matters. What matters is that it needs to be a material that has a medium, e.g. Glass. Diffuse transparent does not have a medium, at least none shows up in Te Indigo UI when exported from Blender.
With that exported the little end caps on the acrylic rods remain black/ transparent as they would when polished. Now, heres's the trick where I am not sure what I am doing is entirely valid. I stop the render and change the material of the end caps only from glossy-specular to diffuse- transmitter and voilà, there are my nicely diffusing, glowing end caps.
Is there a way to make this work directly through Blendigo that I am not aware of ?
Is this even a valid - approach ?