Day & Night facade

[jophus14]

I am looking to create glass similar to that of the images attached. In the day shot, the glass is jade in color and probably backpainted. At night, the glass has a dramatic gradient look but it white in color. I want to create the glass in the night image. I have tried using vray2sided material, applying a gradient ramp on my glass material and Vray lights in various locations. I can't get it to look right. Any ideas? Thanks. The building is the Arthur Miller Theatre.

[stevesideas]

It looks to me like a highly reflective material with glossy refractions. I would use fog to create the bluish colour..not too strong. Create a box (the correct thickness for the glass panelling) and then apply the aforementioned material to it. The light is coming from inside, so you could create a box or plane behind these panels..set it slightly smaller and further away from the camera and then apply a vraylightmaterial to it. Thats how I would start out anyway..

[jophus14]

Thanks for the comment. I going to try that out today. It just seems like the intensity of the light would have to be pretty strong in order to product a "glow" behind the green glass making it look almost transparent. I would probably have to apply a gradient to the VrayLight material so it resembles the picture. I just hope my lighting doesn't start to look blown out because of the intensity.

[stevesideas]

You shouldnt need the intesity that high. The fact you have a glossy refractive surface in front of a vray light or vraylightmtl should create that effect automatically. Obviously in blown out areas you can use reinhard and reduce the burn..

[rmejia]

It just seems like the intensity of the light would have to be pretty strong in order to product a "glow" behind the green glass making it look almost transparent.

Not necessarily. During the day the sun is many times brighter than any interior light so the interior will always look dark, but at night the interior with perhaps little light will be brighter than the exterior night making the interior visible.

The light source in the picture appears to be around where the Theater letters are located. Have you tried placing a couple of VRayIES around that area. Do you have any images of your results?

[jophus14]

Sorry for the late reply. Work got crazy and I haven't been able to do any tests on the scene. I have never used the VrayIES option. I have used the standard IES plenty of times so I'll have to read up on the VrayIES option.

Stevesideas: From your original post you mentioned creating a pane of glass, then a second piece of geometry slightly smaller in size with a VrayLightMateial applied to it. This is somewhat similar to my original idea. I created glass panels with a slight green tint to it, then put a piece of geometry about 2 feet back off of the glass with a gradient mapped Vray2Sided material on it and a VrayLight behind that to give it a glowing look. I also placed a VrayLight pointing upward on the bottom panel of the glass opening to disperse light upward along the glass face. See attached

[stevesideas]

You could just create a vraylight that is angled back. The end at the bottom closer to the glass and the top end further away. That should create the gradient effect as it looks like more light is coming from the bottom.
I dont think you need the plane with a vray2sided mat on it. If you have a glossy (blurry) glass panel (the main panel), then that should create the glow effect. I reckon about .85 glossy refraction, maybe a bit more. Turn on interpolation as well (if its a still).