Testing physics proprieties of light in Octane

[FractalBuddha]

As technician in physics, I enjoy doing these tests

[Proupin]

I just did not lit the yellow light
Yes, I changed the configuration of the scene to see the reflection on a wall. TIR ?

I think birefringence could be easy to add I think, they just have to add a second index in the proprieties.
I will make test, but an absorption texture mapping could maybe give the impression of anisotropy ?
I wonder how polarization could affect the render of a scene. You have to wear polarized glasses to see or hide polarized zones.

I hope someone will show me how to have shadow with SSS with sun lightning.

TIR, total internal reflection I'ma lazy typer... The dimmer looking light intensities are probably right, but instead your pathtracing caustics produce very bright fireflies giving the impression of a much brighter beam I think.

As far as I know, birefringence does split the light based on polarization, so having polarized light would allow for the former. A polarized filter (or glasses) are useful for blocking reflections, but other than that not that useful.

Hoping for some anisotropy tests, although I don't know how absorption could help you. Good luck have fun.

[radiance]

Hi guys,

There is no solution to diffraction possible with raytracers at this time, without waiting a year for a render to finish

We are working on a solution for shadows and transmittance of sunlight for upcoming releases...

Radiance

[FractalBuddha]

Birefringence ( double index of refraction ) Worked
Theory : http://en.wikipedia.org/wiki/Birefringence
For the glass bloc on the right, I simply made a mix material with different index.

[gabrielefx]

how you built the 3d lasers? are emitters inside a box?

[FractalBuddha]

Yes, the lasers are simply an emitter at the extremity of the box. The long box prevent the dispersion of the light. Longer is the box, more parallel is the ray.

[gabrielefx]

Yes, the lasers are simply an emitter at the extremity of the box. The long box prevent the dispersion of the light. Longer is the box, more parallel is the ray.

would be nice to have coherent emitters

could you simulate this with lenses? A real beam projector could be simulated?

Is it possible to create a polarizer?

[FractalBuddha]

I'm not sure of the utility of a coherent light, or wave proprieties in this kind of render engine.
Pass light trough a lens don't give good results, as you see in my first results, not allot of light exit from glass...

[Proupin]

ok, Ill give the mix material a pass for now, although I bet it doesn't behave like a birefringent would when spun hehe science!

[jmfowler]

Keep going - I'm loving seeing your results!