Hello everybody.
I have a couple of question about Blender and Yafray.
1.- I want to create some light fixtures for a night scene and I would like to know how to make the lamps visible. Most of 3D software have a feature to turn visibility of light on.
2.- How to set up the ligth fixture screen to have a backlit effect. I tried translucency but I think that it does not show.
3._ Where can I find a matterials or deffinition of it to be used in Yafray.
Thanks so much!!
I don’t think you can make lights visible in either blender or yafray but you can fake it by modeling a light fixture and turning up emit to full so it looks like a light bulb or something. Then you can have a blender or yafray light doing the real light in the scene.
I don’t know about the other 2 questions.
Paradox
Do you mean the guidelines of where the light will be directed?
Nr.1: Change the lamp into a spotlight then press halo button.
Lamps are not visible. That’s the beauty of it. If you want to make a lamp visible, just model it and give the light bulb an emit value.
To make the screen translucent so you can see the fixture :
Place an extra point light (in case of a bulb). Remember, lots of stuff has to be faked. And that counts for the other packages too.
no, you cannot just model a lamp and give it an emit value, unless you are using radiosity. to make a lamp, model it, and add blender lamps around to make it light. You can add emit to make it look bright, but it will not cast light onto other objects.
Just a quick question to add to this thread…
What’s the best way to give a light source (eg: Spotlight) Vertex halo artifacts?
ie: A spotlight with lens flare and rings ?
Do I just parent a single vertex object to it and give the vertex a halo material or what?
This is one of the only things I miss about Cinema4D (Apart from the Price and the abillity to add a “glow” to a material, but enough already!)
I think you’ve given the answer to my answer. I know that if you give it a emit value it won’t cast light. The emit value is to make the lightsource visible as though it is realy casting light. I said that a lot should be faked. By that I mean: For example: A incandensant sigarette butt in the dark. You should give it a low emit value with a red colour. And around the butt you should place some lamps that cast light.
The answer the vertex halo question. I’m not sure what you mean by vertex halo. But if you mean that you want to target you’re lens flares , then yes, it is best to parent (although I use track) to a single vertex. But I don’t know what you are shooting for. In some cases it won’t work like you intent too. i.e: A sunny day at a Miami beach. The camera pans away from the sun to the beach. You see the flickering lens flares. Now, say, we use a spot light and a vertex Flare. The sun won’t show up because it has to be modelled (+ emit). A spot light won’t work because the sun is not a spot light. Use a emit. But the direction of the sun light doesn’t change in this time frame, so there is no use parenting a flare to a light. I suggest just using the vertex flare and animate it. Animate the material too so it appears to be flickering.
you could create a lamp like object and and turn that object into halos and place the lamp in the same position… just a theory i might play with tonight.