lightflow,G.I.,question


(rixtr66) #1

O.K.i can render with lightflow ok,but i cant get the gi or my lighting to
look decent,i have used the ambi ext,and the _plight ext.
but they dont work.what do i have to adjust or add in the pyth.file
to get my light dome to work?parameters?i have read through the
docs but i didnt see anything about gi(specific)
i have read all the tutes too,i would be eternally greatfull if someone
could help me out!!

rixtr


(eeshlo) #2

I’m currently working hard to update the script which will make things easier a bit , hopefully I will release a preliminary version later this week. To answer your question, what you want to use is the WORLD_LIGHT variable. Set it to 1, this will autmatically create an ambient lightsphere around your scene. The color can be controlled with the WORLD_COLOR parameters, the numbers you see in the script are for red, green and blue in that order. They don’t have to be in the range 0 to 1, if you find the picture to dark you can use higher values. The size of the lightsphere must be large enough to contain your scene, you can control it with the WORLD_SIZE parameter. And finally, if you want to use a texture to do image based lighting (which is not the same as HDRI), you can use the WORLD_TEX variable, which must be the full path to a valid .tga picture. This must be a spherical texture image, the sort you can find with my HDR script or images as used by panorama viewers.
The WORLD_LIGHT option only works with radiosity enabled, you also don’t need any lights at all, they can be used of course, but without lights rendering will be a lot faster.
Hope this helps a bit…


(hannibar) #3

I have another question on lightflow, ill ask it in this thread.
How can you do those nice colourbleeding effects in LF? I have read the documentation, but I can’t seem to find big differences with the .py files I render with. Is there something I haven’t seen maybe?

-hans-


(eeshlo) #4

You only will be able to see colorbleeding when you have radiosity enabled, but even then the effect might be subtle. It depends on how far objects are from eachother as well as the area of the surface of the objects. A small red sphere in a white room is not going to have much effect on the room (only where it rests on the floor), whereas a white sphere in a red room will definitly get a strong red tint. It also helps to use real lights in this case.


(hannibar) #5

Ah thanks.