Lighting a volume with a bi-color point light (2)

Asked Apr 15 '15 at 12:24

Active Mar 07 '23 at 21:08

Viewed 266 times

This question is a following of this one

I would like to light the center of a cylindric volume with a gradient light White -> Red -> Blue radially from the center to the border.

I made a test of the lighting one a plane mesh and get this result (after some settings) :

enter image description here

The color gradient is OK

Now I renderer the cylindric volume at the same position than the plane.
And I have this result :

enter image description here

This is nearly what I want.

Nearly, because I had in idea to see a white glow inside the volume and the outter volume seems to hide the center of the object.

I tried to change the density, reflection, and scattering settings of the volume but I didn't succeed to see the white glow.

Is it possible to give transparency to a volume and see the inside lighting with special settings ? Or not ?

edited Apr 13 '17 at 12:57

Community

asked Apr 15 '15 at 12:24

JeanJouX

transparency = density with volumes. If your inside is really white glowing as you claim, make the center more dense and the outside less dense. I am sure you will see the center. – Jaroslav Jerryno Novotny Apr 15 '15 at 14:55
2

It would be better not to light the volume with a light but let the volume emit light itself - with an added emission shader. The center could have more strength than outsides and you can control the color easily imho. – Jaroslav Jerryno Novotny Apr 15 '15 at 14:58
@Jerryno Note that volumes can't actually emit light in BI (as in illuminate other objects) – gandalf3 Apr 15 '15 at 18:50
@gandalf3 oh this isn't cycles..you are right – Jaroslav Jerryno Novotny Apr 15 '15 at 19:25
Related: http://blender.stackexchange.com/a/14469/599 – gandalf3 Apr 15 '15 at 19:27

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