Steps to adding an emissive shader to a new primitive

dash2128

As seen in the attached pictures, I am attempting to (learn how) to add emissive lights to scenes.

What are the steps to make a new primitive emit light and cause the other primitive- the sphere- to glow?

(I was using Iray, can it be done in 3d-delight?)

I was able to add a shader to both, but could not get the pane to light the sphere. 

(Also, I am not sure how to darken the scene, so as to better see it.)

 

  

mjc1016

In Iray, under Render Settings, make sure you have Dome and Scene or Scene only selected, because if you have Dome only, then the missives won't show.

You will also have to adjust the Luminance values of the emissive objects to get them to the level you need.

dash2128

Thank you!

When you say 'Luminance values'...- in rendor setting?  Surfaces?   (I wasn't sure what/were) 

Sven Dullah

In 3DL, select the plane in the scene tab and the surface tab, apply the uber area light shader, adjust shadowsamples and intensity in the surface tab!

Or use the reflective-radiance-for-3delight !

dash2128

Thank you!  Whatever information and steps I can gather, I am using.  (including product suggestions) 

Silent Winter

To adjust the luminance - go into the surfaces tab, scroll down to 'Emission Colour' (anything not pure black will emit light and reveal the next few options).

Set Emission temperature to 6500 for pure white light (or whatever colour is in Emission colour) and lower that for a red-shift, raise it for a blue-shift.

Two-sided light can be used, but if you  don't need it, turn it off (to save processing power - so a sphere only needs to emit light to the outside, not the inside).

Luminance value is too weak at the default - best to set the units to kcd/m^2 (change from cd/m^2 - k=kilo=1000 )

Then it depends how far the light-source is from the object it's lighting but 1000 kcd/m^2 is a good starting point to increase/decrease from.

 

Note that a sphere has many polygons - each one will be a light-source - so that takes more power than using a simple plane with only one poly.  Use what you need for the scene.

dash2128

Very good instructions!

Thank you!