[REQ] light level / radiance

Feature requests, bug reports and related discussion
StompinTom
Indigo 100
Posts: 1808
Joined: Mon Sep 04, 2006 3:33 pm

Re: [REQ] light level / radiance

Post by StompinTom » Sun May 27, 2018 12:21 pm

Also take into account what reflectance the surface (-s) have, the size of the space.
I'm measuring directly off the light source. Its diffuse color is (0,0,0) so that it doesn't pick up any extra light.
Keep in mind that the calculations use the centre of the light source as origin, thus using a surface of 1x1m may not be accurate.
I'm not sure what you mean by that? Surely it's just a scaling factor and the illumination is even across the plane?

User avatar
Juju
Posts: 264
Joined: Sat Mar 17, 2007 3:49 am
Location: South Africa

Re: [REQ] light level / radiance

Post by Juju » Mon May 28, 2018 4:51 am

StompinTom wrote:
Sun May 27, 2018 12:21 pm
I'm not sure what you mean by that? Surely it's just a scaling factor and the illumination is even across the plane?
Point light calculation employs the inverse square law, it gets progressively weaker the further it is measured form the origin.

The light origin is taken as the center of of the light source.

StompinTom
Indigo 100
Posts: 1808
Joined: Mon Sep 04, 2006 3:33 pm

Re: [REQ] light level / radiance

Post by StompinTom » Mon May 28, 2018 10:57 am

Juju wrote:
Mon May 28, 2018 4:51 am
Point light calculation employs the inverse square law, it gets progressively weaker the further it is measured form the origin.

The light origin is taken as the center of of the light source.
There are no point lights in Indigo.. ?

User avatar
Juju
Posts: 264
Joined: Sat Mar 17, 2007 3:49 am
Location: South Africa

Re: [REQ] light level / radiance

Post by Juju » Mon May 28, 2018 6:23 pm

The term "point light calculation" refers to the mathematical method which electrical / lighting / illumination engineers use.

User avatar
Juju
Posts: 264
Joined: Sat Mar 17, 2007 3:49 am
Location: South Africa

Re: [REQ] light level / radiance

Post by Juju » Thu Jul 12, 2018 8:26 am

OnoSendai wrote:
Thu Feb 02, 2017 1:05 am
Hi Juju,
THis would be cool to add, we just have a lot of stuff to do right now.
Maybe after 4.0 is done.
** cough cough ** BUMP 8)
Indigo 4 | skIndigo | SUpro 2018

Post Reply
20 posts

Who is online

Users browsing this forum: No registered users and 0 guests