Tue, Jan 21, 4:51 PM CST

Renderosity Forums / Poser - OFFICIAL



Welcome to the Poser - OFFICIAL Forum

Forum Coordinators: RedPhantom

Poser - OFFICIAL F.A.Q (Last Updated: 2025 Jan 21 4:30 pm)



Subject: Point lights....


MikeJ ( ) posted Sun, 12 April 2009 at 11:58 AM · edited Tue, 14 January 2025 at 1:51 AM

Should I assume there's no way to control falloff for point lights in Poser Pro?
I don't think they've changed much since Poser .01 Alpha back in 1972, but maybe the material room has some sort of way to adjust falloff?

The new Poser Pro, that is. Why they decided to give it a name that had already been taken is beyond me, and I refuse to type Smith Micro Poser Pro all the time.



Khai ( ) posted Sun, 12 April 2009 at 12:05 PM

look at the stop parameter on the Point Lights. you can use that to simulate fall off.


ockham ( ) posted Sun, 12 April 2009 at 12:08 PM

Dist Start and Dist End are the relevant controls.   The light is full out to
the distance of Dist Start, then falls off to zero at the distance of Dist End.

My python page
My ShareCG freebies


MikeJ ( ) posted Sun, 12 April 2009 at 12:15 PM · edited Sun, 12 April 2009 at 12:16 PM

Thanks, I'll try that.
Khai, I'm not seeing a stop parameter for the point light,
The Dist Start and Dist End are under a category of Spotlight, even when the light is a point light. I was trying that but it wasn't doing anything while dragging the sliders.
Turns out the light was locked. Oops. ;-)

Thanks again.



ockham ( ) posted Sun, 12 April 2009 at 12:31 PM

Yes, the Spotlight category is an odd way to show it.   The Point light
seems to have been an afterthought, never quite firmed up in terms
of workspace and controls.

My python page
My ShareCG freebies


MikeJ ( ) posted Sun, 12 April 2009 at 12:44 PM

It's a shame you can't use shadow maps with it, only raytrace. Which surprises me, because you can use shadow maps on distant lights. But I guess since point lights radiate outward equally in all directions that could create a problem for a shadow map.

Poser's lights in general need a complete reworking, in my opinion.



IsaoShi ( ) posted Sun, 12 April 2009 at 1:18 PM · edited Sun, 12 April 2009 at 1:20 PM

Did you know that bagginsbill did an inverse-square falloff shader for point lights?

It makes the falloff correct, rather than the incorrect linear falloff that normal Poser point lights have.

If you're interested, you can download the shader from bb's website. The only thing is, you have to enter the XYZ co-ordinates of the light into a special node in the shader. And in Poser Pro you have to alter it slightly because there is a built-in correction for a node-math bug that was fixed in Poser 7 SR3 (I think).

(edit) I was trying to use them in my last gallery image, but I could not get them to work, so I reverted to default falloff, which I think worked out OK. if you have better luck than me I would be interested to know how you did it!

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)


MikeJ ( ) posted Sun, 12 April 2009 at 1:49 PM · edited Sun, 12 April 2009 at 1:52 PM

I'll check that out, IsaoShi... eventually. For now I got my point light to cooperate well enough. I just needed one for a very small area I couldn't get to illuminate any other way. And having a falloff was essential. Thanks for the information though. :-)

Bagginsbill again, eh? Seems he gets into everything somehow. ;-)
It's strange that bagginsbill has had to use his considerable knowledge to fix all the things wrong with Poser... as opposed to the people who make Poser fixing the problems....



pjz99 ( ) posted Sun, 12 April 2009 at 2:53 PM

I don't use depth mapped shadows for an purpose any more, I got sick of incorrect shadow map offset and fake-looking blurred shadows.  Not a flaw specific to Poser, I don't like depth mapped shadows in any rendering app.

My Freebies


MikeJ ( ) posted Sun, 12 April 2009 at 3:03 PM

I agree with that pjz, but they make for nice effects. I don't use Poser to try to get any degree of "realism" or accuracy. I use LightWave for that. God knows I'd go crazy if I were trying to use Poser for "realistic" renders. Not just that but Poser's raytracing is way too slow for me.



Anthanasius ( ) posted Sun, 12 April 2009 at 3:32 PM

Génération mobiles Le Forum / Le Site

 


bopperthijs ( ) posted Sun, 12 April 2009 at 5:06 PM

*I don't use depth mapped shadows for an purpose any more,

*I didn't either, but recently I found that depth mapped shadows make prettier highlights: so I've been experiementing with double lights (spotlights), one with speculair turned off with raytraced shadows for the shadows, and one with diffuse turned off and depthmapped shadows for the highlights. to keep both lights in the same place, just copie the first light. only it's a bit difficult when you have to change the position of the lights. It's especially useful for dynamic hair.

best regards,

Bopper.

-How can you improve things when you don't make mistakes?


Privacy Notice

This site uses cookies to deliver the best experience. Our own cookies make user accounts and other features possible. Third-party cookies are used to display relevant ads and to analyze how Renderosity is used. By using our site, you acknowledge that you have read and understood our Terms of Service, including our Cookie Policy and our Privacy Policy.