Reverse Lights?

by Razgriz on 07/25/2009 15:18, 17 messages, last message: 01/16/2010 02:15, 1747 views, last view: 05/05/2024 10:42

As anyone knows the light that a light entity emits varies from RGB 0 to 255. the less the values the more fading light. If a light value is less than ambient then no light is emitted making the light entity useless.

SO i came to ask why isn't there reverse engineering on this? like blacklights.
A feature that you can set lamp's color more precisely. Making a dark red or green or blue color without having to keep the whole map dark and using faded colors to make a scenery

That way a value less than the ambient will make the area that it affects darker than the ambient, like draining light! that could be used for some nice effects :D

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#1: shadow lights

by Hirato Kirata on 07/25/2009 16:39

we call them shadow lights

simply just substitute the RGB values for -ve ones, such as /newent light 512 200 -200 -200 for a deeper red.

and just for stating the obvious, the value for ambient is the absolute minimum a value a pixel in a lightmap may hold

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#2: ..

by Razgriz on 07/25/2009 23:43

that's something i wouldn't think of. neither would lots of other people so it would be good to have such a feature in the press of a button in the next release.

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#3: Re: ..

by tentus_ on 07/26/2009 06:54, refers to #2

How would you make that a single button? If I'm reading your post correctly, you want more control over lighting... this is seriously the most elegant way to do that.

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#4: ..

by Razgriz on 07/26/2009 10:29

to make the button you could allow this reversing without having to subtract the other values to help the one you want, like it toggles values that in -255 is totally dark and in 0 its faded light.

Idk how it could be done so i'm only suggesting. I'm no programmer yet no one other is a fortune teller to find out how to do darker lights :/

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#5: Re: shadow lights

by Razgriz on 07/26/2009 23:12, refers to #1

oh and this doesn't work. forgot to mention that >.>

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#6: Re: shadow lights

by tentus_ on 07/27/2009 00:42, refers to #5

I just confirmed that it does in the current version. Please provide a screenshot of how it doesn't work.

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#7: ..

by Razgriz on 07/27/2009 11:48

my previous post got lost since the forum died with an error again for several minutes... but anyway, i took a pic and wrote the stats on it. maybe you gouys use SVN version or something?

http://i294.photobucket.com/albums/mm88/8924th/screenshot_111284.png

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#8: Re: ..

by Megagun_ on 07/27/2009 12:15, refers to #7

It does work there...

Do you see any blue or green light in the box on the right? No, you don't! :)

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#9: Re: ..

by baby~rabbit on 07/27/2009 13:11, refers to #7

As Hirato said in the first post: ambient is the absolute minimum. So negative/shadow lights can only subtract from other lights, not from the ambient.

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#10: Lighting

by LeftClicker on 01/10/2010 02:35

Basically what he wants is to have shadows without lighting or cubes, just so we're all on the same page. Like a "black light". What Hirato and baby-rabbit are saying is that no, you can't exactly do that, you can only a black light that detracts from other lights. You must have ambient (surrounding) light at a minimum. Right?

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#11: Re: Lighting

by tentus_ on 01/10/2010 06:37, refers to #10

Right, the ambient is the minimum.

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#12: ..

by Q009 on 01/10/2010 11:30

but it can affect lighting for light ents:
http://leetclan.lua.pl/revlight.jpg

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#13: ..

by Q009 on 01/10/2010 11:31

lighting FROM light ents

*hates his keyboard*

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#14: ..

by Razgriz on 01/10/2010 23:43

its still a good idea to have negative value lights for darker ones. -255 -255 -255 for totally black lights anf for adding shadows LOL

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#15: Re: Q009

by LeftClicker on 01/12/2010 01:21

> but it can affect lighting [from] light ents
That's exactly the point. You need ambient lighting, provided by the light ents, at a minimum. If you have no light ents, I'm assuming that the shadow light creates a minimal amount of some.

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#16: Re: Q009

by tentus_ on 01/12/2010 05:00, refers to #15

No, ambient lighting is an absolute. What I think people are trying to do is create absolute black, which is a terrible idea in many ways. It can't/shouldn't be done in Sauer. A negative light that has no normal lights to subtract from will do nothing, as it is supposed to.

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#17: Re: Q009

by LeftClicker on 01/16/2010 02:15

OK, thanks tentus. I sorta kinda sorta get it now... sorta.

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