Spiky white light of death! (participating media test)

Insquall · Post by **Insquall** » Tue Sep 11, 2007 8:58 am

Well the best would be something that could export to illustrator format. But powercalc is ok for now. Thanks, LOTR Junkie.

Kram1032 · Post by **Kram1032** » Tue Sep 11, 2007 9:14 am

ARGH!
I just noticed, that powertoys for XP don't work for XP x64! GRRR!

Edit: I found an open source prog... not sure, how it is - I foud it via Wikipedia

http://gcalc.sourceforge.net/download.shtml

Lord of the Rings Junkie · Post by **Lord of the Rings Junkie** » Tue Sep 11, 2007 11:22 am

Good news, GraphCalc can save the graphs it generates to .BMP!

Kram1032 · Post by **Kram1032** » Wed Sep 12, 2007 7:03 am

great

- you should zoom in, very close to the bottom part, as it's all, you'll need to generate the lens

(the "cap" of the parabola is enough

)

Heavily Tessellated · Post by **Heavily Tessellated** » Wed Sep 12, 2007 7:09 am

The two packages I named above are just 2 of many optics design softwares out there, you can go crazy but I'm guessing the more complex the lens = orders of magnitude to your rendering time. (the advantage being they have a boatload of predefined formulae just waiting for you to input parameters.)

Lord of the Rings Junkie · Post by **Lord of the Rings Junkie** » Wed Sep 12, 2007 8:53 am

Just can't figure out how to use the darned software...

Kram1032 · Post by **Kram1032** » Wed Sep 12, 2007 9:12 am

which? powercalc? It actually is pretty easy - poorly, I can't get it working on 64bit, as already said

dougal2 · Post by **dougal2** » Wed Sep 12, 2007 9:40 am

Insquall wrote:I feel like trying this myself. Does anyone know of a good freeware/open source mathematical function graph plotter?

octave - http://www.gnu.org/software/octave/

Lord of the Rings Junkie · Post by **Lord of the Rings Junkie** » Wed Sep 12, 2007 9:41 am

Kram1032 wrote:which? powercalc?

OSLO LT

Kram1032 · Post by **Kram1032** » Wed Sep 12, 2007 11:55 pm

oh, ok

IanC · Post by **IanC** » Fri Sep 14, 2007 2:19 am

Very nice!

Or you could use python in blender, that's how I have made parabolic curves before

Removes any error of doing things by hand.

pretty fucking sweet! weird how its illuminating such a big area on the floor though... shouldnt it just be lighting up a tiny spot if its so focused?

The focus point is above the floor.

Kram1032 · Post by **Kram1032** » Fri Sep 14, 2007 2:30 am

can you send the script, IanC, please?

IanC · Post by **IanC** » Fri Sep 14, 2007 3:07 am

I'll write one tonight for you. It's pretty simple, particularly if you just make it in 2d, then spin it & remove doubles.

Kram1032 · Post by **Kram1032** » Fri Sep 14, 2007 3:37 am

yes, I know^^
I used the Open Sourced Prog, that I posted, but it came out wrong :S (and as I used far too many details - as usually

- I wasn't able to model any scene features, besides the lens, with my really huge amount of RAM (768 MB xD))

Lord of the Rings Junkie · Post by **Lord of the Rings Junkie** » Fri Sep 14, 2007 3:52 am

Kram1032 wrote:I used the Open Sourced Prog, that I posted, but it came out wrong :S

How so?

[Edit] Meh, I let it cook one more night...

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