Hi(gh)!

And once more digging in the history of POV-Ray... and perhaps finding 
something to adopt for own projects.

Heiko Rappich asked on 1998-10-21 how to create realistic flames with 
POV-Ray 3.1 - he previously used the "halo" feature of 3.02 and wondered 
why the media looks so transparent (first and second images attached here).

(and I wonder why the rendering in 3.1 looks so much darker and grainier 
than the one done with 3.7... and how abysmally slow my old laptop is 
compared to my hexacore main computer!)

The original thread can be found here: 
http://news.povray.org/povray.binaries.scene-files/thread/%3C362E409A.6AEB3235%40t-online.de%3E/?ttop=426795&toff=1431

Then three fellow POVers came upw with suggestions, first Ken Tyler: 
"Lower filter value of pigment" (third image attached)

Hendrik Knaepen (a relative of Zeger Knaepen?): "increase emission from 
0.68 to 5" (fourth image attached).

Finally, Bob Hughes (yes, he already was around back then!): "adapt 
emission color to flame color, replace spherical with onion media 
pattern and decrease turbulence" (fifth image attached).

I rendered all "suggestion versions" with 3.1 on my laptop (did not try 
them in 3.7 yet) - to me, Hendrik Knaepen's suggestion looks most 
promising, I would lower the emission value to something like 3... what 
do you think?

See you in Khyberspace!

Yadgar

Now playing: Action (Streetheart)

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Attachments:
Download '1998-10-21 fire problem with pov-ray 3.1 (heiko.rappich) [rendered on 2019-05-12 by yadgar using pov-ray 3.1].png' (512 KB) Download '1998-10-21 fire problem with pov-ray 3.1 (heiko.rappich) [rendered by yadgar on 2019-05-12 using pov-ray 3.7].png' (247 KB) Download '2019-05-12 heiko rappich's fire problem with pov-ray 3.1, using ken tyler's suggestion (yadgar).png' (439 KB) Download '2019-05-12 heiko rappich's fire problem with pov-ray 3.1, using hendrik knaepen's suggestion (yadgar).png' (407 KB) Download '2019-05-12 heiko rappich's fire problem with pov-ray 3.1, using bob hughes' suggestions (yadgar).png' (314 KB)

Preview of image '1998-10-21 fire problem with pov-ray 3.1 (heiko.rappich) [rendered on 2019-05-12 by yadgar using pov-ray 3.1].png'

Preview of image '1998-10-21 fire problem with pov-ray 3.1 (heiko.rappich) [rendered by yadgar on 2019-05-12 using pov-ray 3.7].png'

Preview of image '2019-05-12 heiko rappich's fire problem with pov-ray 3.1, using ken tyler's suggestion (yadgar).png'

Preview of image '2019-05-12 heiko rappich's fire problem with pov-ray 3.1, using hendrik knaepen's suggestion (yadgar).png'

Preview of image '2019-05-12 heiko rappich's fire problem with pov-ray 3.1, using bob hughes' suggestions (yadgar).png'