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Thread: Lightwave 2019, Volumetric light comet!

  1. #1
    May the sauce be with you starbase1's Avatar
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    Lightwave 2019, Volumetric light comet!

    Just getting stuck into LW 2019.

    I fairly quickly came up with a comet I rather like based on a volumetric spotlight! And it animates nicely...

    https://vimeo.com/327128512

    I've attached the scene file, as I'm new to 2019 I'm pretty sure some of you can make it better, and make it render faster, and please share the results if you do!

    Nick

    And a still...
    Click image for larger version. 

Name:	cometstill.jpg 
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ID:	144612
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  2. #2
    Oh really great !
    Thank for sharing this.
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  3. #3
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    Quote Originally Posted by starbase1 View Post
    Just getting stuck into LW 2019.

    I fairly quickly came up with a comet I rather like based on a volumetric spotlight! And it animates nicely...

    https://vimeo.com/327128512

    I've attached the scene file, as I'm new to 2019 I'm pretty sure some of you can make it better, and make it render faster, and please share the results if you do!

    Nick

    And a still...
    Click image for larger version. 

Name:	cometstill.jpg 
Views:	259 
Size:	106.5 KB 
ID:	144612
    That indeed looks pretty good! The first thing I thought when I saw the video was a 'vent' of some sort... Even though I knew it should be a comet.

  4. #4
    Curmudgeon in Training Ma3rk's Avatar
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    Ya never know when something like this will come in handy.

    Years ago at an LALWUG meeting, Dave Jerrard showed some really interesting stuff he was doing with nebula. He said all he was using was volumetric lighting but with a secret sauce I guess. I asked if he'd do a tutorial and got sort of an obscure reply. Think he was guarding the recipe but never really saw anything later on.
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  5. #5
    Registered User Oldcode's Avatar
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    That's fantastic! Thanks StarBase!

  6. #6
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    Looks good. But while making animation you have to remember that tail is not going directly in direction of the movement of the comet (like it's in e.g. rockets). It's in opposite direction from the Sun (or other star).

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    Also, size of comet tail is inverse proportional to distance from the star. Comet at high distances is almost indistinguishable from a rock, and tail is growing during approaching the star.

  8. #8
    May the sauce be with you starbase1's Avatar
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    I did a bunch of stuff like that years ago on here, got some rather nice volumetric light nebulae out. Lots of others joined in and shared the results - should be in these forums somewhere?
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  9. #9
    May the sauce be with you starbase1's Avatar
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    OK, I did some digging and found the old volumetric light nebula thread

    https://forums.newtek.com/showthread...ghlight=nebula


    The file of my bits was no longer linked to.
    I'll upload and attach to this message.

    These are presets for point lights, old school LW.
    Attached Files Attached Files
    Last edited by Chuck; 03-29-2019 at 11:01 AM. Reason: fix typo
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  10. #10
    May the sauce be with you starbase1's Avatar
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    Just in case there was any misunderstanding, I did some DIGGING not some dogging!
    Faith is the opposite of Intelligence.

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  11. #11
    Super Member Kevbarnes's Avatar
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    Quote Originally Posted by starbase1 View Post
    Just in case there was any misunderstanding, I did some DIGGING not some dogging!
    Ha ha - I think you got away with it ! - is this just a UK euphemism ?
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    NewTek Social Media Chuck's Avatar
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    Quote Originally Posted by starbase1 View Post
    Just in case there was any misunderstanding, I did some DIGGING not some dogging!
    Yes, you did some digging.
    Last edited by Chuck; 03-29-2019 at 11:05 AM.
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  13. #13
    NewTek Social Media Chuck's Avatar
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    Quote Originally Posted by Sensei View Post
    Also, size of comet tail is inverse proportional to distance from the star. Comet at high distances is almost indistinguishable from a rock, and tail is growing during approaching the star.
    Even more fun to try to simulate: comets have two tails:
    • All comets have a visible dust tail, of dust from the melted material of the comet nucleus pushed away from the sun by the solar wind, and normally with some amount of curvature due to the motion of the comet along its orbital path. The dust tail is visible due to reflection of sunlight.
    • Some comets have a visible ion tail, of gas from the melted material of the comet. The gas glows due to ionization. Ionizing can be from interaction with the solar wind plasma, and, when close enough to the sun, by ultraviolet heating. The ionization also allows magnetic fields to affect the motion of the gas, so the ion tail can develop knots and streamers. The ion tail is also more directly away from the sun and usually less curved than the dust tail.



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  14. #14
    Curmudgeon in Training Ma3rk's Avatar
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    Quote Originally Posted by starbase1 View Post
    Just in case there was any misunderstanding, I did some DIGGING not some dogging!
    Well, that changes everything then!

    No matter your method, that was some pretty good sleuthing to dig that far back, but then I guess you knew that thread existed.

    There was mention of a planets thread and I'll be researching that soonish, but maybe you know of some already. Probably need serious updating to make use of 2019's surfacing abilities, but hey.

    It turns out that my nice new system, with dual nVidia Quadro 4000 RTX's w/8Gb ram each, STILL isn't quite good enough for Video Co-Pilot's VCOrb. Apply a texture and get just a blank composition staring back. Checked the compatibility list and of course the Quadro 5000 RTX's are on it but not the 4000's. Pretty picky for a free plug-in.

    So, be on the look out if ya would.
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  15. #15
    May the sauce be with you starbase1's Avatar
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    I don't remember the planets one... Planets are mostly down to good textures anyway, (oversimplifying a bit, but still...)

    I did a tutorial on making displacement mapped rugged dwarf planets though:
    https://nick-stevens.com/2016/12/27/...anet-tutorial/

    There's also a tutorial on my old site on making ring systems:
    http://www.starbase1.co.uk/pages/tutorial-rings.html
    It appears to be using Lightwave 8.5!
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