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Particle Flow Question...

Chris2005Chris2005675 Posts: 3,096Member
Using Particle Flow or some other particle system, is there a way to slow down already emitted particles, to simulate the slowing to impulse, like seen in TNG or even the effect seen in First Contact, when the Phoenix drops out of warp...

I've looked all over.
Post edited by Chris2005 on
AMD Ryzen 9 5900X
Gigabyte RTX 3080 Gaming OC 12GB
1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD
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  • New HomelandsNew Homelands1 Posts: 0Member
    I don't know about in 3ds max, but could you use an envelope and add a gravitational pull so that the particles are slowly brought to a stop by an increased force of gravity in the oposite direction of their motion? Does that makes sense?
  • spacefighterspacefighter2 Posts: 0Member
    have never used max but have an idea. is there any control for acceleration on the particles, if so just set it to a low negative value and that should do the trick. the particles will follow a lovely little parabola away then back to their source.
  • Chris2005Chris2005675 Posts: 3,096Member
    Well, the speed doesn't seem to affect particles already emitted...

    But I managed by adding a drag force to the particles and slowly increasing it.
    AMD Ryzen 9 5900X
    Gigabyte RTX 3080 Gaming OC 12GB
    1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD
    32 GB RAM
    Windows 11 Pro
  • oldmangregoldmangreg198 Woodland Hills, CAPosts: 1,339Member
    Wouldn't it be simpler just to keyframe the speed? For example start the speed at 0.25m on frame 0 and after 100 frames be at 0.0m.
    Your right to an opinion does not make your opinion valid.
  • Chris2005Chris2005675 Posts: 3,096Member
    oldmangreg wrote: »
    Wouldn't it be simpler just to keyframe the speed? For example start the speed at 0.25m on frame 0 and after 100 frames be at 0.0m.

    That's the thing, the speed doesn't seem to affect particles that have already been emitted.
    AMD Ryzen 9 5900X
    Gigabyte RTX 3080 Gaming OC 12GB
    1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD
    32 GB RAM
    Windows 11 Pro
  • oldmangregoldmangreg198 Woodland Hills, CAPosts: 1,339Member
    Well If you are slowing to impulse as suggested you can keyframe the particles speed to slow down AND keyframe the particles life to go down to zero. I tested this and it works fine for slowing to impulse. Will need tweak it to seem realistic (like scattering, variation in speed between particles,etc).

    EDIT: Let me record a quick to show what it looks like.

    EDIT 2:
    Your right to an opinion does not make your opinion valid.
  • Chris2005Chris2005675 Posts: 3,096Member
    In First Contact, for example, all of the "warp" stars come to a stop, as that happens the trail length shortens...
    AMD Ryzen 9 5900X
    Gigabyte RTX 3080 Gaming OC 12GB
    1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD
    32 GB RAM
    Windows 11 Pro
  • spacefighterspacefighter2 Posts: 0Member
    it would be more work than the perfect particle system but one could manually animate each particle as an object. in blender atleast you can easily make objects change speed over time, using plain keyframes or the graph editor. just for clarifying exactly what you are trying to do, can you post a link to a youtube vid of the exact sort of thing you want.
  • Chris2005Chris2005675 Posts: 3,096Member
    Well, I'm ideally going after the look of the particles in the FX from the episode I'm currently working on... here:

    But here's the warp stars from First Contact:
    AMD Ryzen 9 5900X
    Gigabyte RTX 3080 Gaming OC 12GB
    1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD
    32 GB RAM
    Windows 11 Pro
  • oldmangregoldmangreg198 Woodland Hills, CAPosts: 1,339Member
    Wait. So are you looking to recreate the dropping out of warp effect? Because if you are you should of reworded your question better.
    Your right to an opinion does not make your opinion valid.
  • Chris2005Chris2005675 Posts: 3,096Member
    oldmangreg wrote: »
    Wait. So are you looking to recreate the dropping out of warp effect? Because if you are you should of reworded your question better.

    I was... my original post says:
    Chris2005 wrote: »
    Using Particle Flow or some other particle system, is there a way to slow down already emitted particles, to simulate the slowing to impulse, like seen in TNG or even the effect seen in First Contact, when the Phoenix drops out of warp...

    I've looked all over.
    AMD Ryzen 9 5900X
    Gigabyte RTX 3080 Gaming OC 12GB
    1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD
    32 GB RAM
    Windows 11 Pro
  • wjasperswjaspers332 Posts: 0Member
    If you know how to go to warp, guess dropping out of warp goes the same reversed?
  • Chris2005Chris2005675 Posts: 3,096Member
    wjaspers wrote: »
    If you know how to go to warp, guess dropping out of warp goes the same reversed?

    Well, I never use particles for jumping to warp, when it comes to the effect I used in my TWOK video, it was simply a particle array with instanced geometry that was animated to grow in length and then the camera moved quickly through the particles to imply they were moving...

    I think I've found a method that's gonna have to work for now, using a drag force on a particle system to slowly bring them to a stop as they shorten in length.
    AMD Ryzen 9 5900X
    Gigabyte RTX 3080 Gaming OC 12GB
    1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD
    32 GB RAM
    Windows 11 Pro
  • oldmangregoldmangreg198 Woodland Hills, CAPosts: 1,339Member
    If you have Ky Trails, make them spheres and trails, then apply the drag to them. Not sure you can keyframe Ky Trails though.
    Your right to an opinion does not make your opinion valid.
  • Chris2005Chris2005675 Posts: 3,096Member
    Yea, although, I don't think the free version works for particle systems, I know the Pro version does.
    AMD Ryzen 9 5900X
    Gigabyte RTX 3080 Gaming OC 12GB
    1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD
    32 GB RAM
    Windows 11 Pro
  • oldmangregoldmangreg198 Woodland Hills, CAPosts: 1,339Member
    It does. Haven't used it in a while.
    Your right to an opinion does not make your opinion valid.
  • Chris2005Chris2005675 Posts: 3,096Member
    Hmmm, I'll look into it. :)
    AMD Ryzen 9 5900X
    Gigabyte RTX 3080 Gaming OC 12GB
    1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD
    32 GB RAM
    Windows 11 Pro
  • oldmangregoldmangreg198 Woodland Hills, CAPosts: 1,339Member
    Here is an older video I did with it from three years ago:
    Your right to an opinion does not make your opinion valid.
  • Chris2005Chris2005675 Posts: 3,096Member
    oldmangreg wrote: »
    Here is an older video I did with it from three years ago:

    Nice. Well, right now, I'm still getting my computer all back up and running.
    AMD Ryzen 9 5900X
    Gigabyte RTX 3080 Gaming OC 12GB
    1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD
    32 GB RAM
    Windows 11 Pro
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