How to let particles disappear gradually?

[HuaLi]

How to let particles disappear gradually?

I added  "Time Test" and  "Delete" operators , set the "test value" to 200 frame, the paticles disappear immediately at 200 frame, I want to let the particles disappear gradually, how to do it?


this is my operator settings:
   


this is my screen recording, the paticles disappear immediately:

  disappear_immediately.mp4 (Size: 2.69 MB / Downloads: 331)


this is an example,  the paticles disappear gradually, that is what I want:

  disappear_gradually.mp4 (Size: 52.31 KB / Downloads: 368)

[d4rk3lf]

Increase variation parameter. 
Right now, it's 3, and the value is 200. 
if you increase it from 3 to... let's say... 25... they will start disappearing from 175 to 225 (25+ and -25 from the actual value of 200). 
That's how variation works. 


If you want to disappear like the second sample (being smaller and smaller), you need a scale operator, and you need to animate scale and set it to particle age.

[HuaLi]

If you want to disappear like the second sample (being smaller and smaller), you need a scale operator, and you need to animate scale and set it to particle age.

I added a scale operator, could you please show me how to set the parameters?

   



  box-particles-demo.zip (Size: 203.06 KB / Downloads: 292)

[d4rk3lf]

If you want to disappear like the second sample (being smaller and smaller), you need a scale operator, and you need to animate scale and set it to particle age.

I added a scale operator, could you please show me how to set the parameters?



- Move scale operator to the second event. 
- delete the "delete" operator. 
- Animate scale operator from 100% to 0% (with auto key) in 50 frames, or whatever numbers of frames you want that scale animation is applied to each particle 
- Change sync by to "event" 

That should work.... 

OR... 
You can try just making scale to 0% and play with the interpolation settings. 
I am still unsure how that works, thou. 

Additionally: 
You can add another time test (event based) to second invent, with 100 frames or something, that leads to third event where the delete operator, so you delete those particles that are 0% size. 

[HuaLi]

If you want to disappear like the second sample (being smaller and smaller), you need a scale operator, and you need to animate scale and set it to particle age.

I added a scale operator, could you please show me how to set the parameters?



- Move scale operator to the second event. 
- delete the "delete" operator. 
- Animate scale operator from 100% to 0% (with auto key) in 50 frames, or whatever numbers of frames you want that scale animation is applied to each particle 
- Change sync by to "event" 

That should work.... 

OR... 
You can try just making scale to 0% and play with the interpolation settings. 
I am still unsure how that works, thou. 

Additionally: 
You can add another time test (event based) to second invent, with 100 frames or something, that leads to third event where the delete operator, so you delete those particles that are 0% size. 

I'm muddled, I uploaded my file, could you please help me adjust it?
  
   



  box-particles-demo-02.zip (Size: 162.59 KB / Downloads: 304)

[d4rk3lf]

Save it for 2018, because I am using that version.

[d4rk3lf]

Nevermind. 

I'll be busy later, so I did you a simple scene of balls gradually scaling. 
What I forgot to mention in my previous explanation is that you need to set a scale operator timing parameter to continuous.

[HuaLi]

Nevermind. 

I'll be busy later, so I did you a simple scene of balls gradually scaling. 
What I forgot to mention in my previous explanation is that you need to set a scale operator timing parameter to continuous.

Thanks!