4 replies to this topic

[Prabu]

Hi,

Is there a way to do this?

* Shoot finite number(ie 1000000) of particle from a location in a scene in a time instance.
* It should collide with other objects in the scene and settle.

(something similar to shooting photon from light source for example caustic photon after reflection or refraction it settle in the scene)

-Prabu

[thinkinmonkey]

Hi Prabu,
maybe this is what you're looking for about particles creation:

• create a POPNET
  
• inside it create a LOCATION operator
  
• put coordinates for particles origin
  
• under BIRTH tab, put CONST. ACTIVATION to 0 (zero)
  
• IMPULSE BIRTH RATE to how many particles you need
  
• IMPULSE ACTIVATION set a formula, for example, if you want particles to born from frame 4 to frame 10, put $FF>4 && $FF<10

For collisions, use COLLISION pop.

If you're looking for knowledge, I strongly suggest you to watch the wonderful videos of Peter Quint here:
PETER QUINT on Vimeo
and give a look also here:
Houdini Tutorial Database

Happy magic!

P.S. I see you're in Bournemouth: are you studying at Bournemouth University?

Edited by thinkinmonkey, 25 November 2011 - 04:37 AM.

[edward]

Prabu, on 25 November 2011 - 03:09 AM, said:

(something similar to shooting photon from light source for example caustic photon after reflection or refraction it settle in the scene)

Note that you can always just load a photon map as geometry.

[Prabu]

thinkinmonkey, on 25 November 2011 - 04:35 AM, said:

Hi Prabu,
maybe this is what you're looking for about particles creation:

• create a POPNET
  
• inside it create a LOCATION operator
  
• put coordinates for particles origin
  
• under BIRTH tab, put CONST. ACTIVATION to 0 (zero)
  
• IMPULSE BIRTH RATE to how many particles you need
  
• IMPULSE ACTIVATION set a formula, for example, if you want particles to born from frame 4 to frame 10, put $FF>4 && $FF<10

For collisions, use COLLISION pop.

Thanks a lot
Exactly what i was looking for.
Is there a way to run simulation without playing in time line? (ie In single frame getting the end result of simulation. May be after cooking node)

thinkinmonkey, on 25 November 2011 - 04:35 AM, said:

If you're looking for knowledge, I strongly suggest you to watch the wonderful videos of Peter Quint here:
PETER QUINT on Vimeo

Great tutorials.....

thinkinmonkey, on 25 November 2011 - 04:35 AM, said:

P.S. I see you're in Bournemouth: are you studying at Bournemouth University?

Yes, I am from BU.

Edited by Prabu, 26 November 2011 - 03:13 PM.

[Prabu]

edward, on 26 November 2011 - 05:51 AM, said:

Note that you can always just load a photon map as geometry.

Thanks for the information. Yes i checked that.