Is it possible to shoot a finite number of particle from a location?

[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:

1. create a POPNET
   
2. inside it create a LOCATION operator
   
3. put coordinates for particles origin
   
4. under BIRTH tab, put CONST. ACTIVATION to 0 (zero)
   
5. IMPULSE BIRTH RATE to how many particles you need
   
6. 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 November 25, 2011 by thinkinmonkey

[edward]

(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]

Hi Prabu,

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

1. create a POPNET
   
2. inside it create a LOCATION operator
   
3. put coordinates for particles origin
   
4. under BIRTH tab, put CONST. ACTIVATION to 0 (zero)
   
5. IMPULSE BIRTH RATE to how many particles you need
   
6. 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)

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.....

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

Yes, I am from BU.

Edited November 26, 2011 by Prabu

[Prabu]

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

Thanks for the information. Yes i checked that.