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Farmfield

POPs: Spawn out from a point with constant velocity

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My second question for the day in regard to POP's. I'm splitting them in different threads as they are simpler to find for others looking to solve the same problem. :)

 

So, I'm looking for a solution to spawn particles in all directions with constant speed, like a shockwave, be it a growing spherical form or for creating something like a ring growing on a surface.

 

And yes, I can easily create velocities in VOPs for a point and use it in POPs but I'm looking for an in-POP solution, say you spawn particles from another (using POP Replicate) particle or a collision.

 

Now, you would think it would be as simple as creating a VOP and just putting a constant to the velocity, but noops. Also, why is that? That should just work, imo, or am I missing something?

Edited by Farmfield

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Hey Farmfield,

 

You could do that using some sort of force, e.g. a curve force or a pop axis force (or anything like that, magnet force,...you name it). I attatched a simple example in which I source particles form a circle and at the same time I am using this circle again as curve force to push the particles away from the curve.

 

Let me know if that is the kind of setup you are looking for. :)

circular_emission.hipnc

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No, that doesn't help me here. A simple example would be creating a point, add a POP network, in the pop network, birth 100 particles with an added velocity variation of 1, 1, 1, then attach a VOP and normalize the velocity - you will get all particles moving out from your initial point with a velocity of 1, creating a perfect sphere.

 

The problem is, that breaks the second you try to make something more complex, like using a volume for the particles to follow a surface. I mean, there just gotta be a somewhat simple way to do a setup like this one I did in Max, it's just a quick demo I did for a guy on how to do exactly this in Pflow - now I'm here asking the same question for POP's, hehe... And jump like 6 minutes in to see the type of spawning I'm talking about.

 

Edited by Farmfield

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