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Rubberduck

Emitting particles from a lighted area

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Hi there,

some years ago i found a tutorial on Youtube that i can´t find anymore.

because it turned to private.

Long story short:

The result was a man who was partially lit by a spot,

and he (the man) was emitting particles 

exactly from those areas of his surface

where he was struck by the light.

It was looking quite magic.

As i remember it was made with TP and Expresso,

but thats not enough to realize it.

Does anybody know how this can be done

or

where i can find this tutorial again ?????

 

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46 minutes ago, Rubberduck said:

where i can find this tutorial again ?????

 

Actually this is a very simple thing to do. 

Create an Xpresso tag and insert PmatterWaves node, then add your "editable" object and set your light too. Then set the birth type to light only.

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  • Thank You for Your quick answer. But this is still not enough information for me.

    Can You be a little bit more precise ?

    The tutorial i was talking about was much more complicated. I will try to give you an idea of the result. Unfortunately i got only a very poor copy of it, but it can visualize the idea. The particles are emitted exactly from the area where the spot lits the man.

    Now imagine the light is moving and the particle source is following exactly. 

    Please don´t forget this is a very poor copy.

    The original was looking really magic.

    Just like Tinkerbelle was using her magic stick.

    The author also managed to let the figure vanish

    above the lit area.

    burning man_11_480x360.tif

    Burning-man.gif

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    The information I gave you was to just generate the particles that follow the light, no texturing or anything fancy.

    38 minutes ago, Rubberduck said:

    The particles are emitted exactly from the area where the spot lits the man.

     

    39 minutes ago, Rubberduck said:

    Now imagine the light is moving and the particle source is following exactly.

    This is what PmatterWaves do. 

     

    40 minutes ago, Rubberduck said:

    he original was looking really magic.

    Just like Tinkerbelle was using her magic stick.

    This is about having nice materials and colors, you can change your particles to be sand, pyrocluster or any object that you want. The sky is your limit and your CPU too...

     

    41 minutes ago, Rubberduck said:

    The author also managed to let the figure vanish

    This is something that can be done with proper materials. I am not really sure about what is the best way to do this, but you can render your object with a white material without any thing fancy then render the animation of the light object, after that you combine the image sequence in a video editor and set all the images blending mode to add. Also let all the frames stay till the last frame so they have different starts but the same end time. 

    What that does is you are building the material of white color building with each light movement, then you can use it on your object.

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  • Thanks for Your help.

    I just managed to make particles being emitted from the surface of a sphere with P Mater Waves

    and then to have particles produced on and sticking to the surface of a sphere with P Source.

     

    I was just in trouble with the details.

    The old emitter system wanted the particles as childs inside the emitter.

    In this system the emitter sends position and amount to the desired particles.

    That was unexpected for me.

    Its fun to experiment but sometimes a good hint is really helpful

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