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This shelf tool sets up a particle simulation that appears at a specific start frame and is constrained to a noised circular motion before receding into the center of the portal. It highlights a way to art-direct particles around a specific source shape to create a portal effect.
Important Nodes ¶
set_density_and_pscale1
        
This node initializes a pscale attribute based off on the relative density of the particles. The closer the particles are to each other, the larger the initial pscale attribute will be. This can create some nice stringy shapes in the particles.
oreintalongcurve1
        
The orientalongcurve1 node generates the normal attribute used inside the 
dopnet1 to update the velocity of the particles at each timestep. This helps keep the particles moving along the source shape.
Learning from this example ¶
| To... | Do this | 
|---|---|
| Change the source shape noise | Adjust the Amplitude, Amplitude Scale, and Element Size parameters on the mountain1 node. | 
| Change the source shape attraction | Dive inside the  | 
| Change the opening animation | Adjust the Uniform Scale parameter on transform1. | 
| Change the closing animation | Adjust the Uniform Scale parameter on transform2. | 
|  Change the initial  | Adjust the Radius, Search Pts, and Rel Density parameters on the  | 
| Change the color of the particles | Adjust the Color Ramp and Source Range parameters on attribadjustcolor1. |