Geometry Nodes Starfield & Motion Lines
How to use it:
There are two collections: GeoN_Starfield and GeoN_Motion _lines. They are ready to use, just tweak parameters in the modifier tab.
Note: if you have a old computer, avoid raising density too fast to prevent the number of points getting very high.
Motion_Lines parameters (Starfield is just a simpler version of it):
Sphere_Radius: size of the emitter surface
Half-Sphere: switch to an half-sphere emitter.
Point_Density: point density is relative to the emitter surface so if you raise or shrink it, the number of point will follow.
Kill_points: reduce the number of points randomly. Useful to animate appearance\disappearance effect, or adjuting visible points without changing density.
Rotation: rotate line instances on XYZ axis
Line_radius: base Thickness of the lines
Line_Length: base length of the lines
Minimum_Size: small size will be randomized around this value
Maximum size: large size will be randomized around this value
Magnitude: increase or decrease the gap between the largest and smallest sizes.
Tangent: align instances to emitter surface.
Material: material assigned to the instances.
Seed: Change all random values
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