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jelly vector / dragon ball

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marlon:


Hey there!  =)

Back in the good old Melon days I used to LOVE their "Jelly Cube" and "DragonBall" in the Human Target - Amiga demo..

Now that is said.. Can anyone explain to me how they are made?


- Marlon Bodhi

hellfire:

--- Quote ---"DragonBall"
--- End quote ---
The "ball" is just a filled circle which can be scaled along the y axis (by skipping scanlines of the original circle).
The stars are  3d vectors which match the size of the circle and get the same y-scaling in 2d space.
Backfacing polygons are drawn in a different color to make the ball appear transparent.


--- Quote ---"Jelly Cube"
--- End quote ---
A cube which is subdivided along the y-axis.
The outer edges represent a sine with changing amplitude.

Raizor:
It's a shame there's not a demo effects Wiki as things like this are really interesting. It would be great to have info on effects all under one roof somewhere.

K++ for the info Hellfire.

marlon:
Thank you very much.

I actually thought it was done using a geosphere and some texture mapped stars..

hellfire:

--- Quote from: marlon on February 23, 2012 ---I actually thought it was done using a geosphere and some texture mapped stars..
--- End quote ---
That's how you'd do it today.
Back in the days a reasonably smooth sphere-mesh would have had way too many polys, though.

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