Is there a way to reveal the code for processing commands? For example, sphere()

howhuman

I'm interested in coding a bubble, like the kind you blow from soap. Thought of applying some physics to a sphere. It might help if I knew how to code sphere().

TfGuy44

Yeah. I think this is it:

https://github.com/processing/processing/blob/c6d50c0d11df396c430269b88ebb3453f95b72ff/core/src/processing/core/PGraphics.java#L3101

jeremydouglass

@howhuman --

As the code that @TfGuy44 linked mentions:

A sphere is a hollow ball made from tessellated triangles ....
A sphere is a series of concentric circles who radii vary along the shape ....

Note that this is implemented as two end caps and a bunch of separate rings using TRIANGLE_STRIP. This may or may not be a good model for your soap bubble if you want a mesh defined out of a cloud of points any of which can be equally distorted.

If you are trying to understand how sphere() works I recently wrote a test sketch that shows it being constructed from simple to complex resolutions -- it was to test a bug that has since been fixed, but the sketch is still interesting:

• https://forum.processing.org/two/discussion/18731/duplicate-edges-in-sphere

If you are considering modeling a cloud of points in a sphere-like shape, building a mesh out of them, and them moving them about like a soap bubble, you might also be interested in this recent discussion of different approaches to building spheres out of points:

• https://forum.processing.org/two/discussion/18779/move-a-single-point