Re: [RayCaster] just the rays, and a DSP-inspired processor, in the new version

Hi Lauren,

thank you for working on this and sharing it with the community!! This 
is really great work!

Best
Marcel

Am 07.07.2026 um 20:16 schrieb Lauren Pullen:
> Greeting, List,
>
> I'm excited to announce a new package, RayCaster-Kernel-lrnp.6, that 
> includes just the Ray2D and Ray3D classes.  Also included is a new 
> feature, RayProcessorObject.  I hope the code and math is easy to 
> follow; you won't find ray casting code like this in tutorials!
>
> If you're using RayCaster for teaching trigonometry, computer 
> graphics, or programming and it's too hard, let me know where and I'll 
> add comments!  I can correctly explain this thing in dreams I've 
> worked on it so much.
>
> First up, Ray2D has been totally refactored with the latest advances 
> in my OOPing skill.  You can now piggyback off the ray's knowledge of 
> which direction it's aimed while stepping to write if-free direction 
> conditional code!  Take a look at the 'acceptors' and 'continuations' 
> message categories.
>
> If you thought 3D support was lacking, it's because I was having 
> trouble with occlusion at edges and vertices.  Occlusion is now based 
> on implementing signed axis acceptors; if you need it you can add it 
> fairly straightforwardly.
>
> For existing users, you'll want to update your class references to 
> LegacyRay2D until you can upgrade to acceptors and continuations. You 
> no longer "cast" a ray, you "step" it.  I'm gonna be reusing "cast" to 
> mean something else.
>
> The major enhancement is RayProcessorObject, which is supported in the 
> new Ray2D and Ray3D classes (but not the legacy versions). Think of it 
> like a filter bank you'd set up in audio mixing software, but for 
> rays. Adding support for a new function, like a different virtual 
> reality format, is as simple as swapping out processors.
>
> While the -Kernel package is ready to go, and -LampDemo is updated, 
> please be patient while I update the BitBlt renderer; the -Core 
> package is a bit of a disaster from experimenting with different 
> techniques and virtual reality models.
>
> Check it out:
> <http://www.squeaksource.com/RayCaster.html>
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