Make `Camera` an `Actor` and improve performance#67

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quephird wants to merge 14 commits intomainfrom

experimental_make_camera_an_actor

Commits on Dec 12, 2023

Whoops... forgot to update examples again.
quephird
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Whoops... forgot to update README again.
quephird
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Moved camera out of world and into a separate property of ScintillaApp. Also removed all async calls in World.
quephird
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Temporarily disabled running of tests; constructors in World are now chained.
quephird
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OMFG I think I solved the performance issue.
quephird
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Updated TDOR sketch
quephird
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Moved `includes()` into Shape protocol and made Group and CSG have specilalizatons of that method to avoid using a switch and casting. Also now passing IDs instead of entire shapes, all to avoid co…
quephird
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Made code in CSG.filterInterections() a wee bit clearer.
quephird
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Cache in World is now only for maintaining the relationship between child shape IDs to their parents. Consequently, parentId is no longer a nullable property of Shape.
quephird
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Two things in this commit: we are now caching child IDs in CSG shapes to speed up lookups, and we promoted the top level intersect function to be part of the Shape protocol to improve performance f…
quephird
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Updated all examples.
quephird
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Updated README.
quephird
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Updated tests and got them all to pass.
quephird
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Finally made Camera an actor and updated tests.
quephird
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