Support operations for render layers #13310
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JoJoJet
commented
May 10, 2024
Comment on lines
120
to
126
| pub const fn and(self, other: Self) -> Self { | ||
| let mask = self.0 & other.0; | ||
| Self(mask) | ||
| } | ||
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| /// Returns all [layers](Layer) included in either instance of [`RenderLayers`]. | ||
| pub const fn or(self, other: Self) -> Self { |
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I considered calling these intersection and union for clarity, but I wasn't sure what to call xor using that naming convention
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This would be the symmetric difference or disjunctive union. Pretty obscure so not sure it's worth switching. Note that Python does have a symmetric difference operation on sets. https://en.m.wikipedia.org/wiki/Symmetric_difference
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It probably is worth switching, at least to avoid potential confusion with the and method. I imagine some people may think a.and(b) means "all the layers from a and b"
james7132
approved these changes
May 13, 2024
james7132
added
A-Rendering
|
if we can do #13317 would mean these can't be const, not sure how const-ness affects their value for you |
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Objective
Allow combining render layers with a more-ergonomic syntax than
RenderLayers::from_iter(a.iter().chain(b.iter())).Solution
Add the
oroperation (and correspondingconstmethod) to allow computing the union of a set of render layers. While we're here, also addedandandxoroperations. Someone might find them usefulTesting
Added a simple unit test.