19 lines
768 B
TypeScript
19 lines
768 B
TypeScript
/**
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* Pairwise filtering using bit masks.
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*
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* This filtering method is based on two 16-bit values:
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* - The interaction groups (the 16 left-most bits of `self.0`).
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* - The interaction mask (the 16 right-most bits of `self.0`).
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*
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* An interaction is allowed between two filters `a` and `b` two conditions
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* are met simultaneously:
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* - The interaction groups of `a` has at least one bit set to `1` in common with the interaction mask of `b`.
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* - The interaction groups of `b` has at least one bit set to `1` in common with the interaction mask of `a`.
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* In other words, interactions are allowed between two filter iff. the following condition is met:
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*
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* ```
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* ((a >> 16) & b) != 0 && ((b >> 16) & a) != 0
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* ```
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*/
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export type InteractionGroups = number;
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