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MPL: support for multi pattern snapping #6738

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@joaomai joaomai commented Feb 19, 2025

Closes #6360.

This PR refactors the data structures used in snapping to enable snapping to patterns instead of snapping to layers. For most designs, it works in the same way.

The snapping logic is the same still, snapping to layers with multiple patterns simply assigns a pin to each pattern and tries to snap to the pattern. The pin is assigned by searching for a pair of pins that follow the pattern in question, as snapping to one of them means all pins in the same pattern are snapped.

@joaomai joaomai marked this pull request as draft February 19, 2025 17:21
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clang-tidy made some suggestions

@AcKoucher AcKoucher self-requested a review February 21, 2025 18:56
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I'm curious to see the results with the multi pattern feature in PPL.

@joaomai joaomai requested a review from AcKoucher February 25, 2025 02:38
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MPL2: Add support for multi-pattern track-grid snap
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