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Add LabelCenterline function#426

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quincylvania wants to merge 14 commits intoopenmaptiles:masteropenmaptiles/openmaptiles-tools:masterfrom quincylvania:sql-label-centerlinequincylvania/openmaptiles-tools:sql-label-centerlineCopy head branch name to clipboard

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Commits on Feb 28, 2023

• Add LabelCenterline function

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• Polygon is implied at this step

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• Convert function from string definitions to plpgsql begin/end

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• Use more descriptive variable names

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• Multipoint-based hull causes some issues

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Commits on Mar 5, 2023

• 2x faster execution by avoiding ST_Difference entirely

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• Create separate centerline for each part of a multipolygon instead of using a concave hull

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• Uppercase as

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• Avoid unnecessary plpgsql. Make functions immutable, strict, parallel safe

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• Name remaining CTE tables

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• Add parameters to control centerline creation

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• Don't need drop

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Commits on Mar 6, 2023

• Add parameter to enable multiple branches in the output (useful for polygons with lots bulges/arms)

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Commits on Mar 10, 2023

• Support holes

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