GBGeometryMath

Summary

Geometry & collision math utilities for the grid building addon.

Provides compact, well-documented helper functions used across the addon for tile/polygon overlap and collision tasks. Main responsibilities include:

• Computing polygon vs polygon intersection areas (uses Godot Geometry2D).
• Producing tile polygons for square and isometric tiles and testing polygon overlaps against tiles (area-based and optimized native collision checks).
• Converting various Shape2D types to polygon approximations for geometry processing (Rectangle, Circle, Capsule, ConvexPolygon, fallback to rect).
• Utility helpers: axis-aligned rectangle detection and polygon bounding rect.

Note

TILE SHAPE ENFORCEMENT: All functions use TileSet.TileShape enum values.

Use: TileSet.TILE_SHAPE_SQUARE, TileSet.TILE_SHAPE_ISOMETRIC, TileSet.TILE_SHAPE_HALF_OFFSET_SQUARE

Do NOT use: integers (0, 1, 2) or strings (“square”, “isometric”, etc.)

Source

addons/grid_building/utilities/gb_geometry_math.gd

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Generated on 2025-09-07