Excalidraw skill lacked guidance on building complex visual shapes from
basic primitives, leading to flat single-shape attempts for structures
like roofs and walls. Adds coordinate geometry foundations so agents
produce realistic illustrative diagrams alongside technical ones.
🔧 Core geometric principles:
- Compose complex shapes from many small primitives with tessellation
- Eliminate gaps using interleaving offset rows at half-width spacing
- Parametric positioning formulas for centering, circular, triangular, and isometric layouts
- Scale primitive dimensions proportionally to container size
📦 Technique catalog reference:
- Illustrative elements (roofs, walls, clouds, trees, fences, windows)
- Sugiyama-inspired flow diagram layout algorithm
- Zone-grid architecture diagram layout
- Isometric 2.5D projection formulas
- Repeating pattern formulas with brick-pattern offsets
🧹 Consolidate tenants/projects/search into single compact table to
keep SKILL.md under the 500-line skill guideline
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