Geometric chirality breaks codes, not just aesthetics
`geometric-mirror` covers CAD screenshots, floor plans, circuit schematics, and textbook diagrams. Horizontal mirroring can reverse stair handedness, door swings, section cuts, and north arrows—fatal in permit review or site coordination. Math and physics plots flip axis directions and vector sense, teaching the opposite conclusion from the source file. Mixed-language labels plus arrows may detach semantically after mirroring. Bitmap mirroring of vector exports also risks drift when the SVG master is not updated. Slide templates should declare whether mirroring is allowed; otherwise instructors ship two conflicting PNGs. Prefer editing the vector source; use raster mirror only as a last resort with explicit revision notes and compass double-checks.
Geometry mirror workflow
- On `geometric-mirror`, validate north arrows, stairs, and section symbols before flipping.
- Ensure coordinate arrows and vectors still match curriculum definitions.
- Update vector sources first; mirror PNGs only with traceable notes.