Observer perspective controls (web) #40
Description
Summary
Web-side counterpart to maDisplayTools #15 (Observer position & arena pitch).
Add observer perspective parameters to web tools:
- Arena pitch — tilt the arena relative to horizontal
- Observer translation — move observer position within arena (not just center)
- Observer height — vertical position of viewpoint
Design Questions
These match the MATLAB-side discussion (maDisplayTools #15):
- Are observer parameters part of arena config, pattern metadata, or runtime-only?
- Should observer position be saved with patterns or be a preview-only setting?
- How does this interact with the V2 header observer_id field?
Where to implement
- Pattern Editor — observer position controls in Generate tool
- Arena 3D Viewer — observer viewpoint adjustment
- arena-geometry.js — coordinate transformations accounting for observer position
Dependencies
- Coordinate with maDisplayTools Update icon generator status to 'In Development' with v0.3 #15 for consistent design decisions
- Spherical geometry is fully implemented (arena-geometry.js) — this builds on that foundation