Previous mapping placed the corridor's long axis (flight direction
+Z) on canvas X (horizontal). User observed this as '90deg to
flight direction' because the tiles appeared to scroll sideways on
screen instead of along depth.
Swap so the long axis is on canvas Y (vertical on canvas):
- drawTileAt: canvasX = (perp + halfPerp + 0.5) * TILE_SIZE,
canvasY = (lng + halfLong + 0.5) * TILE_SIZE
- shader gUv: gUv.x = rotated.y / uGroundSize.x + 0.5 (perp axis),
gUv.y = rotated.x / uGroundSize.y + 0.5 (long axis)
- uGroundSize call: (PERP, LONG) instead of (LONG, PERP)
Now the corridor's long axis runs vertically on canvas. The screen
mapping (uv.y -> forward distance) reads the long axis as a vertical
strip, matching user expectation that 'forward' tiles scroll top-
to-bottom (or bottom-to-top) as the camera flies.
Richard Zink
8a9fbd3956