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Fix empty world map by auto-fitting after load and sampling NEs across the extent.

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World coords sit far outside the default viewport, so opening the flat map looked blank; also lower minZoom and stride-sample so the overview is visible without a truncate banner.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
oliver 2026-08-07 02:35:26 +08:00
parent 48b10656d2
commit af331e92ca
2 changed files with 65 additions and 14 deletions
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39
netx_api/ume_topology_world_graph.py
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@ -525,6 +525,9 @@ def get_flat_view_graph(
)
if region_folder_ids is not None:
q = q.filter(TopoFabricNode.region_folder_id.in_(list(region_folder_ids)))
truncated = False
reason = ""
if sbn_id.strip():
sid = sbn_id.strip()
# Attr JSON filter is rare; keep Python filter but only after a bounded fetch.
@ -535,16 +538,34 @@ def get_flat_view_graph(
if str((n.attrs or {}).get("ume_sbn_id") or "") == sid
or str(n.region_folder_id or "") == sid
]
if len(nodes) > WORLD_NODE_SOFT_CAP:
nodes = nodes[:WORLD_NODE_SOFT_CAP]
truncated = True
reason = "too_many_viewport_nodes"
else:
# Cap in SQL so we never hydrate 15k ORM rows for a single browser canvas.
nodes = q.order_by(TopoFabricNode.id.asc()).limit(WORLD_NODE_SOFT_CAP + 1).all()
truncated = False
reason = ""
if len(nodes) > WORLD_NODE_SOFT_CAP:
nodes = nodes[:WORLD_NODE_SOFT_CAP]
truncated = True
reason = "too_many_viewport_nodes"
# Cap so we never hydrate 15k ORM rows. Stride across world-order so the
# overview is spread out (id-prefix order clumps one corner of the map).
id_rows = (
q.with_entities(TopoFabricNode.id)
.order_by(TopoFabricNode.world_x.asc(), TopoFabricNode.world_y.asc())
.all()
)
total = len(id_rows)
if total <= WORLD_NODE_SOFT_CAP:
pick_ids = [str(r[0]) for r in id_rows]
else:
stride = max(1, total // WORLD_NODE_SOFT_CAP)
pick_ids = [str(r[0]) for r in id_rows[::stride][:WORLD_NODE_SOFT_CAP]]
truncated = True
reason = "too_many_viewport_nodes"
nodes = (
db.query(TopoFabricNode).filter(TopoFabricNode.id.in_(pick_ids)).all()
if pick_ids
else []
)
# Preserve world-order for stable layout / fitView.
order = {nid: i for i, nid in enumerate(pick_ids)}
nodes.sort(key=lambda n: order.get(str(n.id), 0))
fids = [n.id for n in nodes]
fid_set = set(fids)