Adds a --use-cords switch to tro_flow.py (--use-coords accepted too). With it,
every TRO node carries its plant coordinate as a pos attribute and the SVG is
produced by "neato -n" instead of dot, so the diagram looks like the plant
layout rather than a computed left-to-right flow.
Scale is 0.25 pt/mm (COORD_SCALE), which turns the ~11 x 20 m plant into roughly
2800 x 5000 pt - large enough that the TRO boxes do not overlap. Without the
switch the pos attributes stay in the DOT as information only, at 1:100, and dot
ignores them; the default layout is unchanged.
Two details neato -n needs: the legend gets a position of its own, placed below
left of the plant bounding box, because with -n a node without pos would land at
0,0 in the middle of the drawing. And the switch is refused with a clear message
if any TRO has no coordinate, since -n cannot lay out a graph with missing
positions.
Verified that neato -n reproduces the given coordinates: the positions it reports
back differ from the input by a constant offset only (spread 0.08 pt, from
Graphviz moving the drawing into the positive quadrant), and no node distance
changes by more than 0.08 pt over spans of up to 3600 pt.
graph_to_svg() in material_flow.py replaces dot_to_svg() to take an engine and
the no-op flag; dot_to_svg() stays as a thin wrapper. It now also treats output
on stderr as an error, so neato's "node has no position" warnings do not pass
silently.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Sister program to material_flow.py with the same switches, but --tosvg draws the
flow diagram of the TROs instead of the individual objects. It reuses
read_elements and build_graph, so CSV parsing and direction logic exist once.
A TRO is the control logic of one hand-over point, derived from the separator and
what is attached to it, following doc/500573_Mubea/TRO_Identifikation_500573.md:
Gefaellestrecke, >= 2 lines sharing feed/discharge -> PinStore_Auto per group
Gefaellestrecke, single line -> 1Sep
Strecke (driven) -> Vario per segment
Kreisel lane -> 1Sep
A scanner at the separator deliberately does not change the type: in connect.ini
separators with a scanner are predominantly 1Sep, and 1Sep_SSCC is reserved for
the SSCC/end-measurement/WCS case, which a mechanical layout cannot reveal.
Affected points are reported as hints instead. A host with 2 or 3 outgoing flow
edges upgrades 1Sep to 1Sep1Swi/1Sep2Swi.
Connectivity contracts passive nodes: material runs separator to separator, so a
carousel lane carrying no TRO is traversed rather than treated as a dead end.
Without that, a lone separator on a spur loop would be reported as an orphan
purely as an artifact of the model. Each TRO must connect to at least one other;
otherwise an error file is written and the exit code is 3.
Each TRO also carries a plant coordinate - the centroid of the components it was
built from, so a 1Sep1Swi sits between its separator and its switch. Written into
the DOT as a pos attribute (1:100), which dot ignores and "neato -n" can use to
draw the diagram to scale.
Types, function blocks, components and colours come exclusively from
lib/tro_catalog.py.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
s.ayadi