The codec now holds wide EntityType variants boxed (MText, Helix,
Dimension, Hatch, Viewport, MultiLeader, Surface, Table, Ole2Frame,
Light, Extended). Constructors box their entity; nested patterns reach
a dimension through entities::dimension::as_dimension(_mut). Also
follows BlockAction::action_ids, LineTypeComplexData::source_flags and
the decimal tab stop with an explicit character.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The codec and kernel repositories and crates are renamed opencadcodec and
opencadkernel. Inside OCS they are depended on under short keys, so code
reads `codec::`, `kernel::` and the new `graph::` (opencadgraph, the node
graph engine). File-format and protocol spellings stay as they were: the
ACIS product id `acadrust`, the ACADRUST_* switches and the plugin
version keys `acadrust_version` / `acadrust_source`.
A button left of MCP on the command line opens a translucent node graph
over the viewport, with a palette of object, input, math, logic, list,
text and geometry nodes added by click or drag. An object node owns
drawing entities and its rows are the Properties panel's own rows for
them: the single-object page is extracted from refresh_properties as
entity_property_sections, values use the control protocol's
property_json, and writes go through set_property_value with a property
target override, so the panel, MCP and the graph share one read/write
path. A list reaching an object row makes one entity per element. Each
graph action is one undo step; the canvas pans and zooms.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
DIMTMOVE=1 ("moves the text and adds a leader") draws the leader from the midpoint
of the dimension line to the text, so a text dragged outside the dimension line gets
a diagonal that starts in the middle of the line and crosses the extension lines.
Mechanical-drawing practice (GB/T 4458.4, and what AutoCAD itself draws) extends the
dimension line along its own axis so that it runs underneath the text. Linear and
aligned dimensions now do that whenever the text is outside the dimension-line extent;
when the text is still inside it (only moved up/down) the previous connect-to-text
leader is kept. Every other dimension type is unchanged, and only dimensions with
DIMTMOVE=1 are affected at all (the shipped default is 0).
Adds four unit tests covering the placements (outside right, outside left, inside,
radius draws none) plus an integration render smoke test driven through the real
Scene::entity_wires() -> export_pdf() pipeline, gated by OCS_DIM_LEADER_PDF so CI
stays side-effect free.
