* SOLID: draw 2D solids, chained as AutoCAD chains them
CADCraft had the SOLID entity but no command to draw it. As AutoCAD
2024 asks from AutoLISP: first, second, third point, then "fourth
point or <exit>" (Enter makes a triangle); further solids take the
previous one's last two corners and ask their third and fourth points
until Enter. Corners stay in the order given.
The command (alias SO) has a JSON form taking the points chained the
same way. solid_chains_its_corners_as_autocad pins seven measured
calls to 1e-9.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* SOLID: offer it in the Draw menu
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
* ELLIPSE from axis endpoints matches what AutoCAD stores
Typed ELLIPSE input was checked against AutoCAD 2024 black-box (synthetic
input in accoreconsole, read back with entget); three rules differed:
- The major axis pointed at the second axis endpoint; AutoCAD points it at
the first. A full ellipse looks the same, but an elliptical arc's angles
are measured from that axis, so the arc was drawn on the opposite side of
the center, and the stored major vector, start point and quadrant order
all differed.
- A point at "Specify distance to other axis" gave its distance from the
first axis; AutoCAD takes its distance from the center (the rubber band),
then swaps the axes when it is the longer one.
- The end-angle prompt had no Included angle option, so `_I` was rejected
and the next number became an absolute end angle. AutoCAD adds the
included angle (default 180) to the start angle.
The JSON form (ellipse.axis / ellipse.arc with p1, p2, p3) follows the
same rules. The regression test pins ten AutoCAD-measured cases, among
them survey (VN-2000) coordinates, a near-millimetre ellipse and both
Included angle cases.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* docs: geometry parity says which part was measured against AutoCAD
The "How this was measured" section still said no numeric comparison
against AutoCAD had been run, next to the new ELLIPSE revision row that
reports one. It now names the 11 measured ELLIPSE cases and the test
that pins them, and keeps the rest of the document marked as read from
the source. Pointed out in review.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* ellipse: drop the import the axis-endpoint change left unused
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>
