STEP assemblies: a link that closes a loop in the assembly is dropped,
so no block inserts itself; the walk is iterative. Each imported block
gets a name the drawing does not use yet instead of silently reusing an
existing definition, inserts are pointed at the names the blocks got,
and an insert of a block that could not be defined is left out with
the error reported.
Names that come from files (STEP products, 3D Studio objects, materials
and cameras, WMF font faces) go through a new shared
scene::sanitized_table_name, which applies the block-name rules
(reserved and control characters, 255 characters).
3D Studio: meshes with more vertices than a polyface mesh can index are
split over several meshes. Single-layer mode uses the current layer.
Materials are only created when the drawing has a material dictionary.
Camera views get the current view's proportions and the perspective
flag.
Messages show paths as given, the file-not-found and read-failure
messages are plain text of our own, and the "Press Esc" line is gone
since the import cannot be cancelled. The true-colour packing is
shared. "Select ACIS File" and "Import WMF" get catalog entries and
keys in all 22 locales.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
STEP presentation styles colour what they style: a solid in the standard
index colour its RGB is close to, else in the true colour, and a face
with a style of its own (with the edges round it) through the face and
edge colour attributes. IGES trimmed (144) and bounded (143) surfaces
come in as one SURFACE each in the entry's colour, after the solids,
which now come in last first. Faces show a true colour attribute in
that colour.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ACIS text files come in one object per body (3DSOLID, REGION or SURFACE).
STEP B-rep models become a block per product with component inserts at
their placements, scaled to the drawing's units; IGES manifold solids come
in as 3DSOLIDs scaled to the drawing's units with their colours. Splines
that are exactly analytic shapes are kept as those shapes. Windows
metafiles become a WMF<n> block of polylines and text fitted to half the
view, placed at its top-left corner or by WMFIN's insertion prompts. The
Import File window lists the four formats as supported.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
