GeometryHelper 13.5.0

GeometryHelper 13.5.0, with GeometryHelper.CadConvert, GeometryHelper.IfcConvert and GeometryHelper.TeklaConvert.{2020,2025,2026} at 13.5.0.

NEW IN 13.5.0

A minor release: one public member added, DxfDatabase.FontSearchPath, and none removed or renamed. Most of it is
DXF parity with AutoCAD 2021; the results callers will see change are listed under CHANGED. Three fixes are to the
booleans of solids.

NEW, DXF
- DxfDatabase.FontSearchPath: folders, separated by semicolons and searched in their order, where the SHX and
  TrueType fonts (.ttf, .ttc, .otf of glyf outlines) of the drawing's text styles are read from, so that its words
  are measured as AutoCAD 2021 measures them: TEXT, ATTRIB and ATTDEF places and GeometricExtents, the ActualWidth
  and ActualHeight of a one-line MTEXT, multileaders met on the right, attribute definitions flipped and leaders'
  hooks exploded. Against AutoCAD 2021, 21 596 of 21 600 TEXTs of its own SHX fonts and 30 840 of 31 200 TEXTs of
  the TrueType fonts of Windows come out as it gives them. The results follow the fonts given. Empty, as every
  drawing is opened and made, nothing is read and nothing changes.

FIXED, solids
- A common part of two solids, and a difference, leave out an opening of a body whose material the result does not
  keep where it shares no space with the other body. A spiral girder less a spiral ramp holding a spiral tube as
  an opening came apart into 640 222 cells in 202 seconds on .NET 10 and 704 on .NET Framework 4.8 and was not
  worked out; it is cut into 18 345 in 1.6 and 2.7 seconds and holds what slicing gives. The openings of a union's
  bodies, and of the body a difference takes material from, are cut in as before.
- A union, a common part and a difference of solids far out, and each cut of TrySubtractAll, are worked out near
  the origin: bodies reaching more than 2^20 out and more than 1 024 times the size of their box are moved by
  whole coordinates, worked out and moved back, a corner kept coming back as it was given, to the bit. Of 1 196
  such booleans ten million to a thousand million out, wrong at a thousandth 241 -> 14, at a hundredth 413 -> 15
  and not worked out 134 -> 49; 3 of 1 200 with a face exactly the tolerance off a wall's plane came out otherwise
  by up to 1.9. Within a million of the origin nothing changed, to the bit. Far out, booleans at a thousandth and
  a hundredth take 17 to 26 per cent longer, at a millionth a third less. GetVolume, TryCutOpenings, Section and
  Mesh3.ToCells of bodies far out are not moved yet.
- A union, a common part or a difference that is not worked out is worked out once more where either body closes
  within the tolerance and not at the rounding of its coordinates, as a body cracked a hair wide does: its corners
  within the tolerance of each other made one and its faces lying in one plane merged. Of 45 000 booleans of a
  cracked U and a box at a thousandth, a hundredth and 0.05, 1 619 differences, 2 106 common parts and 2 063
  unions not worked out are right now, and none was made wrong. Every boolean worked out as the bodies came is as
  it was, to the bit, and takes as long as it did; one worked out again takes 1.4 to 2.5 milliseconds longer for
  such a U and box under .NET Framework 4.8.

CHANGED, DXF: results callers will see change
- Words given to a DxfMLeader put the base point of its content where a leader from the left would meet them, the
  gap short of the place given and as far below as the left is met, where the library put it at the words. Words
  turned in code turn the multileader's plane where no leader is landed yet; words mirrored are moved as AutoCAD
  2021 moves them, kept upright where FontSearchPath measures them; words of another text style are moved to where
  the multileader's font meets them, where FontSearchPath measures both.
- new DxfMLeader() is of words: ContentType is MTextContent, where it was NoneContent. A new multileader writes
  what AutoCAD 2021 writes for one: ExtendLeaderToText true in a drawing of R2013 or later, a leader line added of
  no colour of its own, and TextColor the colour of the words given, BYLAYER for words made in code, where it was
  BYBLOCK.
- DxfMLeader.RemoveFirstVertex and RemoveLastVertex take a leader line down to one vertex, where the library kept
  two; RemoveLastVertex refuses the last vertex of a leader of two lines or more (InvalidOperationException), as
  AutoCAD 2021 refuses it.
- HandOverTo keeping the extension dictionary refuses the contexts of another kind of entity (ArgumentException)
  before anything is written, where it wrote a drawing AutoCAD 2021 crashed reading; not keeping it, the new
  entity writes the contexts of the copy it is handed.
- HasContext answers false for an object that is never annotative, as a LINE or a layer, whatever context records
  it holds. DxfObjectContextCollection.AddContext names a scale's entry *A1, *A2 and on, as AutoCAD 2021 does,
  where the library gave A0, A1 and on.
- DxfTable writes the reals it gives with their point (141 9.0, where it wrote 141 9), keeps each row's looks with
  the row while the drawing is open, as AutoCAD 2021 keeps them in its ROWTABLEFORMAT, and RemoveAllOverrides
  keeps the looks of the title's or the header's kind in a row of that kind out of its place.
- Normal set on a TEXT, ATTDEF, ATTRIB, INSERT or SOLID keeps its points, turn and contexts in its plane, as
  AutoCAD 2021 does, where the library kept them where they stood in the world; DxfMText.Normal makes the MTEXT
  read along the new plane's x axis.
- An annotative copy added to another drawing by AppendEntity, WblockCloneObjects or Insert keeps its contexts and
  those of its ATTRIBs, each on that drawing's scale of its scale's name where the two give the same scale. A
  hundred such copies of a drawing of 35 entities take 185 ms where they took 165 on .NET Framework 4.8.
- With FontSearchPath given, a TEXT, ATTRIB or ATTDEF justified other than left on its baseline is put about its
  second point when it is edited or added, and a locked attribute definition is flipped, where it was refused.

FIXED, DXF
- A TransformBy that scales a multileader marks its scale as its own (bit 24); a multileader's leader lines of
  BYBLOCK, its 176, 294 and 295 are read and written as AutoCAD 2021 reads and writes them.
- DxfTable.ClearTableStyleOverrides of 0 on a table of 400 rows takes 9 ms on .NET Framework 4.8, where 13.4.0
  took 22.
- An attribute of several lines keeps its width factor; HandOverTo leaves the new entity its own extended data
  where the old one has none.

Details in CHANGELOG.md.

Earlier releases: https://github.com/nguyenthanguth/GeometryHelper/blob/main/CHANGELOG.md