Wingeom (778K) for
Windows 95/98/ME/2K/XP (31 Dec 2005)
31 Dec: The Other|Simulprint feature (printing more than one Wingeom diagram on a
single sheet of paper) was crashing frequently. I think I have fixed the problem. We’ll see.
28 Dec: Added a new tesselation window for spherical geometry. I await suggestions
and reports of bugs.
In response to users reporting difficulty opening files
by double-clicking file icons, new versions have been prepared that deal with
file-naming conventions that allow spaces (and extra periods).
See the FAQ.
8 Nov: Posted the
Polish version today.
6 Nov: Added the unique common perpendicular for
ultraparallels to the hyperbolic Line|Perp menu.
3 Oct: A user reported being able to drag a vertex across the boundary
of the hyperbolic window. That should not happen any more.
11 Sept: Just a really small (but logical) rearrangement of the main menu.
2 Sept: Repaired a couple of miscalculations that were making
some of the “classic” tesselations jump as they moved across the screen. In one
case, I had actually written “root 2” instead of “root 3” — how embarrassing
for a math teacher!
30 Aug: In 2-dim windows, the Units|3-point Conic dialog box now includes
general focus-directrix-eccentricity definitions. When axes are on the screen, it is now
possible to define lines and circles by means of equations.
15 Aug: You can now anchor measurements to designated vertices.
14 July: Alex Carnaru has made some
applications
available at his website.
7 July: Added two new windows, both for hyperbolic geometry.
I was inspired to do this by a daughter’s gift —
“Janos Bolyai, Non-Euclidean Geometry, and the Nature of Space” — which I read
during the winter months. The gift has now multiplied! There is a Poincaré window
for doing constructions, and a Tesselation window for just looking at the
intricate patterns produced by discrete reflection groups. I hope that there are
not too many bugs. I await suggestions. I also fixed one old (Euclidean) bug, which was
preventing points from being marked on segments and circles, when the
specified (dynamic) coordinate involved doing arithmetic.
30 May: The 3D slice-plane routine was ignoring the list of domain
vertices. Fixed that, and also added a slant-height option for cones. The new 3D
inventory of convex polyhedra with regular faces contained a few irregularities. These have
been fixed. The increased resolution feature installed on 14 March
can now be disabled by those users who would rather not have the added file size.
In addition, it is now possible to assign a filename to the graphical display,
using the Windows enhanced metafile format.
6 Apr: Of course there was a (minor) bug in the new great-circle option — I forgot to provide a description of the procedure for the History. I also discovered a couple of old bugs — one which kept the Face inventory from repopulating itself, and another that caused a crash if you
tried to retrieve a file in which some surface had been changed from opaque to transparent and
back again.
5 Apr: A user suggested that it would be helpful to be able to draw arcs
of great circles in 3D, instead of complete great circles. Now you can.
3 Apr: A user pointed out that in 3D Wingeom the meaning of “slant height” is not
clear. Indeed, it was not even clear to me. The pyramid dialog box now spells out three options
for choosing the height of a pyramid.
30 Mar: Many more polyhedral models have been added to the 3D Units menu, and
there is a new interface as well — the menu had become much too
cumbersome. Now there is a dialog box that stays on the screen and lists all the
options. The inventory includes all of the convex polyhedra whose faces are
regular polygons, as named by Norman Johnson in 1966. If you do not know what a
snub disphenoid is, now is your chance to find out. I also fixed a bug that was
hiding the 3D cutting-plane dialog box when Enter was pressed.
20 Mar: Additions to 3D|Units: “Random” prisms, pyramids, and tetrahedra
allow you to edit the shape of the object — you can slide one base of a prism independently
of the other, for example. The program no longer asks you to change the default edge length
for library polyhedra unless you want it to. Fixed a couple of bugs in the slice-plane
dialog.
14 Mar: Thanks to a suggestion from an user, the clipboard
graphic routines have been improved, which should enhance the appearance of
Wingeom diagrams embedded in MS Word documents. Also fixed a related bug that
sometimes altered the size of supplementary text insertions when the diagram
was copied to the clipboard.
2 Mar: In 3D, the polyhedral attachment procedure had occasional
difficulty when a face was attached to itself or to a parallel face. Should work better now.
23 Feb: Fixed a cutting-plane error that was introduced on 14 February.
17 Feb: Supplementary text inserted into a diagram can now be
rotated.
14 Feb: There are two new ways to define cutting planes in 3D.
11 Feb: A user reported that two of the 2D tesselations were in
fact duplicates, instead of being mirror images of each other. An interesting oversight,
which has now been fixed. The 2D fill-polygon dialog now lets you use the background
color, and the color of the lattice-point background now responds immediately when you
request a change.
8 Feb: A user reported that sectors defined by negative angles
were not being filled correctly in 2D. Now fixed, I hope.
6 Feb: A user reported that [exp] was not being
recognized in the user-defined-functions dialog. Now fixed, I hope.
2 Feb: It should not be possible to delete a point that is needed
for the definition of an active element (line, circle, etc) in a diagram. The program
was allowing such deletions, however. For example, users could request the
removal — as a group — of two vertices on a line that contained only three vertices.
Such requests will now generate error messages, as they should.
31 Jan: Minor corrections: The text windows (help files, notebooks,
tables, etc) were losing their carets (the blinking thing) now and then, and were not
opening files correctly.
15 Jan: It seems that the old “search” function that I installed years
ago in text windows no longer works under Windows XP, so I had to revise it.
6 Jan: Somehow the Measurement dialog box was left out of the German
version. Someone noticed, and now it is back in place. Happy New Year!
2004 History.