Wingeom (815K) for Windows 95/98/ME/2K/XP (24 Dec 06)

24 Dec: It was suggested that the 3D window ought to be able to draw Dandelin spheres automatically. Now it can.

22 Dec: Fixed a bug that caused the 2D program to hang in Animate (auto) mode if the polygon Fill dialog had been opened.
19 Dec: The Hungarian, Polish, and Slovak versions are now up to date.
4 Dec: The Dutch and German versions are now up to date.
28 Nov: Added a “pyramid of cubes” to the 3D Unit menu. Also fixed a small bug that was causing the 2D function Unit|Duplicate to incorrectly copy some lines and segments.
22 Nov: The Portuguese version is now up to date.
19 Nov: A user wondered why the “whole figure” tracing option was not working in 3D. It should be now.
15 Nov: Improved the PiCTeX code for tesselations, especially for hyperbolic examples. Not perfect yet, but getting there. Also discovered how to word-wrap my help texts. Will extend this feature to the foreign-language versions when free time permits. Until then, I await news of unintended consequences.
5 Nov: You can now control drawing attributes for lines and circles in 2D windows (see Edit menu), and generate PiCTeX code for tesselations.
20 Aug: The Portuguese version is now up to date.
12 Aug: The German, Hungarian, and Slovak versions are now up to date.
3 Aug: The areas and circumferences of circles in the hyperbolic plane were not being measured correctly. Now they are.
31 Jul: Added a latitude-longitude polyhedron to the 3D Units menu, and also fixed the mirror-image switch in the Units|Polyhedral|Classics dialog box.
27 Jul: A user thought it would be convenient to have isosceles trapezoids available in the 2D Units|Polygon menu, so now they are.
21 Jul: As requested by a user, it is now possible to attach clipboard graphics to a vertex.
20 Jul: In the spherical tesselation window, File|Copy to Clipboard was disabled. It is working now.
18 Jul: The Polish version is now up to date.
15 Jul: Posted the Turkish version today. Also noticed that the 3D Edit|Faces inventory was not being updated after certain constructions. and fixed that as well.
8 Jul Made a couple of minor repairs to the toolbars in the spherical and hyperbolic windows (they were showing items that they should not have). Updated the Dutch version.
3 Jul: Developed the hyperbolic window some more — you can now intersect horocycles and hypercycles with each other and with lines and circles (via right-clicking), and put sliding points onto them. Also noticed that the Notebooks needed to be enabled in some of the windows (hyperbolic, spherical, and kites), so files saved in these windows might possibly crash when reopened. Sorry for the inconvenience.
1 Jul: Added a couple of new 3D construction items: In the Linear menu, you can create dihedral angles of specified size by attaching regular polygons to existing edges, and you can create regular polygons in the Unit menu. Using these items, it is now much easier to create polyhedral-net animations. See the demonstration files.
28 Jun: Fixed a couple of minor bugs. The new macro feature was affecting the filename display after saving a file, and the hyperbolic window was not fully clearing itself (hypercycles and horocycles) when File|New was clicked. Should be better now.
26 Jun: Posted the Dutch version today.
25 Jun: A couple of users reported some minor bugs in the most recent version. I think that they are repaired.
17 Jun: Several changes and corrections: At a user’s request, there is a new Line|Vector Sum construction in both 2D and 3D windows, and the 3D Linear|Perpendicular menu also has a new item called Plane Normal. All the macro items have been moved into a Macro submenu of the Edit menu, (now including the spherical and 3D windows). There are also illustrative examples of macros in the Edit help text. A couple of macro bugs were fixed as well; no doubt there are more. The 2D dialog box Point|Random Point on Circle was not working, but it is now. You can now put arrows on 3D segments; see the View|Highlight Segments dialog box.
16 May: Fixed a small bug that was causing the Anim|Graph|View dialog box to reject negative numbers.
14 May: Because there seemed to be some interest, I installed a “tip of the day” dialog box. If you do not like such things, just uncheck “show tips” when you first see the box, and it will stay hidden. You can access the dialog from the main Help menu if you change your mind, however. User feedback on this feature (including suggestions for new text) is of course welcome.
25 Apr: A user pointed out that the 2D program was crashing if the Circs|Poincare dialog box was used to request a line through the center of a circle. That is now fixed, I hope.
29 Mar: At a user's request, it is now possible to right-click movable points onto equidistance curves in the hyperbolic plane. I was so dismayed by the resulting size of the program, however, that I have been keeping this new feature a secret for several days, until I could find a way to make my code more economical. Now I think it is ready (the new file is smaller than the previous version). If you notice any new anomalies, please let me know.
9 Mar: In the hyperbolic window, points that were clicked onto proper arcs were not holding their positions when dragged with the mouse. That has been fixed.
11 Feb: A user pointed out that the help texts for the new spherical window were for 3D windows; they are now copies of the texts for 2D windows. Also, the program did not reject out-of-bounds data for the ring-of-circles construction; now it does. The German version is now up to date.
3 Feb: A user pointed out that the File|Save menu item was enabled even when the file was empty, thus allowing you to trying saving an empty file, whereupon the program would crash. That should not happen any more.
2 Feb: Added radian-mode versions of the trigonometric functions to the function library. They are named sinr, cosr, tanr, and so forth. These are needed for the new spherical geometry window, and they are available generally.
27 Jan: Forgot to announce a few weeks ago that the measurement dialog box now has two new buttons, one to switch the display on and off, the other to switch the defining formula on and off. Thanks to a user for this suggestion. Macros were not transferring color; now they are.
25 Jan: A user noticed that 2D windows crashed if closed while the toolbar was open. I hope that is now fixed.
23 Jan: The Hungarian and Slovak versions are now up to date.
22 Jan: For some reason (which I do not understand), the Linear|Altitudes submenu was grayed out in the most recent version of 3D Wingeom. It seems to be ok now.
17 Jan: The Polish version is now up to date.
12 Jan: The Portuguese version is now up to date.
8 Jan: In the new spherical window, a crash was produced by trying to attach a regular polygon to a segment whose length is too large for the requested number of sides. This has been fixed, I think.
7 Jan: A user reported that the excircle constructor in the 2D window was not working. Indeed, this got damaged when I was enabling the excircle constructor for the new spherical window, because the two windows share a lot of coding. Should be ok now. Keep me posted on any other items that I might have recently damaged.
1 Jan: The 2D inventory of lines was incorrectly reporting negative y-intercepts (in analytic mode). In the new spherical windows, you can now control the color of the “terminator” (which means that you can make it disappear if you want to).
2005 History.