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Other Resources
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Hyperbolic Games |
Kali |
SnapPea |
Non-Euclidean billiards in VR |
Body coherence in curved-space virtual reality games |
Recent Updates
2022-03-08 | KaleidoPaint |
Removes a no-longer-valid constraint from KaleidoPaint 2
that was preventing the pen from resizing correctly when
the aspect ratio was set to an extreme value. Thanks to
Francine Champagne for reporting this bug.
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2023-01-23 | 4D Maze |
Added Polish translation, thanks to Marcin Pilarski.
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2022-12-28 | KaleidoPaint |
Drawing title appears in navigation bar on iOS 16,
to allow more space for the drawing itself.
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2022-10-10 | KaleidoPaint |
Entire app re-written in Swift and SwiftUI.
File browser lets you organize your drawings into folders.
File browser supports iCloud Drive as well as local storage on device.
Color picker offers a choice of five color selection methods
(grid, spectrum, sliders, eyedropper or hex code) and
a user-customizable saved-color palette.
Separate line color ("paintbrush") and fill color ("paint bucket").
You can copy the color of any dot, line or filled region directly
to the paintbrush, the paint bucket or any other
dot, line or filled region.
You can copy the thickness of any dot or line
directly to the paintbrush or any other dot or line.
Options to "change all of same color", "change all of same thickness"
or "delete all of same color".
Exports images to any folder.
Option to export images with transparent background.
Adjustable parameter for less vigorous or more vigorous line smoothing.
Simple slider-based interface to adjust drawing's aspect ratio and shear.
Default grid alignment is now consistent among the symmetry patterns
*2222, 2222, 2*22, 22*, 22×, **, *× and ××, in the sense that
mirror lines and rotation points agree, to make it easier
to see the relationships among those symmetry patterns.
Symmetry panel now positions the buttons for the families
(**, *× and ××), (22*, 22×) and (*2222, 2222, 2*22) consistently,
so you can easily see what symmetries change and what symmetries
stay the same as you switch from one pattern to a different pattern
in the same family. This also lets you see how the drawing's symmetries
relate to the pattern's name in orbifold notation.
Many thanks to Francine Champagne, Amber van Hoek and Geneviève Crabe
for their extensive help improving KaleidoPaint. KaleidoPaint is
far better thanks to their ideas.
Special thanks to Francine for creating the icons
for the symmetry pattern buttons as well as
for her instructional videos and web pages.
Special thanks to Amber for creating KaleidoPaint's elegant icon
and for providing spectacularly good drawings for KaleidoPaint's
App Store screenshots.
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Contact Jeff Weeks