Tessella
* When a tiling is too small or too irregular for its exact symmetry classes to be defined, the overlay now colours vertices by the symmetry of the patch as drawn, instead of by a grouping that answered no clear question.
* A single polygon is now shown as the one class it obviously has.
* The summary now names which measure it used, so counts from different tilings are no longer confusable.
Features:
* Add polygons from a palette, or by clicking any boundary edge, with automatic validation that keeps a proper edge-to-edge finite tessellation.
* Editing tools: eraser (vertices, edges, polygons), interior insertion, and "Add Copy" to grow a tiling by welding on a copy of itself under a plane isometry (translate, rotate, reflect, glide reflect), snapping to exact anchors.
* Selection and styling: select by click, colour or shape; recolour with a built-in colour picker.
* Pan, zoom and rotate the canvas; export to SVG and DOT.
The app is a thin WebView wrapper around the same client-side editor that is published on the web and as a PWA. Everything runs on-device: no network access, no accounts, no trackers.
- Author: Mario Càllisto
- License: Apache License 2.0
- Website
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Versions
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.
Download F-Droid-
This version requires Android 10 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Download APK 1.9 MiB PGP Signature | Build Log
-
This version requires Android 10 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Download APK 1.9 MiB PGP Signature | Build Log
-
This version requires Android 10 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Download APK 1.9 MiB PGP Signature | Build Log
* The uniformity overlay now colours vertices by their exact symmetry class, covering every vertex instead of approximating from the visible patch.
* Updated the underlying tiling engine and build toolchain.
* Rebuilt on a validated tiling model, so tilings are checked for consistency as they are constructed.
* Updated the underlying tiling engine and build toolchain.
* Added a banner image to the F-Droid app page.