CogSketch Revision History

New in v1.17:

• Improved representation and justifications for glyphs that represent relations. This leads to better analogies, among other things.
• Automatically generated namestrings for relations now give more information. Gives better feedback to user about what CogSketch thinks the relation represents.
• Improved handling of analogies involving qualitative directions.
• Bug Fix: In exported ink files, timestamps no longer end in "d0".
• Bug Fix: When using Mass Image Export, background images had not been included in the exported images. This has been fixed.

New in v1.16:

• When rendering thin lines (currently defined to be less than 2 pixels in width), OpenGL lines will be used. When rendering thicker lines, OpenGL polygons will be used. On computers that support full-screen anti-aliasing, you won't notice much of a difference. But some computers with lower quality graphics processors only support line anti-aliasing, so this change will improve the appearance of thin lines while still giving the advantages of polygons for thicker lines.
• Lines used on the Voronoi and Positional layers will now always be one pixel wide. Rendering speed for these layers has also been improved.
• Ink- and voronoi- processor crashes and restarts are now recorded in the sketch history. This is mainly to help with debugging and these events are not included in the history export files.
• Worksheet designers can now control whether or not the Tutor/Feedback button is available.
• Worksheet designers can now control whether or not users can assign their own namestrings to glyphs.
• Worksheet solutions can now be password-protected.
• Worksheet designers can have the tutor give advice based on quantitative ink comparisons to the solution.
• Worksheet designers can lock glyphs in the workspace, preventing students from moving, rotating, resizing, deleting, changing the conceptual label, or changing the namestring.
• Improved arrow interpretation.
• Inferences from annotations are now justified in an improved way. Also such inferences are now automatically recomputed if they depend upon the ink in the annotation glyph and/or the glyphs annotated. So, for example, if an annotation depends upon the direction of a glyph that looks like an arrow, and that glyph is then rotated, the inference about the arrow's direction will be automatically redone.
• Improved analogies used by the tutoring process.
• Worksheet designers can now control whether or not the tutor warns students about extra glyphs that they may have drawn. This is independently controllable for each acceptable collection, relation, and annotation. So, for example, a teacher may allow students to draw extra rock layers but have the tutor generate warnings if the student draw extra faults.
• Improved tutoring suggestions about missing entities.
• Tutor can generate suggestions about glyphs that have not been labelled (i.e those for which the student has not told CogSketch what they represent).
• CogSketch can send sketches via email. Related to this, users can opt-in to have CogSketch automatically send us their sketches to improve our research data.

New in v1.15:

• Fixed a bug in the Backup and Restore Knowledge-Base menu options — fileutils.fasl was not being included in the executable build, so users would get an error message when they attempted to backup or restore the KB.
• Backup Knowledge-Base remembers which folder you selected so that Restore Knowledge-Base can use that as a default to make it easier for you to find your backup.
• If Software Developer Mode is enabled in the preferences, the following options will now appear on the Development menu even when no sketch is active (previously you had to open a sketch before you could see these options): KQML Server Status, Memory Status, and Threads
• Previously, when CogSketch attempted to show a web page (when showing knowledge about a glyph, for example), if a browser window was already active, sometimes it would not display the newly requested page. This now works more reliably.
• Under some conditions, drawing line-segments on the voronoi layer could cause a crash. This has been fixed.

New in v1.14:

• Fixed a bug in the edge-handling perception code.

New in v1.13:

• Improved ink rendering.
• Improved user-interface. Hopefully it is more clear how to draw glyphs, arrows (relations), and annotations now. Some clutter has been removed from the toolbar and put in the main menus instead. Added a right-click entry for editing glyph properties (conceptual labels, namestring, etc.).
• Fixed some inconsistencies in selecting font sizes and line thicknesses.
• Fixed the "Reposition Text Label" menu option. (It would cause CogSketch to freeze until you had clicked on another window and then clicked back on a CogSketch window.)
• Added two new options for worksheet designers — you can now select the user-interface skin for the workspace and you can select the initial interaction mode (tap-select, draw-glyph, etc.).
• undo / redo
• Changed grid location so that there is a grid intersection at {0,0}. Previously, {0,0} was in the center of a grid square, which seems less intuitive.
• We now prevent users from making interaction-mode changes while drawing glyphs. Previously the UI allowed users to do this, but CogSketch would get very confused.
• When resizing glyphs by dragging one of the corner hotspots, aspect ratio is now preserved by default. If you hold down the control key, you can override this. Previously, it was the other way around — aspect ratio was only preserved if you held down the control key.
• Added right-click menu option for metalayer glyphs that represent subsketches — you can now edit subsketch properties directly from the metalayer.
• Fixed a major bug in the KQML-based API. It had been an older API developed for sKEA rather than the newer API described in the docs that install with the executable.

New in v1.12:

• Bug fixes in the Qualitative Mechanics code. Also now includes all the correct QM rules (v1.11 had some old and incorrect rules).
• It was possible to get the ink-processor stuck in a disabled mode if you slid the pen/mouse while double-clicking a glyph. That’s been fixed.
• The glyph properties editor for glyphs that represent relations on the metalayer was not always showing the correct values for the relation’s arguments. This has been fixed.
• Perceptual Sketchpad example #1 failed to build a comparison between the two entities. This has been fixed.
• CogSketch now supports KB Patch Scripts, so that we can send out updates to the knowledge-base without requiring you to re-download the entire knowledge-base.
• You can drag sketches from Windows Explorer to the main-pane of CogSketch (the window with the dark-gray background).
• Removed some old pre-perceptual-sketchpad menu options that didn't really work all that well:
  • Compare Glyphs
  • Mark as A
  • Mark as B
• Right-click menu now has option for editing the glyph properties.

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