WhatsNew for Tektosyne 6.2.0

This file contains the version history for the Tektosyne Library, starting with the initial release for Java. Please refer to the ReadMe file for general information. Entries link to weblog posts with further details where available.

Version 6.2.0 (released 2018-03-25)

See Tektosyne 6.2.0 Released for more information.

• GeoUtils & MathUtils: Updated Javadoc for use of ThreadLocalRandom since 6.1.0.
• GeoUtils:
  • randomPoint: Added overload that takes a bounding RectD.
  • Added method randomRect with a given bounding RectD.

Planar Subdivisions

• Subdivision.intersection:
  • Fixed output faces incorrectly mapping to the unbounded face of an input Subdivision. This happened when all incident edges of an output face were from the other input Subdivision.
  • SplitEdgeResult.updateFaces: Fixed face mapping not being updated for twins of current edges.
  • Added extensive unit tests, both random and non-random.
• SubdivisionMap:
  • from/toFace: Added default implementations that throw UnsupportedOperationException.
  • Added interface SubdivisionFullMap that extends SubdivisionMap to support edges and vertices. The additional conversion methods also throw UnsupportedOperationException by default, allowing selective implementation by clients.
• SubdivisionLinesTest: Added more factory methods to create subdivisions.
• SubdivisionPolygonsTest: Actually added factory methods promised in Javadoc…

Voronoi Diagrams

• Allowed special case of only two generator sites, with a single edge separating them and no natural vertices.
• VoronoiResults.voronoiRegions:
  • Fixed invalid result when edges exactly hit corners of the clipping rectangle.
  • Source: Extensive rewrite for two-site support, bug fixes, and general legibility.
• VoronoiTest:
  • Added tests for both cases described above.
  • Random Voronoi test now also randomizes boundaries and runs repeatedly.
  • Extracted generation of random Voronoi diagrams as factory method.

Version 6.1.0 (released 2018-03-01)

See Tektosyne 6.1.0 Released for more information.

• Updated to Java SE 9.0.4. The precompiled library JAR still targets Java SE 8.
• Added proper manifest to library JAR file.
• GeoUtils, MathUtils, Tests & Demo: Changed Random to faster ThreadLocalRandom.
• NodeList1/2Test: Changed deprecated “new Integer(…)” to Integer.valueOf(…).
• PointI.toString: Fixed coordinates being labeled “width/height” rather than “x/y.”
• Demo: Improved tooltips on numerical Spinner controls.
• ReadMe: Removed notes on Java and JavaFX issues which appear to be obsolete as of Java SE 9.
• Source: Changed project from NetBeans to IntelliJ IDEA.
• Source: Fixed minor issues detected by IntelliJ IDEA.

Float/Double.MIN_VALUE

• Float/Double.MIN_VALUE is the smallest positive value, not the smallest negative value as for integral types. NEGATIVE_INFINITY must be used instead, or algorithms will fail for negative arguments.
• Float/Double.MAX_VALUE works the same as for integral types but was also changed to POSITIVE_INFINITY where needed for symmetry.
• Fortran.max/min: Changed default values for Float/Double arguments from MIN/MAX_VALUE to NEGATIVE/POSITIVE_INFINITY.
• RectD.circumscribe(PointD...), SubdivisionSearch.Trapezoid (internal use): Changed search initializations from MIN/MAX_VALUE to NEGATIVE/POSITIVE_INFINITY.
• Changed unit tests for the cases described above to include negative values.

Voronoi Diagrams

• Fixed Voronoi edges being output twice when they do not touch any vertices, only the clipping bounds.
• VoronoiResults.voronoiRegions:
  • Fixed invalid result when a Voronoi region must be closed over three corners of the clipping rectangle. Previously this case was mistakenly closed over the opposite single corner.
  • Fixed open regions not being closed for exactly horizontal or vertical edges.
  • Added unit tests for the cases described above.
  • Upgraded some assertion failures to exceptions.

Version 6.0.1 (released 2017-04-08)

Fixed several FindBugs complaints.

• PointDComparator/X/Y: Implemented Serializable interface for compatibility with serializable collections. This also required default constructors that leave epsilon at zero.
• MultiLineIntersection: Added exceptions for illegal MultiLinePoint.Line location values.
• PolygonGrid: Changed switch/case statements without default to simpler if/else statements.
• RegularPolygon.inscribe: Clarified intentional truncating integer division.
• SubdivisionSearch: Several small changes to shut up FindBugs, no functional differences.

Version 6.0.0 (released 2016-12-14)

Complete rewrite in Java SE 8u112 with JavaFX demo application.

Version 1.0.0 (released 2002-05-27)

Initial release for the .NET Framework, updated through version 5.6.6 (2015-09-30). See the WhatsNew file packaged with the .NET edition for a complete version history of that edition.