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Free and open source knotworks creation software Knotwork Editor is a free and open source graphical application that can create knotworks in a celtic, arabic or viking style. User draws a graph defined by vertices and edges, that gives the basis for building the knotwork. Here are some key features of "Knotwork Editor": Basic editing: · Place new vertices · Join vertices to create edge · Move vertices and edges · Delete selected elements · Save and load graphs, in a specific '.kwk' file Knotwork creation: · 'UP' edge the reference thread is passing over the other thread · 'DOWN' edge the reference thread is passing below the other thread · 'OPPOSITE' edge the two thread cross the edges without crossing each other · 'LONG' edge the two thread stay parallel to the edge, without crossing each other and without crossing the edge Graphical options: · The visual style of the graph can be chosen between several knotwork styles: celtic, arabic, round, flat. It's difficult to describe them, so please try them ! · It is possible to use of a scalable grid (square, or triangular) to place new nodes · The grid origin can be changed to any point, possibly one existing node (press TAB to place on the closest node) · A background image can be used to help design the knotwork · Different parts of the knotwork can be displayed. The knotwork itself, the graph, the nodes, the control points or the ghost nodes and edges, which are structures created by the program to help building the knotwork. Manipulating the knotwork: · Get the dual of the graph : the same knotwork (in theory...), but with a different graph · Pruning of the graph: suppress all nodes connected to only one edge. Useful for one looking for minimal version of the graph. · Graph information: number of edges, number of vertices, with or without ghosts, adjacency matrix of the graph Requirements: · Java 1.6 or later What's New in This Release: New features: · The width of the knotwork can be modified · added some icons for the menu · added a tree view of the Knotwork Bug fixes: · updated the dialog for Knotwork style · The placement of anchors have been updated (-> centroid of polygon instead · of centroid of vertices) · Fixed problem of edge selection when using snap grid · Fixed curve computation for ghost edges Code: · implemented generic for graph structure, to reduce class casts · Each Knotwork style is now a separate class, allowing more modular design · added KnotworkDoc class, to separate geometrical data and display options · uses library javaGeom-0.6.0

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