CHANGELOG.md

0.99.4

New Features

• Allow gradients for polygons
• Improved dragging of images and texts
• More numerical routines for integration:
  • Romberg
  • QUADPACK routines
  • Gauss-Legendre
• Docs for transformations
• New attribute ignoredSnapToPoints
• New attribute for ticks: useUnicodeMinus (default true)
• New board attribute maxNameLength: Controls the maximum number of digits of automatic labels. The default value has been reduced from 2 to 1
• Allow shortened math syntax in Text.generateTerm() and in texts with <value&rt;-tag
• Better support for the method bounds() for curves, texts and polygons
• Allow gliders on polygons
• New methods setMax() and setMin() for sliders.
• Extend riemannsum to two function graphs
• Introduce Boolean attribute disabled for button, checkbox and input
• Improved dump methods: toJessie() and toJavaScript()
• New method: intersection of two convex polygons with the algorithm by Sutherland-Hodgman
• Board selection mode: Allow a graph to be in a selectionMode by calling the function board.startSelectionMode(). Once in this mode, the mouse allow to draw a rectangle selection on the board. To stop selectingMode, the function board.stopSelectionMode() must be called.
• First implementation of texts as foreignObjects in SVG with attribute externalHTML:false
• New method dumpToCanvas() for the SVG renderer
• New construction variant for slope triangle based on just one glider.
• Introduce property margin for lines. Controls where infinite lines end.
• Allow arbitrary size units in moodle plugin.
• New functions JXG.Math.sign(), JXG.Math.gcd()
• New function JXG.Math.relDif() computes the relative difference between two numbers
• Improved function plotting. Logarithmic curves should reach to the boundary of the canvas now, i.e. improved plotting of asymptotes.
• Update JessieCode parser
• New board attributes: zoom.min and zoom.max. This attributes allow to limit the zoom factors. zoom.min limits zoomOut (click on -) and zoom.max limits zoomIn (click on +). zoom.min supersedes zoom.eps whis is deprecated. zoom.min defaults to 0.0001 and zooom.max to 10000.0.
• Improve plot quality of low-quality-mode function plotting.
• Use linear interpolation for animation. If interpolation is set to false in moveAlong() linear interpolation is used.

Bug fixes

• IE bug with innerhtml
• Intersection of curve with line
• GGB reader
• SnapToGrid
• Bug fix: setLabel, label for integral
• Improved ticks
• Bug fix: X() and Y() of hyperbola
• Bug fix: animation callback is not executed
• Handling of frozen elements: allow frozen elements to be draggable
• Bug fix: Value() method for reflexangle and nonreflexangle
• Bug fix: deepCopy
• Make pointer events more stable
• Bug fix: signedPolygon
• Improved isPoint()
• Enable polygons with no vertices
• Add mouse wheel support to devices which support pointer events.
• Fix hatch marks
• Bug fix: dragging curves on touch devices.
• Bug fix font-size of input and button elements.
• Bug fix: slider.setValue()
• Bug fix: exclude the border-width when the reading the dimension of the canvas.
• Increase precision in root finding.
• fixed return value of deprecated function Board.createElement
• Bug fix: glider on undefined line. If one of the defining points is undefined the glider will disappear now.
• Fixed grid so that fractional upper and lower bounds of the grid (fractions of gridX and gridY) arent rounded to the nearest multiple of gridX and gridY.
• Bug fix: removeObject(turtle)
• Bug fix projectCoordToCurve
• Bug fixes for renderer='no'

Improved docs, unit tests

0.99.3

Important Notes

• The property glider.position for gliders on circular objects like arcs and circles was changed from radians to relative values between 0 and 1. This may result in a different behaviour of gliders on arcs. If you need the previous mode, you have to set isGeonext:true as attribute.

New Features

• This release contains the first steps of unifying the handling of elements defined by one coordinate, namely points, texts and images. At this point, all these elements allow the same construction methods and allow to be bound to an anchor element.
• Improved dragging of texts and images
• Much more complete docs. For example, all board attributes are now documented.

Bug fixes

• Fix visibility of texts with coordinates defined by functions, e.g. slider labels.
• Gliders on arcs and circles now keep their relative position.
• Allow use of user supplied board id in JXG.boards
• Fix group element to prevent infinite recursion if containing a dependent element
• Make ticks for sliders less obtrusive
• Improved (non-)handling of frozen objects
• Fix several bugs in GEONExT reader

0.99.2

Important Notes

New Features

• New element "checkbox" (ae3a29a1)

• New element "input" (a21b20d3)

• New element "button" (54b075ef)

• New elements "majorsector" and "minorsector" (13eaed86)

• New elements "nonreflexangle" and "reflexangle" (cae9ac35)

• New attributes touchFirstPoint and touchLastPoint for lines with arrow heads (60b613f1)

• New board attribute "ignoreLabels" to control when labels are chosen as drag elements (c8fb1063)

• New functions sinh and cosh in JessieCode (6302869d)

• New function log(x, b) in JessieCode (acc263dd)

• New method for points: makeIntersection() (93f25574)

• New method boundingBox() for polygons (23ee2d67)

• Every element which accepts a point as parent element, now also accepts a coordinate array or a function returning a coordinate array as parent element. An invisible point having these coordiantes will be constructed. (aa9e4738)

• Major speed up function graphs (a150405e, 13c3086c)

• Improved automatic ticks positioning for axes and lines (4a44a516)

• Enable dragging of sectors defined by three points (d00aec2b)

• Groups: Allow manipulations of group by translation, rotation and scaling.

  New group methods setRotationCenter(), setScaleCenter(), setRotationPoints(), addRotationPoint(), removeRotationPoint(), setScalePoints(), addScalePoint(), removeScalePoint(), setTranslationPoints(), addTranslationPoint(), removeTranslationPoint() (d21cb9b6)

• Add arc as a subobject to sectors (82a7002a)

• Improved docs (e9eaeed7)

• Axis: allow zero minorTicks (59a72325)

• Update moodle plugin (750c70df)

• Introduce new elementClass OBJECT_CLASS_TEXT (49638421)

• New generic method addParents() for GeometryElement (152ee279)

• Enable dragging of curves (152ee279)

Bug fixes

• Rotation of parabola based on a line defined by an ideal point (f6840b0)
• Subscripts in labels work again (82a7002a)
• Canvas renderer ignored line width zero (71669733)
• Consider corner cases for upper/lower riemannsums (bc398d2d)
• IE 11: show infobox on "over" event (1f82c9f50)
• setName(): slider labels are not longer overwritten (99877c0d)
• SVG line-endings of paths are set to "round" (e475c5e1)
• hide/show polygons having labels (519c0a7b)
• All edges of a polygon disappear if one of the defining points of the polygon is not real (5d3de96936)
• labels of curves, sectors, angles stayed invisible in case they were previously non existing (62eb6b94)
• Set attribute "needsRegularUpdate" of axis-ticks-labels to false. This speeds up rendering (6e9ce207)
• Fix typo in Board.getCoordsTopLeftCorner, which forced JSXGraph to access the DOM during DRAG mode (f5b8af8f)
• SVG markers in IE 10/11 (a35a2fee)
• Sector defined by two lines was visible (at the wrong position) if the lines were parallel (6acb23fe)
• Geogebra reader: Search for expression if element is not found (981ccd63)
• Geogebra reader: Support hidden axes (4bd103e1)
• CreatePolarLine: elementClass was compared with OBJECT_TYPE_CIRCLE (bc6b4bdd)
• Rotation of internal texts (0fa3fa9e)
• Rotation of VML texts and images (bc58740d)
• Rename the method RamenDouglasPeuker to RamenDouglasPeucker (18042970)
• Attribute generateLabelValue replaced by attribute generateLabelText (d5172614)
• Simplify joinTransforms() in abstractRenderer (5eb86b1f)
• Labels for sectors and arcs were not draggable (b914bba0)
• Type.trunc(n, p) did truncate for p=0 and round for p>0 (09331d4c)
• Do not generate sub and sup tags in texts if MathJax is used (ed9d94a4)
• Ignore touch move events triggered outside the board (8a7e22e8)
• Intersections involving circles with NaN radius (31d2900c)
• Circumcircle of colinear points has wrong intersections (0998a284)

0.99.1

Bug fixes

• Typo: polepoint
• Docs: JXG.Math.Numerics has been ignored

0.99

Important Notes

• This release contains a completely new plotting algorithm for function graphs and curves. If one wants to use the plotting algorithm of version 0.98, the attribute doAdvancedPlotOld:true can be supplied.

New Features

• Add new method Value() to Arc which returns the arc length (12e64c9)
• Allow jsxgraph board in a new window (opened by window.open()) (97742e7)
• Enable snapToGrid for text and image elements. (bf4bd35)
• New elements: polarline, polarpoint, radicalaxis (3d3154a2, 5f38b01b)
• New element: stepfunction (989cb1f15)
• Improved plotting algorithm (69f2f065b)
• New board attribute "showClearTraces:true/false" (988a855b)
• New function CardinalSpline. Catmull-Rom splines are a special case (33272063de1)
• Use the MS pointer API starting with IE11
• Improve the visual appearance of the navigation bar (b4cc30f08)
• New method for GeometryElement: setName() (9c6009c07)
• Speed improvements for text elements
• Improved positioning of text elements (39c6be44)

Bug fixes

• Fix and update documentation (9ec97a5)
• Fix arrowparallel element in reader/geonext (71c8799)
• Fix renderer/vml css position (#53, 149ffff)
• Remove CSS .navbar class definition (c4bc15f)
• Fix segment and glider on circle elements in reader/geogebra (6238190)
• Fix dynamic domain for function plots in reader/geogebra (d6479b6)
• Enforce the board's coordinate system for axes (#54, 25b6bc5, 8f7ff59, e4f6798)
• Fix SVG arrow head positioning (2899284)
• Remove pointerUpListener from document instead of the board container (bbcc73a)
• Fix visibility of labels on default axes (#73, 2dd0f4b)
• Fix attractors on curves with bezierDegree==3 (d8bcee9)
• Fix dragging of images on touch devices (#88, 04018a6d)
• Fix: angular bisector of parallel lines (#16, 2f8eb20fd)
• Fix: multiple mousedown events (338c7eb2c)
• Fix: VML renderer displays strokes with strokewidth==0 (565eeb9429)
• Improved intersection line-curve ()2fed72fff3)
• Bug fix Gauss-Bareiss determinant (a6a74c9ab)
• Fix inequalities (01a06bdac5)
• Fix case t=0 for cardinal splines (921a296)
• Fix slopetriangle issue #79 (374a8632)
• Fix visibility issue of polygon label (36a7e75f)
• Fix ticks with negative distance (#82, c821364a385)
• Fix visibility of polygon lines (#78, a82c50a1dc)
• Bug fix: very short arrow heads (a794ef81a)
• Bug fix: fill attribute for lines (5d7fc25c6f)
• Bug fix: Circumvent a bug in the Safari JIT comiler on iOS which affects JSXGraph's unzip (d965574c)
• Bug fix: snapToPoint, snapToGrid for linelines and circles (c1988ab5)
• Fix getParents() for GeometryElement (120f536f2)
• Bug fixes IE8 (eeeb0395d29)
• Fix UTF8.decode() (5bb5dd66)
• Fix text content parsing (ce157f194)

0.98

Important Notes

• The text element representing an element el's label was moved from el.label.content to el.label
• Speed improvements for SVG updates. This is realized by removing the whole SVG tree from the DOM, updating it and then re-adding it to the DOM. Please note that during some event handlers (e.g. update) the DOM elements that belong to the board that is updated CAN NOT BE FOUND by document.getElementById(). References to these elements need to be stored before the event handler is called. Also problematic are click handlers on elements on the board, in some browsers these might be ignored. To establish full backwards compatibility, a new board attribute called 'minimizeReflow' is introduced and has to be set to 'none'. To restrict this optimization to the SVG root node set it to 'svg' (default). For best optimization use 'all'.
• New Moodle plugin for Moodle 2

New Features

• Allow the user to forbid the emitting of events in JXG.Coords (49fa92d)
• New attribute "attractorUnit" for points (0a21d6e)
• Moved the label of an element el from el.label.content to el.label (d60dbd7, 4aecb4a, 087f2d2, 7e9d672, e443a7a, 2467aa2, #34)
• Extend board.select() (14d8188, 8a3184b, bd18995, bec25a4, e8460a1)
• The grid element can be restrained to a fixed area (30bc74f)
• New option "axis" for integral; value can be 'x' or 'y' with a default of 'x' (40c5585, 9d87782, 42e00cd)
• Slider max and min values can now be changed by setting its properties _max and _min (cb51daa)
• New element "slopetriangle" (b6a8107)
• Change element selection based on what was dragged last (a994fec, c9141c5)
• Sectors (incl. angles etc) can now be defined by two lines instead of three points (5d50e28, 0ba4ba1, 3714dff, 4c56a3a)
• Unify Sectors and Arcs (608c4e4, 03fac4c, 36eaaa2, f2256cf)
• New type for the riemannsum element (674cb34, bd0d0d0)
• Allow the user to set the maximum length of a tick label and the max precision (f4b9076)
• New Moodle2 plugin (6d11868, 0ba96fe, a54d8d2, 8c8f2fa, 2b76da3, 8a8625f)
• Texts may now be dragged by clicking anywhere in the text (a624b6d)
• Allow the user to not register mobile Safari specific gesture events (56b057a, 17a5179)
• Add new board attributes offsetX/Y (f8a0262)
• Points can now also be created with a coordinate array instead of 2 resp. 3 numbers (cfe4a43)
• Element name changes are now automatically reflected by its label (8aa9269, e9a9cf1)

Bug fixes

• Set the board quality to low during touch and ms-pointer events (f17ec49, c4aa38f)
• Make arrow heads exact (0a39704, 939339f, f1682d3)
• Make circles centers snap to points if the circle line is dragged (a80c07e)
• Fix touch and ms-pointer events (16f07d8)
• Speed up axis updates (997eba4)
• Attracting a glider to a point fixed (801b964)
• Fix missing curve update when a curve's isReal flag switches (a8e1683, 35dc2a7, 8589b8b)
• Fix Canvas and SVG root node size definitions (03a47fe)
• Hide the right angle indicator dot when the angle is hidden (e3f3bf3)
• Improve epub handling in Sigil (69b04c1)
• The integral label now considers the offset attribute (396ca30)
• Fix utils/type.sanitizeHTML() (0001071)
• Fix polygons (231dd4a)
• Fix point constraints handling (d5da0d0)
• Element highlighting in IE fixed (c8fe0be)
• Improved ms pointer api event handlers (1bc85b0)
• Fixed jumping html texts (01716b3, 857f2e2, fb9a1b7)
• Extend math/geometry.perpendicular to handle points that are far away (5e6c3d0)
• Improving automatic tick handling (8ca2380)
• Bugfix traced circles (f1532b1)
• Fix Board.getCoordsTopLeftCorner() (47ecb27)
• Fix ticks scale attribute (4afb67c)
• Reduce closures (6e06d65, fbd40ba, 6a8be48, 7c56513, e11c2a6, 7165e4a, #44)
• Fix the radius attribute of the angle and sector elements (6d11868)
• Fix point attraction handling (0582747)
• Fix Text.hasPoint() (608e697)
• Text position in WebKit browsers was broken (89a6d6a)
• Work around a dashed path bug in webkit (9c5ab12)
• Pie chart highlight fixed (ab75d6e)
• Fixed shear transformation (e0e8140)
• Element 'hash' renamed to 'hatch', 'hash' is kept as an alias (5b7ecd4)
• Point.free() now also removes transformations (8baa48d)
• generateLabelValue() should not be used for fixed ticks (d5f3821)
• Bugfix and performance enhancement of UTF8.decode() (#50, ecbf4af, 6044803, 576efbe, 53dadce, 124d94c, 88c9b44)
• Fix slider attributes and properties (11f2250, 2684070)
• Fix intersection arcs with lines (cb42d77)
• Fix integral start/end interval (b8365bf)
• Update the glider when the user leaves the drag mode (b75ad28)
• Fixed deleting an attractor (2a91eb2)

0.97

Important Notes

• Wrappers.js was removed. This includes the removal of several wrapper functions in JXG.Board. Please use their non-wrapped corresponding methods in Math, JXG.Math, JXG.Math.Geometry, and JXG.Math.Numerics (c857dc4, d8f8f6a)
  • angle, rad, distance: Use JXG.Math.Geometry.*
  • D, I, root, lagrangePolynomial, neville, riemannsum: Use JXG.Math.Numerics.*
  • factorial, binomial, cosh, sinh: Use JXG.Math.*
  • round, abs, acos, asin, atan, ceil, cos, exp, floor, log, pow, max, min, random, sin, sqrt, tan: Use Math.*
  • trunc: Use Math.floor
  • sgn: No replacement
• New makefile: make.py was replaced by a GNU make Makefile. Type make core-min to build a jsxgraphcore.js and see the Makefile for other build targets (245c1e3, 8d8ed2c, 824725e, 8b5aa0e, 160964c, b8f576f, 1c2ee4a, 057e05d, df4a13a)
• The GeonextParser now outputs JessieCode (https://github.com/jsxgraph/JessieCode) instead of JavaScript.
• Board attributes in JXG.Options were moved from JXG.Options to JXG.Options.board (3e39b82): showCopyright, showNavigation, takeSizeFromFile, renderer, takeFirst, animationDelay, zoom, and pan.
• The list of boards and the list of available elements were moved from JXG.JSXGraph to JXG (c0048e7, e202e15)
• Pstricks was removed
• Board.getElement was renamed to Board.select and will replace JXG.getRef(erence) in a future release (c857dc4, 92c18ac)
• Reorganization of the repository: All files in src/ were renamed to all lowercase and moved into subfolders (bb301e0, 5eaf33b, fe457c9, 66ba3f2)
• Intersection points now have a type value of JXG.OBJECT_TYPE_INTERSECTION (86a21fe)
• The board methods intersection, intersectionFunc, and otherintersection were removed. Please use the elements 'intersection' and 'otherintersection' (b76004c)
• The unused methods JXG.readOption and JXG.collectionContains were removed (f322fa6, 8879354)
• JXG.JSXGraph.registerElement was moved to JXG.registerElement (e202e15)
• XML parsing routines were moved from JXG.FileReader to JXG.XML (c2e25ac)
• Bugfix texts in headless environments (like WebWorkers or node) (97cb102)
• Export JXG namespace to WebWorker environments (f4816e1)
• Fix the size definition of SVG and Canvas renderers (e202a54, c0b40cc)
• Fix Tick creator function (41d97be)

New features

• Prepared "virtual finger" (2bd4583, d71230a, 11548fd, 11548fd, 3e7d1e5, 5134b0b, 45d3d76)
• Snap to grid for lines (86b2295)
• Hash marks for lines (#7, f8a6723, c2179a4, 2643817, ffbd40e, b548f59)
• Implemented Pointer API support (#18, 8820f3f, 4d22876, 235ee34, 97a3f6e, 24827d3, 535f871)
• Take CSS transformations of type matrix, scale, and translate into consideration (a1da3b7). This ensures better combatibility with EaselJS.
• New element 'tapemeasure' (f1698c2, e6bb86a, 5717f14)
• JXG.Math.Numerics.regressionPolynomial now also accepts arrays of JXG.Coords (2fef545)
• New linear regression algorithm TheilSenRegression in math/statistics (3fdd673)
• Polygon vertices will snap to grid if the polygon is dragged (19a5a1d)
• Implemented innerPoints attribute for ellipse (#20, 3a9180e)
• Configure and use linting tools, minor refactoring (c790fcb, 5ec6a53, 9f1b6c4, 2545716, 985ea61, ee2be46, b2d95ce, 18d32e0, 479e39c, 069033a, 3e39b82, e139837, 3234de5, 20c6b43, 7f58c56, 367596a, fa4f5ec, 99da70a, b8a9ebd, 85637c9, 224a2a8, 56a9bdc, 27ba870, fe457c9, ae9f7a3, 27a03fe, 9e9f429, e5e5216, 6533125, daa2239, 5e037b3, 8250d55, 1ed9914, ae9609d, 73fdd68)
• New helper function JXG.swap; Used to swap two elements in an array (bdea634)
• New optional parameter for ticks: generateLabelValue (7511ee7)
• New board event 'boundingbox', fired everytime the boundingbox changes (2dbeb60)
• Function and number arrays are allowed as parent elements for sectors, too (74f6482)
• A predefined div can now be provided to jessiecode/jessiescript tags (550dcd2)
• New arrow head for the SVG renderer (9b161a9)
• New tick property: tickEndings (7bfc59c)
• The interpolation along an array of (x,y) coordinates in Point.moveAlong() can be overriden (2ef875c)
• Implemented the AMD pattern (e1dd0fc, e202e15, e4d74e2, e2ef764, 2d76afc, c451f7c, 0aea31e, 0260f46, 14d1a1e, c53fb42, 1d13837, 3c2fa9a, 82dcf24, f707aab, 8695226)
• JXG.debugLine outputs the given debug strings and the line from which it was called (9e4460f)
• New build scripts using requirejs and uglifyjs (46e0237, ea12ae8, a53516a)
• JXG.merge: merge one object into another one without creating a copy (99bc1bc)
• New property for ticks: anchor, defines the position of the tick with value 0 and accepts 'left', 'middle', and 'right' (f8a6723, c2179a4, 2643817)
• Enable the use of the Google caja html sanitizer function if available. The use is controlled via the 'usecaja' attribute for texts (3a9180e, 3205b13)
• Don't analyze the content of a text if its new attribute 'parse' is set to false (3205b13)
• Allow specific Geonext tags in texts (935df2b)
• loadBoardFrom*() functions now accept a callback function which is called when the file readers are finished loading the construction (#33, 25aa537)
• Expose Turtle methods and properties to JC (f11c037)
• JXG.Dump preserves snapToPoint attribute (228567c)
• Improved availability of element properties and methods in JessieCode(7af504a)
• Polygon can be hidden independently from their borders (8e95f2c4, 3d219f4)
• The label of a curve will disappear if the curve is not real (209cfc1)
• Allow multiple versions of JSXGraph (arbitrary many 0.97 or higher, one 0.96 or lower) simultaneously on the same HTML page (2de1da4)
• Enhanced intersection methods for curves (c0491e7, ea23470, 1301d5e, afaa691, 2d5d668, 4c53147, 6fa16e8, 9de88fb, be247fd, 4df27a3, 7ba41bf, d030108)
• Preparations for a better integration of parameter normalization (d3f4ead)
• New algorithm GrahamScan in math/geometry to determine the convex hull of a set of points (33a9add)

Bug fixes

• Speed improvements in unzipping routines (b5cb640)
• Enabled file reader support for node (274eb21)
• Speed improvements for EventEmitter (8f05b9c)
• Fixed border placement of polygons (a72c31e)
• Set axis name to '' (a72c31e)
• migratePoint: remove old label (e2259cb)
• Handle snaptopoint/grid/attractors during creation (0f30c60)
• Fixed grids in inverted bounding boxes (e26214f)
• Fixed Point.Dist() in case one point is not real (8a51da4)
• migratePoint() label fix (8a51da4, edcf13c, 184c66f, 285de98, 2cd6613, 4e371dd, 7dc981d)
• prevent access to incomplete bezier segments (fd09f8e)
• fixed gliders on points (ccf2c58)
• prevent event bubbling on mouseup and touchend for navigation bar (#25, 860491c, 1694e4f)
• fixed attribute frozen (146a702)
• jessiecode: fixed NaN value (9ee04d8)
• migratePoint: new parameter copyName to enable the transfer of the point's name (6c0234a)
• Speed improvements for html texts and SVG texts (fabc54a)
• triggerEventHandlers now only accepts an array of events and parameters (5f88bac, 234c136)
• Bugfix conic (3a3605b)
• Speed improvements coords (4633732)
• bugfix JXG.Math.factorial (9f1b6c4)
• bugfix line label offsets (98b6a95)
• Update the glider relative position during suspended updates (3317a1e)
• Fixed ticks on "skew" lines (7bfc59c)
• Fixed a division by zero in the parabola element (e6c714a)
• Fixed traces of curve elements (3d6813b, 8f23d84, bbee2a4)
• Reverted text colors to black (1a28fc9)
• Handle degenerate conics more gracefully (ffe4f7d)
• Make projectCoordsToCurve() more robust for function graphs (0c0abb3, 7df9f48)
• Prevent double update for gliders (f34c724)
• Prevent endless loops in EventEmitter.trigger() (b751699, 9abb0d7)
• Fixed groups (#11, 4ed4feb, e424c63, 11699d2)
• Fixed JXG.Point.visit() (b16c713)
• Elements with the attribute highlight set to false now will never be automatically highlighted (25d986a)
• JXG.Dump lost required attribute values (4e69297)
• GeonextReader: Change the background color of the board (4e69297)
• Increase precision in MathNumerics.fminbr to make gliders stay constant on curves (5c8c02a)
• The labels of initially hidden elements will be shown when the element is made visible (a716501)
• Pass the visibility of a polygon down to its borders on creation (4b5af66)
• Bugfix ellipse hasPoint method (280f018)
• In case there is no label subelement in JXG.Options for a specified element the label attributes given by the user were discarded (397208b)
• Bugfix tick label rounding for values close to zero (ae93bac, aeabd18)
• Fixed polygon gliders (2f68165, 5745c67)
• Circumcircles created with the circle creator will use circle default attributes (501e916)

0.96

Important Notes

New Features

• Polygons can be dragged (402b92c, 4541ce3, 6187eb0)
• Introducing new GeometryElement attribute scalable (6187eb0)
• Angles can be fixed via setAngle() and freed via free() (5ee106f, b9bd601, 1f25a5f, 8e1bce6, ad857bd, 8d95d75)
• Image hasPoint now checks the whole image area (8d95d75, d96e6d7, a4e0bc5, a9f3f73)
• JSXGraph can be used inside node.js; Rendering to PNG requires node-canvas (ab00ec3, 6106356, 8b00933)
• Construction can be zoomed by dragging ticks (1215fba, bf01231, 818e013, 9ef977f, 31690db, bdf1159, b0e6f6a, cdb2ac7, 459fba6)
• 'random' option for Riemann sums (d498fa2)
• Documentation now lists events (a7ae116, da9b0a0, 63cc708, 66fb7a7, 13e4993,
• New interface EventEmitter which implements event handling (eeffbe1)
• JSXGraph can be run inside Windows 8 "Metro" Apps (1281086, b1935d8)
• GeometryElements fire events when an attribute gets changed (7fb8ab6)
• Introducing a .sketch file reader (08c8f02, de3c4b2, 3cf0d30, efc806d, 9febcdf, 9e19054, 8232d43)
• Enable Curve.X() and Curve.Y() for curves with bezierDegree=3 (10c8c3e)
• Intersection of segments (de10bc4, eef5264)
• New attribute alwaysIntersect for interesction points of e.g. segments to be shown even if the segments don't interesect anymore (9670c8e, 488946f)
• Introduce JXG.Math.Geometry.distPointLine() (9b0bad3)
• Curve-line intersection now respects property alwaysIntersect (856db81)
• Improved speed of freeBoard() (3d3dc72)
• The distance of ticks can be set via setAttribute/setProperty now (cb80999)
• GeonextReader now uses the viewport tag if available (d06a020)
• Implement boolean attribute hasInnerPoints for circles (84e0d58)
• Curves can be dragged (a729000)
• Restrict zoom with JXG.Options.zoom.eps (d63c8de)
• Get current JSXGraph version with JXG.version (c46d563)
• Implemented X() and Y() methods for labels (#17, 8acaa51)
• Zooming and panning can now be configured (#5, f7e7799)
• Segment labels are placed on 'top' (1b53f3a)

Bug fixes

• Fixed the return value of removeObject (0aa328f)
• Tick calculation with majorHeight and minorHeight equal to zero was broken (9bfcb47, e9535d2)
• Texts won't jump while being dragged anymore (2ba238e)
• Several documentation errors fixed (84f10ce, 917250a, 6277684, dcd0c6b, 394e149, fed7998)
• Bug fix: intersection of line with curve, where curve has curveType 'plot' (c10bbeb, 7e8c358, d5500e9, 0f7cb59)
• Fixed and improved groups (0145603, 5f9841b, de01c99, 7b03a70, 06bae53)
• Bugfix arrow head creation (6f90382)
• Arc/Arc intersections fixed (acac2e5)
• radar charts fixed (8b458b6)
• Added newline in Point.js (4054a7e)
• Include CSS transformations in the computation of the coordinates of the top left corner of the board (13226bf, 0c19743, c9b25d8, c3fc4f5, acf844a)
• Polygon labels fixed (#14, 3c4f4c5)
• fontSize given as a string caused problems (e2f94b0)
• bugfix createLabel() (8e5c8d1)
• 0 ticks are hidden again (3419ecf)
• Images now use the absolute value of the given height/width (1468387)
• Fixing turtle.hideTurtle(), turtle.showTurtle() (bc549a1)
• Remove ticks only of they exist (e74a68a)
• Work around a FF17 bug regarding SVG fill attribute with value 'none' (1760350)
• Bugfix turtle (b09af0e)
• Arrows can't be set on curves with less than two datapoints (75faf54)

0.95

Important Notes

• We migrated from subversion to git. To access pre-git changesets you can use our trac system that is still online. You can use this url and append the revision number to see the changelog http://sourceforge.net/apps/trac/jsxgraph/changeset/, e.g. http://sourceforge.net/apps/trac/jsxgraph/changeset/1234 for revision r1234.
• Merged coordinate parameters into arrays for all setPosition, setPositionDirectly, and setPositionByTransform methods (r2825)
• Old intersection functions are now marked as deprecated, you should not rely on them being available in future releases (r2846)
• Hooks have been refactored and improved. Please use on/addEvent resp off/removeEvent now to add or remove events to the board. The addHook, removeHook and updateHooks functions have been marked as deprecated and might be dropped in a future release (r2864, r2866 & r2867)
• The behaviour of board event handlers have been changed. mousedown and touchstart events started outside a board do no longer trigger any mouseup resp. touchend events (r2886 & r2887)
• Default names for texts, angles (af4701e, 18ac2ae)
• The offsets property has been renamed to offset (5ea97f5)

New Features

• Attributes for grid and axis can be given on initBoard (r2841)
• Scale ticks and represent the scale by appending a string to each tick label (r2842)
• JSXGraph can now be used inside WebWorkers (r2807, r2811 & r2874)
• Two finger manipulation of circles (r2896 & r2897)
• objectsList in Board holds the elements in order of creation (r2898, r2899 & r2901)
• added rgba values to RGBParser (r2912)
• Allow in Curve.hasPoint() for plots to start search at an arbitrary position (r2939)
• Animate the size of a point (r2950)
• Implemented minor and major arcs. They can be constructed by using the element type minorarc and majorarc or by using the element type arc with property type set to minor or major.
• New input specific events (877d5ac)
• New board option animationDelay which controls the animation fps (d093a9e)
• New options for texts: anchorX 'left', 'middle', or 'right' and anchorY 'top', or 'bottom' (78608c0, f1aa9de, 8d7f467, bc8cbd6, bbb607b, 7e69d11) and rotate (181ee73)
• Circles and lines have a new property snapToGrid. Whenever a line or circle is moved and this property is set, the parent points with the snapToGrid set to true will snap to grid once the users releases the circle or line (#3, 2a774e1)
• New option labels for Ticks. In case of special ticks the n strings given in labels are taken as labels for the first n ticks (c188efe)
• New options type, orthoType and orthoSensitivity for angles. See the docs for their meaning (8f0ed8c)
• New options for infobox which shows the coordinates of a point. Beside the text options, the number of digits can be adjusted. Default css class is JXGinfobox.

Bug fixes

• Fixed flickering of gliders on plots (r2828 - r2829 & r2876)
• Bugfix setPosition of text elements (r2833)
• Simplified creation of intersection points (r2833)
• Added error check in tangent creator (r2833)
• Offsets for ticks (r2834)
• Fixed ticks ($68, r2835, r2836, r2843, r2845, r2889, r2890 & r2925)
• Fixed JXG.Text.getSize() (r2837)
• Bug fix: createArrow, createArrowParallel: arrows are shown if strokeOpacity is a function with inital value 0 (r2849)
• Disabled and re-enabled drag highlighting devices (r2860, r2934 & r2935)
• Slowed down zooming with gestures (r2855)
• Fixed placement of labels (r2863, r2911, r2913)
• Transformation "reflect" on lines defined by ideal (infinite) points (r2872)
• Jumpy scroll wheel zooming fixed (r2873)
• Enhance sensitive area for points with non-default stroke width (r2877)
• Fixed issues with gliders on lines with at least one ideal point (r2878, r2880, r2882)
• Bugfix event handlers for elements (r2879)
• Using the touches property of the event object instead of targetTouches fixes some bugs (r2888)
• Fixed arrows (r2891)
• Enlarge the drawing region slightly to hide the small sides of thick lines (r2892)
• Rays through ideal points change their orientation (r2893)
• Fixed reflections: instead of JXG.Math.Geometry.reflection use transformations (r2894)
• Load all available renderers that could be used in the current host (r2900)
• Bug fix: Filled polygon in CanvasRenderer? in case one point does not exist (r2907)
• Use asynchronous Mathjax (r2914)
• Fixed JXG.Curve.bounds() (r2918)
• Remove deleted elements from their ancestors dependents list (r2919)
• Bugfix event handler flags (r2923)
• touchMoveHandler: Ignore slowpoke events (r2927 & r2929)
• reset board mode if no more touches are found (r2931)
• Bugfix: hide invisible grids (r2936 & r2938)
• Fixed tick heights issue in boards where unitX != unitY (r2940)
• Fixed move origin on touch devices (r2942)
• Adjust size of arrow heads at least for small stroke width values (r2948)
• Suspend update in JXG.freeBoard() to prevent dependency errors (r2949)
• Bug fix: layer for gliders (r2952)
• Bug fix: properties of gliders (r2953)
• Pass event objects to internal event handlers, if available (929cb40)
• Copy general element properties only when creating primitives (95603ef, d5f2b87, 1b54d9a, 5e0486d, 39b3e82)
• Do a full update after changing the properties of an element with needsRegularUpdate set to false (6463b8c, ff4fe3a)
• Angle texts are moving again (e9c68b1)
• Set margin to zero if the line has arrows set (6582086, bd7518a)
• Hide circles with non-real midpoints (381b287)
• Don't update ticks if board height or width equals zero (c7c2e23)
• Various fixes in GeonextReader (006c5da, 59ac4c2, 1fecf7a)
• Ticks are now deleted when their line is removed (bda7e7f)
• Text rendering speed improved (d4c0bf2, b955052, fa91ce0, 434c87b, 12b9922)
• Speed improvements for arcs and sectors (d2fdee1, e0ee6c9, 572d123, fdabf15, c6a70a4, 8acbb60)
• If no element is dragged or found, don't stop the event propagation (324f7c6)
• The radius of an angle can be set via setProperty() (bc0e21c)

0.94

Important Notes

• The property line.labelOffsets has been moved to element.label.offsets (r2765)

New Features

• Update build script: allow the user to choose the test server via --server (r2691)
• Implemented mathematical modulo JXG.Math.mod (r2698)
• Multitouch handling of lines in case one defining point is an ideal point and general improvement of multitouch dragging of lines (r2700, r2701)
• Make normals and parallels (to a line) through one point draggable (r2706)
• Improved gliders on lines defined by an ideal point (r2744)
• Added hex2rgb conversion (r2745 & r2746)
• Introduced the point options snapToPoints (r2758, r2759, 2760 & r2762)
• Label positioning (r2764 - r2767, r2769, r2770)
• Prevent reevaluation of a curve if neither the viewport nor the definition of the curve have changed (r2781)
• GeonextReader: visibility of labels of lines and circles (r2792)
• setProperty() called on a group sets the properties of all members of the group (r2794)
• Internal event handling system (r2795)
• Enabled transformations for data plot curves (r2799)

Bug fixes

• Fixed vertical navigation (r2684)
• Fixed a problem with the artificial endpoints of Catmull-Rom splines (r2688)
• Fixed typos regarding integral helper points in Options.js (r2690)
• Disallow dragging of elements depending on a glider (r2693 & r2694)
• fixes for circumcircle (r2695)
• degenerated case (r2695)
• circle should be draggable if defined by free points (r2695, r2696 & r2697)
• Fixed translation of lines in case one of the defining points is an ideal point (r2699)
• Fixed problems with degenerated circles (r2702)
• Fixed a bug regarding multitouch dragging (r2704)
• Use curve.Y() instead of curve.yterm() in the integral element (r2710)
• Update text in JXG.Text.setText()
• Deactivate mouse events as soon as the first touch events occurs to fix mixed mouse/touch events on the iPad (r2715, r2748-r2753)
• Update the board after setting a new radius (r2716)
• Created points in regularpolygon now have the type JXG.OBJECT_TYPE_CAS instead of the (free) JXG.OBJECT_TYPE_POINT (r2717)
• Refactored glider update (r2719 - r2722, r2724 & r2725)
• Fixed ids and names of parallel and normal far points (r2718 & r2723)
• Fixed polygons in GeonextReader (r2726)
• Fixed angles in GeonextReader (r2727)
• Bugfix orthogonalprojection (r2730, r2731)
• Fixed of lines as parametric curves (r2736)
• Added missing board update in JXG.Text (r2737)
• Glider on polygon fixed (r2761 & r2762)
• JXG.Line.hasPoint() fixed (r2763)
• Fixed Canvas- and SVGRenderer inside divs without explicit height/width (r2780 & r2801)
• Ticks with ticksDistance set and insertTicks: false are now displayed correctly (r2782)
• Fixed "undefined is not an error" bug on iPad (r2785)

0.93

Important Notes

• Renamed element perpendicular to perpendicularsegment. perpendicular now is a straight line instead of a segment (r2360)
• Mouse wheel zoom is disabled by default, you can enable it by setting the property zoom to true in JXG.JSXGraph.initBoard ($34 & r2369)
• Hooks 'mousedown', 'mouseup', and 'mousemove' have been renamed to 'down', 'up', 'move'. Those hooks work on mouse & touch devices. Their mouse equivalents now only work on devices controlled by a mouse. The corresponding touch versions are called 'touchstart', 'touchend', and 'touchmove' (r2514, r2515 & r2516)
• Removed obsolete method JXG.Turtle.evalCoords (r2378)
• JXG.Curve.{doAdvancedPlot,numberPointsHigh,numberPointsLow} moved to JXG.Curve.visProp. Use JXG.Curve.setProperty() to set them (r2489)
• Some of the subelements had to be renamed. Please check your constructions with this version and consult our documentation (http://jsxgraph.uni-bayreuth.de/docs/) if you're having trouble accessing any subelements. ($61 & r2623)

New Features

• New board properties to use in initBoard: zoom (Boolean, default false) and pan (Boolean, default true) ($34 & r2369)
• Element 'perpendicularsegment' replaces 'perpendicular' which now is a straight line by default (r2360)
• Element 'tracecurve' (r2372 to 2379)
• New methods for JXG.Polygon: addPoints (attaches new vertices at the end of the vertex list), insertPoints (insert new points behind an arbitrary vertex) and removePoints (removes arbitrary set of vertices) ($39, r2398, r2400 and r2401)
• Construction alternatives for lines: Use two functions returning the point's coordinates in an array or use one function returning the line's homogeneous coordinates ($9, r2407 & r2408)
• Traces can now have different visual properties than the traced element they belong to. Use the traceAttributes property of the traced element just as an properties object like in setProperty ($17 & r2410)
• The new Angle attribute type defines the look of the angle: sector, if it should be a sector all the time, square for a square (right angle)/parallelogram (general) to indicate a right angle, and auto for a sector in general and square if the angle is close to a right angle ($49, r2437, r2438 & r2479)
• Parallel lines are now constructed without an invisible parallel point (r2451)
• Label properties can now be given via a subelement label in the properties object given in create() ($43 & r2453)
• JXG.Curve has a new attribute called handdrawing (r2458 & r2459)
• Magnetized points, see the new point attributes attractor, attractorDistance, and snatchDistance for details (r2460-r2463)
• snapToGrid is now an attribute of JXG.Point instead of JXG.Board. This way, it can be decided for every single point to snap onto a grid and what grid ($46, r2463 & r2487). If snapSize* is less or equal zero the axis is used (if available (r2611)
• Highlighting can now be disabled with the element attribute highlight. Default value is true ($47 & r2476)
• The radius of an angle can now be a function ($50 & r2481)
• Preparations for polynomial arithmetics (r2484)
• Preparations for a file format (r2485, r2488, r2495, r2499 - r2502, r2507, r2509)
• Segments can have a fixed length now (r2492 - r2494)
• Catmull-Rom-splines (r2510, r2512 & r2528)
• Introducing themes (r2539, r2541 & r2545)
• Angle has a new method called Value() that returns the currently displayed angle (r2548)
• Set the zoom level of a board directly with JXG.Board.setZoom (r2563)
• Attributes cssClass & highlightCssClass for texts (r2564 - r2567)
• Method free() for JXG.Point and JXG.Text, to free a bound point/text (r2572 & 2612)
• New method def() for JXG to ease default parameter handling (r2617)
• JXG.indexOf() finds elements in an array (r2629)
• New attribute for JXG.Polygon hasInnerPoints changes the behaviour of JXG.Polygon.hasPoint(): If true, hasPoint returns true if the user points inside the polygon (r2651 & r2652)

Bug fixes

• Fixed freeBoard issue ($35 & r2365)
• Hide infobox on touchend (r2362)
• Updated reference card (r2363)
• Resizing the container now works with Canvas, too ($38 & r2368)
• Disabling a label via setProperty({withLabel: false}) and re-enabling it won't cause a second label to appear ($37 & r2370)
• A midpoint with complex parents could be misplaced (r2375)
• Prevent dragging of axis points (r2391)
• Fixed layer of the glider in a slider (r2397)
• Fixed width and height computation of texts (r2399)
• gradientSecondColor got lost during setProperty (r2415)
• Set property withLabel to true on an element without a label produced an error ($40 & r2416)
• Listen on the whole document for touchEnd events, not only on the board's container (r2420)
• Enable navigation controls on touch devices (r2464)
• The ids of the points used to generate a regular polygon can now be given in the attribute object ($48 & r2478)
• Dragged objects are now highlighted (r2490)
• Improved multitouch dragging of lines (r2497, r2498 & r2503)
• Traces are deleted as soon as the element's trace attribute is set to false (r2511)
• Sliders with snapWidth set to e.g. 1 not always returned an integer value (r2519 & r2520)
• Fixed an issue with major ticks with height < 0 ($55, r2517, r2518 & r2522) and improved ticks in general (r2523, r2524, r2525 & r2553)
• Fixed some bugs in Turtles ($56, r2526, r2527, r2529, r2533 & r2537)
• JXG.trim now deletes whitespaces, not 'w's (r2543)
• If a free point is converted to a glider with JXG.Point.makeGlider(), it is now located near its last position as a free point (r2544)
• JXG.Legend had no visProp (r2561)
• Constrained points were visible only after an update (r2584)
• Hide Polygon if at least one of the vertices is non-real ($59 & r2585)
• Fillcolor of a point was set to highlightStrokeColor on highlight (r2587)
• The z-Index of the board's div is now added to the z-Index for html text elements (r2598)
• Minor bug in GeometryElement fixed (r2602)
• Set infobox to fixed (r2603)
• Clear traces on object removal (r2610)
• Repaired JXG.Point.visit() (r2631)
• Fixed a bug in JXG.Polygon.remove() (r2634)
• Fixed highlighting using custom DOM events (r2637)
• Fixed a bug in JXG.addEvent() (r2638)
• Set grid dash from 2 to 0, because 2 slows down the iPad considerably (r2641)
• Fixed a bug in JXG.createGroup (r2653)
• Fixed a bug preventing the automatic labeling of Angles (r2655 & r2656)

0.92

Important Notes

• JXG.Math.Numerics.RamenDouglesPeucker has been renamed to JXG.Math.Numerics.RamerDouglasPeucker (r2317)
• JXG.Board.getRelativeMouseCoordinates() has been renamed to JXG.Board.getCoordsTopLeftCorner (r2327 & r2329)

New Features

Bug fixes

• Fixed restriction to max 34 Boards on a single HTML web page and raised it to 65535 (r2313)
• Line with undefined endpoint is fixed ($15 & r2322)

0.91

Important Notes

JXG.Point.visit()'s parameter repeat has been replaced by the new parameter options which can used to provide settings like a repeat value, a callback function or speeding effects. It is however still possible to provide repeat as a third parameter instead of an options object to support older mathlets ootb without the author having to make readjustments. This behaviour might be dropped in future releases, so please adjust your scripts accordingly.

New Features

• Zoom with mouse wheel (r2188 & r2272)
• Optional dot for right angles ($18 & r2197)
• Adjust the renderer size if the board is resized (r2207, r2208 & $21)
• Callback functions for animated point movement ($25, r2211 & r2214)
• Callback functions for visprop animation ($26 & r2222)
• Point movement animations got the new option "effect" ($5, r2279)
• User defined execution context for hooks ($29 & r2220)
• New Slider attribute 'precision': manages precision of slider value displayed in its label (r2230)
• Polygons can now be removed via board.removeObject() (r2240)
• Improved zooming (r2231, r2241, r2242 & r2243)
• Improved mouse and touch events and enabled dragging lines, circles and texts (r2251, r2253-r2254, r2256-r2264, r2266-r2271)
• Max number of iterations in JXG.Math.Numerics.fminbr can be adjusted with JXG.Math.Numerics.maxIterationsMinimize (r2283 & r2288)
• Max number of iterations in JXG.Math.Numerics.fzero can be adjusted with JXG.Math.Numerics.maxIterationsRoot (r2285)
• Implemented remove() for sliders ($31 & r2296)

Bug fixes

• Element copies from tracing sent to background ($13 & r2190)
• Traced intersections leave a copy at [0, 0] on initialization ($14 & r2191)
• General elements should not be put into the highest layer but into the lowest ($16 & r2192)
• Attribute 'withLabel' was missing in the docs (r2193)
• Suppress error message caused by empty path strings (r2194 & r2205)
• Draw segments correctly from the start (r2196)
• CanvasRenderer: Don't draw invisible points (r2196)
• Implement show/hideElement for JXG.Ticks (r2203 & $20)
• createCircumcircle does not return arrays anymore (r2204)
• Check if document.selection.empty is a function in Board.mouseDownListener (r2206)
• Perpendiculars can now be constructed as straight lines ($23 & r2213)
• Drag'n'Drop of elements bug on Android devices fixed ($27, r2215 & r2216)
• initial position of helper point in createPerpendiculer fixed ($24 & r2223)
• initial positions of axis labels fixed (r2232)
• harmonized default tick distance attributes and documented ticks (r2234 & r2235)
• fixed display of 0 with certain ticks distances (r2236 & r2237)
• fixed using HTML tables as datasource for charts (r2238)
• proper placement of axis labels ($1 & r2277)
• GeonextReader: straightLines (r2284)
• Adjusted Layers of Compositions: Polygons are now below lines (r2287)
• IntergeoReader & CinderellaReader: Compositions are working now (r2289 & r2290)