g6/CHANGELOG.md

# ChangeLog
#### 3.1.2 
* feat: default behavior supports configuration trigger mode
* feat: node combining supports configuration title
* fix: update demo state styles

#### 3.1.1
* fix: update node use custom config
* fix: update demo
* feat: default node implement getShapeStyle function

#### 3.1.0
* feat: support for rich layouts：random, radial, mds, circular, fruchterman, force, dagre
* feat: more flexible configuration for shape
* feat: build-in rich default nodes
* feat: cases that provide layout and default nodes

#### 3.0.7-beta.1
`2019-09-11`
* fix: zoom-canvas support IE and Firefox

#### 3.0.6
`2019-09-11`
* fix:  group data util function use module.exports
* feat: update @antv/hierarchy version

#### 3.0.5
`2019-09-10`
* feat: support add and remove group
* feat: support collapse and expand group
* feat: add graph api: collapseGroup and expandGroup

#### 3.0.5-beta.12
* feat: add rect group
* feat: add rect group demo
* feat: add chart node

---
#### 3.0.5-beta.10
* feat: add 5 chart node
* feat: collapse-expand tree support click and dblclick by trigger option
* fix: drag group bug fix

#### 3.0.5-beta.9
* feat: support render group
* feat: support drag group, collapse and expand group, drag node in/out group
* feat: add drag-group、collapse-expand-group and drag-node-with-group behavior
* feat: add drag-group and collapse-expand-group demo
* feat: add register list node demo

#### 3.0.5-beta.8
`2019-07-19`
* feat: add five demos
* refactor: update three behaviors

#### 2.2.5

`2018-12-20`

* feat: add saveimage limitRatio

#### 2.2.4

`2018-12-20`

* fix: bug fix

#### 2.2.3

`2018-12-10`

* fix: bug fix

#### 2.2.2

`2018-11-30`

* fix: tree remove guide will not getEdges.closes #521

#### 2.2.1

`2018-11-25`

* fix: Compatible with MOUSEWHEEL
* fix: fadeIn aniamtion
* fix: fix wheelZoom behaviour by removing the deprecated mousewheel event

#### 2.2.0

`2018-11-22`

* fix: Graph read zIndex 
* refactor: Animation

#### 2.1.5

`2018-10-26`

* fix: svg pixelRatio bug
* feat: add wheel event

#### 2.1.4

`2018-10-06`

* fix: custom math.sign to compatible with ie browser.Closes #516.
* fix: legend component from @antv/component
* feat: update svg minimap && fix svg dom event

#### 2.1.3

`2018-09-27`

* feat: add label rotate
* feat: if there is no items the graph box equal canvas size

#### 2.1.2

`2018-09-19`

* fix: dom getShape bug.Closes #472
* fix: template.maxSpanningForest bug

#### 2.1.1

`2018-09-17`

* fix: tool.highlightSubgraph calculate box bug
* fix: plugin.grid.Closes #479
* chore(dev): upgrade babel & torchjs

#### 2.1.0

`2018-09-03`

* feat: svg render
* feat: plugin.layout.forceAtlas2
* feat: plugin.tool.fisheye
* feat: plugin.tool.textDisplay
* feat: plugin.tool.grid
* feat: plugin.template.tableSankey
* feat: plugin.edge.polyline

#### 2.0.5

`2018-07-12`

* improve: add g6 arrow

#### 2.0.4

`2018-07-12`

* feat: layout export group.Closes #355
* feat(plugin): add tool.tooltip. Closes #360.
* style: change the calling way of forceAtlas2 on template.maxSpanningForest
* fix: origin tree data collapsed is true tree edge visible bug.Closes #357
* fix: remove the forceAtlas.js in template.maxSpanningForest, use forceAtlas from layout.forceAtlas2
* fix: add demos: plugin-fisheye, plugin-forceAtlas2, gallery-graphanalyzer
* fix: add demos: plugin-forceAtlas2, plugin-fisheye

#### 2.0.3

`2018-06-29`

* feat: update g to 3.0.x. Closes #346
* fix: group should use rect intersect box. Close #297
* fix(plugin): dagre edge controlpoints remove start point and end point
* style: remove some annotations
* chore: update torchjs && improve demo name

#### 2.0.2

`2018-06-13`

* chore(plugin): require g6 by src/index
* chore(dev test): remove useless test script
* fix(plugin) minimap destroy Closes #308
* fix(saveImage) saveImage bug
* fix(event): fix dom coord. Closes #305

#### 2.0.1

`2018-06-11`

* fix:      reDraw edge after layout
* feat:     add quadraticCurve config cpd
* feat:     add beforelayout && afterlayout event
* chore:    .travis.yml add add Node.js
* chore:    .travis.yml cache node_modules

#### 2.0.0

`2018-06-06`

* refactor: refactor architecture && code

#### 1.2.1

`2018-03-15`

* feat:    layout interface

#### 1.2.0

`2018-01-15`

* fix:      nodeActivedBoxStyle spelling error
* fix:      error when deleting a circle
* fix:      trigger dragstart while right clicking and moveing
* feat:    Unify Layout mechanism
* feat:    Plugin mechanism
* feat:    Data filter mechanism
* feat:    Activated interface
* feat:    Action wheelZoomAutoLabel
* feat:    configuration of graph -- preciseAnchor
* remove:   Global.preciseAnchor
* remove:   Layout.Flow、Layout.Force
* improve:  html container strategy

#### 1.1.6

`2017-10-15`

* fix:      pack problem in layout algorithm

#### 1.1.5

`2017-09-15`

* fix:      dragCanvas is effective while mousemove, prevent it from affecting click events
* fix:      unactivate pick-up in activeRectBox of node

#### 1.1.4

`2017-08-15`

* feat:     graph.invertPoint()
* feat:     third configuration of anchor to support style setting, float style, connection
* feat:     item.getGroup()
* feat:     events -- afteritemrender、itemremove、itemadd
* feat:     behaviourSignal
* improve:  mouseWheel is affective after focusing the canvas

#### 1.1.3

`2017-08-8`

* feat:     Graph configuration -- useNodeSortGroup
* feat:     Global.nodeDelegationStyle, Global.edgeDelegationStyle, isolate the delegation of edge and node on graph
* fix:      itemremove is triggered before destroying a graph

#### 1.1.2

`2017-08-01`

* feat:     dragBlankX dragBlankY

#### 1.1.1

`2017-07-18`

* improve:  dragNode protect mechanism

#### 1.1.0

`2017-07-05`

* feat:     HTML node
* feat:     mapper support callback function
* feat:     Graph interfaces -- updateMatrix、changeSize、showAnchor、hideAnchor、updataNodesPosition
* feat:     tool functions -- Util.isNode()、Util.isEdge()
* feat:     Shape polyLineFlow
* feat:     dragEdgeEndHideAnchor、dragNodeEndHideAnchor、hoverAnchorSetActived、hoverNodeShowAnchor

#### 1.0.7

`2017-06-21`

* fix:       draw one more time in 16ms after first draw
* improve:  add zoom by scroll in edit mode

#### 1.0.6

`2017-06-15`

* fix:      compatible in chrome in windows. triggering mousemove after first click leads to wrong click event. 
* feat:     support fix size graphics
* feat:     analysis mode
* feat:     updateNodesPositon update a set of nodes' position
* improve:  change useAnchor to be a configuration of edge

#### 1.0.5

`2017-06-01`

* feat:     downloadImage support saving with name
* feat:     automatically detect tooltip padding
* improve:  stop the action while mouse dragging out of the canvas

#### 1.0.4

`2017-05-20`

* fix:      tree changeData Bug
* fix:      when getAnchorPoints returns auto, anchor is the intersection of edge and the bounding box
* fix:      generate node label according to isNull
* feat:     viewport parameters -- tl、tc、tr、rc、br、bc、bl、lc、cc
* improve:  reduce tolerance to improve the accuracy of interception
* improve:  improve tooltip event mechanisom to enhance performance

#### 1.0.3

`2017-05-10`

* feat:     graph.guide().link()

#### 1.0.2

`2017-05-10`

* fix:      Object.values => Util.getObjectValues
* fix:      when anchorPoints is auto, there is only anchorpoint on edge, it will also return the intersection
* fix:      tree update interface Bug
* improve:  represent positions information by group.transfrom()

#### 1.0.1

`2017-04-22`

* fix:      copy and paste bug
* feat:    draw once in 16ms
* feat:     itemactived itemunactived itemhover itemupdate itemmouseenter itemmouseleave
* improve: be clear the status of graphics before activating graphics by frame selection
* improve:  dragAddEdge, linkable to anchor
* improve:  performance of animation

#### 1.0.0

`2017-03-31`

* feat:     fitView configurations
* feat:     graph.zoom()
* feat:     wheelZoomHideEdges hide the edges while zooming by wheel
* feat:     dragHideEdges hide the edge while dragging edge
* feat:     graph.filterBehaviour()
* feat:     graph.addBehaviour()
* feat:     graph.changeLayout()
* feat:     read interface, re-define save interface
* feat:     graph.snapshot, graph.downloadImage
* feat:     graph.autoSize()
* feat:     graph.focusPoint()
* feat:     tree graph、net graph
* feat:     interaction mechanism -- event => action => mode
* feat:     animation mechanism
* feat:     itemmouseleave、itemmouseenter
* remove:   graph.refresh()
* remove:   graph.changeNodes()
* remove:   graph attributes -- zoomable、dragable、resizeable、selectable
* improve:  anchor mechanism
* improve:  hide G6.GraphUtil functions, unified in G6.Util
* improve:  replace g-canvas-core to g-canvas to improve performance
* improve:  Global.nodeAcitveBoxStyle instead of Global.nodeBoxStyle
* improve:  afterAdd => afteradd
* improve:  G6.Graph to be an abstract class

#### 0.2.3

`2017-03-2`

* fix:      dragable for controlling dragable under default mode
* feat:     graph.converPoint()
* feat:     graph.autoSize()
* feat:     rightmousedown leftmousedown wheeldown
* improve: use try catch to prevent the length of getPoint of path equals zero

#### 0.2.2

`2017-02-24`

* fix:      add px totooltip css padding
* fix:      tooltip mapping error
* fix:      accurate intersection
* fix:      zoom error on double accuracy screen
* fix:      buonding box extended from keyShape
* feat:     afterAdd 
* feat:     dblclick
* improve:   width、height default null
* improve:  remove hovershape on node
* improve:  tooltip defense mechanism

#### 0.2.1

`2017-02-14`

* fix:      rollback when add node
* fix:      apply tranformation of parent container while calculating bounding box
* feat:     waterPath
* feat:     tooltip tip information
* feat:     mouseover 
* feat:     multiSelectable, default false
* feat:     set forceFit to true while width is undefined
* improve:  zoomable、dragable、resizeable、selectable default true

#### 0.2.0

`2017-02-07`

* feat:     accurate anchor mechanism
* feat:     GraphUtil.getEllipsePath
* feat:     GraphUtil.pointsToPolygon
* feat:     GraphUtil.pointsToBezier
* feat:     GraphUtil.snapPreciseAnchor
* feat:     GraphUtil.arrowTo
* feat:     GraphUtil.drawEdge
* feat:     bezierQuadratic
* feat:     node.show
* feat:     node.hide
* feat:     node.getLinkNodes
* feat:     node.getUnLinkNodes
* feat:     node.getRelativeItems
* feat:     node.getUnRelativeItems
* feat:     edge.show
* feat:     edge.hide
* feat:     Shape afterDraw
* improve:  the controlling point positions of Bezier Curve改进贝塞尔曲线控制点位置
* improve:  grpah.delete => graph.del
* improve:  error when adding id

#### 0.1.4

`2017-01-17`

* fix:      delegator of dragging a node is the center of bbox
* fix:      use cardinality sort for all the sorting algorithm
* fix:      random id on edges
* feat:     level sort on edges, edge labels on the top level
* feat:     while extending shape is undefined when register an edge, find the extending shaoe automatically

#### 0.1.3

`2017-01-15`

* fix:      judge the existance of the object while operating assistGrid
* feat:     rollback judgement, default unactivate
* feat:     style mapping channel
* feat:     return the intersections while getAnchorPoints is null or returns false
* feat:     bezierHorizontal、bezierVertical
* improve:   'eventEnd' 

#### 0.1.2

`2017-01-12`

* fix:      judge the configuration before updating grid
* fix:      the size of graphContainer in unsetable, setted by inner canvas
* fix:      will not add an edge if the target or source is undefined
* fix:      changeSize() maximum tolerance for error
* feat:     graph.get('el')  to get canvas DOM
* feat:     event exposures shape

#### 0.1.1

`2017-01-09`

* feat:     entrance of graph is G6.Graph

#### 0.1.0

`2017-01-07`

* feat:     color calculation library
* feat:     hot key
* feat:     updo, redo
* feat:     copy, paste
* feat:     reset zoom, auto zoom
* feat:     tree graph, linear graph, sankey graph, flow laout
* feat:     flow chart package
* feat:     timing diagram package
* feat:     single selection, frame selection
* feat:     node deformation
* feat:     edge deformation
* feat:     drag node and edge
* feat:     link edge and node
* feat:     drag canvas
* feat:     zoom
* feat:     select mode
* feat:     integrate g-graph