Concentric Layout places the nodes on concentric circles.
Usage
As the demo below, you can deploy it in layout while instantiating Graph. it can also be used for Subgraph Layout. This algorithm will order the nodes according to the parameters first, then the node in the front of the order will be placed on the center of the concentric circles.
Type: Array Example: [ 0, 0 ] Default: The center of grpah Required: false Explanation: The center of the layout
preventOverlap
Type: Boolean Default: false Required: false Explanation: Switch to prevent the node overlappings. It should be used with nodeSize. Only if the nodeSize is assigned, the collide detection will take effect.
nodeSize
Type: Number Default: 30 Required: false Explanation: The size of the node(diameter). It will be used in collide dectection for preventing node overlappings.
minNodeSpacing
Type: Number Default: 10 Required: false Explanation: The min distance between rings.
sweep
Type: Number Default: undefined Required: false Explanation: How many radians should be between the first and last node (defaults to full circle). If it is undefined, 2 * Math.PI * (1 - 1 / |level.nodes|) will be used, where level.nodes is nodes set of each level, |level.nodes| is the number of nodes of the level.
equidistant
Type: Boolean Default: false Required: false Explanation: Whether levels have an equal radial distance between them, may cause bounding box overflow.
startAngle
Type: Number Default: 3 / 2 * Math.PI Required: false Explanation: Where nodes start in radians.
clockwise
Type: Boolean Default: false Required: false Explanation: Place the nodes in clockwise or not.
maxLevelDiff
Type: Number Default: undefined Required: false Explanation: The sum of concentric values in each level. If it is undefined, maxValue / 4 will take place, where maxValue is the max value of ordering properties. For example, if sortBy='degree', maxValue is the max degree value of all the nodes.
sortBy
Type: String Default: undefined Required: false Explanation: Order the nodes according to this parameter. It is the property's name of node. The node with higher value will be placed to the center. If it is undefined, the algorithm will order the nodes by their degree.
