new Circle(dataopt, nullable)
    Circle.
    Parameters:
| Name | Type | Attributes | Description | 
|---|---|---|---|
| data | object | <optional> <nullable> | JSON data. | 
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Methods
(abstract) doFitTitleInside(node, size, textSize)
    Resize a node to fit its title inside.
    Parameters:
| Name | Type | Description | 
|---|---|---|
| node | ge.Node | Node data. | 
| size | ge.ContainerSize | Text container size. | 
| textSize | ge.TextSize | Text size calculator. | 
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(abstract) getPoint(node, angle) → {ge.Point}
    Return point at angle.
    Parameters:
| Name | Type | Description | 
|---|---|---|
| node | ge.Node | Node data. | 
| angle | ge.Angle | Angle. | 
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Returns:
- Type
- ge.Point
path(node) → {string}
    Return SVG path.
    Parameters:
| Name | Type | Description | 
|---|---|---|
| node | ge.Node | Node data. | 
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Returns:
    SVG path.
- Type
- string