Represents one of the predefined, common node shapes.
These can be rendered using basic SVG elements like <circle>, <rect>, or <polygon>.
'none' draws no shape at all: whatever NodeStyle.html (or an icon, a picture or
a label) puts on the node is the node, and the node's collision radius and edge anchors
come from that content rather than from size. The node stays selectable and draggable
over its whole extent.
Represents one of the predefined, common node shapes. These can be rendered using basic SVG elements like
<circle>,<rect>, or<polygon>.'none'draws no shape at all: whatever NodeStyle.html (or an icon, a picture or a label) puts on the node is the node, and the node's collision radius and edge anchors come from that content rather than fromsize. The node stays selectable and draggable over its whole extent.