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2.2.8.7.1 Modifying PolyLines and Polygons

When a Polygon or a PolyLine is modified, open blue circle anchors show the position of its "nodes", these are selected with Left-Click and are shown as filled circles.

If no nodes are selected,

Notes

A selected Polygon or Polyline node can only be deleted if there are at least three nodes left. It can only be round or smooth if long as it isn't an end node of a Polyline.

Smoothed nodes implement a short Bezier curve that goes from halfway along the line of to the next node and which has a control arm that ends at the node. These are typically of most use to fine-tune a series of nodes that simulate a complex curve.

Rounded nodes start at a distance that is half the shorter of the lines from the last node and to the next node and has control arms that extend to the half-way point to the node. This produces an arc whose radius is determined by the distance of the closet node. By manipulating the nearest node (for example, by adding a point) the radius at the node can be controlled.