Class DimensionLine

Calculate a offset length

Place SVG arrow on position and rotation. Tip of the arrow is pivot

Generate a line segment in SVG (with SVG coords)

bind parameter to this dimension line and make it interactive

Get rotation in SVG coordinate system (so mirror y!)

Link to Shape so we can export DimensionLine with the shapes

Middle Point of this DimensionLine

Set static value

Output to data (to be send from Webworker to main app)

Make a Line Edge out this DimensionLine

Generate SVG for this dimension line if 3D the Dimension Line is projected to XY plane NOTE: we need to transform from Archiyou coordinate system to the SVG one (flip y)

Type of Annotation, reimplemented in extended classes

Update when linked Shape is updated

Update position after linked Shape has moved !!!! IMPORTANT !!!! Improve this method