I had some passing thoughts about Arrow hierarchy
along the lines of... (from memory a while ago...)
* ROArrow is normally associated with a single ROLine between two points, and is oriented
to the direction of that line based on the line end points.
* ROOrthoVerticalLineShape & ROOrthoHorizontalLineShape were introduced, made up of
three segments, but ROArrow looked skewed since it was still drawn relative to the two end
points.
* ROHorizontalArrow and ROVerticalArrow were added make nice arrows for the Ortho-Lines,
however over time I started thinking these might be eliminated it ROArrow could be drawn
relative to the end-point of each end-segment, rather than the end points of the overall
line. ...but I hadn't had a chance to look into that further.
Yes, you're right. ROHorizontalArrow and ROVerticalArrow should probably be eliminated
if edges are better handled.
Alexandre
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Alexandre Bergel
http://www.bergel.eu
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