First question: how can I make the arrows go to the border of the ellipse, instead of the center?
Attachpoint is your friend.
-=-=-=-=-=-=-=-=-=
| v e1 e2 l shape |
v := RTView new.
e1 := ((RTEllipse new size: 20) + RTLabel) elementOn: 'one'.
e2 := ((RTEllipse new size: 20) + RTLabel) elementOn: 'two'.
e1 @ RTDraggable.
e2 @ RTDraggable.
e2 translateTo: 60 @ 40.
shape := RTLine new color: Color red.
shape attachPoint: (RTShorterDistanceAttachPoint new).
l := shape edgeFrom: e1 to: e2.
v add: e1; add: e2; add: l.
-=-=-=-=-=-=-=-=-=
v := RTView new.
e1 := ((RTEllipse new size: 20) + RTLabel) elementOn: 'one'.
e2 := ((RTEllipse new size: 20) + RTLabel) elementOn: 'two'.
e1 @ RTDraggable.
e2 @ RTDraggable.
e2 translateTo: 60 @ 40.
shape := RTLine new color: Color red.
shape attachPoint: (RTShorterDistanceAttachPoint new).
l := shape edgeFrom: e1 to: e2.
v add: e1; add: e2; add: l.
-=-=-=-=-=-=-=-=-=
Second question: as a human I would draw each of the two arrows with a curve: one curving up and one curving down so that they (and their labels) do not overlap. Can I do something like this in Roassal? Because now readability is far from optimal.
We have no solution for now.
Probably we need a new shape, something like RTDistinctLine that gives a variation when necessary.
We can work on this, but not right now… You can also give a try if you wish.
Alexandre
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Johan Fabry - http://pleiad.cl/~jfabry
PLEIAD lab - Computer Science Department (DCC) - University of Chile
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Alexandre Bergel http://www.bergel.eu
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Alexandre Bergel http://www.bergel.eu
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