Hmm, maybe that's the reason why there is separate class for ArrowedLine. Essentially both RTElement and RTEdge has method 'model:' (RTShapedObject>>model:) where you can put a string which is then used by RTLabelled. (You can actually pass any object, but then you will have to modify it to send it the proper message).
anyway, I modified your example: ==== | vista e1 e2 e3 e4 line edge1 edge2 | "Se crea un objeto tipo vista" vista := RTView new. "Definimo los elementos, que denominamos simplemente e1, e2, etc, con su color y su tamaño" e1 := (RTEllipse new color: (Color blue alpha: 0.4); size: 20) elementOn: 'first'. e2 := (RTEllipse new color: (Color red alpha: 0.4); size: 20) elementOn: 'second'. e3 := (RTEllipse new color: (Color yellow alpha: 0.4); size: 20) elementOn: 'third'. e4 := (RTEllipse new color: (Color green alpha: 0.4); size: 20) elementOn: 'fourth'. "Decimos que los elementos antes definidos se podrán arrastrar" vista add: e1; add: e2; add: e3; add: e4. vista elements do: [ :each | each @ RTDraggable @ RTLabelled ]. "Adicionamos los elementos a la vista" "Decimos qué propiedades va a tener la línea que los conecta los elementos" line := RTArrowedLine new color: Color red. line withOffsetIfMultiple. "Decimos de dónde a dónde van las líneas que unen los elementos en la vista" edge1 := (line edgeFrom: e1 to: e2). edge2 := (line edgeFrom: e3 to: e4) model: 'second label'. vista add: edge1. vista add: (line edgeFrom: e2 to: e1). vista add: (line edgeFrom: e1 to: e2). vista add: (line edgeFrom: e2 to: e2). vista add: edge2. edge1 @ (RTLabelled new text: 'edge label'). edge2 @ RTLabelled. "this uses the model of edge2" "Decimos que dispocisión van a tener los elementos en la vista. En este caso se van a disponer de manera circular" RTCircleLayout on: { e1 . e2 . e3 . e4 }. "Abrimos la vista" vista open ==== On Sun, Nov 23, 2014 at 1:43 AM, Peter Uhnák <i.uh...@gmail.com> wrote: > It seems there is an issue with the arrow head, I'll try to investigate it > > for now try running it without it > > =========================== > v := RTView new. > > e1 := (RTEllipse new size: 20) elementOn: 'hello'. > e2 := (RTEllipse new size: 20) elementOn: 'world'. > > e1 @ RTDraggable. > e2 @ RTDraggable. > > l := RTEdge from: e1 to: e2. > l + (RTLine new color: Color red). > "l + (RTSimpleArrowHead new color: Color red)." > > e2 translateBy: 60 @ 80. > v addAll: (Array with: e1 with: e2 with: l ). > > e1 @ RTLabelled. > e2 @ RTLabelled. > > "Note that the RTLabelled interaction has to be set after having added the > element in the view" > l @ (RTLabelled new text: 'lining up!'). > > v open > ========================= > > As far as documentation goes, it is still heavily work in progress, so > right now Agile Visualization is probably the best source (and of course > mailing list). > >