Yes, you can use SVG path as a shape for an element. What you chose really depends on your objective. If you want to draw nodes (elements) and connect them with edges (lines), I guess, the preferred API is Roassal2.
On Sep 12, 2014, at 7:02 PM, kilon alios <[email protected]> wrote: > ah thank you very much, thats exactly what I was looking for. I will study > Trachel too. I also found that I can do something similar using a SVG path > with Roassal. > > On Sat, Sep 13, 2014 at 12:58 AM, Juraj Kubelka <[email protected]> > wrote: > I think the intention of Roassal lines is to be connected with elements. If > you want only draw lines without any connection to elements, use directly > Trachel. I guess > > -=-=-=- > | v line | > v := RTView new. > line := TRLineShape new from: 0@0 to: 100@100 color: Color blue. > v canvas addShape: line. > ^ v open > -=-=-=- > > Cheers, > Juraj > > On Sep 12, 2014, at 6:53 PM, kilon alios <[email protected]> wrote: > >> well thats not an one liner and you still connect elements with it. I just >> wanted to pass coordinates to a line and draw it. So I would prefer it if I >> could pass points instead of elements. >> >> On Sat, Sep 13, 2014 at 12:38 AM, Juraj Kubelka <[email protected]> >> wrote: >> OK, then you can write: >> >> -=-=-=- >> | v elements edge | >> v := RTView new. >> elements := (RTEllipse new >> size: #yourself; >> color: Color red) + RTLabel elementsOn: #(10 20). >> edge := RTDirectedLine new >> color: Color blue; >> edgeFrom: elements first to: elements second. >> v >> addAll: elements; >> add: edge. >> RTGridLayout on: elements. >> elements @ RTDraggable. >> ^ v open >> -=-=- >> >> Cheers, >> Juraj >> >> On Sep 12, 2014, at 6:30 PM, kilon alios <[email protected]> wrote: >> >>> yes i know about the example of a line connecting with other shapes. I >>> wanted just a simple line by itself starting from one point and ending to >>> another in a single line of code. >>> >>> On Sat, Sep 13, 2014 at 12:26 AM, Juraj Kubelka <[email protected]> >>> wrote: >>> I have checked RTDirectedLine and it is not supposed to use the way you >>> want. Basically RTEdge is the object you want to manipulate with. >>> >>> I do not know what is the objective of your example. But there is way how >>> you could write it. >>> >>> -=-=- >>> | v elements models | >>> models := (10 to: 60 by: 1). >>> v := RTView new. >>> elements := (RTEllipse new size: #yourself; color: Color red) + RTLabel >>> elementsOn: models. >>> v addAll: elements. >>> RTEdge buildEdgesFromObjects: models from: #yourself to: [ :i | i // 2 ] >>> inView: v. >>> RTGridLayout on: elements. >>> elements @ RTDraggable. >>> v @ RTDraggableView. >>> v canvas color: Color black. >>> v open. >>> -=-=- >>> >>> Cheers, >>> Juraj >>> >>> On Sep 12, 2014, at 5:03 PM, kilon alios <[email protected]> wrote: >>> >>> > Ok here comes the first question >>> > >>> > how I change the background color of RTView ? >>> > >>> > also >>> > >>> > when I do this >>> > >>> > v := RTView new. >>> > shape := RTEllipse new size: 20; color: Color red. shape := shape + >>> > RTLabel. >>> > es := shape elementOn:'hello'. v add: es. >>> > line := RTDirectedLine new pointsFrom: 20@20 To: 30@30. >>> > es2 := line element.v add: es2. >>> > es @ RTDraggable. >>> > v @ RTDraggableView . >>> > v open. >>> > >>> > I am getting an error >>> > >>> > MNU Array >> element >>> > >>> > why ? >>> > >>> >>> >>> >> >> > >
