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 ? >> > >> >> >> > >
