I played a bit with this code and I I understand that:
when I decrease the charge - elements move apart;
when I increase the strength - elements move closer to each other;
but I don’t understand why when I increase the length - the graph begins to curl.
Can you explain this to me please?
Best regards,
Natalia
On Nov 11, 2014, at 4:27 PM, Natalia Tymchuk
<natalia.tymchuk(a)unikernel.net> wrote:
Thank you.
Best regards,
Natalia
> On Nov 11, 2014, at 3:02 PM, Alexandre Bergel <alexandre.bergel(a)me.com
<mailto:alexandre.bergel@me.com>> wrote:
>
> As Nicolai said, you need to explicitly say that you want the edges to be considered
in the layout using #useInLayout.
>
> Additionally, you may want to play with the charge and length in the layout. Consider
the following example:
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> builder := RTGraphBuilder new.
>
> builder nodes shape: (RTEllipse new size: 20).
> builder edges
> connectTo: [ :c | c subclasses ];
> useInLayout;
> shape: (RTLine new color: Color gray).
>
> builder layout force
> charge: -300;
> length: 20.
>
> builder addAll: Boolean allSuperclasses, Boolean withAllSubclasses.
>
> builder build.
> builder view
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> We give a repulsion of -300 to each node (which is what you want since nodes have to
repulse each other), and you give a length of 20 pixel to each edge.
> You end up with something like:
> <Screen Shot 2014-11-11 at 11.01.43 AM.png>
>
> Cheers,
> Alexandre
>
>
> --
> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
> Alexandre Bergel
http://www.bergel.eu <http://www.bergel.eu/>
> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
>
>
>
>> On Nov 10, 2014, at 8:17 AM, Natalia Tymchuk <natalia.tymchuk(a)unikernel.net
<mailto:natalia.tymchuk@unikernel.net>> wrote:
>>
>> Hello.
>> I’m trying to use Force based layout to position some elements. I expected to get
the image like this.
>> <Screen Shot 2014-11-10 at 11.16.54.png>
>> Using this code
http://ws.stfx.eu/LACEUL5X6K1S
<http://ws.stfx.eu/LACEUL5X6K1S> I got something different and I don’t know why.
>> <Screen Shot 2014-11-10 at 12.01.11 PM.png>
>> It looks like all elements attract instead of repel each other. Does somebody
know why it is like that?
>>
>> Best regards,
>> Natalia
>>
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