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@unikernel.net wrote:
Thank you.
Best regards, Natalia
On Nov 11, 2014, at 3:02 PM, Alexandre Bergel <alexandre.bergel@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@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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