Link Gaps not working

GoJS
1

Hi, great documentation, many thanks for the gazillion examples. I have a rather basic question, it seems I cant get the “link gap” (instead of crossing, make one link have a small gap in the intersection) working. I’ve already added “curve: go.Link.JumpGap” definition to all my Link templates, however it seems I am doing something wrong, so if anybody here can give me a hand, I’d appreciate it.

Screenshot:

Definitions:

    var template_relationshipLine = $go(go.Link, {
        routing: go.Link.AvoidsNodes,
        curve: go.Link.JumpGap,
        reshapable: true,
        deletable: false
    },

    $go(go.Shape), $go(go.TextBlock, new go.Binding("text", "role"), {
            font: "10px sans-serif",
            segmentOffset: new go.Point(-15, -15)
        }
    ),
    $go(go.TextBlock, new go.Binding("text", "multiplicity"), {
            segmentIndex: 0,
            segmentOffset: new go.Point(NaN, NaN),
            font: "10px sans-serif"
        }
    )
);


var template_specializationLine = $go(go.Link, {
        routing: go.Link.AvoidsNodes,
        curve: go.Link.JumpGap,
        reshapable: true,
        deletable: false
    },
    $go(go.Shape),
    $go(go.Shape, {
        geometryString: "m 8,16 b 90 180 0 -8 8", //"m 4,8 b 90 180 0 -4 4",
        fill: null,
        //scale: 2,
        segmentOrientation: go.Link.OrientAlong
    })
);
2

That’s odd – your code looks correct. When I try it by modifying the UML class sample, adding curve: go.Link.JumpGap to the link template, I get this:

Adding routing: go.Link.AvoidsNodes, reshapable: true, deletable: false and your half-circle label made no difference:

So I’m sorry, but I don’t know what the problem is. Is there some way for us to reproduce the problem?

3

Hi, all the code is in github (see link below). You just need to open index.html and move the entities around so they cross. The github site is: GitHub - dorphalsig/moodler: Javascript ERM Modeler, linkable with Moodle
Thanks a lot.

4

Oh, one last thing. The link templates are all in templates.js
template_relationshipLine (line 34)
template_specializationLine (line 56)
template_totalGeneralizationLine (line 72)
template_partialGeneralizationLine (line 92)
thx

5

You didn’t pay attention to the console output – there are warning messages about an ongoing transaction:

WARNING: In ToolManager.doMouseDown: UndoManager.transactionLevel is not zero

That’s because you’re missing a commitTransaction call in addGeneralizationSpecialization.

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