Free Form Links

GoDiagram (6 and previous)
1

I am trying to create and arrow to point to various parts of my diagram, as someone is working with it. I thought I could use Links to do this, but I am finding that links want to do some weird things, and I don’t see a way to use a link to “point” to a link (like I am doing with nodes).

Below is a picture of a link “arrow” pointing to a node. I need to be able to do a similar thing with links. Or to be able to have just a free form link or arrow to do the same.

Any ideas?

BTW, any ideas on how to get the arrow completely green and not the black tip?

2

GoLinks are GoStrokes that require a GoPort on each end. You could use the Simpler GoStroke class to get what you want without what I think you see as the “weird things”.

The arrowhead is filled with the Brush fill. You need to set the brush color too.
3

How would you do the positioning? By just setting the bounds?

4

something like this…

GoStroke s3 = new GoStroke();
s3.AddPoint(200, 70);
s3.AddPoint(400, 70);
s3.ToArrow = true;
doc.Add(s3);

strokes are made up of Points. set the 2 end points and add an arrow head (and set the color and pen width too).
If you run Demo1, you'll see another arrow/pointer object that is yellow-green on the right hand side of the display. That's an Demo1.BlockArrow object, defined in BlockArrow.cs. It's derived from GoPolygon.
5

actually, try this:

GoStroke s3 = new GoStroke();
s3.AddPoint(210, 70);
s3.AddPoint(400, 50);
s3.ToArrow = true;
Pen p = new Pen(Color.Red, 10);
s3.Pen = p;
s3.ToArrowLength = 20;
s3.ToArrowShaftLength = 20;
s3.ToArrowWidth = 20;
s3.BrushColor = Color.Red;
doc.Add(s3);
6

So what do the points represent in the stroke? Top/Left? Bottom/Right? How does that affect PenWidth?

7

The two points are End Points of the stroke. No relationship to pen width.