Increase the arrow head size

[Amila]

Hi,

I would like to draw an arrow at the end of each line. But my line width is around 5 (the default size of default line style when it’s not set). So that the arrow head at the end of line is not very clearly visible.  I should not include an arrow shaped point at the end of line and also I would like to keep width of the line on same size. (If increased the line width arrow head is starting to display)

Is there is a way to make arrow head little bit big?

Below is my code and screenshot.  

_trackShapeLayer.ZoomLevelSet.ZoomLevel01.DefaultLineStyle.CenterPen.EndCap = DrawingLineCap.ArrowAnchor;

Also could you provide me an example usage of DrawingLineCap.custom enum.

Thanks

Amila

 

[Gary2]

Amila, 



Thanks for your post, sorry you can't use custom enum, but there is a way to resolve this problem, you can write a linestyle and override the DrawCore method, get the endpoint at the beginning then call the base.DrawCore, draw a symbol you want after base.DrawCode. 



You can view this post to have some sample code. 

gis.thinkgeo.com/Support/Discussion...fault.aspx

Any more questions please feel free to let me know. 



Regards, 



Gary

[Amila]

Hi Gray, 
  
 Thanks for the sample. It helps to reach requirement.  
  
 Thanks 
 Amila

[Gary2]

Amila, 
  
 I’m glad it helped. 
  
 Gary

[Marc_Ferguson]

I am having the same issue. The link for sample code to make this work is invalid. Please post a new link or sample.
I am using ThinkGeo Desktop Edition version 10, Visual Studio 2017, and VB.Net.
Thank you.

Serena

[Ethan]

Hi Serena,

As below is the topic mentioned by Gary:

Putting images on top of lines

I have a LineStyle I created to display lines with images for endpoints. The issue I am having is that no matter what order I draw them, the images always appear beneath the line. Is there any way to force the images to appear on top of the line?  The code I am using is:     public class ImageEndpointLineStyle : LineStyle     {         private LineStyle _lineStyle;         private GeoImage _firstPointImage;         private GeoImage _lastPointImage;         public ImageEndpointLineStyle(Line…

Please let me know whether that’s helpful for your scenario.

Regards,

Don

[Marc_Ferguson]

Hi Don,
This does not help. It looks like the topic for Gary was regarding the level at which the symbol was drawn below the line.
My issue is that I want the arrow to be larger. Here is a sample of my code:
lnStyle = New LineStyle
lnStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.Red, 3, False)
lnStyle.CenterPen.EndCap = DrawingLineCap.ArrowAnchor
valueStyle.ValueItems.Add(New ValueItem(“XferRoute1”, lnStyle))

the arrow displays, but it is very small. I would like to make the arrow larger.

[Ethan]

Hi Marc,

If you modify the width of the line, the arrow size will get changed like this:

If you don’t want to modify the line size but only want to modify the arrow size, you should want to implement your custom linestyle, draw a custom arrow in the end of line, you can override the DrawCore function for that.

If you don’t know how to implement that, you can create a ticket about that, so our developer can help you on that.

Regards,

Don