Q&A - Question

Allocator on but only for the current layer

Question
ScoL asked on September 01, 2020, keyword: Developer Kernel
We have a problem with symbol labels not showing at certain zoom levels because of the density of geos beneath them. We want to always see the symbol label no matter how busy the map is below it. But if there are multiple symbols, we still want the allocator to prevent overlapping labels.

So we want the allocator on for the current layer, but we want the label allocator to act like it is off as compared to any other layers on the map.

Is there a way or setting to do this?
Thanks.
Answers
Tomasz Kosinski (TatukGIS) replied September 01, 2020

Hi,

There is no direct way to achive this other then writing private allocator code.

Maybe this will help a bit:

  • Add your layer as a first one (if it is not possible due torendering logic, add it twice - first one only for lableing purposes
  • Call Viewel.LabelsReg.Reset after drawing such layer

Pseodo code:
 

mylayer.PantLayerEvent = myPaintLayer ;

...

void myPaintLayer( _sender, _layer )
{
   _layer.Draw;
   _layer.Viewer.LabelsReg.Reset() ;
}

 

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