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Efficiently Move Polylines

ScottBrady1

Hi,

I am aware that the MapPoint object has the MoveTo function that allows one to efficiently move points from one location to another without re-creating the object.

Is there a method or technique that facilitates moving polylines between two locations on each timer tick without incurring the overhead of creating new Polyline objects.

Kind Regards

Scott

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SomeGISGuy

I just modified my flight-tracker sample to also animate lines. It's handling around 8000 points, with about 2-300 updates/second. Animating the points at 60 frames per second + animating a line to each of those points didn't seem like an issue at all.

I'm curious to know what sort of problems you were hitting with this?

ScottBrady1

This is unfortunate news as we are reviewing your product in the hopes that in can sustain a large number of mappoints with interconnecting relationships between other points using polylines. Creating and destroying thousands of polylines per second is an expensive operation in terms of application performance and responsiveness.

SomeGISGuy

The move operation is a very special-case optimization at the GPU level and only works for points. It gets complicated really quickly for lines and polygons and a similar optimization isn't really possible. There's not really a way around generating a new line or polygon for these scenarios

ScottBrady1

Forgot to mention that its for 10.2.7

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