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V12.1 - Zoom In/Out Results in Flash

ThinkGeo Team,

I’ve noticed that when either a ZoomIn or ZoomOut is performed a one-time flash of the map appears.

For example, on a ZoomOut the existing imaged is reduced, the reduced image is cleared, and then the new rendering takes place. The fact that the reduced image is cleared is what causes the ‘flash’.

This ‘flash’ does not appear under V10.6. Under V10.6 the first thing that happens is the existing image is reduced and then the new rendering takes place.

It would be nice to see this behave in the same fashion as V10.6.

Regards,
Dennis

Thanks Dennis,
We noticed this issue before. We recommend use Map.BackgroundOverlay to set the background of the map. This will make the zoom in/out process more smooth.

Demo.zip (1.5 MB)

Thanks

Frank

Frank,

How is the below line of code a solution?

map.BackgroundOverlay.BackgroundBrush = GeoBrushes.AliceBlue

I added this line to my application and now the map background is always AliceBlue and the map still ‘flashes’ during a zoom.

This should behave the same way as V10.6.

Dennis

Thanks Dennis,
As talked with the development team. This because the reduced image is cleared earlier than it should be. We need clear the old image after all the new requested image take over the spot. We are looking into more detail.

Thanks

Frank