How to rotate renderer icon/graphic dynamically with the map rotation?

Anonymous User

When setting a renderer on a feature layer, a PictureMarkerSymbol rotates with the map rotation.

There is an angle field on a PictureMarkerSymbol. If you set this then the icon/graphic will be displayed rotated on the map. I tried binding the angle property to the map.mapRotation property but the icon didn't rotate with the map.

Is there any way to alter the rotation of the graphic dynamically with the map? My intent is actually to keep the graphic unrotated on the screen regardless of the map rotation underneath it.

UniqueValueRenderer{

       attributeNames: ["Verified"]

        defaultSymbol: PictureMarkerSymbol { image: "image.png"; width: 40; height: 32; angle: (map.mapRotation * -1.00)}

         }

LucasDanzinger

I don't know what all of the code looks like for this, but it seems like it is "by design" for 10.2.x release of Runtime. The issue is probably that Symbols are value objects, so the binding will not work. Once you set a symbol on a Renderer or a Unique Value Info, it is set. If you then change the original symbol, or if the binding emits that the property updates, it will indeed update the symbol, but that symbol is a copy of the one that is actually applied to the renderer or unique value info.

So with that said, the workflow you need to do is every single time the map's rotation changes, update each symbol's rotation to be the same as the map's, then re-set all of the symbols to the renderer. Quite a lot of work for something so simple, but I believe this is how it will have to be done.

Our Quartz release will have symbols as references, so if you update the symbol (or use property binding in the case of QML), it will update the symbol, and the renderer will automatically update, as it holds a reference to the original symbol.

Hope this helps.

-Luke