ProjectOperator removes zValues of geometries

Question

At version 4.34, using projectOperator on geometries with z values fixes all its z values to 0!

Anyone has a workaround for this ?

ChristopheSuter · Answer

Found some strange way to correct the problem, maybe it can help. I am using a polylineGeometry returned by the sketchViewModel with :

defaultCreateOptions: {hasZ: true,mode: 'click'},in a 2d mapview. Then i use this geometry (that is in EPSG:2056, and has all of its z values to 0 that seems logic) to query elevation on Esri's elevation service (that is in EPSG:3857), so i use the projectOperator to reproject my geometry and then query Elevation on esri's elevationLayer. Everything ok, elevation z fixed and x/y in EPSG:3857.
Then I have to reconvert it to EPSG:2056 -> sets all the z to 0.
So I modified the sketchViewModel property (removed hasZ):

defaultCreateOptions: {mode: 'click'},
that means that now when querying the elevationLayer the geometry has no z value it works ... any caching that could cause this ?

AndyGup · Answer

@ChristopheSutergotcha. How are your non-new instance geometries being created when they have the z-problem?

If converting them to JSON is correcting the problem then it's possible there is some sort of issue with the non-JSON geometry instances. If you continue to have issues, or run into convert/revert performance issues, then I'd encourage you to open a support ticket so we can take a deeper look.

ChristopheSuter · Answer

Yes but it does not help, since it works correctly: https://codepen.io/christophesuter/pen/WbxVEvq since creating the geometry from its json solves it. Difficult for us to see why it works with a new instance of the geometry
I have adapted my projection method like this .. but it is still a workaround i think

export function project(geometry, spatialReference) {if (!geometry) {return geometry;}
if (Array.isArray(geometry)) {geometry = geometry.map((currentGeometry) =>geometryJsonUtils.fromJSON(currentGeometry.toJSON()));return projectOperator.executeMany(geometry, spatialReference);}
geometry = geometryJsonUtils.fromJSON(geometry.toJSON());return projectOperator.execute(geometry, spatialReference);}If i can inspect more properties just tell me ... 
Christophe