The legacy centerAndZoom sets the wrong center

[milespetrov]

You can see the map pan/shift a bit when you run RV.getMap("fgpmap").centerAndZoom(RAMP.mapInstances[0].center.x, RAMP.mapInstances[0].center.y, 4326, RAMP.mapInstances[0].zoom); in the dev console.

Sounds like a precision issue somewhere in the code. The RAMP.mapInstances[0].center object seems precise enough {x: -57.84282243778783, y: 54.43906496234642}

[james-rae]

Interesting. The "jump" is far more severe if you're at a Canada-level scale then a city-level scale. Hmmmm

[james-rae]

Looks like it's the .center that is off.

[james-rae]

Need to dig more, but I believe this is a problem with how RAMP2 dealt with co-ordinates via the API.

Every API output is forced into lat/long projection. The .center call is deriving the center of the map extent. BUT it is using a projected extent, not the raw extent. Regular geometry can be re-projected seamlessly, but extents are special in that they need to have right-angle corners in their projection. Going from Lambert (cone shaped) to Lat/Long (sphere) involves some distortion & warping.

A possible fix is to re-route the .center method to interrogate the raw extent, get the center point in the map's projection, then re-project the point, and return that.