GeodeticPivot: mapGeodeticToFlat wrong pos.z

[sergej.vsemogucshij]

Hi

I created big GlobalTerrain by LandscapeTool:

And used only Imagery input raster data

using GeodeticPivot::mapGeodeticToFlat(Vec3(59.70366, 30.37401, 0.0)) i have got (-13345.158286 -9610.064772 0.000291)

but actually (visually, this position must be on terrain with z = 7)

And for any geo point GeodeticPivot::mapGeodeticToFlat returns z ~= 0. but GlobalTerrain has height +-1000(z) on corners

How properly use GeodeticPivot? how to get correct 3D position on Global Terrain by geo coordinates?

 

[maxi]

Hi, Sergej,

 

Geodetic pivot operates with 3 coordinate systems:

- Geodetic position (lat / lon / alt)

- Flat position: local position in a flat (not curved) mode

- Ellipsoid position: local position in a curved mode

+ WorldFlat / WorldEllipsoid (world positions)

 

And if you have curved terrain, you need ellipsoid position. To get ellipsoid from geodetic you can use this api:

- mapGeodeticToFlat + mapFlatToEllipsoid

- toWorld

[sergej.vsemogucshij]

@maxi thank you very much!