- Deprecate global geographic crs strings, these should not be used
- Move some global constants to Qgis, and monkey patch for
API compatibility
- Deprecate global qgsVsiPrefix. Use QgsGdalUtils::vsiPrefixForPath()
instead
Always calculates the scale at the equator, regardless of the
actual visible map extent.
This method can be used to provide a consistent, static scale for
maps in geographic reference systems, regardless of the latitudes
actually visible in the map (permitting consistent appearance of
these maps when rendering relies on scale based visibility or
calculations). Otherwise a project in eg EPSG:4326 which uses
scale based visibility of layers and symbols will see layers
and features "randomly" disappear as the map is panned, even
though the user has not zoomed in or out of the map.
This method is only applicable when calculating scales with a
degree based reference system.
This is a new navigation mode for QgsCameraController which is meant to work
just like the terrain-based navigation mode, but for 3D scenes with globe.
Initially, the new navigation mode can handle:
- zooming in/out with mouse wheel
- orbit around globe when dragging with left mouse button pressed
- left/right/up/down keys to orbit around globe
- shift + left/right keys to change heading angle
- shift + up/down keys to change pitch angle
- page up/page down keys to increase/decrease elevation
For camera pose, we use QgsCameraPose as for "flat" scenes, but the QCamera
is positioned/rotated slightly differently - the main change is that in case
of globe, we use ECEF coordinates of the camera pose's center point, convert
them to lat/lon coordinates in order to set up initial rotation of the camera
so that it is perpendicular to the tangent plane at the given ECEF coordinate.
This commit contains some changes created during rebasing onto current master, however they are insifignant and should be ignored, as they will match the changes already in master.
