Add possibility to shift origin of 3D map scenes

This introduces a new class QgsGeoTransform (derived from QTransform)
that keeps chunk's translation vector as a QgsVector3D (i.e. in double
coordinates) and if there is a shift of the origin, 3D map scene and
chunk entities react to it by adjusting the underlying QTransform.

python/3d/auto_additions/qgs3dmapsettings.py

@@ -1,6 +1,6 @@
 # The following has been generated automatically from src/3d/qgs3dmapsettings.h
 try:
-    Qgs3DMapSettings.__attribute_docs__ = {'settingsChanged': 'Emitted when one of the configuration settings has changed\n\n.. versionadded:: 3.24\n', 'backgroundColorChanged': 'Emitted when the background color has changed\n', 'selectionColorChanged': 'Emitted when the selection color has changed\n', 'layersChanged': 'Emitted when the list of map layers for 3d rendering has changed.\n\n.. seealso:: :py:func:`setLayers`\n\n.. seealso:: :py:func:`layers`\n', 'terrainGeneratorChanged': 'Emitted when the terrain generator has changed\n', 'terrainVerticalScaleChanged': 'Emitted when the vertical scale of the terrain has changed\n', 'mapTileResolutionChanged': 'Emitted when the map tile resoulution has changed\n', 'maxTerrainScreenErrorChanged': 'Emitted when the maximum terrain screen error has changed\n', 'maxTerrainGroundErrorChanged': 'Emitted when the maximum terrain ground error has changed\n', 'terrainElevationOffsetChanged': 'Emitted when the terrain elevation offset is changed\n\n.. versionadded:: 3.16\n', 'terrainShadingChanged': 'Emitted when terrain shading enabled flag or terrain shading material has changed\n\n.. versionadded:: 3.6\n', 'terrainMapThemeChanged': "Emitted when terrain's map theme has changed\n\n.. versionadded:: 3.6\n", 'renderersChanged': "Emitted when the list of map's extra renderers have been modified\n\n.. versionadded:: 3.10\n", 'showTerrainBoundingBoxesChanged': "Emitted when the flag whether terrain's bounding boxes are shown has changed\n", 'showTerrainTilesInfoChanged': "Emitted when the flag whether terrain's tile info is shown has changed\n", 'showCameraViewCenterChanged': "Emitted when the flag whether camera's view center is shown has changed\n\n.. versionadded:: 3.4\n", 'showCameraRotationCenterChanged': "Emitted when the flag whether camera's rotation center is shown has changed\n\n.. versionadded:: 3.24\n", 'showLightSourceOriginsChanged': 'Emitted when the flag whether light source origins are shown has changed.\n\n.. versionadded:: 3.15\n', 'showLabelsChanged': 'Emitted when the flag whether labels are displayed on terrain tiles has changed\n', 'stopUpdatesChanged': 'Emitted when the flag whether to keep updating scene has changed\n\n.. versionadded:: 3.42\n', 'eyeDomeLightingEnabledChanged': 'Emitted when the flag whether eye dome lighting is used has changed\n\n.. versionadded:: 3.18\n', 'eyeDomeLightingStrengthChanged': 'Emitted when the eye dome lighting strength has changed\n\n.. versionadded:: 3.18\n', 'eyeDomeLightingDistanceChanged': 'Emitted when the eye dome lighting distance has changed\n\n.. versionadded:: 3.18\n', 'debugShadowMapSettingsChanged': 'Emitted when shadow map debugging has changed\n\n.. versionadded:: 3.18\n', 'debugDepthMapSettingsChanged': 'Emitted when depth map debugging has changed\n\n.. versionadded:: 3.18\n', 'pointLightsChanged': 'Emitted when the list of point lights changes\n\n.. versionadded:: 3.6\n', 'lightSourcesChanged': 'Emitted when any of the light source settings in the map changes.\n\n.. versionadded:: 3.26\n', 'directionalLightsChanged': 'Emitted when the list of directional lights changes\n\n.. versionadded:: 3.16\n', 'fieldOfViewChanged': 'Emitted when the camera lens field of view changes\n\n.. versionadded:: 3.8\n', 'projectionTypeChanged': 'Emitted when the camera lens projection type changes\n\n.. versionadded:: 3.18\n', 'cameraNavigationModeChanged': 'Emitted when the camera navigation mode was changed\n\n.. versionadded:: 3.18\n', 'cameraMovementSpeedChanged': 'Emitted when the camera movement speed was changed\n\n.. versionadded:: 3.18\n', 'skyboxSettingsChanged': 'Emitted when skybox settings are changed\n\n.. versionadded:: 3.16\n', 'shadowSettingsChanged': 'Emitted when shadow rendering settings are changed\n\n.. versionadded:: 3.16\n', 'ambientOcclusionSettingsChanged': 'Emitted when ambient occlusion rendering settings are changed\n\n.. versionadded:: 3.28\n', 'fpsCounterEnabledChanged': 'Emitted when the FPS counter is enabled or disabled\n\n.. versionadded:: 3.18\n', 'viewFrustumVisualizationEnabledChanged': "Emitted when the camera's view frustum visualization on the main 2D map canvas is enabled or disabled\n\n.. versionadded:: 3.26\n", 'axisSettingsChanged': 'Emitted when 3d axis rendering settings are changed\n\n.. versionadded:: 3.26\n', 'debugOverlayEnabledChanged': 'Emitted when the debug overaly is enabled or disabled\n\n.. versionadded:: 3.26\n', 'extentChanged': "Emitted when the 3d view's 2d extent has changed\n\n.. seealso:: :py:func:`setExtent`\n\n.. versionadded:: 3.30\n", 'showExtentIn2DViewChanged': "Emitted when the parameter to display 3d view's extent in the 2D canvas has changed\n\n.. seealso:: :py:func:`setShowExtentIn2DView`\n\n.. versionadded:: 3.32\n", 'showDebugPanelChanged': 'Emitted when the Show debug panel checkbox changes value\n\n.. seealso:: :py:func:`setShowDebugPanel`\n\n.. versionadded:: 3.42\n'}
+    Qgs3DMapSettings.__attribute_docs__ = {'settingsChanged': 'Emitted when one of the configuration settings has changed\n\n.. versionadded:: 3.24\n', 'backgroundColorChanged': 'Emitted when the background color has changed\n', 'selectionColorChanged': 'Emitted when the selection color has changed\n', 'layersChanged': 'Emitted when the list of map layers for 3d rendering has changed.\n\n.. seealso:: :py:func:`setLayers`\n\n.. seealso:: :py:func:`layers`\n', 'terrainGeneratorChanged': 'Emitted when the terrain generator has changed\n', 'terrainVerticalScaleChanged': 'Emitted when the vertical scale of the terrain has changed\n', 'mapTileResolutionChanged': 'Emitted when the map tile resoulution has changed\n', 'maxTerrainScreenErrorChanged': 'Emitted when the maximum terrain screen error has changed\n', 'maxTerrainGroundErrorChanged': 'Emitted when the maximum terrain ground error has changed\n', 'terrainElevationOffsetChanged': 'Emitted when the terrain elevation offset is changed\n\n.. versionadded:: 3.16\n', 'terrainShadingChanged': 'Emitted when terrain shading enabled flag or terrain shading material has changed\n\n.. versionadded:: 3.6\n', 'terrainMapThemeChanged': "Emitted when terrain's map theme has changed\n\n.. versionadded:: 3.6\n", 'renderersChanged': "Emitted when the list of map's extra renderers have been modified\n\n.. versionadded:: 3.10\n", 'showTerrainBoundingBoxesChanged': "Emitted when the flag whether terrain's bounding boxes are shown has changed\n", 'showTerrainTilesInfoChanged': "Emitted when the flag whether terrain's tile info is shown has changed\n", 'showCameraViewCenterChanged': "Emitted when the flag whether camera's view center is shown has changed\n\n.. versionadded:: 3.4\n", 'showCameraRotationCenterChanged': "Emitted when the flag whether camera's rotation center is shown has changed\n\n.. versionadded:: 3.24\n", 'showLightSourceOriginsChanged': 'Emitted when the flag whether light source origins are shown has changed.\n\n.. versionadded:: 3.15\n', 'showLabelsChanged': 'Emitted when the flag whether labels are displayed on terrain tiles has changed\n', 'stopUpdatesChanged': 'Emitted when the flag whether to keep updating scene has changed\n\n.. versionadded:: 3.42\n', 'eyeDomeLightingEnabledChanged': 'Emitted when the flag whether eye dome lighting is used has changed\n\n.. versionadded:: 3.18\n', 'eyeDomeLightingStrengthChanged': 'Emitted when the eye dome lighting strength has changed\n\n.. versionadded:: 3.18\n', 'eyeDomeLightingDistanceChanged': 'Emitted when the eye dome lighting distance has changed\n\n.. versionadded:: 3.18\n', 'debugShadowMapSettingsChanged': 'Emitted when shadow map debugging has changed\n\n.. versionadded:: 3.18\n', 'debugDepthMapSettingsChanged': 'Emitted when depth map debugging has changed\n\n.. versionadded:: 3.18\n', 'pointLightsChanged': 'Emitted when the list of point lights changes\n\n.. versionadded:: 3.6\n', 'lightSourcesChanged': 'Emitted when any of the light source settings in the map changes.\n\n.. versionadded:: 3.26\n', 'directionalLightsChanged': 'Emitted when the list of directional lights changes\n\n.. versionadded:: 3.16\n', 'fieldOfViewChanged': 'Emitted when the camera lens field of view changes\n\n.. versionadded:: 3.8\n', 'projectionTypeChanged': 'Emitted when the camera lens projection type changes\n\n.. versionadded:: 3.18\n', 'cameraNavigationModeChanged': 'Emitted when the camera navigation mode was changed\n\n.. versionadded:: 3.18\n', 'cameraMovementSpeedChanged': 'Emitted when the camera movement speed was changed\n\n.. versionadded:: 3.18\n', 'skyboxSettingsChanged': 'Emitted when skybox settings are changed\n\n.. versionadded:: 3.16\n', 'shadowSettingsChanged': 'Emitted when shadow rendering settings are changed\n\n.. versionadded:: 3.16\n', 'ambientOcclusionSettingsChanged': 'Emitted when ambient occlusion rendering settings are changed\n\n.. versionadded:: 3.28\n', 'fpsCounterEnabledChanged': 'Emitted when the FPS counter is enabled or disabled\n\n.. versionadded:: 3.18\n', 'viewFrustumVisualizationEnabledChanged': "Emitted when the camera's view frustum visualization on the main 2D map canvas is enabled or disabled\n\n.. versionadded:: 3.26\n", 'axisSettingsChanged': 'Emitted when 3d axis rendering settings are changed\n\n.. versionadded:: 3.26\n', 'debugOverlayEnabledChanged': 'Emitted when the debug overaly is enabled or disabled\n\n.. versionadded:: 3.26\n', 'extentChanged': "Emitted when the 3d view's 2d extent has changed\n\n.. seealso:: :py:func:`setExtent`\n\n.. versionadded:: 3.30\n", 'showExtentIn2DViewChanged': "Emitted when the parameter to display 3d view's extent in the 2D canvas has changed\n\n.. seealso:: :py:func:`setShowExtentIn2DView`\n\n.. versionadded:: 3.32\n", 'showDebugPanelChanged': 'Emitted when the Show debug panel checkbox changes value\n\n.. seealso:: :py:func:`setShowDebugPanel`\n\n.. versionadded:: 3.42\n', 'originChanged': "Emitted when the world's origin point has been shifted\n\n.. seealso:: :py:func:`setOrigin`\n\n.. versionadded:: 3.42\n"}
     Qgs3DMapSettings.__signal_arguments__ = {'terrainElevationOffsetChanged': ['newElevation: float'], 'fpsCounterEnabledChanged': ['fpsCounterEnabled: bool'], 'debugOverlayEnabledChanged': ['debugOverlayEnabled: bool'], 'showDebugPanelChanged': ['shown: bool']}
 except NameError:
     pass

python/3d/auto_generated/qgs3dmapsettings.sip.in

@@ -1013,6 +1013,15 @@ Emitted when the Show debug panel checkbox changes value
 
 .. seealso:: :py:func:`setShowDebugPanel`
 
+.. versionadded:: 3.42
+%End
+
+    void originChanged();
+%Docstring
+Emitted when the world's origin point has been shifted
+
+.. seealso:: :py:func:`setOrigin`
+
 .. versionadded:: 3.42
 %End
 

python/3d/auto_generated/qgscameracontroller.sip.in

@@ -181,6 +181,13 @@ Rotates the camera on itself.
 Returns ``True`` if the camera controller will handle the specified key ``event``,
 preventing it from being instead handled by parents of the 3D window before
 the controller ever receives it.
+%End
+
+    void setOrigin( const QgsVector3D &origin );
+%Docstring
+Reacts to the shift of origin of the scene, updating camera pose and
+any other member variables so that the origin stays at the same position
+relative to other entities.
 %End
 
   public slots: