[3d] Fix crash in terrain generator if DEM raster layer is missing

(cherry picked from commit 685806b)
qgis · Nov 6, 2018 · 1db7a29 · 1db7a29
1 parent bacbcf6
commit 1db7a29
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/3d/terrain/qgsdemterraingenerator.cpp b/src/3d/terrain/qgsdemterraingenerator.cpp
@@ -66,7 +66,10 @@ QgsRectangle QgsDemTerrainGenerator::extent() const
 float QgsDemTerrainGenerator::heightAt( double x, double y, const Qgs3DMapSettings &map ) const
 {
   Q_UNUSED( map );
-  return mHeightMapGenerator->heightAt( x, y );
+  if ( mHeightMapGenerator )
+    return mHeightMapGenerator->heightAt( x, y );
+  else
+    return 0;
 }
 
 void QgsDemTerrainGenerator::writeXml( QDomElement &elem ) const