set Cache directory for hgt files to user dir instead of cwd

documentation: http://katze.tfiu.de/projects/phyghtmap/phyghtmap.1.html

.gitignore

@@ -25,5 +25,4 @@ osmfilter_tempfile.*
 # mac/unix
 
 #windows
-/wahoomc/tooling_win/osmconvert_tempfile.*
-hgt/*
+/wahoomc/tooling_win/osmconvert_tempfile.*

wahoomc/osm_maps_functions.py

@@ -27,6 +27,7 @@
 from wahoomc.constants import LAND_POLYGONS_PATH
 from wahoomc.constants import VERSION
 from wahoomc.constants import OSMOSIS_WIN_FILE_PATH
+from wahoomc.constants import USER_DL_DIR
 
 from wahoomc.downloader import Downloader
 from wahoomc.geofabrik import CountryGeofabrik, XYGeofabrik
@@ -490,6 +491,8 @@ def generate_elevation(self, o_input_data):
             log.info('-' * 80)
             log.info('# Generate contour lines for each coordinate')
 
+            hgt_path = os.path.join(USER_DL_DIR, 'hgt')
+
             tile_count = 1
             for tile in self.o_osm_data.tiles:
                 out_file_elevation = os.path.join(
@@ -509,7 +512,7 @@ def generate_elevation(self, o_input_data):
                     cmd.extend(['-o', f'{out_file_elevation}', '-s 10', '-c 100,50', '--source=view1,view3,srtm3',
                                 '--jobs=8', '--viewfinder-mask=1', '--start-node-id=20000000000',
                                 '--max-nodes-per-tile=0', '--start-way-id=2000000000', '--write-timestamp',
-                                '--no-zero-contour'])
+                                '--no-zero-contour', '--hgtdir=' + hgt_path])
                     cmd.append('--earthexplorer-user=' + username)
                     cmd.append('--earthexplorer-password=' + password)