#!/bin/bash

GDAL_TILE_PROCESSES=16
GDAL_TILE_ZOOMS=8-14
GDAL_SAMPLING_WARP=cubic
GDAL_SAMPLING_TILE=antialias

# Create virtual dataset with coordinates
gdal_translate -of VRT -a_srs EPSG:4326 -outsize 300% 300% -gcp 0.0 0.0 22.36327362177651 58.12613041971591 -gcp 17364.0 0.0 24.004911991524466 58.01040597540118 -gcp 17364.0 15414.0 23.780500051520743 57.24942364750902 -gcp 0.0 15414.0 22.188548317643317 57.3738644911775 Viduseuropas_specialas_topografiskas_kartes__Gipka__6828_A1_L43_2_02.JPG Viduseuropas_specialas_topografiskas_kartes__Gipka__6828_A1_L43_2_02.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 -cutline "POLYGON((923 1008, 909.75 3797.25, 4929 3831, 4937 1035, 923 1008))" Viduseuropas_specialas_topografiskas_kartes__Gipka__6828_A1_L43_2_02.vrt Viduseuropas_specialas_topografiskas_kartes__Gipka__6828_A1_L43_2_02.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Viduseuropas_specialas_topografiskas_kartes__Gipka__6828_A1_L43_2_02.cut.vrt Viduseuropas_specialas_topografiskas_kartes__Gipka__6828_A1_L43_2_02.xyz