#!/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 20.329866948555495 57.503110106107336 -gcp 14706.0 0.0 21.700003932210443 57.42603548624448 -gcp 14706.0 18426.0 21.506587251503383 56.509423142031515 -gcp 0.0 18426.0 20.15744007243781 56.58268991284938 Viduseuropas_specialas_topografiskas_kartes_Krusi__6828_A1_L43_10_02.JPG Viduseuropas_specialas_topografiskas_kartes_Krusi__6828_A1_L43_10_02.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 -cutline "POLYGON((1540.25 1548.2490283176014, 1520 4329, 3515.5 4355.497501388118, 3541 1576.2490283176014, 1540.25 1548.2490283176014))" Viduseuropas_specialas_topografiskas_kartes_Krusi__6828_A1_L43_10_02.vrt Viduseuropas_specialas_topografiskas_kartes_Krusi__6828_A1_L43_10_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_Krusi__6828_A1_L43_10_02.cut.vrt Viduseuropas_specialas_topografiskas_kartes_Krusi__6828_A1_L43_10_02.xyz