#!/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 24.59831218113832 57.93342789532788 -gcp 17541.0 0.0 26.25362883441144 57.78890028201616 -gcp 17541.0 15414.0 25.996673830189426 57.037036408255915 -gcp 0.0 15414.0 24.387602196016438 57.184203895534246 Viduseuropas_specialas_topografiskas_kartes__Cesis__6828_A1_L43_4_02.JPG Viduseuropas_specialas_topografiskas_kartes__Cesis__6828_A1_L43_4_02.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 -cutline "POLYGON((972 912, 948.25 3729.4997223764576, 4926 3770, 4947 960, 972 912))" Viduseuropas_specialas_topografiskas_kartes__Cesis__6828_A1_L43_4_02.vrt Viduseuropas_specialas_topografiskas_kartes__Cesis__6828_A1_L43_4_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__Cesis__6828_A1_L43_4_02.cut.vrt Viduseuropas_specialas_topografiskas_kartes__Cesis__6828_A1_L43_4_02.xyz