#!/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 26.588239459760832 57.478305519899614 -gcp 11367.0 0.0 26.58321677522949 57.44923842537589 -gcp 11367.0 11334.0 26.52939437320726 57.451755000802315 -gcp 0.0 11334.0 26.53430799865723 57.480754282106645 Aluksne-1989-1186/Aluksne-1989-1186-205.jpg Aluksne-1989-1186-205.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1104.0 1713.0\n9558.0 1029.0\n10215.0 9435.0\n1752.0 10107.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-205.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-205.vrt Aluksne-1989-1186-205.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-205.cut.vrt Aluksne-1989-1186-205.xyz