#!/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 26.67917132377625 57.59364331310857 -gcp 10485.0 0.0 26.676285266876224 57.56676455820626 -gcp 10485.0 10584.0 26.627072095870975 57.5683699031829 -gcp 0.0 10584.0 26.62918567657471 57.59483925243134 Aluksne-1989-1185/Aluksne-1989-1185-181.jpg Aluksne-1989-1185-181.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1014.0 1038.0\n1017.0 9558.0\n9450.0 9546.0\n9441.0 1017.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-181.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-181.vrt Aluksne-1989-1185-181.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-181.cut.vrt Aluksne-1989-1185-181.xyz