#!/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 26.67803664779663 57.48694453165247 -gcp 10503.0 0.0 26.677548485755924 57.46023464893951 -gcp 10503.0 10605.0 26.628260416030884 57.46044238291139 -gcp 0.0 10605.0 26.628297966957096 57.486970483749836 Aluksne-1989-1186/Aluksne-1989-1186-186.jpg Aluksne-1989-1186-186.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1053.0 1050.0\n9465.0 1026.0\n9477.0 9492.0\n1068.0 9564.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-186.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-186.vrt Aluksne-1989-1186-186.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-186.cut.vrt Aluksne-1989-1186-186.xyz