#!/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 840.75 1426.58356545961 27 56.25 -gcp 13708.5 1391.4338440111421 27.5 56.25 -gcp 13792.5 12917.335236768802 27.5 56 -gcp 854.25 12972.908356545962 27 56 96-Pusa_1932.jpg 96-Pusa_1932.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"840.75 1426.58356545961\n13708.5 1391.4338440111421\n13792.5 12917.335236768802\n854.25 12972.908356545962\" | \
  gdaltransform -tps -output_xy 96-Pusa_1932.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  96-Pusa_1932.vrt 96-Pusa_1932.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES 96-Pusa_1932.cut.vrt 96-Pusa_1932.xyz