#!/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 435.0 1008.0 27.333333333333332 56.5 -gcp 12537.0 1035.0 27.5 56.5 -gcp 12498.0 11955.0 27.5 56.416666666666664 -gcp 387.0 11919.0 27.333333333333332 56.416666666666664 95-c.jpg 95-c.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"435.0 1008.0\n12537.0 1035.0\n12498.0 11955.0\n387.0 11919.0\" | \
  gdaltransform -tps -output_xy 95-c.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  95-c.vrt 95-c.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES 95-c.cut.vrt 95-c.xyz