#!/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 2304.0 3063.0 24.337216666666666 56.75 -gcp 23865.0 3186.0 24.837216666666666 56.75 -gcp 23898.0 22848.0 24.837216666666666 56.5 -gcp 2184.0 22731.0 24.337216666666666 56.5 ferro/P15_Neugut_1921_LoC_G6520_s100_.P6.jpg P15_Neugut_1921_LoC_G6520_s100_.P6.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2304.0 3063.0\n23865.0 3186.0\n23898.0 22848.0\n2184.0 22731.0" | \
  gdaltransform -tps -output_xy P15_Neugut_1921_LoC_G6520_s100_.P6.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  P15_Neugut_1921_LoC_G6520_s100_.P6.vrt P15_Neugut_1921_LoC_G6520_s100_.P6.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES P15_Neugut_1921_LoC_G6520_s100_.P6.cut.vrt P15_Neugut_1921_LoC_G6520_s100_.P6.xyz