#!/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 4272.0 3060.0 24.337216666666666 57 -gcp 25674.0 3294.0 24.837216666666666 57 -gcp 25701.0 22974.0 24.837216666666666 56.75 -gcp 4167.0 22725.0 24.337216666666666 56.75 ferro/P14_Uexkuel_1921_LoC_G6520_s100_.P6.jpg P14_Uexkuel_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 "4272.0 3060.0\n25674.0 3294.0\n25701.0 22974.0\n4167.0 22725.0" | \
  gdaltransform -tps -output_xy P14_Uexkuel_1921_LoC_G6520_s100_.P6.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  P14_Uexkuel_1921_LoC_G6520_s100_.P6.vrt P14_Uexkuel_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 P14_Uexkuel_1921_LoC_G6520_s100_.P6.cut.vrt P14_Uexkuel_1921_LoC_G6520_s100_.P6.xyz