#!/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 3090.0 1719.0 24.337216666666666 57.25 -gcp 24444.0 1650.0 24.837216666666666 57.25 -gcp 24654.0 21405.0 24.837216666666666 57 -gcp 3102.0 21483.0 24.337216666666666 57 nr/KdwR-LC_P13_Wangasch_1917_.jpg KdwR-LC_P13_Wangasch_1917_.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "3090.0 1719.0\n24444.0 1650.0\n24654.0 21405.0\n3102.0 21483.0" | \
  gdaltransform -tps -output_xy KdwR-LC_P13_Wangasch_1917_.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  KdwR-LC_P13_Wangasch_1917_.vrt KdwR-LC_P13_Wangasch_1917_.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES KdwR-LC_P13_Wangasch_1917_.cut.vrt KdwR-LC_P13_Wangasch_1917_.xyz