#!/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 1755.0 1503.0 24.326666666666668 57.083333333333336 -gcp 10323.0 1518.0 24.476666666666667 57.083333333333336 -gcp 10353.0 10350.0 24.476666666666667 57 -gcp 1746.0 10359.0 24.326666666666668 57 133_Ringenberg_3.8.17_29X-30XI_1923.jpg 133_Ringenberg_3.8.17_29X-30XI_1923.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1755.0 1503.0\n10323.0 1518.0\n10353.0 10350.0\n1746.0 10359.0" | \
  gdaltransform -tps -output_xy 133_Ringenberg_3.8.17_29X-30XI_1923.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  133_Ringenberg_3.8.17_29X-30XI_1923.vrt 133_Ringenberg_3.8.17_29X-30XI_1923.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES 133_Ringenberg_3.8.17_29X-30XI_1923.cut.vrt 133_Ringenberg_3.8.17_29X-30XI_1923.xyz