#!/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 1254.0 2358.0 26.607166666666668 57.84356666666667 -gcp 29397.0 2355.0 27.84665 57.871916666666664 -gcp 29367.0 22200.0 27.87815 57.39706666666667 -gcp 1272.0 22197.0 26.647333333333332 57.37153333333333 1915_3verst_de_126k/amwig/Reihe_VII_Blatt_6_Pjetschory_1915_amwig.jpg Reihe_VII_Blatt_6_Pjetschory_1915_amwig.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1209.0 12303.01332593004\n1254.0 2358.0\n15329.25 2364.004164353137\n29397.0 2355.0\n29385.75 12279.75124930594\n29367.0 22200.0\n22051.5 22151.99666851749\n15292.5 22115.954192115492\n1272.0 22197.0" | \
  gdaltransform -tps -output_xy Reihe_VII_Blatt_6_Pjetschory_1915_amwig.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_VII_Blatt_6_Pjetschory_1915_amwig.vrt Reihe_VII_Blatt_6_Pjetschory_1915_amwig.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Reihe_VII_Blatt_6_Pjetschory_1915_amwig.cut.vrt Reihe_VII_Blatt_6_Pjetschory_1915_amwig.xyz