#!/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 2364.0 1602.0 25.837216666666666 56.5 -gcp 16977.0 1575.0 26.337216666666666 56.5 -gcp 16992.0 14769.0 26.337216666666666 56.25 -gcp 2343.0 14766.0 25.837216666666666 56.25 bruno/S16_Jakobstadt_1915_reimann-part.jpg S16_Jakobstadt_1915_reimann-part.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2364.0 1602.0\n16977.0 1575.0\n16992.0 14769.0\n2343.0 14766.0" | \
  gdaltransform -tps -output_xy S16_Jakobstadt_1915_reimann-part.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  S16_Jakobstadt_1915_reimann-part.vrt S16_Jakobstadt_1915_reimann-part.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES S16_Jakobstadt_1915_reimann-part.cut.vrt S16_Jakobstadt_1915_reimann-part.xyz