#!/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 2787.0 1203.0 25.337216666666666 57.25 -gcp 16944.0 1245.0 25.837216666666666 57.25 -gcp 16923.0 14415.0 25.837216666666666 57 -gcp 2691.0 14343.0 25.337216666666666 57 bruno/R13 1919_Serben.jpg R13 1919_Serben.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2787.0 1203.0\n16944.0 1245.0\n16923.0 14415.0\n2691.0 14343.0" | \
  gdaltransform -tps -output_xy R13 1919_Serben.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  R13 1919_Serben.vrt R13 1919_Serben.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES R13 1919_Serben.cut.vrt R13 1919_Serben.xyz