#!/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 2106.0 1560.0 25.337216666666666 56.5 -gcp 16671.0 1464.0 25.837216666666666 56.5 -gcp 16791.0 14700.0 25.837216666666666 56.25 -gcp 2121.0 14784.0 25.337216666666666 56.25 bruno/R16_Buschhof_1915.jpg R16_Buschhof_1915.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2106.0 1560.0\n16671.0 1464.0\n16791.0 14700.0\n2121.0 14784.0" | \
  gdaltransform -tps -output_xy R16_Buschhof_1915.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  R16_Buschhof_1915.vrt R16_Buschhof_1915.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES R16_Buschhof_1915.cut.vrt R16_Buschhof_1915.xyz