#!/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 0.0 0.0 26.650106906890873 57.57324879674816 -gcp 10491.0 0.0 26.65019273757935 57.546660107865414 -gcp 10491.0 10608.0 26.600389480590824 57.54675222340602 -gcp 0.0 10608.0 26.601333618164066 57.573076205538925 Aluksne-1989-1185/Aluksne-1989-1185-188.jpg Aluksne-1989-1185-188.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1086.0 972.0\n987.0 9513.0\n9441.0 9591.0\n9540.0 1041.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-188.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-188.vrt Aluksne-1989-1185-188.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-188.cut.vrt Aluksne-1989-1185-188.xyz