#!/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 27.02362060546875 57.58928470142726 -gcp 10485.0 0.0 27.02220439910889 57.56307602435858 -gcp 10485.0 10584.0 26.973967552185062 57.56359393777583 -gcp 0.0 10584.0 26.97454690933228 57.58971023533616 Aluksne-1989-1185/Aluksne-1989-1185-194.jpg Aluksne-1989-1185-194.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1005.0 1005.0\n960.0 9522.0\n9399.0 9540.0\n9441.0 1032.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-194.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-194.vrt Aluksne-1989-1185-194.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-194.cut.vrt Aluksne-1989-1185-194.xyz