#!/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 26.649720668792728 57.551916078406755 -gcp 10500.0 0.0 26.6478967666626 57.52534061337392 -gcp 10500.0 10599.0 26.598554849624637 57.5259281895194 -gcp 0.0 10599.0 26.599799394607544 57.55268742757817 Aluksne-1989-1185/Aluksne-1989-1185-190.jpg Aluksne-1989-1185-190.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1092.0 996.0\n9540.0 1044.0\n9471.0 9576.0\n1020.0 9510.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-190.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-190.vrt Aluksne-1989-1185-190.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-190.cut.vrt Aluksne-1989-1185-190.xyz