#!/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 26.835576295852665 57.56528573693608 -gcp 10479.0 0.0 26.836391687393192 57.53956651186633 -gcp 10479.0 10596.0 26.787618398666385 57.538927329480465 -gcp 0.0 10596.0 26.787446737289432 57.565262719787896 Aluksne-1989-1185/Aluksne-1989-1185-114.jpg Aluksne-1989-1185-114.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1005.0 1020.0\n996.0 9555.0\n9429.0 9537.0\n9435.0 1008.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1185-114.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1185-114.vrt Aluksne-1989-1185-114.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1185-114.cut.vrt Aluksne-1989-1185-114.xyz