#!/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 26.615309579849246 57.47663919821068 -gcp 10506.0 0.0 26.613603694915774 57.44966318018394 -gcp 10506.0 10566.0 26.56377567481995 57.45031251490202 -gcp 0.0 10566.0 26.56449450683594 57.477204547976704 Aluksne-1989-1186/Aluksne-1989-1186-194.jpg Aluksne-1989-1186-194.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1086.0 1026.0\n9552.0 1029.0\n9528.0 9468.0\n1053.0 9456.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-194.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-194.vrt Aluksne-1989-1186-194.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-194.cut.vrt Aluksne-1989-1186-194.xyz