#!/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 26.923815150421824 57.34927587983219 -gcp 10506.0 0.0 26.92686582545468 57.32389064578443 -gcp 10506.0 12810.0 26.868228703193935 57.3219068456741 -gcp 0.0 12810.0 26.866111436898265 57.34770894938946 Aluksne-1989-1186/Aluksne-1989-1186-67.jpg Aluksne-1989-1186-67.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1095.0 1104.0\n9600.0 1092.0\n9600.0 9519.0\n1089.0 9537.0" | \
  gdaltransform -tps -output_xy Aluksne-1989-1186-67.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Aluksne-1989-1186-67.vrt Aluksne-1989-1186-67.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Aluksne-1989-1186-67.cut.vrt Aluksne-1989-1186-67.xyz