#!/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 588.0 642.0 24 60 -gcp 8388.0 717.0 27 60 -gcp 8460.0 6138.0 27 58.95516666666666 -gcp 402.0 6138.0 24 58.93683333333333 RKKA500_O-35-A_Tallin_1941_greif_NORTH.jpg RKKA500_O-35-A_Tallin_1941_greif_NORTH.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "588.0 642.0\n4486.125 717.0208449138411\n8388.0 717.0\n8460.0 6138.0\n402.0 6138.0" | \
  gdaltransform -tps -output_xy RKKA500_O-35-A_Tallin_1941_greif_NORTH.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  RKKA500_O-35-A_Tallin_1941_greif_NORTH.vrt RKKA500_O-35-A_Tallin_1941_greif_NORTH.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES RKKA500_O-35-A_Tallin_1941_greif_NORTH.cut.vrt RKKA500_O-35-A_Tallin_1941_greif_NORTH.xyz