#!/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 402.0 0.0 24 58.968333333333334 -gcp 8391.0 0.0 27 58.987833333333334 -gcp 8439.0 5106.0 27 58 -gcp 240.0 5007.0 24 58 RKKA500_O-35-A_Tallin_1941_greif_SOUTH.jpg RKKA500_O-35-A_Tallin_1941_greif_SOUTH.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "402.0 0.0\n8391.0 0.0\n8439.0 5106.0\n4345.875 5104.526681489717\n240.0 5007.0" | \
  gdaltransform -tps -output_xy RKKA500_O-35-A_Tallin_1941_greif_SOUTH.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  RKKA500_O-35-A_Tallin_1941_greif_SOUTH.vrt RKKA500_O-35-A_Tallin_1941_greif_SOUTH.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_SOUTH.cut.vrt RKKA500_O-35-A_Tallin_1941_greif_SOUTH.xyz