#!/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 24.193096160889 56.842681984179 -gcp 10695.0 0.0 24.298152923584 56.845498531031 -gcp 10695.0 12027.0 24.300212860107 56.784143779574 -gcp 0.0 12027.0 24.195156097412 56.781327232722 LVVA_F7404_US1_GV90_0002.jpg LVVA_F7404_US1_GV90_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"615.0 438.0\n10044.0 478.5\n10029.0 11070.0\n609.0 10992.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV90_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV90_0002.vrt LVVA_F7404_US1_GV90_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV90_0002.cut.vrt LVVA_F7404_US1_GV90_0002.xyz