#!/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 24.333944320679 57.719048205813 -gcp 10536.0 0.0 24.434881210327 57.7310562169 -gcp 10536.0 8433.0 24.450073242188 57.692038545838 -gcp 0.0 8433.0 24.353170394897 57.678594996724 LVVA_F7404_US1_GV1419_0002.jpg LVVA_F7404_US1_GV1419_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"426.0 216.0\n9990.0 306.0\n10089.0 7431.0\n462.0 7443.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV1419_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV1419_0002.vrt LVVA_F7404_US1_GV1419_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV1419_0002.cut.vrt LVVA_F7404_US1_GV1419_0002.xyz