#!/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 26.306934356689 57.457786981192 -gcp 10575.0 0.0 26.401605606079 57.469235377006 -gcp 10575.0 8397.0 26.423320770264 57.429519949798 -gcp 0.0 8397.0 26.327276229858 57.417550689291 LVVA_F7404_US1_GV2075_0002.jpg LVVA_F7404_US1_GV2075_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"558.0 984.0\n5112.0 996.0\n5392.5 951.0\n5650.5 972.0\n5896.5 1041.0\n6019.5 1096.5\n6153.0 1126.5\n6303.0 1053.0\n6417.0 1047.0\n6585.0 1062.0\n6670.5 993.0\n6696.0 883.5\n6729.0 735.0\n6789.0 607.5\n6856.5 517.5\n6910.5 501.0\n7122.0 502.5\n7249.5 991.5\n8715.375 991.125\n8737.875 908.625\n8759.25 990.75\n9948.0 1008.0\n9948.0 7458.0\n555.0 7374.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV2075_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV2075_0002.vrt LVVA_F7404_US1_GV2075_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV2075_0002.cut.vrt LVVA_F7404_US1_GV2075_0002.xyz