#!/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 24.827470779419 57.460464749836 -gcp 9882.0 0.0 24.948577880859 57.471450781408 -gcp 9882.0 5715.0 24.963340759277 57.432153586015 -gcp 0.0 5715.0 24.842491149902 57.422033843672 LVVA_F7404_US1_GV360_0002.jpg LVVA_F7404_US1_GV360_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"2704.5 5224.5\n2649.0 5230.5\n2728.5 4671.0\n2748.0 4086.0\n3012.0 4108.5\n3249.0 4095.0\n3247.5 1197.0\n318.0 1168.5\n297.0 228.0\n6355.5 295.5\n9564.0 312.0\n9498.0 5121.0\n6175.5 5100.0\n6104.25 5145.75\n5959.5 5097.0\n2799.0 5082.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV360_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV360_0002.vrt LVVA_F7404_US1_GV360_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV360_0002.cut.vrt LVVA_F7404_US1_GV360_0002.xyz