#!/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 25.487702527406 57.069642724329 -gcp 8859.0 0.0 25.499362202248 57.023383832792 -gcp 8859.0 20376.0 25.305884810037 57.012803454007 -gcp 0.0 20376.0 25.294225135195 57.059062345543 LVVA_F7404_US1_GV1747_0002.jpg LVVA_F7404_US1_GV1747_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"948.0 10062.0\n567.0 9702.0\n579.0 7827.0\n954.0 7530.0\n1017.0 891.0\n8127.0 891.0\n8095.5 8137.5\n8091.0 8746.5\n8121.0 8856.0\n7629.0 9609.0\n7122.0 9897.0\n6753.0 10353.0\n6717.0 10431.0\n6714.0 10548.0\n6801.0 10668.0\n8331.0 11787.0\n7042.5 13428.0\n6801.0 13302.0\n6672.0 13581.0\n6501.0 13584.0\n6057.0 13530.0\n5826.0 13608.0\n5382.0 13845.0\n4752.0 14493.0\n4755.0 14970.0\n945.0 14943.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV1747_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV1747_0002.vrt LVVA_F7404_US1_GV1747_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV1747_0002.cut.vrt LVVA_F7404_US1_GV1747_0002.xyz