#!/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 24.689798355103 57.86347508658 -gcp 10629.0 0.0 24.792795181274 57.872468322318 -gcp 10629.0 8859.0 24.809532165527 57.82290914412 -gcp 0.0 8859.0 24.700870513916 57.815046494663 LVVA_F7404_US1_GV1936_0002.jpg LVVA_F7404_US1_GV1936_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"573.0 561.0\n10110.0 549.0\n10047.0 7713.0\n7708.5 7695.0\n7467.0 7935.0\n7306.5 8059.5\n7212.0 8110.5\n7123.5 8112.0\n7033.5 8082.0\n6969.0 8011.5\n6897.0 7885.5\n6796.5 7692.0\n474.0 7656.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV1936_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV1936_0002.vrt LVVA_F7404_US1_GV1936_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV1936_0002.cut.vrt LVVA_F7404_US1_GV1936_0002.xyz