#!/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 24.909181594849 57.45446258173 -gcp 11517.0 0.0 25.016899108887 57.457694640843 -gcp 11517.0 15945.0 25.023250579834 57.383470026259 -gcp 0.0 15945.0 24.915018081665 57.378797071923 LVVA_F7404_US1_GV1914_0002.jpg LVVA_F7404_US1_GV1914_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"1131.0 12594.0\n1008.0 4989.0\n1809.0 4320.0\n3339.0 3333.0\n4305.0 2802.0\n4803.0 2526.0\n5280.0 2238.0\n5826.0 1704.0\n6042.0 1494.0\n7152.0 1362.0\n8448.0 780.0\n10275.0 768.0\n10371.0 14649.0\n7140.0 14677.5\n7119.0 12591.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV1914_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV1914_0002.vrt LVVA_F7404_US1_GV1914_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV1914_0002.cut.vrt LVVA_F7404_US1_GV1914_0002.xyz