#!/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 26.985238342672 57.468478531866 -gcp 15045.0 0.0 27.131253060231 57.476668056293 -gcp 15045.0 15756.0 27.142977519902 57.395525814997 -gcp 0.0 15756.0 26.996962802343 57.38733629057 LVVA_F7404_US1_GV1763_0002.jpg LVVA_F7404_US1_GV1763_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"672.0 9231.0\n448.5 9079.5\n456.0 8688.0\n604.5 8145.0\n652.5 8032.5\n655.5 7686.0\n684.0 7635.0\n717.0 699.0\n10041.0 732.0\n9999.0 7770.0\n14674.5 7842.0\n14601.0 15009.0\n10305.0 14964.0\n10308.0 14571.0\n669.0 14601.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV1763_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV1763_0002.vrt LVVA_F7404_US1_GV1763_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV1763_0002.cut.vrt LVVA_F7404_US1_GV1763_0002.xyz