#!/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 5130.0 6408.0 26.957836666666665 56.582618333333336 -gcp 41148.0 6474.0 26.999498333333335 56.582618333333336 -gcp 41052.0 39324.0 26.999498333333335 56.56179 -gcp 5010.0 39252.0 26.957836666666665 56.56179 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-003574-PLANSETE-085-i-4_3574.JPG LVVA-001679-0217-003574-PLANSETE-085-i-4_3574.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5130.0 6408.0\n41148.0 6474.0\n41052.0 39324.0\n5010.0 39252.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-003574-PLANSETE-085-i-4_3574.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-003574-PLANSETE-085-i-4_3574.vrt LVVA-001679-0217-003574-PLANSETE-085-i-4_3574.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-003574-PLANSETE-085-i-4_3574.cut.vrt LVVA-001679-0217-003574-PLANSETE-085-i-4_3574.xyz