#!/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 4962.0 5772.0 24.104066666666668 57.07212166666667 -gcp 40584.0 4704.0 24.124896666666668 57.07212166666667 -gcp 41514.0 37092.0 24.124896666666668 57.061706666666666 -gcp 5862.0 38304.0 24.104066666666668 57.061706666666666 LVVA_F1679_US217_GV6980-6997_GV7004/LVVA-001679-0217-006984-PLANSETE-38-g-3-IV_0005.JPG LVVA-001679-0217-006984-PLANSETE-38-g-3-IV_0005.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4962.0 5772.0\n40584.0 4704.0\n41514.0 37092.0\n5862.0 38304.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-006984-PLANSETE-38-g-3-IV_0005.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-006984-PLANSETE-38-g-3-IV_0005.vrt LVVA-001679-0217-006984-PLANSETE-38-g-3-IV_0005.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-006984-PLANSETE-38-g-3-IV_0005.cut.vrt LVVA-001679-0217-006984-PLANSETE-38-g-3-IV_0005.xyz