#!/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 4554.0 7722.0 24.416523333333334 56.27017166666667 -gcp 40848.0 7530.0 24.458183333333334 56.27017166666667 -gcp 41004.0 40362.0 24.458183333333334 56.249341666666666 -gcp 4710.0 40554.0 24.416523333333334 56.249341666666666 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-002971-PLANSETE-041-i-15_2971.JPG LVVA-001679-0217-002971-PLANSETE-041-i-15_2971.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4554.0 7722.0\n40848.0 7530.0\n41004.0 40362.0\n4710.0 40554.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-002971-PLANSETE-041-i-15_2971.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-002971-PLANSETE-041-i-15_2971.vrt LVVA-001679-0217-002971-PLANSETE-041-i-15_2971.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-002971-PLANSETE-041-i-15_2971.cut.vrt LVVA-001679-0217-002971-PLANSETE-041-i-15_2971.xyz