#!/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 5868.0 7650.0 22.375138333333332 57.54079333333333 -gcp 41028.0 7536.0 22.4168 57.54079333333333 -gcp 41088.0 40122.0 22.4168 57.51996333333334 -gcp 5892.0 40206.0 22.375138333333332 57.51996333333334 LVVA_F1679_US217_GV1-4373/LVVA-001679-0217-004210-PLANSETE-15-i-10_4210.JPG LVVA-001679-0217-004210-PLANSETE-15-i-10_4210.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "5868.0 7650.0\n41028.0 7536.0\n41088.0 40122.0\n5892.0 40206.0" | \
  gdaltransform -tps -output_xy LVVA-001679-0217-004210-PLANSETE-15-i-10_4210.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LVVA-001679-0217-004210-PLANSETE-15-i-10_4210.vrt LVVA-001679-0217-004210-PLANSETE-15-i-10_4210.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA-001679-0217-004210-PLANSETE-15-i-10_4210.cut.vrt LVVA-001679-0217-004210-PLANSETE-15-i-10_4210.xyz