#!/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 24.697952270508 57.401601000846 -gcp 10755.0 0.0 24.822235107422 57.408721430086 -gcp 10755.0 13848.0 24.839916229248 57.325131126099 -gcp 0.0 13848.0 24.711513519287 57.316047850801 LVVA_F7404_US1_GV1350_0002.jpg LVVA_F7404_US1_GV1350_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"690.0 888.0\n9996.0 750.0\n10104.0 7824.0\n4829.625 7900.125\n4824.0 8462.25\n4806.0 9021.0\n774.0 8964.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV1350_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV1350_0002.vrt LVVA_F7404_US1_GV1350_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV1350_0002.cut.vrt LVVA_F7404_US1_GV1350_0002.xyz