#!/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 25.180106163025 57.94900231822 -gcp 11517.0 0.0 25.287094116211 57.956767429513 -gcp 11517.0 15945.0 25.308122634888 57.87461358458 -gcp 0.0 15945.0 25.197401046753 57.867127433033 LVVA_F7404_US1_GV1245_0002.jpg LVVA_F7404_US1_GV1245_0002.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e \"1007.25 7717.5\n988.125 7715.25\n1113.0 579.0\n5905.5 685.5\n10692.0 816.0\n10608.0 7871.25\n10649.25 7875.75\n10587.0 14955.0\n5795.625 14941.5\n963.0 14865.0\" | \
  gdaltransform -tps -output_xy LVVA_F7404_US1_GV1245_0002.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}'))))" \
  LVVA_F7404_US1_GV1245_0002.vrt LVVA_F7404_US1_GV1245_0002.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LVVA_F7404_US1_GV1245_0002.cut.vrt LVVA_F7404_US1_GV1245_0002.xyz