#!/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 2523.0 1305.0 21.326666666666668 55.75 -gcp 18249.0 1332.0 21.776666666666667 55.75 -gcp 18279.0 16830.0 21.776666666666667 55.5 -gcp 2421.0 16848.0 21.326666666666668 55.5 bruno/IX-10_w.y.jpg IX-10_w.y.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2523.0 1305.0\n18249.0 1332.0\n18279.0 16830.0\n2421.0 16848.0" | \
  gdaltransform -tps -output_xy IX-10_w.y.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  IX-10_w.y.vrt IX-10_w.y.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES IX-10_w.y.cut.vrt IX-10_w.y.xyz