#!/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 2554.5 2097.263197586727 27 57 -gcp 7668.0 1816.6063348416292 28 57 -gcp 7938.0 6552.470588235294 28 56.5 -gcp 2811.0 6810.386123680241 27 56.5 k_001_kta-3-414_24.jpeg k_001_kta-3-414_24.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1275.0 1155.0\n9085.5 1157.9954751131222\n9068.25 7791.751885369532\n1248.75 7797.0" | \
  gdaltransform -tps -output_xy k_001_kta-3-414_24.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  k_001_kta-3-414_24.vrt k_001_kta-3-414_24.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES k_001_kta-3-414_24.cut.vrt k_001_kta-3-414_24.xyz