#!/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 2883.0 1008.0 21 57.416666666666664 -gcp 7914.0 1020.0 22 57.41888333333333 -gcp 7851.0 4950.0 22 57 -gcp 2787.0 4833.0 21 57 k_001_kta-3-414_12.jpeg k_001_kta-3-414_12.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1008.0 1002.0\n990.0 7623.0\n8766.0 7656.0\n8805.0 1020.0" | \
  gdaltransform -tps -output_xy k_001_kta-3-414_12.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  k_001_kta-3-414_12.vrt k_001_kta-3-414_12.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_12.cut.vrt k_001_kta-3-414_12.xyz