#!/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 1005.0 1467.0 23.126666666666665 57 -gcp 10761.0 1425.0 23.576666666666668 57 -gcp 10818.0 11301.0 23.576666666666668 56.75 -gcp 999.0 11352.0 23.126666666666665 56.75 Bruno/IV-14_Tuckum.jpg IV-14_Tuckum.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "1005.0 1467.0\n10761.0 1425.0\n10818.0 11301.0\n999.0 11352.0" | \
  gdaltransform -tps -output_xy IV-14_Tuckum.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  IV-14_Tuckum.vrt IV-14_Tuckum.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES IV-14_Tuckum.cut.vrt IV-14_Tuckum.xyz