#!/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 25.09815931 57.18302968 -gcp 26652.0 0.0 25.10654926 57.10315015 -gcp 26652.0 23013.0 24.98153687 57.09744495 -gcp 0.0 23013.0 24.96930599 57.17884296 GX10514/c_GX_10514_SK_frame_434.jpg c_GX_10514_SK_frame_434.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "0.0 0.0\n0.0 23010.0\n26649.0 23010.0\n26649.0 0.0" | \
  gdaltransform -tps -output_xy c_GX_10514_SK_frame_434.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  c_GX_10514_SK_frame_434.vrt c_GX_10514_SK_frame_434.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES c_GX_10514_SK_frame_434.cut.vrt c_GX_10514_SK_frame_434.xyz