#!/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 24.5408392 57.18394798 -gcp 14148.0 0.0 24.53865051 57.09759638 -gcp 14148.0 13794.0 24.38607182 57.09672735 -gcp 0.0 13794.0 24.38070059 57.18313447 GX10514/GX_10514_SK_frame_422.jpg GX_10514_SK_frame_422.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "288.0 1056.0\n13956.0 792.0\n13932.0 12528.0\n288.0 12348.0" | \
  gdaltransform -tps -output_xy GX_10514_SK_frame_422.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  GX_10514_SK_frame_422.vrt GX_10514_SK_frame_422.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES GX_10514_SK_frame_422.cut.vrt GX_10514_SK_frame_422.xyz