#!/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 601.3564719233477 319.6911281600706 25.33128619 57.30457759 -gcp 17366.616264021737 933.5064079097097 25.29760301 57.32012343 -gcp 15689.14076821566 14124.941234228903 25.32254219 57.33369678 -gcp 311.3457276456286 13093.930991741585 25.35336345 57.31865343 GX4190/c_GX_4190_SD_frame_76.jpg c_GX_4190_SD_frame_76.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "0.0 0.0\n20061.0 0.0\n20061.0 16635.0\n0.0 16635.0" | \
  gdaltransform -tps -output_xy c_GX_4190_SD_frame_76.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  c_GX_4190_SD_frame_76.vrt c_GX_4190_SD_frame_76.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES c_GX_4190_SD_frame_76.cut.vrt c_GX_4190_SD_frame_76.xyz