#!/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 3606.0 3441.0 27.25 56 -gcp 25680.0 3450.0 27.5 56 -gcp 25860.0 29865.0 27.5 55.833333333333336 -gcp 3690.0 30000.0 27.25 55.833333333333336 mapster/RKKA050_N-35-7-B_Bebrish`i_VIII-1932_UInd-VAC9619-000408@1734514.jpg RKKA050_N-35-7-B_Bebrish`i_VIII-1932_UInd-VAC9619-000408@1734514.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "3606.0 3441.0\n25680.0 3450.0\n25860.0 29865.0\n3690.0 30000.0" | \
  gdaltransform -tps -output_xy RKKA050_N-35-7-B_Bebrish`i_VIII-1932_UInd-VAC9619-000408@1734514.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  RKKA050_N-35-7-B_Bebrish`i_VIII-1932_UInd-VAC9619-000408@1734514.vrt RKKA050_N-35-7-B_Bebrish`i_VIII-1932_UInd-VAC9619-000408@1734514.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES RKKA050_N-35-7-B_Bebrish`i_VIII-1932_UInd-VAC9619-000408@1734514.cut.vrt RKKA050_N-35-7-B_Bebrish`i_VIII-1932_UInd-VAC9619-000408@1734514.xyz