#!/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 23.313481607589033 56.71135351927251 -gcp 0.0 16029.0 23.343965611990864 56.71110624418637 -gcp 12027.0 16029.0 23.343623246184947 56.698525944877716 -gcp 12027.0 0.0 23.31314941042747 56.69877316164194 03_Rajons_DobeleZ/LNA_KFFDA_F106_1_3769N.jpg LNA_KFFDA_F106_1_3769N.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 16029.0\n12027.0 16029.0\n12027.0 0.0" | \
  gdaltransform -tps -output_xy LNA_KFFDA_F106_1_3769N.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  LNA_KFFDA_F106_1_3769N.vrt LNA_KFFDA_F106_1_3769N.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES LNA_KFFDA_F106_1_3769N.cut.vrt LNA_KFFDA_F106_1_3769N.xyz