#!/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 2289.0 2460.0 24.053533333333334 58.22678333333333 -gcp 29793.0 2424.0 25.306583333333332 58.27615 -gcp 29832.0 22011.0 25.368466666666666 57.80485 -gcp 2310.0 22047.0 24.1349 57.754 1915_3verst_de_126k/uw/Reihe_VI_Blatt_4_Gutmannsbach_1915_uw.jpg Reihe_VI_Blatt_4_Gutmannsbach_1915_uw.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2265.0 12264.005830094391\n2289.0 2460.0\n29793.0 2424.0\n29819.25 12220.501665741254\n29832.0 22011.0\n16059.75 22012.4908384231\n2310.0 22047.0" | \
  gdaltransform -tps -output_xy Reihe_VI_Blatt_4_Gutmannsbach_1915_uw.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_VI_Blatt_4_Gutmannsbach_1915_uw.vrt Reihe_VI_Blatt_4_Gutmannsbach_1915_uw.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Reihe_VI_Blatt_4_Gutmannsbach_1915_uw.cut.vrt Reihe_VI_Blatt_4_Gutmannsbach_1915_uw.xyz