#!/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 3231.0 2697.0 26.647333333333332 57.37153333333333 -gcp 45984.0 2601.0 27.87815 57.39706666666667 -gcp 45831.0 33258.0 27.908883333333332 56.924366666666664 -gcp 3273.0 33213.0 26.69558333333333 56.89803333333333 1915_3verst_de_126k/amwig/Reihe_VIII_Blatt_6_Marienhausen_1917.jpg Reihe_VIII_Blatt_6_Marienhausen_1917.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "3205.5 17988.018323153803\n3231.0 2697.0\n24609.0 2587.4658523042754\n45984.0 2601.0\n45940.5 17962.505830094393\n45831.0 33258.0\n24570.0 33179.97001665741\n3273.0 33213.0" | \
  gdaltransform -tps -output_xy Reihe_VIII_Blatt_6_Marienhausen_1917.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_VIII_Blatt_6_Marienhausen_1917.vrt Reihe_VIII_Blatt_6_Marienhausen_1917.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Reihe_VIII_Blatt_6_Marienhausen_1917.cut.vrt Reihe_VIII_Blatt_6_Marienhausen_1917.xyz