#!/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 2553.0 2739.0 24.1349 57.754 -gcp 29805.0 2712.0 25.368466666666666 57.80485 -gcp 29730.0 22461.0 25.429566666666666 57.33153333333333 -gcp 2541.0 22386.0 24.215583333333335 57.2808 1915_3verst_de_126k/uw/Reihe_VII_Blatt_4_Lemsal_1915_uw.jpg Reihe_VII_Blatt_4_Lemsal_1915_uw.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2525.25 12571.504997223765\n2553.0 2739.0\n16176.0 2696.984175458079\n29805.0 2712.0\n29775.0 12591.00249861188\n29730.0 22461.0\n16136.25 22432.504997223765\n2541.0 22386.0" | \
  gdaltransform -tps -output_xy Reihe_VII_Blatt_4_Lemsal_1915_uw.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_VII_Blatt_4_Lemsal_1915_uw.vrt Reihe_VII_Blatt_4_Lemsal_1915_uw.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Reihe_VII_Blatt_4_Lemsal_1915_uw.cut.vrt Reihe_VII_Blatt_4_Lemsal_1915_uw.xyz