pixelplanet/utils/osm-tiles

OSM tiles

This osm tiles and pictures are just informational, they don't get used for creating the map on directly on pixelplanet.fun.

Download zoomlevel 5

1. download tiles

for i in {0..31}; do mkdir $i; for u in {0..31}; do wget https://b.tile.thunderforest.com/mobile-atlas/5/$i/$u.png?apikey=7c352c8ff1244dd8b732e349e0b0fe8d -O $i/$u.png; done ; done

2. combine tiles

for i in {0..31}; do convert -append "$i/%d.png[0-31]" $i.png; done
convert +append "%d.png[0-31]" out.png

3. fix to our custom projection

• scale x: 1
• scale y: 1060 / 1024 = 530 / 512 = 265 / 256
• centered

convert out.png -resize 8192x8480\! final.png
# (8480 - 8192) / 2 = 144
mogrify -shave 0x144 final.png

4. clean up

for i in {0..31}; do rm $i.png; done
for i in {0..31}; do rm -r $i; done
rm out.png

Download zoomlevel 8

1. downloading it in columns

mkdir tmp
for i in {0..255}; do for u in {0..255}; do wget https://a.tile.openstreetmap.org/8/$i/$u.png -O tmp/$u.png; done; convert -append "tmp/%d.png[0-255]" $i.png; rm tmp/*; done
rm -r tmp

2. conbining straps t 2048 width, fix scale to our projection like above with zoomlevel 5

for i in {0..31}; do LOW=$(expr $i "*" 8); UP=$(expr $LOW + 7); echo "Generating s$i.png from $LOW to $UP"; convert +append "%d.png[${LOW}-${UP}]" s$i.png; done

3. delete old stripes

for i in {0..255}; do rm $i.png; done

4. convert to our projection

for i in {0..31}; do echo "Generating c$i.png"; convert s$i.png -resize 2048x67840\! -shave 0x1152 c$i.png; done

5. create subfolders for tiles

mkdir osm
for i in {0..31}; do mkdir osm/$i; done

6. split into tiles

for i in {0..32}; do echo "Generating tiles for x=$i"; convert c$i.png -crop 2048x2048 +adjoin osm/$i/%02d.png; done

7. clean up

rm s*.png
rm c*.png