Create a large image by joining dynmap tiles together.

So far I have been opening the dynmap screen and taking screenshots, but I want to use cron to automatically date and save the screenshots, so I write a script.

https://gyazo.com/9a4bbeaf9294c91a928f480b5fc64753

code:python

import numpy as np

import skimage.util

import skimage.io

images = []

for x in reversed(range(32)):

for y in range(32):

image = skimage.io.imread(f'/opt/minecraft_server/plugins/dynmap/web/tiles/world/t/0_0/{y}_{x}.jpg/')

images.append(image)

out = skimage.util.montage(images, grid_shape=(32, 32), multichannel=True)

skimage.io.imsave('out.jpg', out)

It's done.

Create different places

https://gyazo.com/996417bb9053e75bc9aa86cbddb9719c

code:py

import numpy as np

import skimage.util

import skimage.io

TILE_DIR = "/opt/minecraft_server/plugins/dynmap/web/tiles"

world = "world"

cx = 0

cy = 1

images = []

for x in reversed(range(32)):

for y in range(32):

gx = cx * 32 + x

gy = cy * 32 + y

image = skimage.io.imread(f'{TILE_DIR}/{world}/t/{cy}_{cx}/{gy}_{gx}.jpg/')

images.append(image)

out = skimage.util.montage(images, grid_shape=(32, 32), multichannel=True)

skimage.io.imsave('out.jpg', out)

I thought it was a chunk and named it cx, but that doesn't seem to be the case, because a chunk is 16 units.

The tiles are joined, not manually screenshot, so they connect perfectly when lined up.

(They are lined up when viewed on a PC, on a smartphone they appear to be line-breaking due to lack of width.)

Then we'll make sure to save this with a date and time and start it in cron.

code:py

import numpy as np

import skimage.util

import skimage.io

import time

# settings

TILE_DIR = "/opt/minecraft_server/plugins/dynmap/web/tiles"

OUT_DIR = "/home/nishio/dynmap_concat"

world = "world"

tx = 0

ty = 1

# end settings

today = time.strftime("%Y-%m-%d")

images = []

for x in reversed(range(32)):

for y in range(32):

gx = tx * 32 + x

gy = ty * 32 + y

image = skimage.io.imread(f'{TILE_DIR}/{world}/t/{ty}_{tx}/{gy}_{gx}.jpg/')

images.append(image)

out = skimage.util.montage(images, grid_shape=(32, 32), multichannel=True)

skimage.io.imsave(f'{OUT_DIR}/{tx}_{ty}_{today}.jpg', out)

TODO When I have accumulated a certain amount, I'll connect them to make a time-lapse video.

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