515 lines
18 KiB
Python
515 lines
18 KiB
Python
# This file is part of the Minecraft Overviewer.
|
|
#
|
|
# Minecraft Overviewer is free software: you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License as published
|
|
# by the Free Software Foundation, either version 3 of the License, or (at
|
|
# your option) any later version.
|
|
#
|
|
# Minecraft Overviewer is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
|
|
# Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License along
|
|
# with the Overviewer. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import multiprocessing
|
|
import itertools
|
|
import os
|
|
import os.path
|
|
import hashlib
|
|
import functools
|
|
import re
|
|
import shutil
|
|
|
|
from PIL import Image
|
|
|
|
"""
|
|
This module has routines related to generating a quadtree of tiles
|
|
|
|
"""
|
|
|
|
def iterate_base4(d):
|
|
"""Iterates over a base 4 number with d digits"""
|
|
return itertools.product(xrange(4), repeat=d)
|
|
|
|
def catch_keyboardinterrupt(func):
|
|
"""Decorator that catches a keyboardinterrupt and raises a real exception
|
|
so that multiprocessing will propagate it properly"""
|
|
@functools.wraps(func)
|
|
def newfunc(*args, **kwargs):
|
|
try:
|
|
return func(*args, **kwargs)
|
|
except KeyboardInterrupt:
|
|
print "Ctrl-C caught!"
|
|
raise Exception("Exiting")
|
|
except:
|
|
import traceback
|
|
traceback.print_exc()
|
|
raise
|
|
return newfunc
|
|
|
|
class QuadtreeGen(object):
|
|
def __init__(self, worldobj, destdir, depth=None):
|
|
"""Generates a quadtree from the world given into the
|
|
given dest directory
|
|
|
|
worldobj is a world.WorldRenderer object that has already been processed
|
|
|
|
If depth is given, it overrides the calculated value. Otherwise, the
|
|
minimum depth that contains all chunks is calculated and used.
|
|
|
|
"""
|
|
if depth is None:
|
|
# Determine quadtree depth (midpoint is always 0,0)
|
|
for p in xrange(15):
|
|
# Will 2^p tiles wide and high suffice?
|
|
|
|
# X has twice as many chunks as tiles, then halved since this is a
|
|
# radius
|
|
xradius = 2**p
|
|
# Y has 4 times as many chunks as tiles, then halved since this is
|
|
# a radius
|
|
yradius = 2*2**p
|
|
if xradius >= worldobj.maxcol and -xradius <= worldobj.mincol and \
|
|
yradius >= worldobj.maxrow and -yradius <= worldobj.minrow:
|
|
break
|
|
else:
|
|
raise ValueError("Your map is waaaay too big!")
|
|
|
|
self.p = p
|
|
else:
|
|
self.p = depth
|
|
xradius = 2**depth
|
|
yradius = 2*2**depth
|
|
|
|
# Make new row and column ranges
|
|
self.mincol = -xradius
|
|
self.maxcol = xradius
|
|
self.minrow = -yradius
|
|
self.maxrow = yradius
|
|
|
|
self.world = worldobj
|
|
self.destdir = destdir
|
|
|
|
def write_html(self, zoomlevel):
|
|
"""Writes out index.html"""
|
|
templatepath = os.path.join(os.path.split(__file__)[0], "template.html")
|
|
|
|
html = open(templatepath, 'r').read()
|
|
html = html.replace(
|
|
"{maxzoom}", str(zoomlevel))
|
|
|
|
with open(os.path.join(self.destdir, "index.html"), 'w') as output:
|
|
output.write(html)
|
|
|
|
def _get_cur_depth(self):
|
|
"""How deep is the quadtree currently in the destdir? This glances in
|
|
index.html to see what maxZoom is set to.
|
|
returns -1 if it couldn't be detected, file not found, or nothing in
|
|
index.html matched
|
|
"""
|
|
indexfile = os.path.join(self.destdir, "index.html")
|
|
if not os.path.exists(indexfile):
|
|
return -1
|
|
matcher = re.compile(r"maxZoom:\s*(\d+)")
|
|
p = -1
|
|
for line in open(indexfile, "r"):
|
|
res = matcher.search(line)
|
|
if res:
|
|
p = int(res.group(1))
|
|
break
|
|
return p
|
|
|
|
def _increase_depth(self):
|
|
"""Moves existing tiles into place for a larger tree"""
|
|
getpath = functools.partial(os.path.join, self.destdir, "tiles")
|
|
|
|
# At top level of the tree:
|
|
# quadrant 0 is now 0/3
|
|
# 1 is now 1/2
|
|
# 2 is now 2/1
|
|
# 3 is now 3/0
|
|
# then all that needs to be done is to regenerate the new top level
|
|
for dirnum in range(4):
|
|
newnum = (3,2,1,0)[dirnum]
|
|
|
|
newdir = "new" + str(dirnum)
|
|
newdirpath = getpath(newdir)
|
|
|
|
files = [str(dirnum)+".png", str(dirnum)+".hash", str(dirnum)]
|
|
newfiles = [str(newnum)+".png", str(newnum)+".hash", str(newnum)]
|
|
|
|
os.mkdir(newdirpath)
|
|
for f, newf in zip(files, newfiles):
|
|
p = getpath(f)
|
|
if os.path.exists(p):
|
|
os.rename(p, getpath(newdir, newf))
|
|
os.rename(newdirpath, getpath(str(dirnum)))
|
|
|
|
def _decrease_depth(self):
|
|
"""If the map size decreases, or perhaps the user has a depth override
|
|
in effect, re-arrange existing tiles for a smaller tree"""
|
|
getpath = functools.partial(os.path.join, self.destdir, "tiles")
|
|
|
|
# quadrant 0/3 goes to 0
|
|
# 1/2 goes to 1
|
|
# 2/1 goes to 2
|
|
# 3/0 goes to 3
|
|
# Just worry about the directories here, the files at the top two
|
|
# levels are cheap enough to replace
|
|
if os.path.exists(getpath("0", "3")):
|
|
os.rename(getpath("0", "3"), getpath("new0"))
|
|
shutil.rmtree(getpath("0"))
|
|
os.rename(getpath("new0"), getpath("0"))
|
|
|
|
if os.path.exists(getpath("1", "2")):
|
|
os.rename(getpath("1", "2"), getpath("new1"))
|
|
shutil.rmtree(getpath("1"))
|
|
os.rename(getpath("new1"), getpath("1"))
|
|
|
|
if os.path.exists(getpath("2", "1")):
|
|
os.rename(getpath("2", "1"), getpath("new2"))
|
|
shutil.rmtree(getpath("2"))
|
|
os.rename(getpath("new2"), getpath("2"))
|
|
|
|
if os.path.exists(getpath("3", "0")):
|
|
os.rename(getpath("3", "0"), getpath("new3"))
|
|
shutil.rmtree(getpath("3"))
|
|
os.rename(getpath("new3"), getpath("3"))
|
|
|
|
def go(self, procs):
|
|
"""Renders all tiles"""
|
|
|
|
# Make the destination dir
|
|
if not os.path.exists(self.destdir):
|
|
os.mkdir(self.destdir)
|
|
|
|
curdepth = self._get_cur_depth()
|
|
if curdepth != -1:
|
|
if self.p > curdepth:
|
|
print "Your map seemes to have expanded beyond its previous bounds."
|
|
print "Doing some tile re-arrangements... just a sec..."
|
|
for _ in xrange(self.p-curdepth):
|
|
self._increase_depth()
|
|
elif self.p < curdepth:
|
|
print "Your map seems to have shrunk. Re-arranging tiles, just a sec..."
|
|
for _ in xrange(curdepth - self.p):
|
|
self._decrease_depth()
|
|
|
|
# Create a pool
|
|
pool = multiprocessing.Pool(processes=procs)
|
|
|
|
# Render the highest level of tiles from the chunks
|
|
print "Computing the tile ranges and starting tile processers for inner-most tiles..."
|
|
print "This takes the longest. The other levels will go quicker"
|
|
results = []
|
|
for path in iterate_base4(self.p):
|
|
# Get the range for this tile
|
|
colstart, rowstart = self._get_range_by_path(path)
|
|
colend = colstart + 2
|
|
rowend = rowstart + 4
|
|
|
|
# This image is rendered at:
|
|
dest = os.path.join(self.destdir, "tiles", *(str(x) for x in path))
|
|
|
|
# And uses these chunks
|
|
tilechunks = self._get_chunks_in_range(colstart, colend, rowstart,
|
|
rowend)
|
|
|
|
# Put this in the pool
|
|
# (even if tilechunks is empty, render_worldtile will delete
|
|
# existing images if appropriate)
|
|
results.append(
|
|
pool.apply_async(func=render_worldtile, args=
|
|
(tilechunks, colstart, colend, rowstart, rowend, dest)
|
|
)
|
|
)
|
|
|
|
self.write_html(self.p)
|
|
|
|
# Wait for all results to finish
|
|
print "Rendering inner most zoom level tiles now!"
|
|
for i, result in enumerate(results):
|
|
# get() instead of wait() so we can see errors
|
|
result.get()
|
|
if i > 0 and (i % 100 == 0 or 100 % i == 0):
|
|
print "{0}/{1} tiles complete on level 1/{2}".format(
|
|
i, len(results), self.p)
|
|
print "Done"
|
|
|
|
# Now do the other layers
|
|
for zoom in xrange(self.p-1, 0, -1):
|
|
level = self.p - zoom + 1
|
|
print "Starting level", level
|
|
results = []
|
|
for path in iterate_base4(zoom):
|
|
# This image is rendered at:
|
|
dest = os.path.join(self.destdir, "tiles", *(str(x) for x in path[:-1]))
|
|
name = str(path[-1])
|
|
|
|
results.append(
|
|
pool.apply_async(func=render_innertile, args=
|
|
(dest, name)
|
|
)
|
|
)
|
|
|
|
for i, result in enumerate(results):
|
|
# get() instead of wait() so we can see errors
|
|
result.get()
|
|
if i > 0 and (i % 100 == 0 or 100 % i == 0):
|
|
print "{0}/{1} tiles complete for level {2}/{3}".format(
|
|
i, len(results), level, self.p)
|
|
print "Done"
|
|
|
|
# Do the final one right here:
|
|
render_innertile(os.path.join(self.destdir, "tiles"), "base")
|
|
|
|
pool.close()
|
|
pool.join()
|
|
|
|
def _get_range_by_path(self, path):
|
|
"""Returns the x, y chunk coordinates of this tile"""
|
|
x, y = self.mincol, self.minrow
|
|
|
|
xsize = self.maxcol
|
|
ysize = self.maxrow
|
|
|
|
for p in path:
|
|
if p in (1, 3):
|
|
x += xsize
|
|
if p in (2, 3):
|
|
y += ysize
|
|
xsize //= 2
|
|
ysize //= 2
|
|
|
|
return x, y
|
|
|
|
def _get_chunks_in_range(self, colstart, colend, rowstart, rowend):
|
|
"""Get chunks that are relevant to the tile rendering function that's
|
|
rendering that range"""
|
|
chunklist = []
|
|
for row in xrange(rowstart-16, rowend+1):
|
|
for col in xrange(colstart, colend+1):
|
|
c = self.world.chunkmap.get((col, row), None)
|
|
if c:
|
|
chunklist.append((col, row, c))
|
|
return chunklist
|
|
|
|
@catch_keyboardinterrupt
|
|
def render_innertile(dest, name):
|
|
"""
|
|
Renders a tile at os.path.join(dest, name)+".png" by taking tiles from
|
|
os.path.join(dest, name, "{0,1,2,3}.png")
|
|
"""
|
|
imgpath = os.path.join(dest, name) + ".png"
|
|
hashpath = os.path.join(dest, name) + ".hash"
|
|
|
|
if name == "base":
|
|
q0path = os.path.join(dest, "0.png")
|
|
q1path = os.path.join(dest, "1.png")
|
|
q2path = os.path.join(dest, "2.png")
|
|
q3path = os.path.join(dest, "3.png")
|
|
q0hash = os.path.join(dest, "0.hash")
|
|
q1hash = os.path.join(dest, "1.hash")
|
|
q2hash = os.path.join(dest, "2.hash")
|
|
q3hash = os.path.join(dest, "3.hash")
|
|
else:
|
|
q0path = os.path.join(dest, name, "0.png")
|
|
q1path = os.path.join(dest, name, "1.png")
|
|
q2path = os.path.join(dest, name, "2.png")
|
|
q3path = os.path.join(dest, name, "3.png")
|
|
q0hash = os.path.join(dest, name, "0.hash")
|
|
q1hash = os.path.join(dest, name, "1.hash")
|
|
q2hash = os.path.join(dest, name, "2.hash")
|
|
q3hash = os.path.join(dest, name, "3.hash")
|
|
|
|
# Check which ones exist
|
|
if not os.path.exists(q0hash):
|
|
q0path = None
|
|
q0hash = None
|
|
if not os.path.exists(q1hash):
|
|
q1path = None
|
|
q1hash = None
|
|
if not os.path.exists(q2hash):
|
|
q2path = None
|
|
q2hash = None
|
|
if not os.path.exists(q3hash):
|
|
q3path = None
|
|
q3hash = None
|
|
|
|
# do they all not exist?
|
|
if not (q0path or q1path or q2path or q3path):
|
|
if os.path.exists(imgpath):
|
|
os.unlink(imgpath)
|
|
if os.path.exists(hashpath):
|
|
os.unlink(hashpath)
|
|
return
|
|
|
|
# Now check the hashes
|
|
hasher = hashlib.md5()
|
|
if q0hash:
|
|
hasher.update(open(q0hash, "rb").read())
|
|
if q1hash:
|
|
hasher.update(open(q1hash, "rb").read())
|
|
if q2hash:
|
|
hasher.update(open(q2hash, "rb").read())
|
|
if q3hash:
|
|
hasher.update(open(q3hash, "rb").read())
|
|
if os.path.exists(hashpath):
|
|
oldhash = open(hashpath, "rb").read()
|
|
else:
|
|
oldhash = None
|
|
newhash = hasher.digest()
|
|
|
|
if newhash == oldhash:
|
|
# Nothing to do
|
|
return
|
|
|
|
# Create the actual image now
|
|
img = Image.new("RGBA", (384, 384), (38,92,255,0))
|
|
|
|
if q0path:
|
|
quad0 = Image.open(q0path).resize((192,192), Image.ANTIALIAS)
|
|
img.paste(quad0, (0,0))
|
|
if q1path:
|
|
quad1 = Image.open(q1path).resize((192,192), Image.ANTIALIAS)
|
|
img.paste(quad1, (192,0))
|
|
if q2path:
|
|
quad2 = Image.open(q2path).resize((192,192), Image.ANTIALIAS)
|
|
img.paste(quad2, (0, 192))
|
|
if q3path:
|
|
quad3 = Image.open(q3path).resize((192,192), Image.ANTIALIAS)
|
|
img.paste(quad3, (192, 192))
|
|
|
|
# Save it
|
|
img.save(imgpath)
|
|
with open(hashpath, "wb") as hashout:
|
|
hashout.write(newhash)
|
|
|
|
|
|
@catch_keyboardinterrupt
|
|
def render_worldtile(chunks, colstart, colend, rowstart, rowend, path):
|
|
"""Renders just the specified chunks into a tile and save it. Unlike usual
|
|
python conventions, rowend and colend are inclusive. Additionally, the
|
|
chunks around the edges are half-way cut off (so that neighboring tiles
|
|
will render the other half)
|
|
|
|
chunks is a list of (col, row, filename) of chunk images that are relevant
|
|
to this call
|
|
|
|
The image is saved to path+".png" and a hash is saved to path+".hash"
|
|
|
|
If there are no chunks, this tile is not saved (if it already exists, it is
|
|
deleted)
|
|
|
|
If the hash file already exists, it is checked against the hash of each chunk.
|
|
|
|
Standard tile size has colend-colstart=2 and rowend-rowstart=4
|
|
|
|
There is no return value
|
|
"""
|
|
# width of one chunk is 384. Each column is half a chunk wide. The total
|
|
# width is (384 + 192*(numcols-1)) since the first column contributes full
|
|
# width, and each additional one contributes half since they're staggered.
|
|
# However, since we want to cut off half a chunk at each end (384 less
|
|
# pixels) and since (colend - colstart + 1) is the number of columns
|
|
# inclusive, the equation simplifies to:
|
|
width = 192 * (colend - colstart)
|
|
# Same deal with height
|
|
height = 96 * (rowend - rowstart)
|
|
|
|
# The standard tile size is 3 columns by 5 rows, which works out to 384x384
|
|
# pixels for 8 total chunks. (Since the chunks are staggered but the grid
|
|
# is not, some grid coordinates do not address chunks) The two chunks on
|
|
# the middle column are shown in full, the two chunks in the middle row are
|
|
# half cut off, and the four remaining chunks are one quarter shown.
|
|
# The above example with cols 0-3 and rows 0-4 has the chunks arranged like this:
|
|
# 0,0 2,0
|
|
# 1,1
|
|
# 0,2 2,2
|
|
# 1,3
|
|
# 0,4 2,4
|
|
|
|
# Due to how the tiles fit together, we may need to render chunks way above
|
|
# this (since very few chunks actually touch the top of the sky, some tiles
|
|
# way above this one are possibly visible in this tile). Render them
|
|
# anyways just in case). "chunks" should include up to rowstart-16
|
|
|
|
# Before we render any tiles, check the hash of each image in this tile to
|
|
# see if it's changed.
|
|
hashpath = path + ".hash"
|
|
imgpath = path + ".png"
|
|
|
|
if not chunks:
|
|
# No chunks were found in this tile
|
|
if os.path.exists(imgpath):
|
|
os.unlink(imgpath)
|
|
if os.path.exists(hashpath):
|
|
os.unlink(hashpath)
|
|
return None
|
|
|
|
# Create the directory if not exists
|
|
dirdest = os.path.dirname(path)
|
|
if not os.path.exists(dirdest):
|
|
try:
|
|
os.makedirs(dirdest)
|
|
except OSError, e:
|
|
# Ignore errno EEXIST: file exists. Since this is multithreaded,
|
|
# two processes could conceivably try and create the same directory
|
|
# at the same time.
|
|
import errno
|
|
if e.errno != errno.EEXIST:
|
|
raise
|
|
|
|
imghash = hashlib.md5()
|
|
for col, row, chunkfile in chunks:
|
|
# Get the hash of this image and add it to our hash for this tile
|
|
imghash.update(
|
|
os.path.basename(chunkfile).split(".")[4]
|
|
)
|
|
digest = imghash.digest()
|
|
|
|
if os.path.exists(hashpath):
|
|
oldhash = open(hashpath, 'rb').read()
|
|
else:
|
|
oldhash = None
|
|
|
|
if digest == oldhash:
|
|
# All the chunks for this tile have not changed according to the hash
|
|
return
|
|
|
|
# Compile this image
|
|
tileimg = Image.new("RGBA", (width, height), (38,92,255,0))
|
|
|
|
# col colstart will get drawn on the image starting at x coordinates -(384/2)
|
|
# row rowstart will get drawn on the image starting at y coordinates -(192/2)
|
|
for col, row, chunkfile in chunks:
|
|
try:
|
|
chunkimg = Image.open(chunkfile)
|
|
except IOError, e:
|
|
print "Error opening file", chunkfile
|
|
print "Attempting to re-generate it..."
|
|
os.unlink(chunkfile)
|
|
# Do some string manipulation to determine what the chunk file is
|
|
# that goes with this image. Then call chunk.render_and_save
|
|
dirname, imagename = os.path.split(chunkfile)
|
|
parts = imagename.split(".")
|
|
datafile = "c.{0}.{1}.dat".format(parts[1],parts[2])
|
|
#print "Chunk came from data file", datafile
|
|
# XXX Don't forget to set cave mode here when it gets implemented!
|
|
chunk.render_and_save(os.path.join(dirname, datafile), False)
|
|
chunkimg = Image.open(chunkfile)
|
|
print "Success"
|
|
|
|
xpos = -192 + (col-colstart)*192
|
|
ypos = -96 + (row-rowstart)*96
|
|
|
|
tileimg.paste(chunkimg.convert("RGB"), (xpos, ypos), chunkimg)
|
|
|
|
# Save them
|
|
tileimg.save(imgpath)
|
|
with open(hashpath, "wb") as hashout:
|
|
hashout.write(digest)
|
|
|