0

added some comments

This commit is contained in:
Andrew Brown
2011-10-24 18:17:13 -04:00
parent e29731fef3
commit 420e784451

View File

@@ -108,15 +108,16 @@ class RenderNode(object):
raise ValueError("there must be at least one quadtree to work on") raise ValueError("there must be at least one quadtree to work on")
self.options = options self.options = options
# A list of quadtree.QuadTree objects representing each rendermode
# requested
self.quadtrees = quadtrees self.quadtrees = quadtrees
#List of changed tiles #List of changed tiles
self.rendered_tiles = [] self.rendered_tiles = []
#bind an index value to the quadtree so we can find it again #bind an index value to the quadtree so we can find it again
#and figure out which worlds are where #and figure out which worlds are where
i = 0
self.worlds = [] self.worlds = []
for q in quadtrees: for i, q in enumerate(quadtrees):
q._render_index = i q._render_index = i
i += 1 i += 1
if q.world not in self.worlds: if q.world not in self.worlds:
@@ -163,10 +164,13 @@ class RenderNode(object):
else: else:
pool.map_async(bool,xrange(multiprocessing.cpu_count()),1) pool.map_async(bool,xrange(multiprocessing.cpu_count()),1)
# 1 quadtree object per rendermode requested
quadtrees = self.quadtrees quadtrees = self.quadtrees
# do per-quadtree init # Determine the total number of tiles by adding up the number of tiles
# from each quadtree. Also find the max zoom level (max_p). Even though
# each quadtree will always have the same zoom level, this bit of code
# does not make that assumption.
max_p = 0 max_p = 0
total = 0 total = 0
for q in quadtrees: for q in quadtrees:
@@ -174,7 +178,9 @@ class RenderNode(object):
if q.p > max_p: if q.p > max_p:
max_p = q.p max_p = q.p
self.max_p = max_p self.max_p = max_p
# Render the highest level of tiles from the chunks
# The next sections of code render the highest zoom level of tiles. The
# section after render the other levels.
results = collections.deque() results = collections.deque()
complete = 0 complete = 0
logging.info("Rendering highest zoom level of tiles now.") logging.info("Rendering highest zoom level of tiles now.")
@@ -247,7 +253,8 @@ class RenderNode(object):
self.print_statusline(complete, total, 1, True) self.print_statusline(complete, total, 1, True)
# Now do the other layers # The highest zoom level has been rendered.
# Now do the lower zoom levels
for zoom in xrange(self.max_p-1, 0, -1): for zoom in xrange(self.max_p-1, 0, -1):
level = self.max_p - zoom + 1 level = self.max_p - zoom + 1
assert len(results) == 0 assert len(results) == 0
@@ -341,6 +348,7 @@ class RenderNode(object):
@catch_keyboardinterrupt @catch_keyboardinterrupt
def render_worldtile_batch(batch): def render_worldtile_batch(batch):
# batch is a list. Each item is [quadtree_id, colstart, colend, rowstart, rowend, tilepath]
global child_rendernode global child_rendernode
rendernode = child_rendernode rendernode = child_rendernode
count = 0 count = 0