LogalDeveloper/Minecraft-Overviewer
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added proper occlusion tracking to lighting function

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This commit is contained in:
Aaron Griffith
2010-10-14 13:36:20 -04:00
parent e51556f314
commit b44cb9c3f8
1 changed files with 28 additions and 11 deletions
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33
chunk.py
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@@ -332,10 +332,11 @@ class ChunkRenderer(object):
"""Calculates the lighting coefficient for the given
coordinate, using default lighting and peeking into
neighboring chunks, if needed. A lighting coefficient of 1.0
means fully black. Returns a tuple (coefficient, occluded),
where occluded is true if the given coordinate is filled with
a solid block, and therefore the returned coefficient is
just the default."""
means fully black.
Returns a tuple (coefficient, occluded), where occluded is
True if the given coordinate is filled with a solid block, and
therefore the returned coefficient is just the default."""
# fill it in with the default first (full skylight)
coefficient = self.calculate_darkness(15, 0)
@@ -347,11 +348,14 @@ class ChunkRenderer(object):
local_x = x
local_y = y
local_z = z
is_local_chunk = False
# find out what chunk we're in, and translate accordingly
if x >= 0 and y < 16:
blocks = self.blocks
skylight = self.skylight
blocklight = self.blocklight
is_local_chunk = True
elif x < 0:
local_x += 16
blocks = self.left_blocks
@@ -371,11 +375,21 @@ class ChunkRenderer(object):
# we have no useful info, return default
return (coefficient, False)
# calculate the return
# calculate the return...
occluded = not (blocks[local_x, local_y, local_z] in transparent_blocks)
# only calculate the coefficient if we're not occluded
if not occluded:
coefficient = self.calculate_darkness(skylight[local_x, local_y, local_z], blocklight[local_x, local_y, local_z])
# only say we're occluded if the point is in the CURRENT
# chunk, so that we don't get obvious inter-chunk dependencies
# (we want this here so we still have the default coefficient
# for occluded blocks, even when we don't report them as
# occluded)
if not is_local_chunk:
occluded = False
return (coefficient, occluded)
def chunk_render(self, img=None, xoff=0, yoff=0, cave=False):
@@ -509,15 +523,18 @@ class ChunkRenderer(object):
img.paste(t[0], (imgx, imgy), t[1])
# top face
black_coeff, _ = self.get_lighting_coefficient(x, y, z + 1)
black_coeff, face_occlude = self.get_lighting_coefficient(x, y, z + 1)
if not face_occlude:
img.paste((0,0,0), (imgx, imgy), ImageEnhance.Brightness(facemasks[0]).enhance(black_coeff))
# left face
black_coeff, _ = self.get_lighting_coefficient(x - 1, y, z)
black_coeff, face_occlude = self.get_lighting_coefficient(x - 1, y, z)
if not face_occlude:
img.paste((0,0,0), (imgx, imgy), ImageEnhance.Brightness(facemasks[1]).enhance(black_coeff))
# right face
black_coeff, _ = self.get_lighting_coefficient(x, y + 1, z)
black_coeff, face_occlude = self.get_lighting_coefficient(x, y + 1, z)
if not face_occlude:
img.paste((0,0,0), (imgx, imgy), ImageEnhance.Brightness(facemasks[2]).enhance(black_coeff))
# Draw edge lines