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matrix.py
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matrix.py
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class CharMap:
def __init__(self, w, h, fill=' '):
assert w >= 0
assert h >= 0
assert fill is None or (isinstance(fill, str) and len(fill) == 1)
self.w = w
self.h = h
self.chars = [ [ fill for x in range(w) ] for y in range(h) ]
self.changes = [ [ True for x in range(w) ] for y in range(h) ]
def set_size(self, w, h, fill=' '):
if w == self.w and h == self.h: return
assert w >= 0 and h >= 0
if h > self.h:
self.chars.extend(
[ [ fill for x in range(w) ] for y in range(self.h, h) ])
self.changes.extend(
[ [ True for x in range(w) ] for y in range(self.h, h) ])
elif h < self.h:
self.chars = self.chars[:h]
self.changes = self.changes[:h]
if w > self.w:
for row in self.chars[:min(self.h, h)]:
row.extend([ fill for x in range(self.w, w) ])
for row in self.changes[:min(self.h, h)]:
row.extend([ True for x in range(self.w, w) ])
elif w < self.w:
for row in self.chars[:min(self.h, h)]:
del row[w:]
for row in self.changes[:min(self.h, h)]:
del row[w:]
self.w = w
self.h = h
def set(self, c, x, y):
assert c is None or (isinstance(c, str) and len(c) == 1)
assert x >= 0 and x < self.w
assert y >= 0 and y < self.h
if self.chars[y][x] == c: return
self.chars[y][x] = c
self.changes[y][x] = True
def fill(self, c, x, y, w, h):
assert c is None or (isinstance(c, str) and len(c) == 1)
assert x >= 0 and x + w <= self.w
assert y >= 0 and y + h <= self.h
for cy in range(y, y + h):
chars = self.chars[cy]
changes = self.changes[cy]
for cx in range(x, x + w):
if chars[cx] != c:
chars[cx] = c
changes[cx] = True
def merge(self, matrix, x=0, y=0):
assert x >= 0 and x + matrix.w <= self.w
assert y >= 0 and y + matrix.h <= self.h
# FIXME: consider only changed items of matrix then clear changes?
for cy in range(y, y + matrix.h):
chars = self.chars[cy]
changes = self.changes[cy]
mchars = matrix.chars[cy - y]
for cx in range(x, x + matrix.w):
mchar = mchars[cx - x]
if mchar is not None and chars[cx] != mchar:
chars[cx] = mchar
changes[cx] = True
def debug_chars(self):
return '\n'.join([
''.join([ c for c in line ])
for line in self.chars
])
def debug_changes(self):
return '\n'.join([
''.join([ '#' if c else '.' for c in line ])
for line in self.changes
])

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Wed, Sep 16, 4:39 AM (5 d, 11 h ago)
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matrix.py (2 KB)

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