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Fix PEP8 compliance

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This commit is contained in:
Craig Richardson 2018-05-15 15:00:11 +01:00
parent fd95ddf38e
commit 38e2c52599
1 changed files with 13 additions and 8 deletions
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21
Digital_Sand_Dotstar_Circuitpython_Edition/digitalsand.py
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@ -45,7 +45,8 @@ MAX_Y = HEIGHT * 256 - 1
class Grain:
"""A simple struct to hold position and velocity information for a single grain."""
"""A simple struct to hold position and velocity information
for a single grain."""
def __init__(self):
"""Initialize grain position and velocity."""
@ -71,7 +72,8 @@ occupied_bits = [False for _ in range(WIDTH * HEIGHT)]
def index_of_xy(x, y):
"""Convert an x/column and y/row into an index into a linear pixel array.
"""Convert an x/column and y/row into an index into
a linear pixel array.
:param int x: column value
:param int y: row value
@ -82,8 +84,9 @@ def index_of_xy(x, y):
def already_present(limit, x, y):
"""Check if a pixel is already used.
:param int limit: the index into the grain array of the grain being assigned a pixel
Only grains already allocated need to be checks against.
:param int limit: the index into the grain array of
the grain being assigned a pixel Only grains already
allocated need to be checks against.
:param int x: proposed clumn value for the new grain
:param int y: proposed row valuse for the new grain
"""
@ -185,10 +188,12 @@ while True:
g.vy //= -2
newidx = oldidx # no pixel change
else: # Diagonal intersection is more tricky...
# Try skidding along just one axis of motion if possible (start w/
# faster axis). Because we've already established that diagonal
# (both-axis) motion is occurring, moving on either axis alone WILL
# change the pixel index, no need to check that again.
# Try skidding along just one axis of motion if
# possible (start w/ faster axis). Because we've
# already established that diagonal (both-axis)
# motion is occurring, moving on either axis alone
# WILL change the pixel index, no need to check
# that again.
if abs(g.vx) > abs(g.vy): # x axis is faster
newidx = index_of_xy(newx, g.y)
# that pixel is free, take it! But...