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This commit is contained in:
Joe Shochet 2002-07-17 03:51:21 +00:00
parent d69559a639
commit e16cddc3b3
1 changed files with 13 additions and 0 deletions
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13
direct/src/showbase/PythonUtil.py
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@ -2,6 +2,7 @@ import types
import string import string
import re import re
import math import math
import operator
def ifAbsentPut(dict, key, newValue): def ifAbsentPut(dict, key, newValue):
""" """
@ -345,3 +346,15 @@ def shortestDestAngle(src, dest):
Example: (shortest-dest-angle 50. -170.) --> 190. Example: (shortest-dest-angle 50. -170.) --> 190.
""" """
return (src + (reduceAngle(reduceAngle(dest) - reduceAngle(src)))) return (src + (reduceAngle(reduceAngle(dest) - reduceAngle(src))))
def binaryRepr(number, max_length = 32):
# This will only work reliably for relatively small numbers.
# Increase the value of max_length if you think you're going
# to use long integers
assert number < 2L << max_length
shifts = map (operator.rshift, max_length * [number], \
range (max_length - 1, -1, -1))
digits = map (operator.mod, shifts, max_length * [2])
if not digits.count (1): return 0
digits = digits [digits.index (1):]
return string.join (map (repr, digits), '')