panda3d.core.BitArray¶
-
class
BitArray¶ A dynamic array with an unlimited number of bits.
This is similar to a BitMask, except it appears to contain an infinite number of bits. You can use it very much as you would use a BitMask.
Inheritance diagram
-
__init__() → None¶
-
__init__(param0: BitArray) → None¶
-
__init__(init_value: WordType) → None¶
-
__init__(from: SparseArray) → None¶
-
static
allOn() → BitArray¶ Returns a BitArray with an infinite array of bits, all on.
- Return type
-
static
lowerOn(on_bits: int) → BitArray¶ Returns a BitArray whose lower on_bits bits are on.
- Return type
-
static
bit(index: int) → BitArray¶ Returns a BitArray with only the indicated bit on.
- Return type
-
static
range(low_bit: int, size: int) → BitArray¶ Returns a BitArray whose size bits, beginning at low_bit, are on.
- Return type
-
static
hasMaxNumBits() → bool¶
-
static
getMaxNumBits() → int¶
-
static
getNumBitsPerWord() → int¶
-
getNumBits() → size_t¶ Returns the current number of possibly different bits in this array. There are actually an infinite number of bits, but every bit higher than this bit will have the same value, either 0 or 1 (see
getHighestBits()).This number may grow and/or shrink automatically as needed.
- Return type
size_t
-
getBit(index: int) → bool¶ Returns true if the nth bit is set, false if it is cleared. It is valid for n to increase beyond
getNumBits(), but the return valuegetNumBits()will always be the same.
-
setBit(index: int) → None¶ Sets the nth bit on. If n >=
getNumBits(), this automatically extends the array.
-
clearBit(index: int) → None¶ Sets the nth bit off. If n >=
getNumBits(), this automatically extends the array.
-
setBitTo(index: int, value: bool) → None¶ Sets the nth bit either on or off, according to the indicated bool value.
-
getHighestBits() → bool¶ Returns true if the infinite set of bits beyond
getNumBits()are all on, or false of they are all off.
-
isZero() → bool¶ Returns true if the entire bitmask is zero, false otherwise.
-
isAllOn() → bool¶ Returns true if the entire bitmask is one, false otherwise.
-
extract(low_bit: int, size: int) → WordType¶ Returns a word that represents only the indicated range of bits within this BitArray, shifted to the least-significant position. size must be <=
getNumBitsPerWord().- Return type
WordType
-
store(value: WordType, low_bit: int, size: int) → None¶ Stores the indicated word into the indicated range of bits with this BitArray.
-
hasAnyOf(low_bit: int, size: int) → bool¶ Returns true if any bit in the indicated range is set, false otherwise.
-
hasAllOf(low_bit: int, size: int) → bool¶ Returns true if all bits in the indicated range are set, false otherwise.
-
setRange(low_bit: int, size: int) → None¶ Sets the indicated range of bits on.
-
clearRange(low_bit: int, size: int) → None¶ Sets the indicated range of bits off.
-
setRangeTo(value: bool, low_bit: int, size: int) → None¶ Sets the indicated range of bits to either on or off.
-
getNumOnBits() → int¶ Returns the number of bits that are set to 1 in the array. Returns -1 if there are an infinite number of 1 bits.
-
getNumOffBits() → int¶ Returns the number of bits that are set to 0 in the array. Returns -1 if there are an infinite number of 0 bits.
-
getLowestOnBit() → int¶ Returns the index of the lowest 1 bit in the array. Returns -1 if there are no 1 bits.
-
getLowestOffBit() → int¶ Returns the index of the lowest 0 bit in the array. Returns -1 if there are no 0 bits.
-
getHighestOnBit() → int¶ Returns the index of the highest 1 bit in the array. Returns -1 if there are no 1 bits or if there an infinite number of 1 bits.
-
getHighestOffBit() → int¶ Returns the index of the highest 0 bit in the array. Returns -1 if there are no 0 bits or if there an infinite number of 1 bits.
-
getNextHigherDifferentBit(low_bit: int) → int¶ Returns the index of the next bit in the array, above low_bit, whose value is different that the value of low_bit. Returns low_bit again if all bits higher than low_bit have the same value.
This can be used to quickly iterate through all of the bits in the array.
-
getNumWords() → size_t¶ Returns the number of possibly-unique words stored in the array.
- Return type
size_t
-
getWord(n: size_t) → MaskType¶ Returns the nth word in the array. It is valid for n to be greater than
getNumWords(), but the return value beyondgetNumWords()will always be the same.- Return type
MaskType
-
setWord(n: size_t, value: WordType) → None¶ Replaces the nth word in the array. If n >=
getNumWords(), this automatically extends the array.
-
invertInPlace() → None¶ Inverts all the bits in the BitArray. This is equivalent to array = ~array.
-
hasBitsInCommon(other: BitArray) → bool¶ Returns true if this BitArray has any “one” bits in common with the other one, false otherwise.
This is equivalent to (array & other) != 0, but may be faster.
-
clear() → None¶ Sets all the bits in the BitArray off.
-
output(out: ostream) → None¶ Writes the BitArray out as a hex number. For a BitArray, this is always the same as
outputHex(); it’s too confusing for the output format to change back and forth at runtime.
-
outputBinary(out: ostream, spaces_every: int) → None¶ Writes the BitArray out as a binary number, with spaces every four bits.
-
outputHex(out: ostream, spaces_every: int) → None¶ Writes the BitArray out as a hexadecimal number, with spaces every four digits.
-
write(out: ostream, indent_level: int) → None¶ Writes the BitArray out as a binary or a hex number, according to the number of bits.
-
compareTo(other: BitArray) → int¶ Returns a number less than zero if this BitArray sorts before the indicated other BitArray, greater than zero if it sorts after, or 0 if they are equivalent. This is based on the same ordering defined by operator <.
-
static
getClassType() → TypeHandle¶ - Return type
-