Package org.jmol.util
Class BSUtil
java.lang.Object
org.jmol.util.BSUtil
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Field Summary
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionstatic BS
static boolean
static int
cardinalityOf
(BS bs) cardinality = "total number of set bits"static BS
static BS
static BS
copyInvert
(BS bs, int n) static BS
deleteBits
(BS bs, BS bsDelete) this one slides deleted bits out of a pattern.static boolean
haveCommon
(BS a, BS b) static BS
invertInPlace
(BS bs, int n) inverts the bitset bits 0 through n-1, and returns a reference to the modified bitsetstatic BS
newAndSetBit
(int i) static BS
newBitSet2
(int i0, int i1) static void
offset the bitset in place by the specified number of bits starting at a given positionstatic BS
setAll
(int n) static void
setMapBitSet
(Map<String, BS> ht, int i1, int i2, String key) static void
this one slides bits to higher positions based on a pattern.static BS
toggleInPlace
(BS a, BS b) a perhaps curious method: b is a reference set, perhaps all atoms in a certain molecule a is the working set, perhaps representing all displayed atoms For each set bit in b: a) if a is also set, then clear a's bit UNLESS b) if a is not set, then add to a all set bits of b Thus, if a equals b --> clear all if a is a subset of b, then --> b if b is a subset of a, then --> a not b if a only intersects with b, then --> a or b if a does not intersect with b, then a or b In "toggle" mode, when you click on any atom of the molecule, you want either: (a) all the atoms in the molecule to be displayed if not all are already displayed, or (b) the whole molecule to be hidden if all the atoms of the molecule are already displayed.
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Field Details
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emptySet
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Constructor Details
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BSUtil
public BSUtil()
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Method Details
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newAndSetBit
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areEqual
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haveCommon
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cardinalityOf
cardinality = "total number of set bits"- Parameters:
bs
-- Returns:
- number of set bits
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newBitSet2
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setAll
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andNot
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copy
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copy2
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copyInvert
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invertInPlace
inverts the bitset bits 0 through n-1, and returns a reference to the modified bitset- Parameters:
bs
-n
-- Returns:
- pointer to original bitset, now inverted
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toggleInPlace
a perhaps curious method: b is a reference set, perhaps all atoms in a certain molecule a is the working set, perhaps representing all displayed atoms For each set bit in b: a) if a is also set, then clear a's bit UNLESS b) if a is not set, then add to a all set bits of b Thus, if a equals b --> clear all if a is a subset of b, then --> b if b is a subset of a, then --> a not b if a only intersects with b, then --> a or b if a does not intersect with b, then a or b In "toggle" mode, when you click on any atom of the molecule, you want either: (a) all the atoms in the molecule to be displayed if not all are already displayed, or (b) the whole molecule to be hidden if all the atoms of the molecule are already displayed.- Parameters:
a
-b
-- Returns:
- a handy pointer to the working set, a
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deleteBits
this one slides deleted bits out of a pattern. deleteBits 101011b, 000011b --> 1010b Java 1.4, not 1.3- Parameters:
bs
-bsDelete
-- Returns:
- shorter bitset
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shiftBits
this one slides bits to higher positions based on a pattern. shiftBits 101011b, 000011b --> 10101100b- Parameters:
bs
-bsAdded
-setIfFound
-iLast
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offset
offset the bitset in place by the specified number of bits starting at a given position- Parameters:
bs0
-pos
- starting position; no change before thisoffset
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setMapBitSet
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