Package org.jmol.util
Class BSUtil
java.lang.Object
org.jmol.util.BSUtil
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Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionstatic javajs.util.BS
andNot
(javajs.util.BS a, javajs.util.BS b) static boolean
areEqual
(javajs.util.BS a, javajs.util.BS b) static int
cardinalityOf
(javajs.util.BS bs) cardinality = "total number of set bits"static javajs.util.BS
copy
(javajs.util.BS bs) static javajs.util.BS
copy2
(javajs.util.BS a, javajs.util.BS b) static javajs.util.BS
copyInvert
(javajs.util.BS bs, int n) static javajs.util.BS
deleteBits
(javajs.util.BS bs, javajs.util.BS bsDelete) this one slides deleted bits out of a pattern.static boolean
haveCommon
(javajs.util.BS a, javajs.util.BS b) static javajs.util.BS
invertInPlace
(javajs.util.BS bs, int n) inverts the bitset bits 0 through n-1, and returns a reference to the modified bitsetstatic javajs.util.BS
newAndSetBit
(int i) static javajs.util.BS
newBitSet2
(int i0, int i1) static void
offset
(javajs.util.BS bs0, int pos, int offset) offset the bitset in place by the specified number of bits starting at a given positionstatic javajs.util.BS
setAll
(int n) static void
setMapBitSet
(Map<String, javajs.util.BS> ht, int i1, int i2, String key) static void
shiftBits
(javajs.util.BS bs, javajs.util.BS bsAdded, boolean setIfFound, int iLast) this one slides bits to higher positions based on a pattern.static javajs.util.BS
toggleInPlace
(javajs.util.BS a, javajs.util.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
public static final javajs.util.BS 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
public static javajs.util.BS newAndSetBit(int i) -
areEqual
public static boolean areEqual(javajs.util.BS a, javajs.util.BS b) -
haveCommon
public static boolean haveCommon(javajs.util.BS a, javajs.util.BS b) -
cardinalityOf
public static int cardinalityOf(javajs.util.BS bs) cardinality = "total number of set bits"- Parameters:
bs
-- Returns:
- number of set bits
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newBitSet2
public static javajs.util.BS newBitSet2(int i0, int i1) -
setAll
public static javajs.util.BS setAll(int n) -
andNot
public static javajs.util.BS andNot(javajs.util.BS a, javajs.util.BS b) -
copy
public static javajs.util.BS copy(javajs.util.BS bs) -
copy2
public static javajs.util.BS copy2(javajs.util.BS a, javajs.util.BS b) -
copyInvert
public static javajs.util.BS copyInvert(javajs.util.BS bs, int n) -
invertInPlace
public static javajs.util.BS invertInPlace(javajs.util.BS bs, int n) 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
public static javajs.util.BS toggleInPlace(javajs.util.BS a, javajs.util.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.- Parameters:
a
-b
-- Returns:
- a handy pointer to the working set, a
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deleteBits
public static javajs.util.BS deleteBits(javajs.util.BS bs, javajs.util.BS bsDelete) 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
public static void shiftBits(javajs.util.BS bs, javajs.util.BS bsAdded, boolean setIfFound, int iLast) 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
public static void offset(javajs.util.BS bs0, int pos, int 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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