Package org.jacop.constraints
Class Diff2
java.lang.Object
org.jacop.constraints.DecomposedConstraint<Constraint>
org.jacop.constraints.Constraint
org.jacop.constraints.Diff
org.jacop.constraints.Diff2
- All Implemented Interfaces:
SatisfiedPresent
,Stateful
,UsesQueueVariable
Diff2 constraint assures that any two rectangles from a vector of
rectangles does not overlap in at least one direction.
Zero-width rectangles can be packed anywhere.
- Version:
- 4.10
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Nested Class Summary
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Field Summary
FieldsModifier and TypeFieldDescription(package private) Diff2Var[]
(package private) boolean
int[]
It specifies a list of pairs of rectangles which can overlap.(package private) static AtomicInteger
Fields inherited from class org.jacop.constraints.Diff
currentStore, dimIthMinComparator, doProfile, rectangles, stamp, trace, variableQueue
Fields inherited from class org.jacop.constraints.Constraint
afcWeight, atomicExecution, consistencyPruningEvents, constraintScope, earlyTerminationOK, increaseWeight, numberId, scope, watchedVariableGrounded
Fields inherited from class org.jacop.constraints.DecomposedConstraint
queueIndex
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Constructor Summary
ConstructorsConstructorDescriptionIt creates a diff2 constraint.It creates a diff2 constraint.Diff2
(List<? extends IntVar> o1, List<? extends IntVar> o2, List<? extends IntVar> l1, List<? extends IntVar> l2) It creates a diff2 constraint.Diff2
(List<? extends IntVar> o1, List<? extends IntVar> o2, List<? extends IntVar> l1, List<? extends IntVar> l2, boolean profile) It creates a diff2 constraint.Conditional Diff2.Conditional Diff2.It creates a diff2 constraint.It creates a diff2 constraint.Conditional Diff2.It creates a diff2 constraint.It creates a diff2 constraint. -
Method Summary
Modifier and TypeMethodDescription(package private) boolean
findRectangles
(Rectangle r, int index, List<IntRectangle> UsedRect, List<Rectangle> ProfileCandidates, List<Rectangle> OverlappingRects, Set<IntVar> fdvQueue) void
It imposes the constraint in a given store.(package private) void
narrowRectangles
(Set<IntVar> fdvQueue) (package private) boolean
notOverlapping
(int i, int j, int[] exclusiveList) private Rectangle[]
onList
(int index, int[] exclusiveList) boolean
It checks if the constraint is satisfied.toString()
It produces a string representation of a constraint state.Methods inherited from class org.jacop.constraints.Diff
consistency, containsChangedVariable, getDefaultConsistencyPruningEvent, getRectangles, intervalOverlap, narrowRectangle, profileCheckRectangle, profileNarrowing, queueVariable, removeLevel
Methods inherited from class org.jacop.constraints.Constraint
afc, arguments, cleanAfterFailure, decompose, getConsistencyPruningEvent, getGuideConstraint, getGuideValue, getGuideVariable, grounded, grounded, id, impose, imposeDecomposition, increaseWeight, intArrayToString, long2int, numberArgs, removeConstraint, requiresMonotonicity, setConsistencyPruningEvent, setConstraintScope, setScope, setScope, setScope, setScope, setScope, setWatchedVariableGrounded, supplyGuideFeedback, toInt, toInt, updateAFC, watchedVariableGrounded
Methods inherited from class org.jacop.constraints.DecomposedConstraint
auxiliaryVariables, checkInput, checkInput, checkInputForDuplication, checkInputForDuplicationSkipSingletons, checkInputForNullness, checkInputForNullness, checkInputForNullness, derivative, getDubletonsSkipSingletons, imposeDecomposition
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface org.jacop.api.Stateful
isStateful
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Field Details
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idNumber
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EvalRects
Diff2Var[] EvalRects -
exceptionListPresent
boolean exceptionListPresent -
exclusiveList
public int[] exclusiveListIt specifies a list of pairs of rectangles which can overlap.
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Constructor Details
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Diff2
Conditional Diff2. The rectangles that are specified on the list Exclusive list is specified contains pairs of rectangles that are excluded from checking that they must be non-overlapping. The rectangles are numbered from 1, for example list [1, 3, 3, 4] specifies that rectangles 1 and 3 as well as 3 and 4 can overlap each other.- Parameters:
rectangles
- a list of rectangles.exclusiveList
- a list denoting the pair of rectangles, which can overlapdoProfile
- should profile be computed and used.
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Diff2
public Diff2(List<? extends IntVar> o1, List<? extends IntVar> o2, List<? extends IntVar> l1, List<? extends IntVar> l2, boolean profile) It creates a diff2 constraint.- Parameters:
o1
- list of variables denoting the origin in the first dimension.o2
- list of variables denoting the origin in the second dimension.l1
- list of variables denoting the length in the first dimension.l2
- list of variables denoting the length in the second dimension.profile
- specifies if the profile should be computed.
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Diff2
It creates a diff2 constraint.- Parameters:
rectangles
- list of rectangles with origins and lengths in both dimensions.
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Diff2
It creates a diff2 constraint.- Parameters:
rectangles
- list of rectangles with origins and lengths in both dimensions.profile
- specifies if the profile is computed and used.
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Diff2
public Diff2(List<? extends IntVar> o1, List<? extends IntVar> o2, List<? extends IntVar> l1, List<? extends IntVar> l2) It creates a diff2 constraint.- Parameters:
o1
- list of variables denoting the origin in the first dimension.o2
- list of variables denoting the origin in the second dimension.l1
- list of variables denoting the length in the first dimension.l2
- list of variables denoting the length in the second dimension.
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Diff2
It creates a diff2 constraint.- Parameters:
origin1
- list of variables denoting the origin in the first dimension.origin2
- list of variables denoting the origin in the second dimension.length1
- list of variables denoting the length in the first dimension.length2
- list of variables denoting the length in the second dimension.
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Diff2
It creates a diff2 constraint.- Parameters:
o1
- list of variables denoting the origin in the first dimension.o2
- list of variables denoting the origin in the second dimension.l1
- list of variables denoting the length in the first dimension.l2
- list of variables denoting the length in the second dimension.profile
- specifies if the profile should be computed.
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Diff2
It creates a diff2 constraint.- Parameters:
rectangles
- list of rectangles with origins and lengths in both dimensions.
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Diff2
It creates a diff2 constraint.- Parameters:
rectangles
- list of rectangles with origins and lengths in both dimensions.profile
- specifies if the profile is computed and used.
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Diff2
Conditional Diff2. The rectangles that are specified on the list Exclusive are excluded from checking that they must be non-overlapping. The rectangles are numbered from 1, for example list [[1,3], [3,4]] specifies that rectangles 1 and 3 as well as 3 and 4 can overlap each other.- Parameters:
rectangles
- - list of rectangles, each rectangle represented by a list of variables.exclusiveList
- - list of rectangles pairs which can overlap.
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Diff2
Conditional Diff2. The rectangles that are specified on the list Exclusive are excluded from checking that they must be non-overlapping. The rectangles are numbered from 1, for example list [[1,3], [3,4]] specifies that rectangles 1 and 3 as well as 3 and 4 can overlap each other.- Parameters:
rect
- - list of rectangles, each rectangle represented by a list of variables.exclusive
- - list of rectangles pairs which can overlap.
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Method Details
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onList
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notOverlapping
boolean notOverlapping(int i, int j, int[] exclusiveList) -
impose
Description copied from class:Constraint
It imposes the constraint in a given store.- Overrides:
impose
in classConstraint
- Parameters:
store
- the constraint store to which the constraint is imposed to.
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narrowRectangles
- Overrides:
narrowRectangles
in classDiff
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findRectangles
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satisfied
public boolean satisfied()Description copied from interface:SatisfiedPresent
It checks if the constraint is satisfied. It can return false even if constraint is satisfied but not all variables in its scope are grounded. It needs to return true if all variables in its scope are grounded and constraint is satisfied.Implementations of this interface for constraints that are not PrimitiveConstraint may require constraint imposition and consistency check as a requirement to work correctly.
- Specified by:
satisfied
in interfaceSatisfiedPresent
- Overrides:
satisfied
in classDiff
- Returns:
- true if constraint is possible to verify that it is satisfied.
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toString
Description copied from class:Constraint
It produces a string representation of a constraint state.
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