Package net.algart.math.patterns

Interface QuickPointCountPattern

All Superinterfaces:

Pattern

All Known Subinterfaces:

DirectPointSetPattern, DirectPointSetUniformGridPattern, RectangularPattern

All Known Implementing Classes:

SimplePattern

public interface QuickPointCountPattern
extends Pattern

Interface, used by Pattern implementations to indicate that they support quick access to the number of points in pattern.

More precisely, if a pattern implements this interface, then there is a guarantee that the following methods work very quickly (O(1) operations) and without any exceptions:

• Pattern.pointCount(),
• Pattern.largePointCount(),
• Pattern.isSurelySinglePoint(),
• Pattern.isSurelyOriginPoint().

There is a guarantee, that the following methods (and, in this package, only they) create patterns, implementing this interface:

• SimplePattern constructor,
• Patterns.newPattern(net.algart.math.Point...),
• Patterns.newPattern(java.util.Collection),
• Patterns.newUniformGridPattern(net.algart.math.Point, double[], java.util.Collection),
• Patterns.newIntegerPattern(net.algart.math.IPoint...),
• Patterns.newIntegerPattern(java.util.Collection),
• Patterns.newSphereIntegerPattern(net.algart.math.Point, double),
• Patterns.newEllipsoidIntegerPattern(net.algart.math.Point, double...),
• Patterns.newSurface(Pattern, net.algart.math.functions.Func),
• Patterns.newSpaceSegment(UniformGridPattern, Func, Func, double, double),
• Patterns.newRectangularUniformGridPattern(net.algart.math.Point, double[], net.algart.math.IRange...),
• Patterns.newRectangularIntegerPattern(net.algart.math.IRange...),
• Patterns.newRectangularIntegerPattern(net.algart.math.IPoint, net.algart.math.IPoint).

Author:

Daniel Alievsky

See Also:

• DirectPointSetPattern

Field Summary

Fields inherited from interface net.algart.math.patterns.Pattern

MAX_COORDINATE

Method Summary

Modifier and Type	Method	Description
boolean	isPointCountVeryLarge()	Returns true if and only if the number of points in this pattern is greater than Long.MAX_VALUE.

Methods inherited from interface net.algart.math.patterns.Pattern

allUnionDecompositions, carcass, coordArea, coordMax, coordMin, coordRange, dimCount, hasMinkowskiDecomposition, isSurelyInteger, isSurelyOriginPoint, isSurelySinglePoint, largePointCount, maxBound, maxCarcassMultiplier, minBound, minkowskiAdd, minkowskiDecomposition, minkowskiSubtract, multiply, pointCount, points, projectionAlongAxis, round, roundedCoordArea, roundedCoordRange, roundedPoints, scale, shift, symmetric, unionDecomposition

Method Details

isPointCountVeryLarge

boolean isPointCountVeryLarge()

Returns true if and only if the number of points in this pattern is greater than Long.MAX_VALUE. In this case, Pattern.pointCount() returns Long.MAX_VALUE, but you can get the approximate number of points by Pattern.largePointCount() method.

There is a guarantee that this method works very quickly (O(1) operations). This method never throws any exceptions.

Returns:

true if the number of points in this pattern is greater than Long.MAX_VALUE.