Copies a section of a CoordinateSequence to another CoordinateSequence. The sequences may have different dimensions; in this case only the common dimensions are copied.

Parameters:: src - src the sequence to copy from; srcPos - srcPos the position in the source sequence to start copying at; dest - dest the sequence to copy to; destPos - destPos the position in the destination sequence to copy to; length - length the number of coordinates to copy

public static void copyCoord(CoordinateSequence src, int srcPos, CoordinateSequence dest, int destPos)

Copies a coordinate of a CoordinateSequence to another CoordinateSequence. The sequences may have different dimensions; in this case only the common dimensions are copied.

Parameters:: src - src the sequence to copy from; srcPos - srcPos the source coordinate to copy; dest - dest the sequence to copy to; destPos - destPos the destination coordinate to copy to

public static boolean isRing(CoordinateSequence seq)

Tests whether a CoordinateSequence forms a valid LinearRing, by checking the sequence length and closure (whether the first and last points are identical in 2D). Self-intersection is not checked.

Parameters:: seq - seq the sequence to test

See also:: LinearRing

Returns:: true if the sequence is a ring

public static CoordinateSequence ensureValidRing(CoordinateSequenceFactory fact, CoordinateSequence seq)

Ensures that a CoordinateSequence forms a valid ring, returning a new closed sequence of the correct length if required. If the input sequence is already a valid ring, it is returned without modification. If the input sequence is too short or is not closed, it is extended with one or more copies of the start point.

Parameters:: fact - fact the CoordinateSequenceFactory to use to create the new sequence; seq - seq the sequence to test

Returns:: the original sequence, if it was a valid ring, or a new sequence which is valid.

public static CoordinateSequence extend(CoordinateSequenceFactory fact, CoordinateSequence seq, int size)

public static boolean isEqual(CoordinateSequence cs1, CoordinateSequence cs2)

Tests whether two CoordinateSequences are equal. To be equal, the sequences must be the same length. They do not need to be of the same dimension, but the ordinate values for the smallest dimension of the two must be equal. Two NaN ordinates values are considered to be equal.

Parameters:: cs1 - cs1 a CoordinateSequence; cs2 - cs2 a CoordinateSequence

Returns:: true if the sequences are equal in the common dimensions

public static String toString(CoordinateSequence cs)

Creates a string representation of a CoordinateSequence. The format is:

   ( ord0,ord1.. ord0,ord1,...  ... )

Parameters:: cs - cs the sequence to output

Returns:: the string representation of the sequence

public static Coordinate minCoordinate(CoordinateSequence seq)

Returns the minimum coordinate, using the usual lexicographic comparison.

Parameters:: seq - seq the coordinate sequence to search

See also:: Coordinate#compareTo(Object)

Returns:: the minimum coordinate in the sequence, found using compareTo

public static int minCoordinateIndex(CoordinateSequence seq)

Returns the index of the minimum coordinate of the whole coordinate sequence, using the usual lexicographic comparison.

Parameters:: seq - seq the coordinate sequence to search

See also:: Coordinate#compareTo(Object)

Returns:: the index of the minimum coordinate in the sequence, found using compareTo

public static int minCoordinateIndex(CoordinateSequence seq, int from, int to)

Returns the index of the minimum coordinate of a part of the coordinate sequence (defined by from and to, using the usual lexicographic comparison.

Parameters:: seq - seq the coordinate sequence to search; from - from the lower search index; to - to the upper search index

See also:: Coordinate#compareTo(Object)

Returns:: the index of the minimum coordinate in the sequence, found using compareTo

public static void scroll(CoordinateSequence seq, Coordinate firstCoordinate)

Shifts the positions of the coordinates until firstCoordinate is first.

Parameters:: seq - seq the coordinate sequence to rearrange; firstCoordinate - firstCoordinate the coordinate to make first

public static void scroll(CoordinateSequence seq, int indexOfFirstCoordinate)

Shifts the positions of the coordinates until the coordinate at firstCoordinateIndex is first.

Parameters:: seq - seq the coordinate sequence to rearrange; indexOfFirstCoordinate - indexOfFirstCoordinate the index of the coordinate to make first

public static void scroll(CoordinateSequence seq, int indexOfFirstCoordinate, boolean ensureRing)

Shifts the positions of the coordinates until the coordinate at firstCoordinateIndex is first.

Parameters:: seq - seq the coordinate sequence to rearrange; indexOfFirstCoordinate - indexOfFirstCoordinate the index of the coordinate to make first; ensureRing - ensureRing makes sure that will be a closed ring upon exit

public static int indexOf(Coordinate coordinate, CoordinateSequence seq)

Returns the index of coordinate in a CoordinateSequence The first position is 0; the second, 1; etc.

Parameters:: coordinate - coordinate the Coordinate to search for; seq - seq the coordinate sequence to search

Returns:: the position of coordinate, or -1 if it is not found