Class VariableBuffer

Hierarchy: Object , VariableBuffer

public class VariableBuffer

Creates a buffer polygon with a varying buffer distance at each vertex along a line.

Only single lines are supported as input, since buffer widths are typically specified individually for each line.

Authors:: Martin Davis

public VariableBuffer(Geometry line, double[] distance)

Creates a generator for a variable-distance line buffer.

Parameters:: line - line the linestring to buffer; distance - distance the buffer distance for each vertex of the line

public static Geometry buffer(Geometry line, double startDistance, double endDistance)

Creates a buffer polygon along a line with the buffer distance interpolated between a start distance and an end distance.

Parameters:: line - line the line to buffer; startDistance - startDistance the buffer width at the start of the line; endDistance - endDistance the buffer width at the end of the line

Returns:: the variable-distance buffer polygon

public static Geometry buffer(Geometry line, double startDistance, double midDistance, double endDistance)

Creates a buffer polygon along a line with the buffer distance interpolated between a start distance, a middle distance and an end distance. The middle distance is attained at the vertex at or just past the half-length of the line. For smooth buffering of a LinearRing (or the rings of a Polygon) the start distance and end distance should be equal.

Parameters:: line - line the line to buffer; startDistance - startDistance the buffer width at the start of the line; midDistance - midDistance the buffer width at the middle vertex of the line; endDistance - endDistance the buffer width at the end of the line

Returns:: the variable-distance buffer polygon

public static Geometry buffer(Geometry line, double[] distance)

Creates a buffer polygon along a line with the distance specified at each vertex.

Parameters:: line - line the line to buffer; distance - distance the buffer distance for each vertex of the line

Returns:: the variable-distance buffer polygon

public Geometry getResult()

Computes the buffer polygon.

Returns:: a buffer polygon