de.gsi.chart.renderer.spi.marchingsquares

Class PathGenerator

java.lang.Object

de.gsi.chart.renderer.spi.marchingsquares.PathGenerator

public class PathGenerator
extends Object

An object that knows how to translate a Grid of Marching Squares Contour Cells into a Java AWT General Path.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	PathGenerator.NoSaddlePointException

Method Summary

Modifier and Type	Method and Description
GeneralPath	generalPath(de.gsi.chart.renderer.spi.marchingsquares.Grid grid) Construct a GeneralPath representing the isoline, itself represented by a given Grid.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

generalPath

public GeneralPath generalPath(de.gsi.chart.renderer.spi.marchingsquares.Grid grid)

Construct a GeneralPath representing the isoline, itself represented by a given Grid.

IMPLEMENTATION NOTE: This method is destructive. It alters the Grid instance as it generates the resulting path. If the 'original' Grid instance is needed after invoking this method then it's the responsibility of the caller to deep clone it before passing it here.

Parameters:

grid - the matrix of contour cells w/ side crossing coordinates already interpolated and normalized; i.e. in the range 0.0..1.0.

Returns:

the geometries of a contour, including sub-path(s) for disjoint area final holes.