程序包 wcontour

类 Contour

java.lang.Object

wcontour.Contour

public class Contour
extends Object

Contour class - including the functions of contour

版本:

$Revision: 1.6.1 $

作者:

Yaqiang Wang

构造器概要

构造器

构造器	说明
Contour()

方法概要

限定符和类型	方法	说明
static List<Polygon>	clipPolygons(List<Polygon> polygons, List<PointD> clipPList)	Clip polygons with a border polygon
static List<PolyLine>	clipPolylines(List<PolyLine> polylines, List<PointD> clipPList)	Clip polylines with a border polygon
static List<Polygon>	createCutContourPolygons(List<PolyLine> LineList, List<PointD> polyList, Extent aBound, double[] contour)	Create polygons from cutted contour lines
static List<PolyLine>	cutContourLines(List<PolyLine> alinelist, Border aBorder)	Cut contour lines with a polygon.
static List<PolyLine>	cutContourWithPolygon(List<PolyLine> alinelist, List<PointD> polyList)	Cut contour lines with a polygon.
static PointF	getCrossPoint(PointF aP1, PointF aP2, PointF bP1, PointF bP2)	Get cross point of two line segments
static String	getVersion()	Get version
static boolean	isClockwise(List<PointD> pointList)	Determine if the point list is clockwise
static boolean	pointInPolygon(List<PointD> poly, PointD aPoint)	Judge if a point is in a polygon
static boolean	pointInPolygon(Polygon aPolygon, PointD aPoint)	Judge if a point is in a polygon
static List<PolyLine>	smoothLines(List<PolyLine> aLineList)	Smooth polylines
static List<PointD>	smoothPoints(List<PointD> pointList)	Smooth points
static List<Border>	tracingBorders(double[][] S0, double[] X, double[] Y, int[][] S1, double undefData)	Tracing contour borders of the grid data with undefined data.
static List<PolyLine>	tracingContourLines(double[][] S0, double[] X, double[] Y, int nc, double[] contour, double undefData, List<Border> borders, int[][] S1)	Tracing contour lines from the grid data with undefine data
static List<Polygon>	tracingPolygons(double[][] S0, List<PolyLine> cLineList, List<Border> borderList, double[] contour)	Tracing polygons from contour lines and borders
static List<PolyLine>	tracingStreamline(double[][] U, double[][] V, double[] X, double[] Y, double UNDEF, int density)	Tracing stream lines

从类继承的方法 java.lang.Object

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

构造器详细资料

Contour

public Contour()

方法详细资料

getVersion

public static String getVersion()

Get version

返回:

Version

tracingContourLines

public static List<PolyLine> tracingContourLines(double[][] S0,
                                                 double[] X,
                                                 double[] Y,
                                                 int nc,
                                                 double[] contour,
                                                 double undefData,
                                                 List<Border> borders,
                                                 int[][] S1)

Tracing contour lines from the grid data with undefine data

参数:

S0 - input grid data

X - X coordinate array

Y - Y coordinate array

nc - number of contour values

contour - contour value array

undefData - Undefine data

borders - borders

S1 - data flag array

返回:

Contour line list

tracingBorders

public static List<Border> tracingBorders(double[][] S0,
                                          double[] X,
                                          double[] Y,
                                          int[][] S1,
                                          double undefData)

Tracing contour borders of the grid data with undefined data. Grid data are from left to right and from bottom to top. Grid data array: first dimention is Y, second dimention is X.

参数:

S0 - input grid data

X - x coordinate array

Y - y coordinate array

S1 - data flag array

undefData - undefine data

返回:

borderline list

cutContourWithPolygon

public static List<PolyLine> cutContourWithPolygon(List<PolyLine> alinelist,
                                                   List<PointD> polyList)

Cut contour lines with a polygon. Return the polylines inside of the polygon

参数:

alinelist - polyline list

polyList - border points of the cut polygon

返回:

Inside Polylines after cut

cutContourLines

public static List<PolyLine> cutContourLines(List<PolyLine> alinelist,
                                             Border aBorder)

Cut contour lines with a polygon. Return the polylines inside of the polygon

参数:

alinelist - polyline list

aBorder - border for clipping

返回:

inside plylines after clipping

smoothLines

public static List<PolyLine> smoothLines(List<PolyLine> aLineList)

Smooth polylines

参数:

aLineList - polyline list

返回:

polyline list after smoothing

smoothPoints

public static List<PointD> smoothPoints(List<PointD> pointList)

Smooth points

参数:

pointList - point list

返回:

smoothed point list

tracingPolygons

public static List<Polygon> tracingPolygons(double[][] S0,
                                            List<PolyLine> cLineList,
                                            List<Border> borderList,
                                            double[] contour)

Tracing polygons from contour lines and borders

参数:

S0 - input grid data

cLineList - contour lines

borderList - borders

contour - contour values

返回:

traced contour polygons

createCutContourPolygons

public static List<Polygon> createCutContourPolygons(List<PolyLine> LineList,
                                                     List<PointD> polyList,
                                                     Extent aBound,
                                                     double[] contour)

Create polygons from cutted contour lines

参数:

LineList - polylines

polyList - border point list

aBound - extent

contour - contour values

返回:

contour polygons

pointInPolygon

public static boolean pointInPolygon(List<PointD> poly,
                                     PointD aPoint)

Judge if a point is in a polygon

参数:

poly - polygon border

aPoint - point

返回:

if the point is in the polygon

pointInPolygon

public static boolean pointInPolygon(Polygon aPolygon,
                                     PointD aPoint)

Judge if a point is in a polygon

参数:

aPolygon - polygon

aPoint - point

返回:

if the point is in the polygon

clipPolylines

public static List<PolyLine> clipPolylines(List<PolyLine> polylines,
                                           List<PointD> clipPList)

Clip polylines with a border polygon

参数:

polylines - polyline list

clipPList - clipping border point list

返回:

clipped polylines

clipPolygons

public static List<Polygon> clipPolygons(List<Polygon> polygons,
                                         List<PointD> clipPList)

Clip polygons with a border polygon

参数:

polygons - polygon list

clipPList - clipping border point list

返回:

clipped polygons

tracingStreamline

public static List<PolyLine> tracingStreamline(double[][] U,
                                               double[][] V,
                                               double[] X,
                                               double[] Y,
                                               double UNDEF,
                                               int density)

Tracing stream lines

参数:

U - U component array

V - V component array

X - X coordinate array

Y - Y coordinate array

UNDEF - undefine data

density - stream line density

返回:

streamlines

isClockwise

public static boolean isClockwise(List<PointD> pointList)

Determine if the point list is clockwise

参数:

pointList - point list

返回:

is or not clockwise

getCrossPoint

public static PointF getCrossPoint(PointF aP1,
                                   PointF aP2,
                                   PointF bP1,
                                   PointF bP2)

Get cross point of two line segments

参数:

aP1 - point 1 of line a

aP2 - point 2 of line a

bP1 - point 1 of line b

bP2 - point 2 of line b

返回:

cross point