com.geoway.mobile.geometry

类 DouglasPeuckerGeometrySimplifier

java.lang.Object

com.geoway.mobile.geometry.GeometrySimplifier

com.geoway.mobile.geometry.DouglasPeuckerGeometrySimplifier

public class DouglasPeuckerGeometrySimplifier
extends GeometrySimplifier

An implementation of Ramer-Douglas-Peucker algorithm for geometry simplification.
Simplifier works on lines and polygons.
Simplification is done in two passes - first pass uses fast Radial Distance vertex rejection,
second pass uses Ramer-Douglas-Peuckerworst algorithm (with worst case quadratic complexity).

字段概要

从类继承的字段 com.geoway.mobile.geometry.GeometrySimplifier

swigCMemOwn

构造器概要

构造器

构造器和说明
DouglasPeuckerGeometrySimplifier(float tolerance) Constructs a new simplifier, given tolerance.
DouglasPeuckerGeometrySimplifier(long cPtr, boolean cMemoryOwn)

方法概要

限定符和类型	方法和说明
void	delete()
protected void	finalize()
static long	getCPtr(DouglasPeuckerGeometrySimplifier obj)
Geometry	simplify(Geometry geometry, float scale) Perform the simplification of the given geometry, given relative scale.
static DouglasPeuckerGeometrySimplifier	swigCreatePolymorphicInstance(long cPtr, boolean cMemoryOwn) Creates a polymorphic instance of the given native object.
java.lang.String	swigGetClassName() Returns the actual class name of this object.
java.lang.Object	swigGetDirectorObject() Returns the connected director object.

从类继承的方法 com.geoway.mobile.geometry.GeometrySimplifier

equals, getCPtr, hashCode

从类继承的方法 java.lang.Object

clone, getClass, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

DouglasPeuckerGeometrySimplifier

public DouglasPeuckerGeometrySimplifier(long cPtr,
                                        boolean cMemoryOwn)

DouglasPeuckerGeometrySimplifier

public DouglasPeuckerGeometrySimplifier(float tolerance)

Constructs a new simplifier, given tolerance.

参数:

tolerance - The maximum error for simplification. The tolerance value gives maximum error in pixels.

方法详细资料

getCPtr

public static long getCPtr(DouglasPeuckerGeometrySimplifier obj)

finalize

protected void finalize()

覆盖:

finalize 在类中 GeometrySimplifier

delete

public void delete()

覆盖:

delete 在类中 GeometrySimplifier

swigCreatePolymorphicInstance

public static DouglasPeuckerGeometrySimplifier swigCreatePolymorphicInstance(long cPtr,
                                                                             boolean cMemoryOwn)

Creates a polymorphic instance of the given native object. This is used internally by the SDK.

参数:

cPtr - The native pointer of the instance.

cMemoryOwn - The ownership flag.

返回:

The created instance.

simplify

public Geometry simplify(Geometry geometry,
                         float scale)

从类复制的说明: GeometrySimplifier

Perform the simplification of the given geometry, given relative scale.

覆盖:

simplify 在类中 GeometrySimplifier

参数:

geometry - The geometry to simplify.

scale - Relative scale for simplification, this is proportional to 2^zoom.

返回:

The simplified geometry. If simplification failed, original geometry may be returned.
Null pointer may be returned if geometry should be discarded.

swigGetClassName

public java.lang.String swigGetClassName()

Returns the actual class name of this object. This is used internally by the SDK.

覆盖:

swigGetClassName 在类中 GeometrySimplifier

返回:

The class name of this object.

swigGetDirectorObject

public java.lang.Object swigGetDirectorObject()

Returns the connected director object. This is used internally by the SDK.

覆盖:

swigGetDirectorObject 在类中 GeometrySimplifier

返回:

The connected director object or null if director is not connected.