com.luciad.tea.hypsometry

Terrain Analysis EngineClass TLcdHypsometricNormalizedNormalProvider

java.lang.Object

com.luciad.tea.hypsometry.TLcdHypsometricNormalizedNormalProvider

All Implemented Interfaces:

ILcdHypsometricNormalProvider

public class TLcdHypsometricNormalizedNormalProvider
extends Object
implements ILcdHypsometricNormalProvider

This ILcdHypsometricNormalProvider delegates computing normals to a given ILcdHypsometricNormalProvider, normalizing the resulting vector to a unit length.

Constructor Summary

Constructors

Constructor and Description
TLcdHypsometricNormalizedNormalProvider(ILcdHypsometricNormalProvider aHypsometricNormalProvider) Creates a new TLcdHypsometricNormalizedNormalProvider that will delegate the actual normal computations to the given normal provider.

Method Summary

Modifier and Type	Method and Description
void	computeNormal(ILcdMatrixView aMatrixView, int aX, int aY, double aElevationScale, double[] aNormalSFCT) Computes the normal at the given point.
Rectangle	getFootPrint() Returns the foot print of this provider.
ILcdHypsometricNormalProvider	getHypsometricNormalProvider() Returns the normal provider that actually computes the normals.

Methods inherited from class java.lang.Object

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

Constructor Detail

TLcdHypsometricNormalizedNormalProvider

public TLcdHypsometricNormalizedNormalProvider(ILcdHypsometricNormalProvider aHypsometricNormalProvider)

Creates a new TLcdHypsometricNormalizedNormalProvider that will delegate the actual normal computations to the given normal provider.

Parameters:

aHypsometricNormalProvider - the normal provider to delegate to.

Method Detail

getHypsometricNormalProvider

public ILcdHypsometricNormalProvider getHypsometricNormalProvider()

Returns the normal provider that actually computes the normals.

Returns:

the normal provider.

getFootPrint

public Rectangle getFootPrint()

Description copied from interface: ILcdHypsometricNormalProvider

Returns the foot print of this provider. For instance, if the normal at each point is computed based on the surrounding 3x3 matrix values, the foot print is the rectangle (-1, -1, 3, 3).

Specified by:

getFootPrint in interface ILcdHypsometricNormalProvider

Returns:

the foot print of this provider.

computeNormal

public void computeNormal(ILcdMatrixView aMatrixView,
                          int aX,
                          int aY,
                          double aElevationScale,
                          double[] aNormalSFCT)

Description copied from interface: ILcdHypsometricNormalProvider

Computes the normal at the given point. For reasons of efficiency, the normals are not necessarily normalized yet. It is up to the user to normalize them if necessary. The components of the normal may be NaN if they can't be computed, for instance if not all required elevations are known.

Specified by:

computeNormal in interface ILcdHypsometricNormalProvider

Parameters:

aMatrixView - the matrix containing elevation values.

aX - the x ordinate in the matrix.

aY - the y ordinate in the matrix.

aElevationScale - the scale of the elevation values in the tiles, expressed in matrix distance units per tile elevation unit.

aNormalSFCT - an array of 3 doubles to store the computed normal.