org.tinfour.common

Class TriangleCount

java.lang.Object

org.tinfour.common.TriangleCount

public class TriangleCount
extends Object

Provides descriptive data for a Triangulated Irregular Network (TIN).

Constructor Summary

Constructors

Constructor and Description
TriangleCount() Create an instance for tabulating a survey of the triangles which may or may not be members of a TIN.
TriangleCount(IIncrementalTin tin) A constructor that performs a survey of the TIN to gather statistics about the triangles that comprise it.

Method Summary

Modifier and Type	Method and Description
double	getAreaMax() Gets the maximum area of the triangles in the TIN.
double	getAreaMean() Get the mean area of the triangles in the TIN.
double	getAreaMin() Gets the minimum area of the triangles in the TIN.
double	getAreaStandardDeviation() Gets the standard deviation of the triangles in the TIN.
double	getAreaSum() Gets the sum of the area of all triangles in the TIN.
int	getCount() Get the number of triangles in the TIN.
void	tabulateTriangle(Vertex vA, Vertex vB, Vertex vC) Compute area for the triangle specified by the vertex arguments and add it to the triangle count and area summations.

Methods inherited from class java.lang.Object

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

Constructor Detail

TriangleCount

public TriangleCount()

Create an instance for tabulating a survey of the triangles which may or may not be members of a TIN.

TriangleCount

public TriangleCount(IIncrementalTin tin)

A constructor that performs a survey of the TIN to gather statistics about the triangles that comprise it.

Parameters:

tin - a valid instance of an incremental tin

Method Detail

tabulateTriangle

public final void tabulateTriangle(Vertex vA,
                                   Vertex vB,
                                   Vertex vC)

Compute area for the triangle specified by the vertex arguments and add it to the triangle count and area summations.

Parameters:

vA - the initial vertex, given in counterclockwise order

vB - the second vertex, given in counterclockwise order

vC - the third vertex, given in counterclockwise order

getCount

public int getCount()

Get the number of triangles in the TIN.

Returns:

a integer value of 1 or more (zero if TIN is undefined).

getAreaSum

public double getAreaSum()

Gets the sum of the area of all triangles in the TIN.

Returns:

if the triangle count is greater than zero, a positive floating point value

getAreaMean

public double getAreaMean()

Get the mean area of the triangles in the TIN.

Returns:

if the triangle count is greater than zero, a positive floating point value

getAreaStandardDeviation

public double getAreaStandardDeviation()

Gets the standard deviation of the triangles in the TIN.

Returns:

if the triangle count is greater than one, a positive floating point value

getAreaMin

public double getAreaMin()

Gets the minimum area of the triangles in the TIN.

Returns:

if the triangle count is greater than zero, a positive floating point value

getAreaMax

public double getAreaMax()

Gets the maximum area of the triangles in the TIN.

Returns:

if the triangle count is greater than zero, a positive floating point value