jme3utilities.math

Class DistinctVectorValues

java.lang.Object

jme3utilities.math.DistinctVectorValues

public class DistinctVectorValues
extends java.lang.Object

Analyze a FloatBuffer to identify all of its distinct Vector3f values. Immutable.

Constructor Summary

Constructors

Constructor and Description
DistinctVectorValues(java.nio.FloatBuffer buffer, int startPosition, int endPosition) Analyze the specified FloatBuffer range using exact vector comparisons (without distinguishing 0 from -0) and instantiate the results.

Method Summary

Modifier and Type	Method and Description
int	countDistinct() Count the number of distinct vectors in the original buffer range.
int	findVvid(int vectorIndex) Find the ID of the indexed vector in the original buffer range.

Methods inherited from class java.lang.Object

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

Constructor Detail

DistinctVectorValues

public DistinctVectorValues(java.nio.FloatBuffer buffer,
                            int startPosition,
                            int endPosition)

Analyze the specified FloatBuffer range using exact vector comparisons (without distinguishing 0 from -0) and instantiate the results.

Parameters:

buffer - the buffer to analyze (not null, unaffected)

startPosition - the buffer position at which the vectors start (≥0, ≤endPosition, typically 0)

endPosition - the buffer position at which the vectors end (≥startPosition, ≤capacity)

Method Detail

countDistinct

public int countDistinct()

Count the number of distinct vectors in the original buffer range.

Returns:

the count (≥0)

findVvid

public int findVvid(int vectorIndex)

Find the ID of the indexed vector in the original buffer range.

Parameters:

vectorIndex - the index of the vector in the original buffer (≥0) which is typically a vertex ID

Returns:

an ID (≥0) or -1 if not found