// **********************************************************************
//
// <copyright>
//
// BBN Technologies
// 10 Moulton Street
// Cambridge, MA 02138
// (617) 873-8000
//
// Copyright (C) BBNT Solutions LLC. All rights reserved.
//
// </copyright>
// **********************************************************************
//
// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/layer/vpf/CoordFloatString.java,v $
// $RCSfile: CoordFloatString.java,v $
// $Revision: 1.3.2.1 $
// $Date: 2004/10/14 18:27:20 $
// $Author: dietrick $
//
// **********************************************************************
package com.bbn.openmap.layer.vpf;
import java.io.EOFException;
import com.bbn.openmap.io.FormatException;
import com.bbn.openmap.io.BinaryFile;
/**
* Encapsulate the VPF Float Coordinate String primitive datatype.
*/
public class CoordFloatString {
/** the number of tuples */
public int tcount;
/** the number of elements in a tuple */
public int tsize;
/** where we store the data as x1,y1,z1,x2,y2,z2,... */
public float vals[];
/**
* Construct a CoordFloatString from a file input
*
* @param tuplecount the number of tuples to read from the input
* stream
* @param tuplesize the number of floats in the tuple
* @param input the input stream to read everything from
* @exception FormatException if we have IO errors or premature
* end-of-file
*/
public CoordFloatString(int tuplecount, int tuplesize, BinaryFile input)
throws FormatException {
tcount = tuplecount;
tsize = tuplesize;
int totallen = tcount * tsize;
vals = new float[totallen];
try {
input.readFloatArray(vals, 0, totallen);
} catch (EOFException e) {
throw new FormatException("CoordFloatString EOFException");
}
}
/**
* The maximum indexable tuple value
*
* @return the maximum valid tuple index
*/
public int maxIndex() {
return tcount;
}
/**
* A pretty formatter for the floatstring
*
* @return a pretty string of the tuple
*/
public String toString() {
boolean singleCoord = (vals.length == tsize);
StringBuffer retval = new StringBuffer(singleCoord ? "" : "CFS:");
if (!singleCoord) {
retval.append(tcount).append("[");
}
if (vals.length > 0) {
retval.append("(").append(vals[0]);
for (int j = 1; j < tsize; j++) {
retval.append(", ").append(vals[j]);
}
retval.append(")");
}
if (vals.length > tsize) {
retval.append(" ... (").append(vals[vals.length - tsize]);
for (int j = tsize - 1; j > 0; j--) {
retval.append(", ").append(vals[vals.length - j]);
}
retval.append(")");
}
if (!singleCoord) {
retval.append("]");
}
return retval.toString();
}
/**
* Get the first value of a tuple
*
* @param tuple the index of the tuple
* @return the first value of the tuple given by
* <code>tuple</code>
*/
public float getXasFloat(int tuple) {
return vals[tuple * tsize];
}
/**
* Get the second value of a tuple
*
* @param tuple the index of the tuple
* @return the second value of the tuple given by
* <code>tuple</code>
*/
public float getYasFloat(int tuple) {
return vals[tuple * tsize + 1];
}
/**
* Get the third value of a tuple
*
* @param tuple the index of the tuple
* @return the third value of the tuple given by
* <code>tuple</code>
*/
public float getZasFloat(int tuple) {
return vals[tuple * tsize + 2];
}
/**
* Get a tuple
*
* @param tuple the index of the tuple
* @return the tuple given by <code>tuple</code>
*/
public float[] getasFloatV(int tuple) {
float rv[] = new float[tsize];
for (int i = 0; i < tsize; i++) {
rv[i] = vals[tsize * tuple + i];
}
return rv;
}
/**
* Get a value in a tuple
*
* @param tuple the index of the tuple
* @param val the index of the value
* @return the tuple given by <code>tuple</code>
*/
public float getasFloat(int tuple, int val) {
return vals[tuple * tsize + val];
}
}