rlaramee
Class ASCIIfloatReader

java.lang.Object
  |
  +--rlaramee.ASCIIfloatReader

public class ASCIIfloatReader

extends java.lang.Object

Description: The ASCIIfloatReader reads the input file. The input file stores uniform or adaptive resolution data representing 3D volume data.
Handy numbers:
64 x 64 x 64 = 262,144

start date Tue 27 April 1999

Version:

1.0

Author:

Robert S Laramee

See Also:

MarchingCubesReader.java

Field Summary

private float[][]	data
private boolean	debug
private java.io.FileInputStream	input
private java.io.StreamTokenizer	stream
private int	xrows
private int	ycolumns
private int	zlayers

Constructor Summary

ASCIIfloatReader(int rows, int columns, int layers)
constructor

Method Summary

private int	closeFile() This closes the input file.
boolean	openFile(java.lang.String filename) This function opens the file specified by filename
private double	parseDouble(java.io.StreamTokenizer stream) This method parses an ASCII text floating point number.
void	parseFile() This method parses the data file.
private float	parseFloat(java.io.StreamTokenizer stream) This method parses an ASCII text floating point number
float[][]	run(java.lang.String filename) The run() function starts the ASCIIFloatReader.
private boolean	validRange(double value, double min, double max)
private boolean	validRange(double value, int min, int max)

Methods inherited from class java.lang.Object

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

Field Detail

input

private java.io.FileInputStream input

stream

private java.io.StreamTokenizer stream

data

private float[][] data

xrows

private int xrows

ycolumns

private int ycolumns

zlayers

private int zlayers

debug

private boolean debug

Constructor Detail

ASCIIfloatReader

public ASCIIfloatReader(int rows,
                        int columns,
                        int layers)

constructor

Parameters:

rows - the number of rows in the volume data

columns - the number of columns in the volume data

layers - the number of layers in the volume data

Method Detail

run

public float[][] run(java.lang.String filename)

The run() function starts the ASCIIFloatReader. The main idea is to:

   1  open the file
   2  parse the file
   3  FOR each float in the ASCII file
         add it to the data set
 

Parameters:

filename - the name of the file to open

Returns:

true if it works

openFile

public boolean openFile(java.lang.String filename)

This function opens the file specified by filename

Parameters:

filename - the name of file to open

parseFile

public void parseFile()
               throws java.io.IOException

This method parses the data file.

Throws:

java.io.IOException -

closeFile

private int closeFile()

This closes the input file. return [0|-1] on [success|failure]

parseFloat

private float parseFloat(java.io.StreamTokenizer stream)
                  throws java.io.IOException

This method parses an ASCII text floating point number

Parameters:

stream - a handle to the input stream

Returns:

float the floating point number parsed

Throws:

java.io.IOException -

parseDouble

private double parseDouble(java.io.StreamTokenizer stream)
                    throws java.io.IOException

This method parses an ASCII text floating point number. Although a floating point number in C requires a Java double for storage

Parameters:

stream - a handle to the input stream

Returns:

double the double number parsed

Throws:

java.io.IOException -

validRange

private boolean validRange(double value,
                           int min,
                           int max)

Parameters:

value - the value to validate

min - the minimum allowable value

max - the maximum allowable value

Returns:

true if the value is in the proper range

validRange

private boolean validRange(double value,
                           double min,
                           double max)

Parameters:

value - the value to validate

min - the minimum allowable value

max - maximum allowable value

Returns:

true if the value is in the proper range