Package org.hortonmachine.gears.io.las.core.laszip4j

Class LaszipReader

java.lang.Object

org.hortonmachine.gears.io.las.core.Las

org.hortonmachine.gears.io.las.core.ALasReader

org.hortonmachine.gears.io.las.core.laszip4j.LaszipReader

All Implemented Interfaces:

AutoCloseable

public class LaszipReader
extends ALasReader

Las reader based on laszip4j.

Author:

Andrea Antonello (www.hydrologis.com)

Constructor Summary

Constructors

Constructor	Description
LaszipReader(File lasFile, org.opengis.referencing.crs.CoordinateReferenceSystem crs)

Method Summary

Modifier and Type	Method	Description
void	close()	Close the las data source and free resources.
ILasHeader	getHeader()	Get the las header.
File	getLasFile()	Get a reference to the las file.
LasRecord	getNextPoint()	Read the next record into a LasRecord object.
LasRecord	getPointAt(long pointNumber)	Reads a dot at a given point position.
LasRecord	getPointAtAddress(long address)	Reads a dot at a given address.
boolean	hasNextPoint()	Check if there are still data available.
void	open()	Open the las data source.
double[]	readNextLasXYZAddress()	Reads the position and the record address in the file of the next point.
void	rewind()	Rewind the iterator to start from scratch.
void	seek(long pointNumber)	Move to a given point in the file.
void	setOverrideGpsTimeType(int type)	Overrides the time type.

Methods inherited from class org.hortonmachine.gears.io.las.core.Las

getReader, getReader, getWriter

Methods inherited from class java.lang.Object

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

Constructor Detail

LaszipReader

public LaszipReader(File lasFile,
                    org.opengis.referencing.crs.CoordinateReferenceSystem crs)
             throws Exception

Throws:

Exception

Method Detail

getLasFile

public File getLasFile()

Description copied from class: ALasReader

Get a reference to the las file.

Specified by:

getLasFile in class ALasReader

Returns:

the las file.

open

public void open()
          throws Exception

Description copied from class: ALasReader

Open the las data source.

Specified by:

open in class ALasReader

Throws:

Exception

close

public void close()
           throws Exception

Description copied from class: ALasReader

Close the las data source and free resources.

Specified by:

close in interface AutoCloseable

Specified by:

close in class ALasReader

Throws:

Exception

setOverrideGpsTimeType

public void setOverrideGpsTimeType(int type)

Description copied from class: ALasReader

Overrides the time type.

The time type is sometimes found set wrong by certain softwares. This gives the possibility to override it and allow for proper time conversion.

Specified by:

setOverrideGpsTimeType in class ALasReader

Parameters:

type - the type to set.

hasNextPoint

public boolean hasNextPoint()
                     throws IOException

Description copied from class: ALasReader

Check if there are still data available.

Specified by:

hasNextPoint in class ALasReader

Returns:

true if there are still data to read.

Throws:

IOException

getNextPoint

public LasRecord getNextPoint()
                       throws IOException

Description copied from class: ALasReader

Read the next record into a LasRecord object.

Specified by:

getNextPoint in class ALasReader

Returns:

the read object or null if none available.

Throws:

IOException

getPointAtAddress

public LasRecord getPointAtAddress(long address)
                            throws IOException

Description copied from class: ALasReader

Reads a dot at a given address.

Specified by:

getPointAtAddress in class ALasReader

Parameters:

address - the file address of the record to read.

Returns:

the read record.

Throws:

IOException

getPointAt

public LasRecord getPointAt(long pointNumber)
                     throws IOException

Description copied from class: ALasReader

Reads a dot at a given point position.

Specified by:

getPointAt in class ALasReader

Parameters:

pointNumber - the point position.

Returns:

the read record.

Throws:

IOException

readNextLasXYZAddress

public double[] readNextLasXYZAddress()
                               throws IOException

Description copied from class: ALasReader

Reads the position and the record address in the file of the next point.

Specified by:

readNextLasXYZAddress in class ALasReader

Returns:

the array containing [x, y, z, address].

Throws:

IOException

seek

public void seek(long pointNumber)
          throws IOException

Description copied from class: ALasReader

Move to a given point in the file.

The position starts with 0 at the first point position.

Note that not ALasReader.hasNextPoint() can be called after seek, ALasReader.getNextPoint() must be called directly instead.

Specified by:

seek in class ALasReader

Parameters:

pointNumber - the number of records to skip.

Throws:

IOException

getHeader

public ILasHeader getHeader()

Description copied from class: ALasReader

Get the las header.

Specified by:

getHeader in class ALasReader

Returns:

the las header.

rewind

public void rewind()
            throws IOException

Description copied from class: ALasReader

Rewind the iterator to start from scratch.

Specified by:

rewind in class ALasReader

Throws:

IOException