jwo.landserf.process
Class DemToTinThread

java.lang.Object
  java.lang.Thread
      jwo.landserf.process.LSThread
          jwo.landserf.process.DemToTinThread

All Implemented Interfaces:

JWInterruptionListener, Runnable

public class DemToTinThread

extends LSThread

Converts a DEM to TIN representation. Uses the 'greedy insertion' algorithm described by Garland & Heckbert (1995).

Version:

2.2, 5th December, 2004.

Author:

Jo Wood

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

DemToTinThread(GISFrame gisFrame, int numVertices, float tolRMSE, float tolError, boolean createErrorSurf)
Converts a DEM into TIN representation.

Method Summary

void	doProcessing() Convert the DEM stored as the primary raster in the GISFrame provided to the constructor into TIN representation.
RasterMap	getErrorMap() Retrieves the newly created raster map containing the TIN error map (if chosen).
VectorMap	getTIN() Retrieves the newly created vector map containing the TIN.

Methods inherited from class jwo.landserf.process.LSThread

checkStoppedThread, interruptionRequested, resetTimer, run, setErrorMessage, setMessage

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getContextClassLoader, getName, getPriority, getThreadGroup, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setName, setPriority, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

DemToTinThread

public DemToTinThread(GISFrame gisFrame,
                      int numVertices,
                      float tolRMSE,
                      float tolError,
                      boolean createErrorSurf)

Converts a DEM into TIN representation. TIN detail can be determined by any combination of numSamples, tolRMSE or tolError, where error is difference between TIN and DEM height at any point.

Parameters:

gisFrame - containing DEM and TIN.

numVertices - Maximum number of vertices.

tolRMSE - Maximum Root Mean Squared Error tolerated.

tolError - Maximum error tolerated.

createErrorSurf - Generates an error surface if true.

Method Detail

doProcessing

public void doProcessing()

Convert the DEM stored as the primary raster in the GISFrame provided to the constructor into TIN representation. The newly created vector map containing the TIN is added to the GISFrame provided to the constructor as a primary vector. This can be retrieved directly via this class's method getTIN(), or by calling gisFrame.getVector1();. If error map output has been chosen, the newly created raster map containing the error surface is added to the GISFrame provided to the constructor as a secondary raster. This can be retrieved directly via this class's method getErrorMap(), or by calling gisFrame.getRaster2();.

Note that this method will be called automatically if this is run as a threaded process (e.g. myDemToTinThread.start()). Alternatively it can be called directly as a non-threaded process.

Specified by:

doProcessing in class LSThread

See Also:

GISFrame

getErrorMap

public RasterMap getErrorMap()

Retrieves the newly created raster map containing the TIN error map (if chosen).

Returns:

New TIN error map, or null if error map not chosen or process yet to take place.

getTIN

public VectorMap getTIN()

Retrieves the newly created vector map containing the TIN.

Returns:

New TIN, or null if process yet to take place.