com.ctreber.acearth.scanbit

Class BitGeneratorMapDefault

java.lang.Object

com.ctreber.acearth.scanbit.ScanBitGenerator

com.ctreber.acearth.scanbit.BitGeneratorMap

com.ctreber.acearth.scanbit.BitGeneratorMapDefault

public class BitGeneratorMapDefault
extends BitGeneratorMap

Map scanner for mercator and cylindrical projections.

© 2002 Christian Treber, ct@ctreber.com

Author:

Christian Treber, ct@ctreber.com

Field Summary

Fields inherited from class com.ctreber.acearth.scanbit.BitGeneratorMap

PixTypeGridLand, PixTypeGridWater, PixTypeLand, PixTypeSpace, PixTypeStar, PixTypeWater

Fields inherited from class com.ctreber.acearth.scanbit.ScanBitGenerator

fScanBitsArray

Constructor Summary

Constructors

Constructor and Description
BitGeneratorMapDefault(Projection pProjection)

Method Summary

Modifier and Type	Method and Description
protected Comparator	getEdgeXingComparator()
protected void	handleCrossings(com.ctreber.acearth.scanbit.ScanBuf pScanBuf, EdgeCrossing[] xings) Side effect: Creates ScanBuf lines.
protected com.ctreber.acearth.scanbit.ScanBuf	scanOutline() Seems to: walk along outline of projected area.
protected void	scanPolygon(com.ctreber.acearth.scanbit.ScanBuf pScanBuf, Point3D[] pPoints3D, Point2D[] pPoints2D, int pIndex) Look at 2 neighboring points in polygon and find edge crossings - edge of the globe?! Edge of image?

Methods inherited from class com.ctreber.acearth.scanbit.BitGeneratorMap

addEdgeXing, generateScanBits, setMapData

Methods inherited from class com.ctreber.acearth.scanbit.ScanBitGenerator

getScanBits, setImageHeight, setImageWidth

Methods inherited from class java.lang.Object

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

Constructor Detail

BitGeneratorMapDefault

public BitGeneratorMapDefault(Projection pProjection)

Method Detail

getEdgeXingComparator

protected Comparator getEdgeXingComparator()

Specified by:

getEdgeXingComparator in class BitGeneratorMap

scanOutline

protected com.ctreber.acearth.scanbit.ScanBuf scanOutline()

Seems to: walk along outline of projected area.

Specified by:

scanOutline in class BitGeneratorMap

scanPolygon

protected void scanPolygon(com.ctreber.acearth.scanbit.ScanBuf pScanBuf,
                           Point3D[] pPoints3D,
                           Point2D[] pPoints2D,
                           int pIndex)

Look at 2 neighboring points in polygon and find edge crossings - edge of the globe?! Edge of image?

Specified by:

scanPolygon in class BitGeneratorMap

handleCrossings

protected void handleCrossings(com.ctreber.acearth.scanbit.ScanBuf pScanBuf,
                               EdgeCrossing[] xings)

Side effect: Creates ScanBuf lines.

Specified by:

handleCrossings in class BitGeneratorMap