com.brackeen.javagamebook.graphics3D
Class ScanConverter

java.lang.Object
  com.brackeen.javagamebook.graphics3D.ScanConverter

Direct Known Subclasses:

SortedScanConverter

public class ScanConverter

extends java.lang.Object

The ScanConverter class converts a projected polygon into a series of horizontal scans for drawing.

Nested Class Summary

static class

ScanConverter.Scan A horizontal scan line.

Constructor Summary

ScanConverter(ViewWindow view)
Creates a new ScanConverter for the specified ViewWindow.

Method Summary

boolean	convert(Polygon3D polygon) Scan-converts a projected polygon.
int	getBottomBoundary() Gets the bottom boundary of the last scan-converted polygon.
ScanConverter.Scan	getScan(int y) Gets the scan line for the specified y value.
int	getTopBoundary() Gets the top boundary of the last scan-converted polygon.

Methods inherited from class java.lang.Object

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

Constructor Detail

ScanConverter

public ScanConverter(ViewWindow view)

Creates a new ScanConverter for the specified ViewWindow. The ViewWindow's properties can change in between scan conversions.

Method Detail

getTopBoundary

public int getTopBoundary()

Gets the top boundary of the last scan-converted polygon.

getBottomBoundary

public int getBottomBoundary()

Gets the bottom boundary of the last scan-converted polygon.

getScan

public ScanConverter.Scan getScan(int y)

Gets the scan line for the specified y value.

convert

public boolean convert(Polygon3D polygon)

Scan-converts a projected polygon. Returns true if the polygon is visible in the view window.