uk.ac.starlink.ttools.plot2.layer

Class DrawingGlyph

java.lang.Object

uk.ac.starlink.ttools.plot2.layer.DrawingGlyph

All Implemented Interfaces:

Glyph

Direct Known Subclasses:

LineGlyph

public abstract class DrawingGlyph
extends Object
implements Glyph

Abstract Glyph subclass that uses a PixelDrawing.

Since:

7 Oct 2021

Author:

Mark Taylor

Constructor Summary

Constructors

Constructor and Description
DrawingGlyph()

Method Summary

Modifier and Type	Method and Description
Pixer	createPixer(Rectangle clip) Returns an iterator over pixel offsets for this glyph's shape, considered to be at the origin.
abstract PixelDrawing	createPixerFactory(Rectangle clip) Returns a drawing that can dispense pixers for this glyph.

Methods inherited from class java.lang.Object

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

Methods inherited from interface uk.ac.starlink.ttools.plot2.Glyph

paintGlyph

Constructor Detail

DrawingGlyph

public DrawingGlyph()

Method Detail

createPixerFactory

public abstract PixelDrawing createPixerFactory(Rectangle clip)

Returns a drawing that can dispense pixers for this glyph.

Parameters:

clip - clip shape

createPixer

public final Pixer createPixer(Rectangle clip)

Description copied from interface: Glyph

Returns an iterator over pixel offsets for this glyph's shape, considered to be at the origin. Typically this means the pixel collection is centred at that point. The returned iterator must not include any points outside of the given clip rectangle. A null return indicates that no pixels fall within the given clip.

Specified by:

createPixer in interface Glyph

Parameters:

clip - clip rectangle

Returns:

pixel iterator for the intersection of this glyph's shape and the given clip, or null for no pixels