Package com.luciad.view.lightspeed.controller.navigation

Interface ILspScaleLevelProvider

All Known Implementing Classes:

TLspRasterBasedScaleLevelProvider

public interface ILspScaleLevelProvider

This interface provides a method to retrieve scale levels for a point in the view.

This interface is used by TLspZoomController and is used to snap to the provided scale levels when using ctrl-zoom.

Since:

2012.0

See Also:

• ALspViewXYZWorldTransformation.getScale()

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	ILspScaleLevelProvider.ScaleLevel	A scale level object.

Method Summary

Modifier and Type	Method	Description
ILspScaleLevelProvider.ScaleLevel[]	getScaleLevels(int aX, int aY, ILspView aView)	Returns the scale levels for the given view point.

Method Details

getScaleLevels

ILspScaleLevelProvider.ScaleLevel[] getScaleLevels(int aX,
 int aY,
 ILspView aView)

Returns the scale levels for the given view point. The scales should be in order, from smallest to largest. The scale levels can be based on the given view coordinate, for example the ideal scales for a raster under this view position.

Parameters:

aX - an x view coordinate

aY - an y view coordinate

aView - the view

Returns:

the scale levels for the given view point, in toolkit pixels/world unit