Description

Extracts a band or set of bands from the source raster. The Extract Format property specifies the bands and the order of the bands that will be extracted.

Public Properties

ExtractFormat

Gets or sets the Raster Format containing the bands and the order of the bands that will be extracted.

Example

Extract the alpha component from an image

[C#] Copy Code

IAgStkGraphicsSceneManager manager = ((IAgScenario)root.CurrentScenario).SceneManager; 

IAgStkGraphicsScreenOverlayCollectionBase overlayManager = (IAgStkGraphicsScreenOverlayCollectionBase)manager.ScreenOverlays.Overlays; 

// 

// The URI can be a file path, http, https, or ftp location 

// 

IAgStkGraphicsRaster image = manager.Initializers.Raster.InitializeWithStringUri( 

    imageFile); 

 

// 

// Extract the alpha channel from the image 

// 

IAgStkGraphicsBandExtractFilter channelExtract = manager.Initializers.BandExtractFilter.InitializeWithBand(AgEStkGraphicsRasterBand.eStkGraphicsRasterBandAlpha); 

image.ApplyInPlace((IAgStkGraphicsRasterFilter)channelExtract); 

 

IAgStkGraphicsRendererTexture2D texture = manager.Textures.FromRaster(image); 

 

// 

// Display the image using a screen overlay 

// 

IAgStkGraphicsTextureScreenOverlay overlay = manager.Initializers.TextureScreenOverlay.Initialize(); 

((IAgStkGraphicsOverlay)overlay).Width = 0.2; 

((IAgStkGraphicsOverlay)overlay).WidthUnit = AgEStkGraphicsScreenOverlayUnit.eStkGraphicsScreenOverlayUnitFraction; 

((IAgStkGraphicsOverlay)overlay).Height = 0.2; 

((IAgStkGraphicsOverlay)overlay).HeightUnit = AgEStkGraphicsScreenOverlayUnit.eStkGraphicsScreenOverlayUnitFraction; 

((IAgStkGraphicsOverlay)overlay).Origin = AgEStkGraphicsScreenOverlayOrigin.eStkGraphicsScreenOverlayOriginTopRight; 

overlay.Texture = texture; 

 

overlayManager.Add((IAgStkGraphicsScreenOverlay)overlay);

Extract the alpha component from an image

[Visual Basic .NET] Copy Code

Dim manager As IAgStkGraphicsSceneManager = DirectCast(root.CurrentScenario, IAgScenario).SceneManager
Dim overlayManager As IAgStkGraphicsScreenOverlayCollectionBase = DirectCast(manager.ScreenOverlays.Overlays, IAgStkGraphicsScreenOverlayCollectionBase)
'
' The URI can be a file path, http, https, or ftp location
'
Dim image As IAgStkGraphicsRaster = manager.Initializers.Raster.InitializeWithStringUri( _
     imageFile)

'
' Extract the alpha channel from the image
'
Dim channelExtract As IAgStkGraphicsBandExtractFilter = manager.Initializers.BandExtractFilter.InitializeWithBand(AgEStkGraphicsRasterBand.eStkGraphicsRasterBandAlpha)
 image.ApplyInPlace(DirectCast(channelExtract, IAgStkGraphicsRasterFilter))

Dim texture As IAgStkGraphicsRendererTexture2D = manager.Textures.FromRaster(image)

Dim overlay As IAgStkGraphicsTextureScreenOverlay = manager.Initializers.TextureScreenOverlay.Initialize()
 DirectCast(overlay, IAgStkGraphicsOverlay).Width = 0.2
 DirectCast(overlay, IAgStkGraphicsOverlay).WidthUnit = AgEStkGraphicsScreenOverlayUnit.eStkGraphicsScreenOverlayUnitFraction
 DirectCast(overlay, IAgStkGraphicsOverlay).Height = 0.2
 DirectCast(overlay, IAgStkGraphicsOverlay).HeightUnit = AgEStkGraphicsScreenOverlayUnit.eStkGraphicsScreenOverlayUnitFraction
 overlay.Texture = texture
 DirectCast(overlay, IAgStkGraphicsOverlay).Origin = AgEStkGraphicsScreenOverlayOrigin.eStkGraphicsScreenOverlayOriginTopRight

 overlayManager.Add(DirectCast(overlay, IAgStkGraphicsScreenOverlay))

CoClasses that Implement IAgStkGraphicsBandExtractFilter

Name
AgStkGraphicsBandExtractFilter

AGI STK Graphics 11	Send comments on this topic.
IAgStkGraphicsBandExtractFilter Interface