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CombineCommand Constructor(RasterImage,LeadRect,LeadPoint,CombineCommandFlags)

Initializes a new CombineCommand class object with explicit parameters.
- (instancetype)initWithSourceImage:(nullable LTRasterImage *)sourceImage destinationRectangle:(LeadRect)destinationRectangle sourcePoint:(LeadPoint)sourcePoint flags:(LTCombineCommandFlags)flags NS_DESIGNATED_INITIALIZER; 
public CombineCommand( 
   RasterImage sourceImage,  
   LeadRect destinationRectangle,  
   LeadPoint sourcePoint,  
   int flags 


RasterImage object that references the source image, which is combined with the destination image.

LeadRect structure that contains the destination rectangle.

LeadPoint structure that contains the origin of the source rectangle. The width and height of the source rectangle are the same as the destination rectangle.

Flags from seven groups that define treatment of the source, treatment of the destination, the operation to use when combining the data, treatment of the resulting image, and the color plane for the destination, source and resulting images. The flags apply only to the defined rectangles (not necessarily the whole image). You can use a bitwise OR ( ¦ ) to specify one flag from each group.

In order to speed up widely used image processing filters in LEADTOOLS, the grayscale value (master channel) of a colored image is calculated using the following formulas:

             #define CalcGrayValue(r, g, b) ((L_UCHAR)(((L_UCHAR) (((2 * (L_UINT) (r)) + (5 * (L_UINT) (g)) + (L_UINT) (b) + 4) / 8)))) 
             #define CalcGrayValue16(r, g, b) ((L_UINT16) (((2 * (L_UINT32) (r)) + (5 * (L_UINT32) (g)) + (L_UINT32) (b) + 4) / 8)) 
             #define CalcGrayValue32(r, g, b) ((L_UINT32) (((2 * (L_UINT32) (r)) + (5 * (L_UINT32) (g)) + (L_UINT32) (b) + 4) / 8)) 
__init__(self,sourceImage,destinationRectangle,sourcePoint,flags) # Overloaded constructor 

Run the CombineCommand on an image.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
public void CombineConstructorExample() 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\Image3.cmp")); 
   // Prepare the command 
   RasterImage tempImage = image.Clone(); 
   // the rectangle that represents the affected area of the destination image. 
   LeadRect rect = new LeadRect(image.Width / 8, image.Height / 8, image.Width, image.Height); 
   // The source point, which represents the source point of the source image which to be combined. 
   LeadPoint srcPoint = new LeadPoint(0, 0); 
   CombineCommand command = new CombineCommand(tempImage, rect, srcPoint, CombineCommandFlags.OperationAnd | CombineCommandFlags.Destination1 | CombineCommandFlags.SourceRed | CombineCommandFlags.DestinationRed | CombineCommandFlags.ResultBlue); 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
static class LEAD_VARS 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 

Target Platforms

Help Version 22.0.2023.3.31
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Leadtools.ImageProcessing.Effects Assembly

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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.