Marblecore Imaging Library Documentation

Documentation Introduction
Documentation / Marblecore Imaging / Methods / Crop

Crop method

Performs a crop on the current image.

Syntax

Boolean Crop(nLeft As Number, nTop As Number, nWidth As Number, nHeight As Number)

Return value

Returns true if the function succeeded.

Parameters

ParameterTypeRequiredDescription
nLeftNumberYesSpecifies the left position of the cropped rectangle.
nTopNumberYesSpecifies the top position of the cropped rectangle.
nWidthNumberNoOptional parameter containing the width of the cropped rectangle.
nHeightNumberNoOptional parameter containing the height of the cropped rectangle.

Example

The example below shows the effect of this method and how to use it. You can slide the marker in the before/after picture to see the difference. If you take a look at the example code, assume there is a reference to the Marblecore Imaging object with the name 'MarblecoreImaging'. Transparent parts of the image are displayed using a checkerboard pattern.
 
before
after
 
1 // Load the specified image in memory
2 MarblecoreImaging.LoadFromFile("example-crop-before.jpg");
3 
4 // Execute the operation
5 MarblecoreImaging.Crop(200, 100, 400, 300);
6 
7 // Save the modified image to the specified file
8 MarblecoreImaging.SaveToFile("example-crop-after.jpg");

Category

Transformations

See also

Clear | Expand | FlipHorizontal | FlipVertical | Opacity | Resize | Rotate | RotateLeft | RotateRight | RoundEdges | Shear | Shrink | Skew | Straighten | Thumbnail