Rotate(ImGearPage,Double,ImGearRotationModes,ImGearPixel) Method

In This Topic

Rotates an image.

Syntax

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Overloads Shared Sub Rotate( _
   ByVal page As ImGearPage, _
   ByVal angle As Double, _
   ByVal mode As ImGearRotationModes, _
   ByVal background As ImGearPixel _
)

'Usage
 
Dim page As ImGearPage
Dim angle As Double
Dim mode As ImGearRotationModes
Dim background As ImGearPixel
 
ImGearProcessing.Rotate(page, angle, mode, background)

public static void Rotate( 
   ImGearPage page,
   double angle,
   ImGearRotationModes mode,
   ImGearPixel background
)

public: static void Rotate( 
   ImGearPage* page,
   double angle,
   ImGearRotationModes mode,
   ImGearPixel* background
)

public:
static void Rotate( 
   ImGearPage^ page,
   double angle,
   ImGearRotationModes mode,
   ImGearPixel^ background
)

Parameters

page: Image to rotate.
angle: Rotation angle in degrees.
mode: Rotation mode. ImGearRotationModes.CLIP means that the image size is not changed during rotation and the part of picture out of image boundary is cut. ImGearRotationModes.EXPAND changes the image size according to the new picture boundary.
background: Background color to fill the out of picture area. Can be null (Nothing in VB NET).

Remarks

This method processes all channels of the image as well as image's ROI, if it exists.

Background should be in the same color space as the Page, including Alpha and Extra channels. Background must have the same channel count and bit depth as a DIB?s color space.

Use CanApplyRotate method to check whether the operation can be performed.

Example

C#
Visual Basic

// Find the skew angle of an image.
double angle = ImGearRasterProcessing.FindSkewAngle(igRasterPage);

// Rotate image by the found skew angle.
ImGearProcessing.Rotate(igRasterPage, angle, ImGearRotationModes.CLIP, null);

' Find the skew angle of an image.
Dim angle As Double = ImGearRasterProcessing.FindSkewAngle(igRasterPage)

' Rotate image by the found skew angle.
ImGearProcessing.Rotate(igRasterPage, angle, ImGearRotationModes.CLIP, Nothing)

Reference

ImGearProcessing Class
ImGearProcessing Members
Overload List
ImGearPage Class
ImGearRotationModes Enumeration
ImGearPixel Class

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