LBitmapBase::Shear

#include "ltwrappr.h"

virtual L_INT LBitmapBase::Shear(nAngle, bHorizontal=TRUE, crFill=0)

L_INT nAngle;	/* angle of slant */
L_BOOL bHorizontal;	/* flag that indicates the direction of the shear*/
COLORREF crFill;	/* COLORREF value for the fill color */

Moves the corners of the class object's bitmap in the fashion of a parallelogram.

Parameter	Description
nAngle	The angle of slant. Positive values are for clockwise angles; negative values are for counterclockwise angles. The angle is expressed in hundredths of degrees, with a limit of 4500 (45 degrees).
bHorizontal	Flag that indicates the direction of the shear. Possible values are:
	Value	Meaning
	TRUE	Horizontal shear.
	FALSE	Vertical shear.
crFill	The COLORREF value that specifies the fill color. You can specify a COLORREF value, such as the return value of the Windows RGB macro, or you can use the PALETTEINDEX macro to specify a palette color.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

You specify an angle of slant, horizontal or vertical shear, and the fill color for the created space. The following is a horizontal example:

For an example, click here

The angle is expressed in hundredths of degrees, with a limit of 4500 (45 degrees).

To update a status bar or detect a user interrupt during execution of this function, refer to LBase::EnableStatusCallBack.

This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.

Required DLLs and Libraries

LTDIS
LTFIL

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

See Also

Functions:	LBitmapBase::Rotate, LBitmapBase::Flip, LBitmapBase::Reverse, Class Members
Topics:	Raster Image Functions: Doing Geometric Transformations
	Resizing Considerations
	Using Color Values in LEADTOOLS

Example

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
L_INT LBitmapBase__ShearExample()
{
   L_INT nRet;
   LBitmapBase MyBitmap;
   MyBitmap.SetFileName(MAKE_IMAGE_PATH(TEXT("image1.cmp"))); 
   nRet =MyBitmap.Load();
   if(nRet !=SUCCESS)
      return nRet;
   nRet =MyBitmap.Shear(2200,FALSE, RGB(220,120,220));
   if(nRet !=SUCCESS)
      return nRet;
   return SUCCESS;
}