LBitmap::Vignette

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#include "ltwrappr.h"

L_INT LBitmap::Vignette(pVignetteInfo, uFlags = 0)

pVIGNETTEINFO pVignetteInfo;	/* pointer to a structure */
L_UINT32 uFlags;	/* flags*/

Draws a specified shape and feathers it to the bitmap.

Parameter	Description
pVignetteInfo	Pointer to the VIGNETTEINFO structure that contains information about the vignette effect.
uFlags	Reserved for future use. Must be 0.

Returns

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

Comments

This function can be used to draw a circle, ellipse, rectangle or square to create a vignette shape and then a color is feathered to the bitmap, filling either the inside or the outside of the vignette shape.

For an example, click here

This function can process the whole image or a region of the image. If a bitmap has a region, the effect is applied only to the region.

Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.

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.

This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.

Required DLLs and Libraries

LTIMGSFX

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::Underlay, LBitmapBase::Combine, LBitmapBase::FeatherAlphaBlend, LBitmapBase::CreateFadedMask, LBitmap::TextureAlphaBlend
Topics:	Raster Image Functions: Combining Images
	Applying Artistic Effects
	Raster Image Functions: Artistic Effects
	Raster Image Functions: Functions Where the Region Preempts the Bitmap

Example

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
L_INT LBitmap__VignetteExample(LBitmapWindow m_LBitmapWnd)
{
   L_INT nRet;
   VIGNETTEINFO VignetteInfo;   /* Structure which stores the required parameters*/
   /*Fill the structures with the required parameters: Use an elliptical Vignette shape, perform feathering */
   /* inside the vignette object, center the ellipse, use a fading color of blue*/
   VignetteInfo.uStructSize = sizeof(VIGNETTEINFO);
   VignetteInfo.crVigColor = RGB(0,0,255);
   VignetteInfo.nFading = 50;
   VignetteInfo.uFlags = VIG_ELLIPSE | VIG_FILLIN;
   VignetteInfo.uFadingRate = 100;
   VignetteInfo.uHeight = m_LBitmapWnd.GetHeight()/ 2;
   VignetteInfo.uWidth = m_LBitmapWnd.GetWidth()/ 2;
   VignetteInfo.ptCenter.x = m_LBitmapWnd.GetWidth()/ 2;
   VignetteInfo.ptCenter.y = m_LBitmapWnd.GetHeight()/ 2;  
   LBitmap LeadBitmap;
   nRet =LeadBitmap.Load(MAKE_IMAGE_PATH(TEXT("IMAGE1.CMP")), 0,ORDER_BGR);
   if(nRet !=SUCCESS)
      return nRet;
   nRet =LeadBitmap.Vignette(&VignetteInfo);
   if(nRet !=SUCCESS)
      return nRet;
   return SUCCESS;
}