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L_EmbossBitmap

Summary

Applies an emboss effect to a bitmap, letting you specify the depth and direction of the effect.

Syntax

#include "l_bitmap.h"

L_LTIMGEFX_API L_INT L_EmbossBitmap(pBitmap, uDirection, uDepth, uFlags)

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle referencing the target bitmap.

L_UINT uDirection

The direction of the apparent light source. Valid values are:

Direction	Value
EMBOSS_N	[0]
EMBOSS_NE	[1]
EMBOSS_E	[2]
EMBOSS_SE	[3]
EMBOSS_S	[4]
EMBOSS_SW	[5]
EMBOSS_W	[6]
EMBOSS_NW	[7]

L_UINT uDepth

The apparent depth of this three-dimensional effect. Valid values are 0 to 1000, with 500 as normal.

Returns

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

Comments

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

This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available in the Document and Medical Imaging toolkits.

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.

Emboss Function - Before

Emboss Function - After

View additional platform support for this Emboss function.

Required DLLs and Libraries

LTIMGEFX
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, Linux.

Example

For complete sample code, refer to the CHILD.C module of the DEMO example.
This example loads a bitmap and embosses it.

L_INT EmbossBitmapExample(L_VOID) 
{ 
   L_INT nRet; 
   BITMAPHANDLE LeadBitmap;   /* Bitmap handle to hold the loaded image. */ 
 
   /* Load the bitmap, keeping the bits per pixel of the file */ 
   nRet = L_LoadBitmap(MAKE_IMAGE_PATH(TEXT("NaturalFruits.jpg")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   /* Emboss with northeast direction and average depth */ 
   nRet = L_EmbossBitmap(&LeadBitmap, EMBOSS_NE, 500, 0); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   //free bitmap 
   if (LeadBitmap.Flags.Allocated) 
      L_FreeBitmap(&LeadBitmap); 
 
   return SUCCESS; 
}