L_DiffuseGlowBitmap
#include "l_bitmap.h"
L_LTIMGSFX_API L_INT L_DiffuseGlowBitmap(pBitmap, nGlowAmount, uClearAmount, uSpreadAmount, uWhiteNoise, crGlowColor)
pBITMAPHANDLE pBitmap; |
/* pointer to the bitmap handle */ |
L_INT nGlowAmount; |
/* glow intensity */ |
L_UINT uClearAmount; |
/* clear amount */ |
L_UINT uSpreadAmount; |
/* glow spread amount */ |
L_UINT uWhiteNoise; |
/* amount of noise */ |
COLORREF crGlowColor; |
/* glow color */ |
Adds a colored glow to a bitmap's light or dark areas, making these areas shine with a neon glow.
Parameter |
Description |
pBitmap |
Pointer to the bitmap handle that references the bitmap on which to apply the effect. |
nGlowAmount |
Glow intensity, expressed in tenths of a percent. Possible values range from -1000 1000. Use positive values to add glow to the brighter regions of the image, and negative values to add glow to the darker regions of the image. |
uClearAmount |
Value that represents how deeply the glow will penetrate into the non-glowing areas, expressed in tenths of a percent. Possible values range from 0 1000. A value of 0 indicates total glow diffusion, whereas a value of 1000 indicates the glow does not penetrate into any of the non-glowing areas. |
uSpreadAmount |
Value that represents the amount of blur in the glow diffusion, from 0 to 100 pixels. Possible values range from 0 1000. A value of 0 indicates none of the glow is diffused, whereas a value of 1000 indicates maximum diffusion. |
uWhiteNoise |
Percent of the bitmap to be covered with added pixels, expressed in tenths of a percent. The pixels will be added randomly. Possible values range from 0 1000. |
crGlowColor |
The COLORREF value that specifies the glow 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
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 filter adds pixels randomly to the bitmap. A glow is added based on a combination of the pixel colors and the glow color.
If the bitmap has a region, the effect will be applied on the region only.
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 only in the Document/Medical toolkits.
To update a status bar or detect a user interrupt during execution of this function, refer to L_SetStatusCallback.
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
Windows 2000 / XP/Vista.
See Also
Example
L_INT DiffuseGlowBitmapExample(L_VOID) { L_INT nRet; BITMAPHANDLE LeadBitmap; /* Bitmap handle for the image */ /* Load a bitmap at its own bits per pixel */ nRet = L_LoadBitmap (TEXT("C:\\Program Files\\LEAD Technologies\\LEADTOOLS 15\\Images\\IMAGE3.CMP"), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL); if(nRet !=SUCCESS) return nRet; /* Add Diffuse Glow to the image*/ nRet = L_DiffuseGlowBitmap(&LeadBitmap, 500, 500, 200, 50, RGB(255, 255, 255)); if(nRet !=SUCCESS) return nRet; nRet = L_SaveBitmap(TEXT("C:\\Program Files\\LEAD Technologies\\LEADTOOLS 15\\Images\\Result.BMP"), &LeadBitmap, FILE_BMP, 24, 0, NULL); if(nRet !=SUCCESS) return nRet; //free bitmap if(LeadBitmap.Flags.Allocated) L_FreeBitmap(&LeadBitmap); return SUCCESS; }