#include "l_bitmap.h"
L_LTIMGSFX_API L_INT L_AgingBitmap (pBitmap, uHScratchCount, uVScratchCount,uMaxScratchLen, uDustDensity, uPitsDensity, uMaxPitSize, crScratch, crDust,crPits, uFlags)
pBITMAPHANDLE pBitmap; |
pointer to the bitmap handle |
L_UINT uHScratchCount; |
number of horizontal scratch lines |
L_UINT uVScratchCount; |
number of vertical scratch lines |
L_UINT uMaxScratchLen; |
maximum scratch line length |
L_UINT uDustDensity; |
dust density |
L_UINT uPitsDensity; |
density of pits |
L_UINT uMaxPitSize; |
maximum pit size |
COLORREF crScratch; |
color of the scratch lines |
COLORREF crDust; |
dust color |
COLORREF crPits; |
color of pits |
L_UINT uFlags; |
flags |
Adds effects that simulate random color changes, scratches, dust and pits, making a bitmap look like it was made from an old film.
Parameter | Description | |
pBitmap | Pointer to the bitmap handle referencing the bitmap to be changed. | |
uHScratchCount | Number of horizontal scratch lines. | |
uVScratchCount | Number of vertical scratch lines. | |
uMaxScratchLen | Maximum scratch line length, in pixels. Its minimum value is 2. | |
uDustDensity | Dust density, expressed in tenths of percent of the bitmap area. Valid values range between 0 and 1000. This value is divided internally by 10. If uDustDen = 1000 then dust density = 100% (that is, the number of dust points = the entire bitmap area.) | |
uPitsDensity | Density of the pits, expressed in tenths of percent of the bitmap area. Valid values range between 0 and 1000. This value is divided internally by 10. If uPitsDen = 1000 then the density of the pits = 100% (that is, the number of pits = the entire bitmap area.) | |
uMaxPitSize | Maximum pit size, in pixels. The size of the pits will be selected at random between 1 and uMaxPitSize. | |
crScratch | A COLORREF value representing the color of the scratch lines. | |
crDust | A COLORREF value representing the color of the dust. | |
crPits | A COLORREF value representing the color of the pits. | |
uFlags | Flags that indicate the distortion type and the distortion color. You can use a bitwise OR (|) to specify one or more flags from each group. | |
The following flags indicate the distortion type: | ||
Value | Meaning | |
AGING_ADD_NOTHING | [0x0000] Do not add any distortion type. In this case, the bitmap will be changed by random changes in the color intensity. | |
AGING_ADD_VSCRATCH | [0x0001] Add vertical scratch lines. | |
AGING_ADD_HSCRATCH | [0x0002] Add horizontal scratch lines. | |
AGING_ADD_DUST | [0x0004] Add dust. | |
AGING_ADD_PITS | [0x0008] Add pits. | |
The following flags indicate the distortion color: | ||
Value | Meaning | |
AGING_SCRATCH_INV | [0x0000] Use pixels color inverse as scratch line color. If this flag is set, crScratch will be ignored. | |
AGING_SCRATCH_CLR | [0x0010] Use the crScratch as scratch line color. | |
AGING_DUST_INV | [0x0000] Use pixels color inverse as dust color. If this flag is set, crDust will be ignored. | |
AGING_DUST_CLR | [0x0020] Use the crDust as dust color. | |
AGING_PITS_INV | [0x0000] Use pixels color inverse as the color of the pits. If this flag is set, crPits will be ignored. | |
AGING_PITS_CLR | [0x0040] Use the crPits as the color of the pits. |
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
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.
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.
The width of the scratches is 1 pixel. The length of the scratches is random (between 2 and uMaxScratchLen).
The size of dust particles is 1 pixel (1x1).
The size and shape of pits is selected at random. The pit shapes are random and will be between 1x1 and uMaxPitSize x uMaxPitSize.
The function will also make random changes to the pixels intensities.
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
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Win32, x64.
This example loads a bitmap and applies the aging effect.
#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
L_INT AgingBitmapExample(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("IMAGE1.CMP")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);
if(nRet !=SUCCESS)
return nRet;
/* apply aging effect */
nRet = L_AgingBitmap (&LeadBitmap, 10, 2, 50,2,5,6, RGB(255,255,0), RGB(0,0,0), RGB(0,0,255), AGING_ADD_VSCRATCH | AGING_ADD_PITS | AGING_SCRATCH_INV | AGING_PITS_CLR);
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;
}
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