L_WaveBitmap
#include "l_bitmap.h"
L_LTIMGSFX_API L_INT L_WaveBitmap(pBitmap, uAmplitude, uWaveLen, nAngle, uHorzFact, uVertFact, crFill, uFlags)
pBITMAPHANDLE pBitmap; |
/* pointer to the bitmap handle */ |
L_UINT uAmplitude; |
/* waves size */ |
L_UINT uWaveLen; |
/* waves length */ |
L_INT nAngle; |
/* waves rotation angle */ |
L_UINT uHorzFact; |
/* size of horizontal wave */ |
L_UINT uVertFact; |
/* size of vertical wave */ |
COLORREF crFill; |
/* fill color */ |
L_UINT uFlags; |
/* flags */ |
Distorts the bitmap with two perpendicular waves at the specified angle and with the specified wave type.
Parameter |
Description |
|
pBitmap |
Pointer to the bitmap handle that references the bitmap on which to apply the effect. |
|
uAmplitude |
Waves magnitude. The values range from 1 to the length of the image's diagonal. |
|
uWaveLen |
Value that represents the wave length, if DIS_PER is set in the uFlags parameter. Possible values range from 1 100 and give the wavelength as a percentage of the bitmap dimensions. If DIS_FRQ is set in uFlags, this value is the number of repeated waves. |
|
nAngle |
Waves rotation angle in hundredths of degrees. The valid range is from 18000 to 18000 (The value in degrees is nAngle divided by 100). |
|
uHorzFact |
Size of the horizontal wave, given as a percentage. The valid range is from 0 to 100. |
|
uVertFact |
Size of the vertical wave, given as a percentage. The valid range is from 0 to 100. |
|
crFill |
The COLORREF value that specifies the fill color for any exposed areas. 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. |
|
uFlags |
Flags that indicate how to handle exposed areas, the type of information in the uWaveLength parameter and the wave type. You can use a bitwise OR (|) to specify one flag from each group. |
|
|
The following are the flags that indicate how to handle exposed areas: |
|
|
Value |
Meaning |
|
FILL_CLR |
[0x0000] Fill any exposed areas with crFill. |
|
FILL_RPT |
[0x0001] Stretch the image edges to fill the exposed area. |
|
FILL_NOCHG |
[0x0002] Leave the exposed area as is, without changing it. |
|
The following are the flags that indicate the type of information in the uWaveLen parameter: |
|
|
Value |
Meaning |
|
DIS_PER |
[0x0000] The value in uWaveLen is a wavelength given as a percent of the bitmap dimensions. If this value is used, the valid range of uWaveLen is from 0 to 100. |
|
DIS_FRQ |
[0x0010] The value in uWaveLen is the frequency, or the number of times the wave repeats. |
|
The following are the flags that indicate the wave type: |
|
|
Value |
Meaning |
|
WV_SIN |
[0x0000] The wave is a sinusoidal wave. |
|
WV_COS |
[0x0100] The wave is a sinusoidal wave shifted by 90 degrees. |
|
WV_SQUARE |
[0x0200] The wave is a square wave. |
|
WV_TRIANG |
[0x0300] The wave is a triangular wave. |
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.
The function applies two perpendicular waves. The uHorzFact and uVertFact parameters control the size of these waves.
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 WaveBitmapExample(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; /* apply sinusoidal waves on the image*/ nRet = L_WaveBitmap(&LeadBitmap, 20, 25, 0, 100 , 100, 0, FILL_RPT | DIS_PER | WV_SIN); 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; }