L_ZoomWaveBitmap
#include "l_bitmap.h"
L_LTIMGSFX_API L_INT L_ZoomWaveBitmap(pBitmap, uAmplitude, uFrequency, nPhase, uZomFact, CenterPt, crFill, uFlag)
pBITMAPHANDLE pBitmap; |
/* pointer to the bitmap handle */ |
L_UINT uAmplitude; |
/* zoom wave size */ |
L_UINT uFrequency; |
/* number of repeated wave */ |
L_INT nPhase; |
/* wave phase shift */ |
L_UINT uZomFact; |
/* wave growing factor */ |
POINT CenterPt; |
/* zoom wave center */ |
COLORREF crFill; |
/* color value */ |
L_UINT uFlag; |
/* flag */ |
Distorts the bitmap with a wave zoomed from the specified center.
Parameter |
Description |
|
pBitmap |
Pointer to the bitmap handle that references the bitmap on which to apply the effect. |
|
uAmplitude |
Zoom wave magnitude. |
|
uFrequency |
The number of repeated waves along the radial line. |
|
nPhase |
Wave phase shift. The valid range is from 36000 to 36000. The real value is nPhase divided by 100. |
|
uZomFact |
The percentage the wave grows as it moves from the image center. The valid range is from 0 to 100. |
|
CenterPt |
POINT structure that contains the center point from which the wave is zoomed. |
|
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. |
|
uFlag |
Flag that indicates how to handle exposed areas. Possible values are: |
|
|
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. |
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 a sinusoidal wave zoomed from the specified center. The center point must be defined inside the bitmap, or inside the region, if the bitmap has a region.
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 ZoomWaveBitmapExample(L_VOID) { L_INT nRet; BITMAPHANDLE LeadBitmap; /* Bitmap handle for the image */ POINT CenterPt; /* 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 zoom wave from center of the image*/ CenterPt.x = LeadBitmap.Width/2; CenterPt.y = LeadBitmap.Height/2; nRet = L_ZoomWaveBitmap (&LeadBitmap, 20, 10 , 0 , 0, CenterPt, 0 , FILL_RPT); 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; }