#include "l_bitmap.h"

L_LTIMGSFX_API L_INT L_ZoomWaveBitmap(pBitmap, uAmplitude, uFrequency, nPhase, uZomFact, CenterPt, crFill, uFlags)


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


color value

L_UINT uFlags;


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.
uFlags 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.



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.

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 in the Document and Medical Imaging 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


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.

See Also


L_AddBitmapNoise, L_EmbossBitmap, L_MosaicBitmap, L_MotionBlurBitmap, L_OilifyBitmap, L_PosterizeBitmap, L_RemoveRedeyeBitmap, L_SolarizeBitmap, L_UnderlayBitmap, L_BendingBitmap, L_CylindricalBitmap, L_FreeHandShearBitmap, L_FreeHandWaveBitmap, L_PixelateBitmap, L_ImpressionistBitmap, L_PolarBitmap, L_PunchBitmap, L_RadialBlurBitmap, L_RadWaveBitmap, L_RippleBitmap, L_SpherizeBitmap, L_SwirlBitmap, L_WaveBitmap, L_WindBitmap, L_ZoomBlurBitmap, L_BumpMapBitmap, L_CubismBitmap, L_DrawStarBitmap, L_DryBitmap, L_FreePlaneBendBitmap, L_FreeRadBendBitmap, L_GlassEffectBitmap, L_GlowFilterBitmap, L_LensFlareBitmap, L_LightBitmap, L_OceanBitmap, L_PlaneBendBitmap, L_PlaneBitmap, L_SampleTargetBitmap, L_TunnelBitmap, L_DlgZoomWave


Raster Image Functions: Doing Geometric Transformations


Processing an Image


Applying Artistic Effects


Using Color Values in LEADTOOLS


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(MAKE_IMAGE_PATH(TEXT("sample5.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(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL); 
   if(nRet !=SUCCESS) 
      return nRet; 
   //free bitmap  
   return SUCCESS; 

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