L_ZoomWaveBitmap

#include "l_bitmap.h"

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

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 uFlags;	/* 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.
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.

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 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

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

Functions:	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
Topics:	Raster Image Functions: Doing Geometric Transformations
	Processing an Image
	Applying Artistic Effects
	Using Color Values in LEADTOOLS

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("%UserProfile%\\My Documents\\LEADTOOLS 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("%UserProfile%\\My Documents\\LEADTOOLS 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;
}