LBitmap::ZigZag

#include "ltwrappr.h"

L_INT LBitmap::ZigZag(uAmplitude, uAttenuation, uFrequency, nPhase, CenterPt, crFill, uFlags)

L_UINT uAmplitude;	/* wave's magnitude */
L_UINT uAttenuation;	/* amplitude decay rate */
L_UINT uFrequency;	/* number of repeated waves */
L_INT nPhase;	/* wave phase shift */
POINT CenterPt;	/* effect center */
COLORREF crFill;	/* color value */
L_UINT uFlags;	/* flags */

Radially distorts the bitmap by creating waves that twist the image around a specified center.

Parameter	Description
uAmplitude	Non-zero value that represents the magnitude of the wave (amount of displacement), if ZG_RAD is set in the uFlags parameter. The valid range is from 1 100.
uAttenuation	Attenuation value. The attenuation value indicates how rapidly the wave amplitude decays as the wave travels along the radial line. The valid range is from 0 - 1000.
uFrequency	Number of times the waves repeat along the radial line.
nPhase	Wave phase shift, in hundredths of degrees. The valid range is from 36000 to 36000 (The value in degrees is nPhase divided by 100).
CenterPt	POINT structure that contains the center of the zigzag wave.
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, and the wave radiation 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 wave radiation type:
	Value	Meaning
	ZG_RAD	[0x0000] Create distortion waves around the CenterPt.
	ZG_POND	[0x0010] Create distortion waves that resemble the ripples in a pond.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

For an example, click here

To create other zigzag forms refer to LBitmap::Ripple, LBitmap::ZoomWave and LBitmap::RadWave.

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 LBase::EnableStatusCallback.

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.

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

Win32, x64.

See Also

Functions:	LBitmap::AddNoise, LBitmap::Emboss, LBitmap::Mosaic, LBitmap::MotionBlur, LBitmap::Oilify, LBitmap::Posterize, LBitmap::RemoveRedeye, LBitmap::Solarize, LBitmapBase::Underlay, LBitmap::Bending, LBitmap::Cylindrical, LBitmap::FreeHandShear, LBitmap::FreeHandWave, LBitmap::Pixelate, LBitmap::Impressionist, LBitmap::Polar, LBitmap::Punch, LBitmap::RadialBlur, LBitmap::RadWave, LBitmap::Ripple, LBitmap::Swirl, LBitmap::Wave, LBitmap::Wind, LBitmap::ZoomBlur, LBitmap::ZoomWave, LBitmap::BumpMap, LBitmap::Cubism, LBitmap::DrawStar, LBitmap::Dry, LBitmap::FreePlaneBend, LBitmap::FreeRadBend, LBitmap::GlassEffect, LBitmap::GlowFilter, LBitmap::LensFlare, LBitmap::Light, LBitmap::Ocean, LBitmap::PlaneBend, LBitmap::Plane, LBitmap::SampleTarget, LBitmap::Tunnel, LBitmap::Spherize, LBitmap::MosaicTiles, LBitmap::Pointillist
Topics:	Raster Image Functions: Doing Geometric Transformations
	Applying Artistic Effects
	Raster Image Functions: Artistic Effects
	Raster Image Functions: Functions Where the Region Preempts the Bitmap

Example

Apply ZigZag waves from the center of the image

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
L_INT LBitmap__ZigZagExample(LBitmapWindow m_LBitmapWnd)
{
   L_INT nRet;
   POINT CenterPt;
   LBitmap LeadBitmap;
   CenterPt.x  =  m_LBitmapWnd.GetWidth()/2;
   CenterPt.y  =  m_LBitmapWnd.GetHeight()/2;
   
   nRet = LeadBitmap.Load(MAKE_IMAGE_PATH(TEXT("IMAGE1.CMP")), 0,ORDER_BGR);
   if(nRet != SUCCESS)
      return nRet;
   nRet = LeadBitmap.ZigZag(50, 1000, 10, 0, CenterPt, 0, FILL_RPT | ZG_POND);
   if(nRet != SUCCESS)
      return nRet;
   return SUCCESS;
}