LBitmap::Swirl

#include "ltwrappr.h"

virtual L_INT LBitmap::Swirl(nAngle, CenterPt)

L_INT nAngle;	/* degree of rotation */
POINT CenterPt;	/* effect center */

Spins the image according to the rotation angle to produce a swirl pattern. This function is available in the Raster Pro and above toolkits.

Parameter	Description
nAngle	The degree of rotation. This value is in degrees (0…360…720, etc.).
CenterPt	POINT structure that contains the center of the swirl.

Returns

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

Comments

The function swirls the image around the specified CenterPt. 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.

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.

Required DLLs and Libraries

LTIMG

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions:	LBitmap::BricksTexture, LBitmap::Canvas, LBitmap::Clouds, LBitmap::ColoredBalls, LBitmap::DiffuseGlow, LBitmap::DisplaceMap, LBitmap::Fragment, LBitmap::HalfTonePattern, LBitmap::MaskConvolution, LBitmap::MosaicTiles, LBitmap::Offset, LBitmap::Perspective, LBitmap::PlasmaFilter, LBitmap::Pointillist, LBitmap::RomanMosaic, LBitmap::Vignette, LBitmap::ZigZag, LBitmap::AddNoise, LBitmap::Emboss, LBitmap::Mosaic, LBitmap::MotionBlur, LBitmap::Oilify, LBitmap::Posterize, LBitmap::RemoveRedeye, LBitmap::Solarize, LBitmapBase::Underlay, LDialogImageEffect::DoModalSwirl, LBitmap::Bending, LBitmap::Cylindrical, LBitmap::FreeHandShear, LBitmap::Impressionist, LBitmap::FreeHandWave, LBitmap::Pixelate, LBitmap::Polar, LBitmap::Punch, LBitmap::RadWave, LBitmap::Ripple, LBitmap::Spherize, LBitmap::RadialBlur, LBitmap::Wave, LBitmap::Wind, LBitmap::ZoomBlur, LBitmap::ZoomWave
Topics:	Raster Image Functions: Doing Geometric Transformations
	Processing an Image
	Applying Artistic Effects

Example

void MyTestFunction(LAnimationWindow * LAniWnd)
{
   POINT   CenterPt;
   CenterPt.x  =  (LAniWnd->GetHandle ())->Width/2;
   CenterPt.y  =  (LAniWnd->GetHandle ())->Height/2;

   LAniWnd->Swirl(180, CenterPt);
}