LBitmap::FreeRadBend

#include "ltwrappr.h"

virtual L_INT LBitmap::FreeRadBend(pnCurve, uCurveSize, uScale, CenterPt,crFill, uFlags)

L_INT L_FAR * pnCurve;

/*array of integer values */

L_UINT uCurveSize;

/*array size */

L_UINT uScale;

/* scaling factor */

POINT CenterPt;

/* center point */

COLORREF crFill;

/* background color */

L_UINT uFlags;

/* flags */

Wraps the bitmap along its radius on a 3D surface shaped by pnCurve. This function is available in the Raster Pro and above toolkits.

Parameter

Description

pnCurve

Array of integers that represent surface shape values. Valid values for each element in the pnCurve array range between –1000 and 1000. Positive values mean the curve is concave in and negative values mean the curve is concave out. The values in this array are internally divided by 1000.

uCurveSize

Size of the pnCurve array. This can be any number, up to the size of the available buffer.

uScale

Factor used to multiply the various amplitude values in the pnCurve array. Each value in the pnCurve array is multiplied by this factor. For example, if you want to double the size of the amplitude values, use a uScale value of 2; to triple the amplitudes values, use a uScale value of 3, etc. The top practical limit for this parameter is the width and height of pBitmap.

CenterPt

POINT structure that contains the surface center.

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 peripherally exposed areas and areas exposed inside the surface. You can use a bit wise OR (|) to specify one flag from each group.

 

The following are the flags that indicate how to handle peripherally 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 how to handle exposed areas inside the surface:

 

Value

Meaning

 

FILL_ROT

[0x0000] Rotate the image inside the surface pattern.

 

FILL_WOUTROT

[0x0010] Fill the exposed center the same way the peripherally exposed areas are filled.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

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.

For an example, the following figure shows a bitmap before the effect is applied.

image\FreeRadBend_Before.gif

The following figure shows the same bitmap after the effect has been applied.

image\FreeRadBend_After.gif

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::AdjustTint. LBitmap::ColorHalfTone, LBitmap::AddNoise, LBitmap::Emboss, LBitmap::Mosaic, LBitmap::MotionBlur, LBitmap::Oilify, LBitmap::Posterize, LBitmap::RemoveRedeye, LBitmap::Solarize, LBitmapBase::Underlay, 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::Bending, LBitmap::Cylindrical, LBitmap::FreeHandShear, LBitmap::FreeHandWave, LBitmap::Impressionist, LBitmap::Pixelate, LBitmap::Polar, LBitmap::Punch, LBitmap::RadialBlur, LBitmap::RadWave, LBitmap::Ripple, LBitmap::Spherize, LBitmap::Swirl, LBitmap::Wave, LBitmap::Wind, LBitmap::ZoomBlur, LBitmap::ZoomWave

Topics:

Raster Image Functions: Doing Geometric Transformations

 

Applying Artistic Effects

 

Using Color Values in LEADTOOLS

 

Raster Image Functions: Correcting Colors

Example

void TestFunction(LAnimationWindow *BitmapWindow) 
{
   POINT  apUserPoint [4]; 
   L_INT  pnCurve[13]; 
   POINT  CenterPt; 
   /* Applay the filter*/
   apUserPoint [0].x = 0; 
   apUserPoint [0].y = 0; 
   apUserPoint [1].x = 3; 
   apUserPoint [1].y = 10; 
   apUserPoint [2].x = 9; 
   apUserPoint [2].y = -10; 
   apUserPoint [3].x = 12; 
   apUserPoint [3].y = 0; 
   LAnimationWindow::GetCurvePoints (pnCurve, apUserPoint, 4, NULL, GUB_LINEAR); 
   CenterPt.x  =  BitmapWindow->GetWidth()/2; 
   CenterPt.y  =  BitmapWindow->GetHeight()/2; 
   
   BitmapWindow->FreeRadBend(pnCurve, 13,200,  CenterPt, RGB(255,0,0), FILL_CLR | FILL_ROT); 
}