LBitmap::LensFlare

#include "ltwrappr.h"

virtual L_INT LBitmap::LensFlare(ptCenter, uBright, uFlag, crColor)

Simulates the secondary reflections caused when bright lights are facing the camera lens. The lens flare is refracted into a series of lightened circles that surround the flare. This function is available in the Raster Pro and above toolkits.

Returns

Comments

Secondary reflections are caused when bright lights are facing the camera lens. These reflections can show up as spots or banding. The function adds this effect to the bitmap by controlling their number, position, brightness and size of the spots or banding. Each lens type has its own spot distribution and ray thickness.

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, see the following figure:

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

To obtain this effect, the following settings were used with the function:

ptCenter = (150, 162);

uBright = 100;

uFlag = LNS_TYPE_1;

crColor = RGB(255,128,0);

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

See Also

Example

void TestFunction(LAnimationWindow *BitmapWindow) 
{
   POINT  CenterPt; 
   CenterPt.x  =  BitmapWindow->GetWidth()/2; 
   CenterPt.y  =  BitmapWindow->GetHeight()/2; 

   BitmapWindow->LensFlare(CenterPt, 100, LNS_TYPE_1,  RGB(100, 150, 10)); 
}