#include "l_bitmap.h"
L_LTIMGEFX_API L_INT L_GetRgnPerimeterLength (pBitmap, pXForm, puLength, uFlags)
pBITMAPHANDLE pBitmap; |
pointer to the bitmap handle |
pRGNXFORM pXForm; |
pointer to a coordinate-translation structure |
L_SIZE_T *puLength; |
pointer to a variable to be updated |
L_UINT32 uFlags; |
flags |
Computes the length of the perimeter of a region.
Parameter |
Description |
pBitmap |
Pointer to the bitmap handle. |
pXForm |
Pointer to an RGNXFORM structure that LEADTOOLS uses to translate between display coordinates and bitmap coordinates. |
|
If you specify NULL in this parameter, the scalar fields default to 1, the offsets default to 0, and the view perspective defaults to the bitmap's view perspective. |
puLength |
Address of a variable to be updated with the perimeter length of the region. The length is expressed in pixels. |
uFlags |
Reserved for future use. Must be 0. |
SUCCESS |
The function was successful. |
< 1 |
An error occurred. Refer to Return Codes. |
This function works only on bitmaps having a region. If a bitmap does not have a region the function returns the error: Not Initialized.
To update a status bar or detect a user interrupt during execution of this function, refer to L_SetStatusCallback.
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.
Required DLLs and Libraries
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Win32, x64.
#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
L_INT GetRgnPerimeterLengthExample(L_VOID)
{
L_INT nRet;
BITMAPHANDLE LeadBitmap; /* Bitmap handle for the image */
RECT rcRect;
L_SIZE_T uPerimeter;
/* Load a bitmap at its own bits per pixel */
nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("ImageProcessingDemo\\Image3.cmp")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);
if(nRet !=SUCCESS)
return nRet;
rcRect.top = LeadBitmap.Height/3;
rcRect.bottom = LeadBitmap.Height*2/3;
rcRect.left = LeadBitmap.Width/3;
rcRect.right = LeadBitmap.Width*2/3;
nRet = L_SetBitmapRgnEllipse (&LeadBitmap, NULL, &rcRect, L_RGN_SET);
if(nRet !=SUCCESS)
return nRet;
nRet = L_GetRgnPerimeterLength(&LeadBitmap, NULL, &uPerimeter, 0);
if(nRet !=SUCCESS)
return nRet;
//free bitmap
if(LeadBitmap.Flags.Allocated)
L_FreeBitmap(&LeadBitmap);
return SUCCESS;
}
Raster .NET | C API | C++ Class Library | JavaScript HTML5
Document .NET | C API | C++ Class Library | JavaScript HTML5
Medical .NET | C API | C++ Class Library | JavaScript HTML5
Medical Web Viewer .NET