LVectorBase::LogicalToPhysical

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#include "ltwrappr.h"

virtual L_INT LVectorBase::LogicalToPhysical(pDst, pSrc)

POINT *pDst;	/* pointer to a POINT structure */
const pVECTORPOINT pSrc;	/* pointer to a VECTORPOINT structure */

Converts a 3D VECTORPOINT into a Windows 2D POINT.

Parameter	Description
pDst	Pointer to a POINT structure to be updated with the physical 2 dimensional point converted from the 3 dimensional vector point in pSrc.
pSrc	Pointer to a VECTRPOINT structure that contains a 3 dimensional point to be converted into a 2 dimensional point.

Returns

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

Comments

Converts a given logical point in the vector drawing (with X, Y, Z coordinates), into a physical 2D point.

Conversion will be based on the current view port and camera set in the VECTORHANDLE.

Not supported in DirectX.

Required DLLs and Libraries

LVKRN

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:	LVectorBase::GetObjectParallelogram, LVectorBase::GetObjectRect, LVectorBase::PhysicalToLogical
Topics:	Vector Images: Viewing a Vector Image
	Vector Images: Vector Units

Example

This example will obtains drawing physical extents.

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
L_INT LVectorBase__LogicalToPhysicalExample()
{
   L_INT       nRet;
   VECTORPOINT LeftTop, RightBottom;
   POINT       LeftTop2D, RightBottom2D;
   LVectorBase Vector;
   nRet = Vector.Load(MAKE_IMAGE_PATH(TEXT("random.dxf")));
   if(nRet != SUCCESS)
      return nRet;
   // Get drawing logical extents 
   nRet = Vector.GetObjectParallelogram( &LeftTop, &RightBottom );
   if(nRet != SUCCESS)
      return nRet;
   // Convert to physical to get the rect where the drawing will be painted 
   nRet = Vector.LogicalToPhysical(&LeftTop2D, &LeftTop );
   if(nRet != SUCCESS)
      return nRet;
   nRet = Vector.LogicalToPhysical( &RightBottom2D, &RightBottom );
   if(nRet != SUCCESS)
      return nRet;
   return SUCCESS;
}