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LVectorBase::LogicalToPhysical

Summary

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

Syntax

#include "ltwrappr.h"

virtual L_INT LVectorBase::LogicalToPhysical(pDst, pSrc)

Parameters

POINT *pDst

Pointer to a POINT structure to be updated with the physical 2 dimensional point converted from the 3 dimensional vector point in pSrc.

const pVECTORPOINT pSrc

Pointer to a VECTRPOINT structure that contains a 3 dimensional point to be converted into a 2 dimensional point.

Returns

Value	Meaning
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

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

Example

This example will obtains drawing physical extents.

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; 
}