LVectorBase::LogicalToPhysical

#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; 
}

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