LBitmapBase::PointToBitmap

#include "ltwrappr.h"

virtual L_INT LBitmapBase::PointToBitmap(nViewPerspective, px, py)

L_INT nViewPerspective;

source view perspective

L_INT * px;

address of the x coordinate variable

L_INT * py;

address of the y coordinate variable

Translates a point (x,y) from the specified view perspective to the class object's bitmap view perspective.

Parameter

Description

nViewPerspective

Source view perspective from which the point should be translated.

px

Address of variable for the X coordinate of the point.

py

Address of variable for the Y coordinate of the point.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

To use this function, do the following:

1.

Declare variables for the X and Y coordinates of a point.

2.

Assign the values of a known point using the coordinates of the source view perspective.

3.

Call this function, passing the addresses of the variables, and specifying the source view perspective. (The function gets the destination view perspective from the bitmap handle.)

4.

Get the translated point from the variables, which this function has updated.

For general information about view perspectives, refer to Accounting for View Perspective.

Required DLLs and Libraries

LTDIS
LTFIL

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

Platforms

Win32, x64.

See Also

Functions:

LBitmapBase::PointToBitmap, Class Members

Topics:

Accounting for View Perspective

Example

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName 
L_INT LBitmapBase__PointToBitmapExample() 
{ 
   L_INT nRet; 
   LBitmapBase MyBitmap; 
   L_INT npx=20, npy=30; 
   nRet =MyBitmap.Load(MAKE_IMAGE_PATH(TEXT("image1.cmp")),24); 
   if(nRet !=SUCCESS) 
      return nRet; 
   nRet =MyBitmap.PointToBitmap(BOTTOM_LEFT, &npx, &npy); 
   if(nRet !=SUCCESS) 
      return nRet; 
   return SUCCESS; 
}

Help Version 19.0.2017.10.27
Products | Support | Contact Us | Copyright Notices
© 1991-2017 LEAD Technologies, Inc. All Rights Reserved.
LEADTOOLS Raster Imaging C++ Class Library Help
Introduction
Version History
Getting Started
LEADTOOLS Raster Imaging Features
Redistributables/Files To Be Included With Your Application
Quick Reference
Tutorials
Classes and Member Functions
Call Back Functions
Summary of Features