LAnnAudioClip::GetRotateAngle

#include "ltwrappr.h"

virtual L_INT LAnnAudioClip::GetRotateAngle(pdAngle)

L_DOUBLE *pdAngle;

pointer to a double that returns the rotate angle

Gets the rotation angle for an AudioClip annotation object.

Parameter

Description

pdAngle

Pointer to a double variable to be updated with the rotation angle.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

Call this function to get the rotation angle for an AudioClip annotation object.

The angle is in radians, and uses the following convention.

The possible range of rotate values is (-Pi) ... (Pi)

A rotation in the clockwise direction is considered a positive rotation.

A rotation in the counter-clockwise direction is considered a negative rotation.

For example, if a rectangle is rotated 90 degrees in the counter clockwise direction, this function will get (-PI/2) for the rotation angle. If a rectangle is rotated 90 degrees in the clockwise direction, this function will get PI/2 for the rotation angle. If a rectangle is rotated 270 degrees in the counter clockwise direction, this is equivalent to 90 degrees in the clockwise direction so the rotation value returned is PI/2.

Required DLLs and Libraries

LTANN

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:

Class Members

Topics:

Annotation Functions: Object Properties

 

Implementing Annotations

 

Automated User Interface for Annotations

 

Annotation Functions: Creating and Deleting Annotations

 

Types of Annotations

 

Annotation Functions: Implementing Custom Annotations

 

Annotation Functions: Creating Custom Annotations

 

Fixed Annotations

 

Minimizing Flicker With Double Buffering

 

Annotation Functions: Working with the Toolbar

Example

// This examples displays the rotation angle of the annotation AudioClip object in radians and degrees

L_INT LAnnAudioClip_GetRotateAngleExample(LAnnAudioClip * pLAudioClip)  
{ 
   L_INT nRet; 
 
   L_DOUBLE dAngle;  
 
   L_TCHAR szMsg[200];  
 
   nRet = pLAudioClip->GetRotateAngle(&dAngle);  
  
   if (nRet == SUCCESS)  
 
   { 
      wsprintf(szMsg, TEXT("Angle of rotation: Radians[%lf] Degrees[%f]\n"), dAngle, dAngle *180 / 3.1415926535);  
      MessageBox(NULL, szMsg, TEXT(""), MB_OK);  
   } 
   else 
      return nRet; 
 
 
   return SUCCESS; 
} 

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