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.

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;
}