Renegade/Code/ww3d2/pivot.cpp

/*
**	Command & Conquer Renegade(tm)
**	Copyright 2025 Electronic Arts Inc.
**
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**	it under the terms of the GNU General Public License as published by
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**	(at your option) any later version.
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*/

/* $Header: /Commando/Code/ww3d2/pivot.cpp 1     1/22/01 3:36p Greg_h $ */
/*********************************************************************************************** 
 ***                            Confidential - Westwood Studios                              *** 
 *********************************************************************************************** 
 *                                                                                             * 
 *                 Project Name : Commando / G 3D Library                                      * 
 *                                                                                             * 
 *                     $Archive:: /Commando/Code/ww3d2/pivot.cpp                              $* 
 *                                                                                             * 
 *                       Author:: Greg_h                                                       * 
 *                                                                                             * 
 *                     $Modtime:: 1/08/01 10:04a                                              $* 
 *                                                                                             * 
 *                    $Revision:: 1                                                           $* 
 *                                                                                             * 
 *---------------------------------------------------------------------------------------------* 
 * Functions:                                                                                  * 
 *   PivotClass::PivotClass -- Constructor for PivotClass                                      * 
 *   PivotClass::Compute_Transform -- Update the pivot's transformation matrix                 * 
 *   PivotClass::Compute_Transform -- Update the pivot's transformation matrix                 * 
 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

#include "pivot.h"
#include "wwmath.h"



/*********************************************************************************************** 
 * PivotClass::PivotClass -- Constructor for PivotClass                                        * 
 *                                                                                             * 
 * INPUT:                                                                                      * 
 *                                                                                             * 
 * OUTPUT:                                                                                     * 
 *                                                                                             * 
 * WARNINGS:                                                                                   * 
 *                                                                                             * 
 * HISTORY:                                                                                    * 
 *   07/24/1997 GH  : Created.                                                                 * 
 *=============================================================================================*/
PivotClass::PivotClass(void) :
	Index(0),
	Parent(NULL),
	BaseTransform(1),
	Transform(1),
	IsVisible(true),
	IsCaptured(false),
	CapTransform(1),
	WorldSpaceTranslation(false)
{
}


void PivotClass::Capture_Update(void)
{
	if ( WorldSpaceTranslation ) {
		// The Translation of CapTransform is meant to be in world space,
		// so remove before applying orientation
		Matrix3D CapOrientation = CapTransform;
		CapOrientation.Set_Translation( Vector3( 0,0,0 ) );
		Matrix3D::Multiply(Transform,CapOrientation,&(Transform));
		// Now apply translation in world space
		Transform.Adjust_Translation( CapTransform.Get_Translation() );
	} else {
		Matrix3D::Multiply(Transform,CapTransform,&(Transform));
	}
}