070221abc9
2006/03/24 18:23:35 thb 1.3.18.2: #i37778# Moved whole slideshow engine from namespace presentation (which conflicts with one of the UNO subnamespaces) to slideshow 2006/03/15 15:22:23 thb 1.3.18.1: #i49357# Removed external include guards from all non-export headers (and from the cxx files, anyway)
68 lines
2.2 KiB
C++
68 lines
2.2 KiB
C++
/*************************************************************************
|
|
*
|
|
* OpenOffice.org - a multi-platform office productivity suite
|
|
*
|
|
* $RCSfile: lerp.hxx,v $
|
|
*
|
|
* $Revision: 1.4 $
|
|
*
|
|
* last change: $Author: kz $ $Date: 2006-12-13 15:59:32 $
|
|
*
|
|
* The Contents of this file are made available subject to
|
|
* the terms of GNU Lesser General Public License Version 2.1.
|
|
*
|
|
*
|
|
* GNU Lesser General Public License Version 2.1
|
|
* =============================================
|
|
* Copyright 2005 by Sun Microsystems, Inc.
|
|
* 901 San Antonio Road, Palo Alto, CA 94303, USA
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License version 2.1, as published by the Free Software Foundation.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*
|
|
************************************************************************/
|
|
|
|
#ifndef _SLIDESHOW_LERP_HXX
|
|
#define _SLIDESHOW_LERP_HXX
|
|
|
|
#include <sal/types.h>
|
|
|
|
namespace slideshow
|
|
{
|
|
namespace internal
|
|
{
|
|
|
|
/** Generic linear interpolator
|
|
|
|
@tpl ValueType
|
|
Must have operator+ and operator* defined, and should
|
|
have value semantics.
|
|
|
|
@param t
|
|
As usual, t must be in the [0,1] range
|
|
*/
|
|
template< typename ValueType > ValueType lerp( const ValueType& rFrom,
|
|
const ValueType& rTo,
|
|
double t )
|
|
{
|
|
// This is only to suppress a double->int warning. All other
|
|
// types should be okay here.
|
|
return static_cast<ValueType>( (1.0-t)*rFrom + t*rTo );
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
#endif /* _SLIDESHOW_LERP_HXX */
|