khanat-opennel-code/code/nel/include/nel/3d/ps_direction.h

51 lines
1.7 KiB
C++

// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#ifndef NL_PS_DIRECTION_H
#define NL_PS_DIRECTION_H
#include "nel/misc/types_nl.h"
#include "nel/misc/vector.h"
namespace NL3D {
/** This class is an interface for object for a particle system that need a direction (forces, emitter...)
* Some of these object support global value as a direction (see CParticleSystem::setGlobalVectorValue), so
* calls to setDir then have no effect.
*/
class CPSDirection
{
public :
virtual ~CPSDirection() {}
virtual void setDir(const NLMISC::CVector &v) = 0;
virtual NLMISC::CVector getDir(void) const = 0;
virtual bool supportGlobalVectorValue() const { return false; }
/** The direction is taken from a global vector defined in the particle system
* NULL or an empty string as a name disable the use of a global value
*/
virtual void enableGlobalVectorValue(const std::string &/* name */) {}
virtual std::string getGlobalVectorValueName() const { return ""; }
};
} // NL3D
#endif // NL_PS_DIRECTION_H
/* End of ps_direction.h */