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isnappable.h
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2008-11-07
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#ifndef K3DSDK_ISNAPPABLE_H
#define K3DSDK_ISNAPPABLE_H
// K-3D
// Copyright (c) 1995-2006, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/** \file
\brief Declares isnappable, an abstract interface implemented by objects to which other objects can be interactively "snapped"
\author Tim Shead (tshead@k-3d.com)
*/
#include "iunknown.h"
#include <vector>
namespace k3d
{
class isnap_source;
class isnap_target;
/// Abstract interface implemented by objects to which other objects can be interactively "snapped"
class isnappable :
public virtual iunknown
{
public:
virtual ~isnappable() {}
/// Defines a collection of "snap sources" that describe what parts of this object can be snapped
typedef std::vector<isnap_source*> snap_sources_t;
virtual const snap_sources_t snap_sources() = 0;
/// Defines a collection of "snap targets" that describe what parts of this object can be snapped-to
typedef std::vector<isnap_target*> snap_targets_t;
virtual const snap_targets_t snap_targets() = 0;
/// Adds a new snap source to the object (which takes control of the lifetime of the new source)
virtual void add_snap_source(isnap_source* const SnapSource) = 0;
/// Adds a new snap target to the object (which takes control of the lifetime of the new target)
virtual void add_snap_target(isnap_target* const SnapTarget) = 0;
protected:
isnappable() {}
isnappable(const isnappable&) {}
isnappable& operator=(const isnappable&) { return *this; }
};
} // namespace k3d
#endif // !K3DSDK_ISNAPPABLE_H