87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
/*
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EXPLICITPLACEMENT.hpp - special Placement yielding an absolute location (Time,Track) for a MObject
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Copyright (C) Lumiera.org
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2008, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef MOBJECT_EXPLICITPLACEMENT_H
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#define MOBJECT_EXPLICITPLACEMENT_H
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#include "proc/mobject/placement.hpp"
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namespace mobject
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{
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/**
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* Special kind of Placement, where the location of the
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* MObject has been nailed down to a fixed position.
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* The Session allways contains one special EDL, which
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* actually is a snapshot of all EDLs contents fixed
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* and reduced to simple positions. This so called Fixture
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* contains only ExplicitPlacement objects and is processed
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* by the Builder to create the render engine node network.
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*
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* @see Placement#resolve factory method for deriving an ExplicitPlacement
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*/
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class ExplicitPlacement : public Placement<MObject>
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{
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public:
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const Time time;
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const Pipe pipe;
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typedef std::pair<Time,Pipe> SolutionData; //TODO (ichthyo consideres better passing of solution by subclass)
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/** no need to resolve any further, as this ExplicitPlacement
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* already \e is the result of a resolve()-call.
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*/
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virtual
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ExplicitPlacement resolve () const
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{
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return *this;
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}
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protected:
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/* @todo ichthyo considers a much more elegant implementation utilizing a subclass
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* of FixedLocation, which would serve as Placement::LocatingSolution, and
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* would be used as LocatingPin::chain subobject as well, so that it could
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* be initialized directly here in the ExplicitPlacement ctor.
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* (ichthyo: siehe Trac #100)
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*/
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ExplicitPlacement (const Placement<MObject>& base, const SolutionData found)
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: Placement<MObject>(base),
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time(found.first), pipe(found.second)
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{ };
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friend ExplicitPlacement Placement<MObject>::resolve () const;
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private:
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/** copying prohibited, ExplicitPlacement is effectively const! */
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ExplicitPlacement& operator= (const ExplicitPlacement&);
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};
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} // namespace mobject
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#endif
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