sparseSelector.h
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//
// Copyright 2014 DreamWorks Animation LLC.
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
// names, trademarks, service marks, or product names of the Licensor
// and its affiliates, except as required to comply with Section 4(c) of
// the License and to reproduce the content of the NOTICE file.
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// http://www.apache.org/licenses/LICENSE-2.0
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#ifndef OPENSUBDIV3_VTR_SPARSE_SELECTOR_H
#define OPENSUBDIV3_VTR_SPARSE_SELECTOR_H
#include "../version.h"
#include "../vtr/types.h"
#include "../vtr/refinement.h"
#include <vector>
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
namespace Vtr {
namespace internal {
//
// SparseSelector:
// Class supporting "selection" of components in a Level for sparse Refinement.
// The term "selection" here implies interest in the limit for that component, i.e.
// the limit point for a selected vertex, the limit patch for a face, etc. So this
// class is responsible for ensuring that all neighboring components required to
// support the limit of those selected are included in the refinement.
//
// This class is associated with (and constructed given) a Refinement and its role
// is to initialize that Refinement instance for eventual sparse refinement. So it
// is a friend of and expected to modify the Refinement as part of the selection.
// Given its simplicity and scope it may be worth nesting it in Vtr::Refinement.
//
// While all three component types -- vertices, edges and faces -- can be selected,
// only selection of faces is currently used and actively supported as part of the
// feature-adaptive refinement.
//
class SparseSelector {
public:
SparseSelector(Refinement& refine) : _refine(&refine), _selected(false) { }
~SparseSelector() { }
void setRefinement(Refinement& refine) { _refine = &refine; }
Refinement& getRefinement() const { return *_refine; }
bool isSelectionEmpty() const { return !_selected; }
//
// Methods for selecting (and marking) components for refinement. All component indices
// refer to components in the parent:
//
void selectVertex(Index pVertex);
void selectEdge( Index pEdge);
void selectFace( Index pFace);
private:
SparseSelector() : _refine(0), _selected(false) { }
bool wasVertexSelected(Index pVertex) const { return _refine->getParentVertexSparseTag(pVertex)._selected; }
bool wasEdgeSelected( Index pEdge) const { return _refine->getParentEdgeSparseTag(pEdge)._selected; }
bool wasFaceSelected( Index pFace) const { return _refine->getParentFaceSparseTag(pFace)._selected; }
void markVertexSelected(Index pVertex) const { _refine->getParentVertexSparseTag(pVertex)._selected = true; }
void markEdgeSelected( Index pEdge) const { _refine->getParentEdgeSparseTag(pEdge)._selected = true; }
void markFaceSelected( Index pFace) const { _refine->getParentFaceSparseTag(pFace)._selected = true; }
void initializeSelection();
private:
Refinement* _refine;
bool _selected;
};
} // end namespace internal
} // end namespace Vtr
} // end namespace OPENSUBDIV_VERSION
using namespace OPENSUBDIV_VERSION;
} // end namespace OpenSubdiv
#endif /* OPENSUBDIV3_VTR_SPARSE_SELECTOR_H */
OpenSubdiv
Definition: limits.h:32
OpenSubdiv::OPENSUBDIV_VERSION::Vtr::Index
int Index
Definition: types.h:54