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https://github.com/PixarAnimationStudios/OpenSubdiv
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103 lines
3.9 KiB
C++
103 lines
3.9 KiB
C++
//
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// Copyright 2014 DreamWorks Animation LLC.
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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#pragma once
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#ifndef OPENSUBDIV3_VTR_SPARSE_SELECTOR_H
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#define OPENSUBDIV3_VTR_SPARSE_SELECTOR_H
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#include "../version.h"
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#include "../vtr/types.h"
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#include "../vtr/refinement.h"
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#include <vector>
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namespace OpenSubdiv {
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namespace OPENSUBDIV_VERSION {
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namespace Vtr {
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class Refinement;
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//
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// SparseSelector:
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// Class supporting "selection" of components in a Level for sparse Refinement.
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// The term "selection" here implies interest in the limit for that component, i.e.
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// the limit point for a selected vertex, the limit patch for a face, etc. So this
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// class is responsible for ensuring that all neighboring components required to
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// support the limit of those selected are included in the refinement.
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//
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// This class is associated with (and constructed given) a Refinement and its role
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// is to initialize that Refinement instance for eventual sparse refinement. So it
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// is a friend of and expected to modify the Refinement as part of the selection.
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// Given its simplicity and scope it may be worth nesting it in Vtr::Refinement.
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//
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// While all three component types -- vertices, edges and faces -- can be selected,
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// only selection of faces is currently used and actively supported as part of the
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// feature-adaptive refinement.
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//
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class SparseSelector {
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public:
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SparseSelector(Refinement& refine) : _refine(&refine), _selected(false) { }
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~SparseSelector() { }
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void setRefinement(Refinement& refine) { _refine = &refine; }
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Refinement& getRefinement() const { return *_refine; }
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bool isSelectionEmpty() const { return !_selected; }
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//
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// Methods for selecting (and marking) components for refinement. All component indices
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// refer to components in the parent:
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//
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void selectVertex(Index pVertex);
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void selectEdge( Index pEdge);
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void selectFace( Index pFace);
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private:
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SparseSelector() : _refine(0), _selected(false) { }
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bool wasVertexSelected(Index pVertex) const { return _refine->_parentVertexTag[pVertex]._selected; }
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bool wasEdgeSelected( Index pEdge) const { return _refine->_parentEdgeTag[pEdge]._selected; }
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bool wasFaceSelected( Index pFace) const { return _refine->_parentFaceTag[pFace]._selected; }
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void markVertexSelected(Index pVertex) const { _refine->_parentVertexTag[pVertex]._selected = true; }
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void markEdgeSelected( Index pEdge) const { _refine->_parentEdgeTag[pEdge]._selected = true; }
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void markFaceSelected( Index pFace) const { _refine->_parentFaceTag[pFace]._selected = true; }
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void initializeSelection();
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private:
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Refinement* _refine;
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bool _selected;
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};
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} // end namespace Vtr
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} // end namespace OPENSUBDIV_VERSION
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using namespace OPENSUBDIV_VERSION;
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} // end namespace OpenSubdiv
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#endif /* OPENSUBDIV3_VTR_SPARSE_SELECTOR_H */
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