79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
/* SPDX-FileCopyrightText: 2016 Blender Foundation
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* Author: Sergey Sharybin. */
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#ifndef OPENSUBDIV_TOPOLOGY_REFINER_IMPL_H_
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#define OPENSUBDIV_TOPOLOGY_REFINER_IMPL_H_
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#ifdef _MSC_VER
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# include <iso646.h>
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#endif
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#include <opensubdiv/far/topologyRefiner.h>
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#include "internal/topology/mesh_topology.h"
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// Those settings don't really belong to OpenSubdiv's topology refiner, but
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// we are keeping track of them on our side of topology refiner. This is to
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// make it possible to ensure we are not trying to abuse same OpenSubdiv's
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// topology refiner with different subdivision levels or with different
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// adaptive settings.
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struct OpenSubdiv_TopologyRefinerSettings {
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bool is_adaptive;
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int level;
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};
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struct OpenSubdiv_Converter;
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namespace blender::opensubdiv {
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class TopologyRefinerImpl {
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public:
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// NOTE: Will return nullptr if topology refiner can not be created (for
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// example, when topology is detected to be corrupted or invalid).
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static TopologyRefinerImpl *createFromConverter(
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OpenSubdiv_Converter *converter, const OpenSubdiv_TopologyRefinerSettings &settings);
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TopologyRefinerImpl();
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~TopologyRefinerImpl();
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const OpenSubdiv::Far::TopologyLevel &base_level() const
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{
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return topology_refiner->GetLevel(0);
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}
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// Check whether this topology refiner defines same topology as the given
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// converter.
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// Covers options, geometry, and geometry tags.
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bool isEqualToConverter(const OpenSubdiv_Converter *converter) const;
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OpenSubdiv::Far::TopologyRefiner *topology_refiner;
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// Subdivision settingsa this refiner is created for.
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OpenSubdiv_TopologyRefinerSettings settings;
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// Topology of the mesh which corresponds to the base level.
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//
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// All the indices and values are kept exactly the same as user-defined
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// converter provided them. This allows to easily compare values which might
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// be touched by the refinement process.
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//
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// On a more technical note this allows to easier/faster to compare following
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// things:
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//
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// - Face vertices, where OpenSubdiv could re-arrange them to keep winding
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// uniform.
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//
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// - Vertex crease where OpenSubdiv will force crease for non-manifold or
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// corner vertices.
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MeshTopology base_mesh_topology;
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MEM_CXX_CLASS_ALLOC_FUNCS("TopologyRefinerImpl");
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};
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} // namespace blender::opensubdiv
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#endif // OPENSUBDIV_TOPOLOGY_REFINER_IMPL_H_
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