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// Copyright 2016 The Draco Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#ifndef DRACO_COMPRESSION_MESH_MESH_EDGEBREAKER_ENCODER_H_
#define DRACO_COMPRESSION_MESH_MESH_EDGEBREAKER_ENCODER_H_
#include <unordered_map>
#include "draco/compression/mesh/mesh_edgebreaker_encoder_impl_interface.h"
#include "draco/compression/mesh/mesh_edgebreaker_shared.h"
#include "draco/compression/mesh/mesh_encoder.h"
#include "draco/mesh/corner_table.h"
namespace draco {
// Class implements the edge breaker geometry compression method as described
// in "3D Compression Made Simple: Edgebreaker on a Corner-Table" by Rossignac
// at al.'01. http://www.cc.gatech.edu/~jarek/papers/CornerTableSMI.pdf
class MeshEdgebreakerEncoder : public MeshEncoder {
public:
MeshEdgebreakerEncoder();
const CornerTable *GetCornerTable() const override {
return impl_->GetCornerTable();
}
const MeshAttributeCornerTable *GetAttributeCornerTable(
int att_id) const override {
return impl_->GetAttributeCornerTable(att_id);
}
const MeshAttributeIndicesEncodingData *GetAttributeEncodingData(
int att_id) const override {
return impl_->GetAttributeEncodingData(att_id);
}
uint8_t GetEncodingMethod() const override {
return MESH_EDGEBREAKER_ENCODING;
}
protected:
bool InitializeEncoder() override;
Status EncodeConnectivity() override;
bool GenerateAttributesEncoder(int32_t att_id) override;
bool EncodeAttributesEncoderIdentifier(int32_t att_encoder_id) override;
void ComputeNumberOfEncodedPoints() override;
void ComputeNumberOfEncodedFaces() override;
private:
// The actual implementation of the edge breaker method. The implementations
// are in general specializations of a template class
// MeshEdgebreakerEncoderImpl where the template arguments control encoding
// of the connectivity data. The actual implementation is selected in this
// class based on the provided encoding options. Because this choice is done
// in run-time, the actual implementation has to be hidden behind the
// abstract interface MeshEdgebreakerEncoderImplInterface.
std::unique_ptr<MeshEdgebreakerEncoderImplInterface> impl_;
};
} // namespace draco
#endif // DRACO_COMPRESSION_MESH_MESH_EDGEBREAKER_ENCODER_H_
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