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Diffstat (limited to 'extern/draco/dracoenc/src/draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_geometric_normal_predictor_base.h')
-rw-r--r-- | extern/draco/dracoenc/src/draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_geometric_normal_predictor_base.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/extern/draco/dracoenc/src/draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_geometric_normal_predictor_base.h b/extern/draco/dracoenc/src/draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_geometric_normal_predictor_base.h new file mode 100644 index 00000000000..9a26551decf --- /dev/null +++ b/extern/draco/dracoenc/src/draco/compression/attributes/prediction_schemes/mesh_prediction_scheme_geometric_normal_predictor_base.h @@ -0,0 +1,94 @@ +// Copyright 2017 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_ATTRIBUTES_PREDICTION_SCHEMES_MESH_PREDICTION_SCHEME_GEOMETRIC_NORMAL_PREDICTOR_BASE_H_ +#define DRACO_COMPRESSION_ATTRIBUTES_PREDICTION_SCHEMES_MESH_PREDICTION_SCHEME_GEOMETRIC_NORMAL_PREDICTOR_BASE_H_ + +#include <math.h> + +#include "draco/attributes/point_attribute.h" +#include "draco/compression/attributes/normal_compression_utils.h" +#include "draco/compression/config/compression_shared.h" +#include "draco/core/math_utils.h" +#include "draco/core/vector_d.h" +#include "draco/mesh/corner_table.h" +#include "draco/mesh/corner_table_iterators.h" + +namespace draco { + +// Base class for geometric normal predictors using position attribute. +template <typename DataTypeT, class TransformT, class MeshDataT> +class MeshPredictionSchemeGeometricNormalPredictorBase { + protected: + explicit MeshPredictionSchemeGeometricNormalPredictorBase(const MeshDataT &md) + : pos_attribute_(nullptr), + entry_to_point_id_map_(nullptr), + mesh_data_(md) {} + virtual ~MeshPredictionSchemeGeometricNormalPredictorBase() {} + + public: + void SetPositionAttribute(const PointAttribute &position_attribute) { + pos_attribute_ = &position_attribute; + } + void SetEntryToPointIdMap(const PointIndex *map) { + entry_to_point_id_map_ = map; + } + bool IsInitialized() const { + if (pos_attribute_ == nullptr) + return false; + if (entry_to_point_id_map_ == nullptr) + return false; + return true; + } + + virtual bool SetNormalPredictionMode(NormalPredictionMode mode) = 0; + virtual NormalPredictionMode GetNormalPredictionMode() const { + return normal_prediction_mode_; + } + + protected: + VectorD<int64_t, 3> GetPositionForDataId(int data_id) const { + DRACO_DCHECK(this->IsInitialized()); + const auto point_id = entry_to_point_id_map_[data_id]; + const auto pos_val_id = pos_attribute_->mapped_index(point_id); + VectorD<int64_t, 3> pos; + pos_attribute_->ConvertValue(pos_val_id, &pos[0]); + return pos; + } + VectorD<int64_t, 3> GetPositionForCorner(CornerIndex ci) const { + DRACO_DCHECK(this->IsInitialized()); + const auto corner_table = mesh_data_.corner_table(); + const auto vert_id = corner_table->Vertex(ci).value(); + const auto data_id = mesh_data_.vertex_to_data_map()->at(vert_id); + return GetPositionForDataId(data_id); + } + VectorD<int32_t, 2> GetOctahedralCoordForDataId(int data_id, + const DataTypeT *data) const { + DRACO_DCHECK(this->IsInitialized()); + const int data_offset = data_id * 2; + return VectorD<int32_t, 2>(data[data_offset], data[data_offset + 1]); + } + // Computes predicted octahedral coordinates on a given corner. + virtual void ComputePredictedValue(CornerIndex corner_id, + DataTypeT *prediction) = 0; + + const PointAttribute *pos_attribute_; + const PointIndex *entry_to_point_id_map_; + MeshDataT mesh_data_; + NormalPredictionMode normal_prediction_mode_; +}; + +} // namespace draco + +#endif // DRACO_COMPRESSION_ATTRIBUTES_PREDICTION_SCHEMES_MESH_PREDICTION_SCHEME_GEOMETRIC_NORMAL_PREDICTOR_BASE_H_ |