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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.
//
#include "draco/compression/attributes/sequential_normal_attribute_encoder.h"
#include "draco/compression/attributes/normal_compression_utils.h"
namespace draco {
bool SequentialNormalAttributeEncoder::Init(PointCloudEncoder *encoder,
int attribute_id) {
if (!SequentialIntegerAttributeEncoder::Init(encoder, attribute_id))
return false;
// Currently this encoder works only for 3-component normal vectors.
if (attribute()->num_components() != 3) {
return false;
}
// Initialize AttributeOctahedronTransform.
const int quantization_bits = encoder->options()->GetAttributeInt(
attribute_id, "quantization_bits", -1);
if (quantization_bits < 1) {
return false;
}
attribute_octahedron_transform_.SetParameters(quantization_bits);
return true;
}
bool SequentialNormalAttributeEncoder::EncodeDataNeededByPortableTransform(
EncoderBuffer *out_buffer) {
return attribute_octahedron_transform_.EncodeParameters(out_buffer);
}
bool SequentialNormalAttributeEncoder::PrepareValues(
const std::vector<PointIndex> &point_ids, int num_points) {
SetPortableAttribute(
attribute_octahedron_transform_.GeneratePortableAttribute(
*(attribute()), point_ids, num_points));
return true;
}
} // namespace draco
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