52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
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// Copyright 2016 The Draco Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the 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 License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#ifndef DRACO_COMPRESSION_ATTRIBUTES_LINEAR_SEQUENCER_H_
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#define DRACO_COMPRESSION_ATTRIBUTES_LINEAR_SEQUENCER_H_
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#include "draco/compression/attributes/points_sequencer.h"
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namespace draco {
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// A simple sequencer that generates a linear sequence [0, num_points - 1].
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// I.e., the order of the points is preserved for the input data.
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class LinearSequencer : public PointsSequencer {
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public:
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explicit LinearSequencer(int32_t num_points) : num_points_(num_points) {}
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bool UpdatePointToAttributeIndexMapping(PointAttribute *attribute) override {
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attribute->SetIdentityMapping();
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return true;
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}
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protected:
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bool GenerateSequenceInternal() override {
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if (num_points_ < 0) {
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return false;
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}
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out_point_ids()->resize(num_points_);
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for (int i = 0; i < num_points_; ++i) {
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out_point_ids()->at(i) = PointIndex(i);
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}
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return true;
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}
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private:
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int32_t num_points_;
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};
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} // namespace draco
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#endif // DRACO_COMPRESSION_ATTRIBUTES_LINEAR_SEQUENCER_H_
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