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extern/draco/dracoenc/src/draco/point_cloud/point_cloud_builder.h
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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_POINT_CLOUD_POINT_CLOUD_BUILDER_H_ | |||||
| #define DRACO_POINT_CLOUD_POINT_CLOUD_BUILDER_H_ | |||||
| #include "draco/point_cloud/point_cloud.h" | |||||
| namespace draco { | |||||
| // A helper class for constructing PointCloud instances from other data sources. | |||||
| // Usage: | |||||
| // PointCloudBuilder builder; | |||||
| // // Initialize the builder for a given number of points (required). | |||||
| // builder.Start(num_points); | |||||
| // // Specify desired attributes. | |||||
| // int pos_att_id = | |||||
| // builder.AddAttribute(GeometryAttribute::POSITION, 3, DT_FLOAT32); | |||||
| // // Add attribute values. | |||||
| // for (PointIndex i(0); i < num_points; ++i) { | |||||
| // builder.SetAttributeValueForPoint(pos_att_id, i, input_pos[i.value()]); | |||||
| // } | |||||
| // // Get the final PointCloud. | |||||
| // constexpr bool deduplicate_points = false; | |||||
| // std::unique_ptr<PointCloud> pc = builder.Finalize(deduplicate_points); | |||||
| class PointCloudBuilder { | |||||
| public: | |||||
| PointCloudBuilder(); | |||||
| // Starts collecting point cloud data. | |||||
| // The behavior of other functions is undefined before this method is called. | |||||
| void Start(PointIndex::ValueType num_points); | |||||
| int AddAttribute(GeometryAttribute::Type attribute_type, | |||||
| int8_t num_components, DataType data_type); | |||||
| // Sets attribute value for a specific point. | |||||
| // |attribute_value| must contain data in the format specified by the | |||||
| // AddAttribute method. | |||||
| void SetAttributeValueForPoint(int att_id, PointIndex point_index, | |||||
| const void *attribute_value); | |||||
| // Sets attribute values for all points. All the values must be stored in the | |||||
| // input |attribute_values| buffer. |stride| can be used to define the byte | |||||
| // offset between two consecutive attribute values. If |stride| is set to 0, | |||||
| // the stride is automatically computed based on the format of the given | |||||
| // attribute. | |||||
| void SetAttributeValuesForAllPoints(int att_id, const void *attribute_values, | |||||
| int stride); | |||||
| // Finalizes the PointCloud or returns nullptr on error. | |||||
| // If |deduplicate_points| is set to true, the following happens: | |||||
| // 1. Attribute values with duplicate entries are deduplicated. | |||||
| // 2. Point ids that are mapped to the same attribute values are | |||||
| // deduplicated. | |||||
| // Therefore, if |deduplicate_points| is true the final PointCloud can have | |||||
| // a different number of point from the value specified in the Start method. | |||||
| // Once this function is called, the builder becomes invalid and cannot be | |||||
| // used until the method Start() is called again. | |||||
| std::unique_ptr<PointCloud> Finalize(bool deduplicate_points); | |||||
| private: | |||||
| std::unique_ptr<PointCloud> point_cloud_; | |||||
| }; | |||||
| } // namespace draco | |||||
| #endif // DRACO_POINT_CLOUD_POINT_CLOUD_BUILDER_H_ | |||||