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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_