1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
// 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_
|
