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72 lines
2.6 KiB
C++
72 lines
2.6 KiB
C++
// 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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#include "point_cloud/point_cloud_builder.h"
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namespace draco {
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PointCloudBuilder::PointCloudBuilder() {}
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void PointCloudBuilder::Start(PointIndex::ValueType num_points) {
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point_cloud_ = std::unique_ptr<PointCloud>(new PointCloud());
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point_cloud_->set_num_points(num_points);
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}
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int PointCloudBuilder::AddAttribute(GeometryAttribute::Type attribute_type,
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int8_t num_components, DataType data_type) {
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GeometryAttribute ga;
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ga.Init(attribute_type, nullptr, num_components, data_type, false,
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DataTypeLength(data_type) * num_components, 0);
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return point_cloud_->AddAttribute(ga, true, point_cloud_->num_points());
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}
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void PointCloudBuilder::SetAttributeValueForPoint(int att_id,
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PointIndex point_index,
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const void *attribute_value) {
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PointAttribute *const att = point_cloud_->attribute(att_id);
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att->SetAttributeValue(att->mapped_index(point_index), attribute_value);
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}
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void PointCloudBuilder::SetAttributeValuesForAllPoints(
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int att_id, const void *attribute_values, int stride) {
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PointAttribute *const att = point_cloud_->attribute(att_id);
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const int data_stride =
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DataTypeLength(att->data_type()) * att->components_count();
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if (stride == 0)
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stride = data_stride;
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if (stride == data_stride) {
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// Fast copy path.
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att->buffer()->Write(0, attribute_values,
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point_cloud_->num_points() * data_stride);
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} else {
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// Copy attribute entries one by one.
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for (PointIndex i(0); i < point_cloud_->num_points(); ++i) {
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att->SetAttributeValue(
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att->mapped_index(i),
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static_cast<const uint8_t *>(attribute_values) + stride * i.value());
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}
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}
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}
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std::unique_ptr<PointCloud> PointCloudBuilder::Finalize(
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bool deduplicate_points) {
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if (deduplicate_points) {
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point_cloud_->DeduplicateAttributeValues();
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point_cloud_->DeduplicatePointIds();
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}
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return std::move(point_cloud_);
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}
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} // namespace draco
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