Hand through intensities into the generated PLY - if they exist. (#885)
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655bd65abc
commit
c212bbb698
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@ -32,12 +32,15 @@ namespace {
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// Writes the PLY header claiming 'num_points' will follow it into
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// 'output_file'.
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void WriteBinaryPlyHeader(const bool has_color, const int64 num_points,
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void WriteBinaryPlyHeader(const bool has_color, const bool has_intensities,
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const int64 num_points,
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FileWriter* const file_writer) {
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std::string color_header = !has_color ? ""
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const std::string color_header = !has_color ? ""
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: "property uchar red\n"
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"property uchar green\n"
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"property uchar blue\n";
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const std::string intensity_header =
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!has_intensities ? "" : "property float intensity\n";
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std::ostringstream stream;
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stream << "ply\n"
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<< "format binary_little_endian 1.0\n"
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@ -47,13 +50,14 @@ void WriteBinaryPlyHeader(const bool has_color, const int64 num_points,
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<< "property float x\n"
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<< "property float y\n"
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<< "property float z\n"
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<< color_header << "end_header\n";
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<< color_header << intensity_header << "end_header\n";
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const std::string out = stream.str();
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CHECK(file_writer->WriteHeader(out.data(), out.size()));
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}
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void WriteBinaryPlyPointCoordinate(const Eigen::Vector3f& point,
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FileWriter* const file_writer) {
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// TODO(sirver): This ignores endianness.
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char buffer[12];
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memcpy(buffer, &point[0], sizeof(float));
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memcpy(buffer + 4, &point[1], sizeof(float));
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@ -61,6 +65,13 @@ void WriteBinaryPlyPointCoordinate(const Eigen::Vector3f& point,
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CHECK(file_writer->Write(buffer, 12));
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}
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void WriteBinaryIntensity(const float intensity,
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FileWriter* const file_writer) {
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// TODO(sirver): This ignores endianness.
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CHECK(file_writer->Write(reinterpret_cast<const char*>(&intensity),
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sizeof(float)));
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}
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void WriteBinaryPlyPointColor(const Uint8Color& color,
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FileWriter* const file_writer) {
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CHECK(file_writer->Write(reinterpret_cast<const char*>(color.data()),
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@ -86,7 +97,7 @@ PlyWritingPointsProcessor::PlyWritingPointsProcessor(
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file_(std::move(file_writer)) {}
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PointsProcessor::FlushResult PlyWritingPointsProcessor::Flush() {
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WriteBinaryPlyHeader(has_colors_, num_points_, file_.get());
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WriteBinaryPlyHeader(has_colors_, has_intensities_, num_points_, file_.get());
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CHECK(file_->Close()) << "Closing PLY file_writer failed.";
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switch (next_->Flush()) {
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@ -108,7 +119,8 @@ void PlyWritingPointsProcessor::Process(std::unique_ptr<PointsBatch> batch) {
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if (num_points_ == 0) {
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has_colors_ = !batch->colors.empty();
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WriteBinaryPlyHeader(has_colors_, 0, file_.get());
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has_intensities_ = !batch->intensities.empty();
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WriteBinaryPlyHeader(has_colors_, has_intensities_, 0, file_.get());
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}
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if (has_colors_) {
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CHECK_EQ(batch->points.size(), batch->colors.size())
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@ -116,12 +128,21 @@ void PlyWritingPointsProcessor::Process(std::unique_ptr<PointsBatch> batch) {
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"frame_id: "
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<< batch->frame_id;
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}
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if (has_intensities_) {
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CHECK_EQ(batch->points.size(), batch->intensities.size())
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<< "First PointsBatch had intensities, but encountered one without. "
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"frame_id: "
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<< batch->frame_id;
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}
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for (size_t i = 0; i < batch->points.size(); ++i) {
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WriteBinaryPlyPointCoordinate(batch->points[i], file_.get());
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if (has_colors_) {
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WriteBinaryPlyPointColor(ToUint8Color(batch->colors[i]), file_.get());
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}
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if (has_intensities_) {
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WriteBinaryIntensity(batch->intensities[i], file_.get());
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}
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++num_points_;
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}
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next_->Process(std::move(batch));
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@ -46,6 +46,7 @@ class PlyWritingPointsProcessor : public PointsProcessor {
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int64 num_points_;
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bool has_colors_;
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bool has_intensities_;
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std::unique_ptr<FileWriter> file_;
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};
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