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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.
//
#include "draco/io/mesh_io.h"
#include <fstream>
#include "draco/io/file_utils.h"
#include "draco/io/obj_decoder.h"
#include "draco/io/ply_decoder.h"
namespace draco {
StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name) {
const Options options;
return ReadMeshFromFile(file_name, options);
}
StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name,
bool use_metadata) {
Options options;
options.SetBool("use_metadata", use_metadata);
return ReadMeshFromFile(file_name, options);
}
StatusOr<std::unique_ptr<Mesh>> ReadMeshFromFile(const std::string &file_name,
const Options &options) {
std::unique_ptr<Mesh> mesh(new Mesh());
// Analyze file extension.
const std::string extension = LowercaseFileExtension(file_name);
if (extension == "obj") {
// Wavefront OBJ file format.
ObjDecoder obj_decoder;
obj_decoder.set_use_metadata(options.GetBool("use_metadata", false));
const Status obj_status = obj_decoder.DecodeFromFile(file_name, mesh.get());
if (!obj_status.ok())
return obj_status;
return std::move(mesh);
}
if (extension == "ply") {
// Wavefront PLY file format.
PlyDecoder ply_decoder;
DRACO_RETURN_IF_ERROR(ply_decoder.DecodeFromFile(file_name, mesh.get()));
return std::move(mesh);
}
// Otherwise not an obj file. Assume the file was encoded with one of the
// draco encoding methods.
std::ifstream is(file_name.c_str(), std::ios::binary);
if (!is)
return Status(Status::DRACO_ERROR, "Invalid input stream.");
if (!ReadMeshFromStream(&mesh, is).good())
return Status(Status::DRACO_ERROR,
"Unknown error."); // Error reading the stream.
return std::move(mesh);
}
} // namespace draco
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