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https://git.mirrors.martin98.com/https://github.com/google/draco
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56 lines
1.7 KiB
C++
56 lines
1.7 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 "io/mesh_io.h"
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#include <fstream>
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#include "io/obj_decoder.h"
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#include "io/parser_utils.h"
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#include "io/ply_decoder.h"
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namespace draco {
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std::unique_ptr<Mesh> ReadMeshFromFile(const std::string &file_name) {
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std::unique_ptr<Mesh> mesh(new Mesh());
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// Analyze file extension.
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const std::string extension =
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parser::ToLower(file_name.substr(file_name.size() - 4));
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if (extension == ".obj") {
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// Wavefront OBJ file format.
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ObjDecoder obj_decoder;
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if (!obj_decoder.DecodeFromFile(file_name, mesh.get()))
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return nullptr;
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return mesh;
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}
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if (extension == ".ply") {
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// Wavefront PLY file format.
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PlyDecoder ply_decoder;
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if (!ply_decoder.DecodeFromFile(file_name, mesh.get()))
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return nullptr;
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return mesh;
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}
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// Otherwise not an obj file. Assume the file was encoded with one of the
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// draco encoding methods.
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std::ifstream is(file_name.c_str(), std::ios::binary);
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if (!is)
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return nullptr;
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if (!ReadMeshFromStream(&mesh, is).good())
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return nullptr; // Error reading the stream.
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return mesh;
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}
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} // namespace draco
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