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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 <sstream>
#include "draco/core/draco_test_base.h"
#include "draco/core/draco_test_utils.h"
#include "draco/io/obj_decoder.h"
namespace draco {
class ObjDecoderTest : public ::testing::Test {
protected:
template <class Geometry>
std::unique_ptr<Geometry> DecodeObj(const std::string &file_name) const {
return DecodeObj<Geometry>(file_name, false);
}
template <class Geometry>
std::unique_ptr<Geometry> DecodeObj(const std::string &file_name,
bool deduplicate_input_values) const {
const std::string path = GetTestFileFullPath(file_name);
ObjDecoder decoder;
decoder.set_deduplicate_input_values(deduplicate_input_values);
std::unique_ptr<Geometry> geometry(new Geometry());
if (!decoder.DecodeFromFile(path, geometry.get()).ok())
return nullptr;
return geometry;
}
template <class Geometry>
std::unique_ptr<Geometry> DecodeObjWithMetadata(
const std::string &file_name) const {
const std::string path = GetTestFileFullPath(file_name);
ObjDecoder decoder;
decoder.set_use_metadata(true);
std::unique_ptr<Geometry> geometry(new Geometry());
if (!decoder.DecodeFromFile(path, geometry.get()).ok())
return nullptr;
return geometry;
}
void test_decoding(const std::string &file_name) {
const std::unique_ptr<Mesh> mesh(DecodeObj<Mesh>(file_name));
ASSERT_NE(mesh, nullptr) << "Failed to load test model " << file_name;
ASSERT_GT(mesh->num_faces(), 0);
const std::unique_ptr<PointCloud> pc(DecodeObj<PointCloud>(file_name));
ASSERT_NE(pc, nullptr) << "Failed to load test model " << file_name;
ASSERT_GT(pc->num_points(), 0);
}
};
TEST_F(ObjDecoderTest, ExtraVertexOBJ) {
const std::string file_name = "extra_vertex.obj";
test_decoding(file_name);
}
TEST_F(ObjDecoderTest, PartialAttributesOBJ) {
const std::string file_name = "cube_att_partial.obj";
test_decoding(file_name);
}
TEST_F(ObjDecoderTest, SubObjects) {
// Tests loading an Obj with sub objects.
const std::string file_name = "cube_att_sub_o.obj";
const std::unique_ptr<Mesh> mesh(DecodeObj<Mesh>(file_name));
ASSERT_NE(mesh, nullptr) << "Failed to load test model " << file_name;
ASSERT_GT(mesh->num_faces(), 0);
// A sub object attribute should be the fourth attribute of the mesh (in this
// case).
ASSERT_EQ(mesh->num_attributes(), 4);
ASSERT_EQ(mesh->attribute(3)->attribute_type(), GeometryAttribute::GENERIC);
// There should be 3 different sub objects used in the model.
ASSERT_EQ(mesh->attribute(3)->size(), 3);
// Verify that the sub object attribute has unique id == 3.
ASSERT_EQ(mesh->attribute(3)->unique_id(), 3);
}
TEST_F(ObjDecoderTest, SubObjectsWithMetadata) {
// Tests loading an Obj with sub objects.
const std::string file_name = "cube_att_sub_o.obj";
const std::unique_ptr<Mesh> mesh(DecodeObjWithMetadata<Mesh>(file_name));
ASSERT_NE(mesh, nullptr) << "Failed to load test model " << file_name;
ASSERT_GT(mesh->num_faces(), 0);
ASSERT_EQ(mesh->num_attributes(), 4);
ASSERT_EQ(mesh->attribute(3)->attribute_type(), GeometryAttribute::GENERIC);
// There should be 3 different sub objects used in the model.
ASSERT_EQ(mesh->attribute(3)->size(), 3);
// Test material names stored in metadata.
ASSERT_NE(mesh->GetMetadata(), nullptr);
ASSERT_NE(mesh->GetAttributeMetadataByAttributeId(3), nullptr);
int32_t sub_obj_id = 0;
ASSERT_TRUE(mesh->GetAttributeMetadataByAttributeId(3)->GetEntryInt(
"obj2", &sub_obj_id));
ASSERT_EQ(sub_obj_id, 2);
}
TEST_F(ObjDecoderTest, QuadOBJ) {
// Tests loading an Obj with quad faces.
const std::string file_name = "cube_quads.obj";
const std::unique_ptr<Mesh> mesh(DecodeObj<Mesh>(file_name));
ASSERT_NE(mesh, nullptr) << "Failed to load test model " << file_name;
ASSERT_EQ(mesh->num_faces(), 12);
ASSERT_EQ(mesh->num_attributes(), 3);
ASSERT_EQ(mesh->num_points(), 4 * 6); // Four points per quad face.
}
TEST_F(ObjDecoderTest, ComplexPolyOBJ) {
// Tests that we fail to load an obj with complex polygon (expected failure).
const std::string file_name = "invalid/complex_poly.obj";
const std::unique_ptr<Mesh> mesh(DecodeObj<Mesh>(file_name));
ASSERT_EQ(mesh, nullptr);
}
TEST_F(ObjDecoderTest, EmptyNameOBJ) {
// Tests that we load an obj file that has an sub-object defined with an empty
// name.
const std::string file_name = "empty_name.obj";
const std::unique_ptr<Mesh> mesh(DecodeObj<Mesh>(file_name));
ASSERT_NE(mesh, nullptr);
ASSERT_EQ(mesh->num_attributes(), 1);
// Three valid entries in the attribute are expected.
ASSERT_EQ(mesh->attribute(0)->size(), 3);
}
TEST_F(ObjDecoderTest, PointCloudOBJ) {
// Tests that we load an obj file that does not contain any faces.
const std::string file_name = "test_lines.obj";
const std::unique_ptr<Mesh> mesh(DecodeObj<Mesh>(file_name, false));
ASSERT_NE(mesh, nullptr);
ASSERT_EQ(mesh->num_faces(), 0);
ASSERT_EQ(mesh->num_attributes(), 1);
ASSERT_EQ(mesh->attribute(0)->size(), 484);
}
TEST_F(ObjDecoderTest, WrongAttributeMapping) {
// Tests that we load an obj file that contains invalid mapping between
// attribute indices and values. In such case the invalid indices should be
// ignored.
const std::string file_name = "test_wrong_attribute_mapping.obj";
const std::unique_ptr<Mesh> mesh(DecodeObj<Mesh>(file_name, false));
ASSERT_NE(mesh, nullptr);
ASSERT_EQ(mesh->num_faces(), 1);
ASSERT_EQ(mesh->num_attributes(), 1);
ASSERT_EQ(mesh->attribute(0)->size(), 3);
}
TEST_F(ObjDecoderTest, TestObjDecodingAll) {
// test if we can read all obj that are currently in test folder.
test_decoding("bunny_norm.obj");
// test_decoding("complex_poly.obj"); // not supported see test above
test_decoding("cube_att.obj");
test_decoding("cube_att_partial.obj");
test_decoding("cube_att_sub_o.obj");
test_decoding("cube_quads.obj");
test_decoding("cube_subd.obj");
test_decoding("eof_test.obj");
test_decoding("extra_vertex.obj");
test_decoding("mat_test.obj");
test_decoding("one_face_123.obj");
test_decoding("one_face_312.obj");
test_decoding("one_face_321.obj");
test_decoding("sphere.obj");
test_decoding("test_nm.obj");
test_decoding("test_nm_trans.obj");
test_decoding("test_sphere.obj");
test_decoding("three_faces_123.obj");
test_decoding("three_faces_312.obj");
test_decoding("two_faces_123.obj");
test_decoding("two_faces_312.obj");
test_decoding("inf_nan.obj");
}
} // namespace draco
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