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/* SPDX-License-Identifier: Apache-2.0 */
#include <gtest/gtest.h>
#include "BKE_appdir.h"
#include "testing/testing.h"
#include "obj_import_file_reader.hh"
namespace blender::io::obj {
class obj_mtl_parser_test : public testing::Test {
public:
void check_string(const char *text, const MTLMaterial *expect, size_t expect_count)
{
BKE_tempdir_init(nullptr);
std::string tmp_dir = BKE_tempdir_base();
std::string tmp_file_name = "mtl_test.mtl";
std::string tmp_file_path = tmp_dir + "/" + tmp_file_name;
FILE *tmp_file = BLI_fopen(tmp_file_path.c_str(), "wb");
fputs(text, tmp_file);
fclose(tmp_file);
check_impl(tmp_file_name, tmp_dir, expect, expect_count);
BLI_delete(tmp_file_path.c_str(), false, false);
}
void check(const char *file, const MTLMaterial *expect, size_t expect_count)
{
std::string obj_dir = blender::tests::flags_test_asset_dir() + "/io_tests/obj/";
check_impl(file, obj_dir, expect, expect_count);
}
void check_impl(StringRefNull mtl_file_path,
StringRefNull file_dir,
const MTLMaterial *expect,
size_t expect_count)
{
MTLParser parser(mtl_file_path, file_dir + "dummy.obj");
Map<std::string, std::unique_ptr<MTLMaterial>> materials;
parser.parse_and_store(materials);
for (int i = 0; i < expect_count; ++i) {
const MTLMaterial &exp = expect[i];
if (!materials.contains(exp.name)) {
fprintf(stderr, "Material '%s' was expected in parsed result\n", exp.name.c_str());
ADD_FAILURE();
continue;
}
const MTLMaterial &got = *materials.lookup(exp.name);
const float tol = 0.0001f;
EXPECT_V3_NEAR(exp.Ka, got.Ka, tol);
EXPECT_V3_NEAR(exp.Kd, got.Kd, tol);
EXPECT_V3_NEAR(exp.Ks, got.Ks, tol);
EXPECT_V3_NEAR(exp.Ke, got.Ke, tol);
EXPECT_NEAR(exp.Ns, got.Ns, tol);
EXPECT_NEAR(exp.Ni, got.Ni, tol);
EXPECT_NEAR(exp.d, got.d, tol);
EXPECT_NEAR(exp.map_Bump_strength, got.map_Bump_strength, tol);
EXPECT_EQ(exp.illum, got.illum);
for (const auto &it : exp.texture_maps.items()) {
const tex_map_XX &exp_tex = it.value;
const tex_map_XX &got_tex = got.texture_maps.lookup(it.key);
EXPECT_STREQ(exp_tex.image_path.c_str(), got_tex.image_path.c_str());
EXPECT_V3_NEAR(exp_tex.translation, got_tex.translation, tol);
EXPECT_V3_NEAR(exp_tex.scale, got_tex.scale, tol);
EXPECT_EQ(exp_tex.projection_type, got_tex.projection_type);
}
}
EXPECT_EQ(materials.size(), expect_count);
}
};
TEST_F(obj_mtl_parser_test, string_newlines_whitespace)
{
const char *text =
"# a comment\n"
" # indented comment\n"
"# comment with CRLF line ending\r\n"
"\r\n"
"newmtl simple\n"
"Ka 0.1 0.2 0.3\n"
"illum 4\n"
"newmtl\ttab_indentation\n"
"Kd\t \t0.2 0.3\t0.4 \t \n"
"newmtl space_after_name \t \n"
"Ks 0.4 0.5 0.6\n"
"newmtl space_before_name\n"
"newmtl indented_values\n"
" Ka 0.5 0.6 0.7\n"
"\t\t\tKd 0.6 0.7 0.8\n"
"newmtl crlf_ending\r\n"
"Ns 5.0\r\n"
"map_Kd sometex_d.png\r\n"
"map_Ks sometex_s_spaces_after_name.png \t \r\n";
MTLMaterial mat[6];
mat[0].name = "simple";
mat[0].Ka = {0.1f, 0.2f, 0.3f};
mat[0].illum = 4;
mat[1].name = "tab_indentation";
mat[1].Kd = {0.2f, 0.3f, 0.4f};
mat[2].name = "space_after_name";
mat[2].Ks = {0.4f, 0.5f, 0.6f};
mat[3].name = "space_before_name";
mat[4].name = "indented_values";
mat[4].Ka = {0.5f, 0.6f, 0.7f};
mat[4].Kd = {0.6f, 0.7f, 0.8f};
mat[5].name = "crlf_ending";
mat[5].Ns = 5.0f;
mat[5].tex_map_of_type(eMTLSyntaxElement::map_Kd).image_path = "sometex_d.png";
mat[5].tex_map_of_type(eMTLSyntaxElement::map_Ks).image_path = "sometex_s_spaces_after_name.png";
check_string(text, mat, ARRAY_SIZE(mat));
}
TEST_F(obj_mtl_parser_test, cube)
{
MTLMaterial mat;
mat.name = "red";
mat.Ka = {0.2f, 0.2f, 0.2f};
mat.Kd = {1, 0, 0};
check("cube.mtl", &mat, 1);
}
TEST_F(obj_mtl_parser_test, all_objects)
{
MTLMaterial mat[7];
for (auto &m : mat) {
m.Ka = {1, 1, 1};
m.Ks = {0.5f, 0.5f, 0.5f};
m.Ke = {0, 0, 0};
m.Ns = 250;
m.Ni = 1;
m.d = 1;
m.illum = 2;
}
mat[0].name = "Blue";
mat[0].Kd = {0, 0, 1};
mat[1].name = "BlueDark";
mat[1].Kd = {0, 0, 0.5f};
mat[2].name = "Green";
mat[2].Kd = {0, 1, 0};
mat[3].name = "GreenDark";
mat[3].Kd = {0, 0.5f, 0};
mat[4].name = "Material";
mat[4].Kd = {0.8f, 0.8f, 0.8f};
mat[5].name = "Red";
mat[5].Kd = {1, 0, 0};
mat[6].name = "RedDark";
mat[6].Kd = {0.5f, 0, 0};
check("all_objects.mtl", mat, ARRAY_SIZE(mat));
}
TEST_F(obj_mtl_parser_test, materials)
{
MTLMaterial mat[5];
mat[0].name = "no_textures_red";
mat[0].Ka = {0.3f, 0.3f, 0.3f};
mat[0].Kd = {0.8f, 0.3f, 0.1f};
mat[0].Ns = 5.624998f;
mat[1].name = "four_maps";
mat[1].Ka = {1, 1, 1};
mat[1].Kd = {0.8f, 0.8f, 0.8f};
mat[1].Ks = {0.5f, 0.5f, 0.5f};
mat[1].Ke = {0, 0, 0};
mat[1].Ns = 1000;
mat[1].Ni = 1.45f;
mat[1].d = 1;
mat[1].illum = 2;
mat[1].map_Bump_strength = 1;
{
tex_map_XX &kd = mat[1].tex_map_of_type(eMTLSyntaxElement::map_Kd);
kd.image_path = "texture.png";
tex_map_XX &ns = mat[1].tex_map_of_type(eMTLSyntaxElement::map_Ns);
ns.image_path = "sometexture_Roughness.png";
tex_map_XX &refl = mat[1].tex_map_of_type(eMTLSyntaxElement::map_refl);
refl.image_path = "sometexture_Metallic.png";
tex_map_XX &bump = mat[1].tex_map_of_type(eMTLSyntaxElement::map_Bump);
bump.image_path = "sometexture_Normal.png";
}
mat[2].name = "Clay";
mat[2].Ka = {1, 1, 1};
mat[2].Kd = {0.8f, 0.682657f, 0.536371f};
mat[2].Ks = {0.5f, 0.5f, 0.5f};
mat[2].Ke = {0, 0, 0};
mat[2].Ns = 440.924042f;
mat[2].Ni = 1.45f;
mat[2].d = 1;
mat[2].illum = 2;
mat[3].name = "Hat";
mat[3].Ka = {1, 1, 1};
mat[3].Kd = {0.8f, 0.8f, 0.8f};
mat[3].Ks = {0.5f, 0.5f, 0.5f};
mat[3].Ns = 800;
mat[3].map_Bump_strength = 0.5f;
{
tex_map_XX &kd = mat[3].tex_map_of_type(eMTLSyntaxElement::map_Kd);
kd.image_path = "someHatTexture_BaseColor.jpg";
tex_map_XX &ns = mat[3].tex_map_of_type(eMTLSyntaxElement::map_Ns);
ns.image_path = "someHatTexture_Roughness.jpg";
tex_map_XX &refl = mat[3].tex_map_of_type(eMTLSyntaxElement::map_refl);
refl.image_path = "someHatTexture_Metalness.jpg";
tex_map_XX &bump = mat[3].tex_map_of_type(eMTLSyntaxElement::map_Bump);
bump.image_path = "someHatTexture_Normal.jpg";
}
mat[4].name = "Parser_Test";
mat[4].Ka = {0.1f, 0.2f, 0.3f};
mat[4].Kd = {0.4f, 0.5f, 0.6f};
mat[4].Ks = {0.7f, 0.8f, 0.9f};
mat[4].illum = 6;
mat[4].Ns = 15.5;
mat[4].Ni = 1.5;
mat[4].d = 0.5;
mat[4].map_Bump_strength = 0.1f;
{
tex_map_XX &kd = mat[4].tex_map_of_type(eMTLSyntaxElement::map_Kd);
kd.image_path = "sometex_d.png";
tex_map_XX &ns = mat[4].tex_map_of_type(eMTLSyntaxElement::map_Ns);
ns.image_path = "sometex_ns.psd";
tex_map_XX &refl = mat[4].tex_map_of_type(eMTLSyntaxElement::map_refl);
refl.image_path = "clouds.tiff";
refl.scale = {1.5f, 2.5f, 3.5f};
refl.translation = {4.5f, 5.5f, 6.5f};
refl.projection_type = SHD_PROJ_SPHERE;
tex_map_XX &bump = mat[4].tex_map_of_type(eMTLSyntaxElement::map_Bump);
bump.image_path = "somebump.tga";
bump.scale = {3, 4, 5};
}
check("materials.mtl", mat, ARRAY_SIZE(mat));
}
} // namespace blender::io::obj
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