9738ebcda0
-Make sure materials are named in OBJ importer, so they can be saved outside as resources.
497 lines
16 KiB
C++
497 lines
16 KiB
C++
/*************************************************************************/
|
|
/* resource_importer_obj.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#include "resource_importer_obj.h"
|
|
|
|
#include "io/resource_saver.h"
|
|
#include "os/file_access.h"
|
|
#include "scene/3d/mesh_instance.h"
|
|
#include "scene/3d/spatial.h"
|
|
#include "scene/resources/mesh.h"
|
|
#include "scene/resources/surface_tool.h"
|
|
|
|
uint32_t EditorOBJImporter::get_import_flags() const {
|
|
|
|
return IMPORT_SCENE;
|
|
}
|
|
|
|
static Error _parse_material_library(const String &p_path, Map<String, Ref<SpatialMaterial> > &material_map, List<String> *r_missing_deps) {
|
|
|
|
FileAccessRef f = FileAccess::open(p_path, FileAccess::READ);
|
|
ERR_FAIL_COND_V(!f, ERR_CANT_OPEN);
|
|
|
|
Ref<SpatialMaterial> current;
|
|
String current_name;
|
|
String base_path = p_path.get_base_dir();
|
|
while (true) {
|
|
|
|
String l = f->get_line().strip_edges();
|
|
|
|
if (l.begins_with("newmtl ")) {
|
|
//vertex
|
|
|
|
current_name = l.replace("newmtl", "").strip_edges();
|
|
current.instance();
|
|
current->set_name(current_name);
|
|
material_map[current_name] = current;
|
|
} else if (l.begins_with("Ka ")) {
|
|
//uv
|
|
print_line("Warning: Ambient light for material '" + current_name + "' is ignored in PBR");
|
|
|
|
} else if (l.begins_with("Kd ")) {
|
|
//normal
|
|
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
|
|
Vector<String> v = l.split(" ", false);
|
|
ERR_FAIL_COND_V(v.size() < 4, ERR_INVALID_DATA);
|
|
Color c = current->get_albedo();
|
|
c.r = v[1].to_float();
|
|
c.g = v[2].to_float();
|
|
c.b = v[3].to_float();
|
|
current->set_albedo(c);
|
|
} else if (l.begins_with("Ks ")) {
|
|
//normal
|
|
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
|
|
Vector<String> v = l.split(" ", false);
|
|
ERR_FAIL_COND_V(v.size() < 4, ERR_INVALID_DATA);
|
|
float r = v[1].to_float();
|
|
float g = v[2].to_float();
|
|
float b = v[3].to_float();
|
|
float metalness = MAX(r, MAX(g, b));
|
|
current->set_metallic(metalness);
|
|
} else if (l.begins_with("Ns ")) {
|
|
//normal
|
|
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
|
|
Vector<String> v = l.split(" ", false);
|
|
ERR_FAIL_COND_V(v.size() != 2, ERR_INVALID_DATA);
|
|
float s = v[1].to_float();
|
|
current->set_metallic((1000.0 - s) / 1000.0);
|
|
} else if (l.begins_with("d ")) {
|
|
//normal
|
|
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
|
|
Vector<String> v = l.split(" ", false);
|
|
ERR_FAIL_COND_V(v.size() != 2, ERR_INVALID_DATA);
|
|
float d = v[1].to_float();
|
|
Color c = current->get_albedo();
|
|
c.a = d;
|
|
current->set_albedo(c);
|
|
if (c.a < 0.99) {
|
|
current->set_feature(SpatialMaterial::FEATURE_TRANSPARENT, true);
|
|
}
|
|
} else if (l.begins_with("Tr ")) {
|
|
//normal
|
|
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
|
|
Vector<String> v = l.split(" ", false);
|
|
ERR_FAIL_COND_V(v.size() != 2, ERR_INVALID_DATA);
|
|
float d = v[1].to_float();
|
|
Color c = current->get_albedo();
|
|
c.a = 1.0 - d;
|
|
current->set_albedo(c);
|
|
if (c.a < 0.99) {
|
|
current->set_feature(SpatialMaterial::FEATURE_TRANSPARENT, true);
|
|
}
|
|
|
|
} else if (l.begins_with("map_Ka ")) {
|
|
//uv
|
|
print_line("Warning: Ambient light texture for material '" + current_name + "' is ignored in PBR");
|
|
|
|
} else if (l.begins_with("map_Kd ")) {
|
|
//normal
|
|
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
|
|
|
|
String p = l.replace("map_Kd", "").replace("\\", "/").strip_edges();
|
|
String path = base_path.plus_file(p);
|
|
|
|
Ref<Texture> texture = ResourceLoader::load(path);
|
|
|
|
if (texture.is_valid()) {
|
|
current->set_texture(SpatialMaterial::TEXTURE_ALBEDO, texture);
|
|
} else if (r_missing_deps) {
|
|
r_missing_deps->push_back(path);
|
|
}
|
|
|
|
} else if (l.begins_with("map_Ks ")) {
|
|
//normal
|
|
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
|
|
|
|
String p = l.replace("map_Ks", "").replace("\\", "/").strip_edges();
|
|
String path = base_path.plus_file(p);
|
|
|
|
Ref<Texture> texture = ResourceLoader::load(path);
|
|
|
|
if (texture.is_valid()) {
|
|
current->set_texture(SpatialMaterial::TEXTURE_METALLIC, texture);
|
|
} else if (r_missing_deps) {
|
|
r_missing_deps->push_back(path);
|
|
}
|
|
|
|
} else if (l.begins_with("map_Ns ")) {
|
|
//normal
|
|
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
|
|
|
|
String p = l.replace("map_Ns", "").replace("\\", "/").strip_edges();
|
|
String path = base_path.plus_file(p);
|
|
|
|
Ref<Texture> texture = ResourceLoader::load(path);
|
|
|
|
if (texture.is_valid()) {
|
|
current->set_texture(SpatialMaterial::TEXTURE_ROUGHNESS, texture);
|
|
} else if (r_missing_deps) {
|
|
r_missing_deps->push_back(path);
|
|
}
|
|
} else if (l.begins_with("map_bump ")) {
|
|
//normal
|
|
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
|
|
|
|
String p = l.replace("map_bump", "").replace("\\", "/").strip_edges();
|
|
String path = base_path.plus_file(p);
|
|
|
|
Ref<Texture> texture = ResourceLoader::load(path);
|
|
|
|
if (texture.is_valid()) {
|
|
current->set_feature(SpatialMaterial::FEATURE_NORMAL_MAPPING, true);
|
|
current->set_texture(SpatialMaterial::TEXTURE_NORMAL, texture);
|
|
} else if (r_missing_deps) {
|
|
r_missing_deps->push_back(path);
|
|
}
|
|
} else if (f->eof_reached()) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
static Error _parse_obj(const String &p_path, List<Ref<Mesh> > &r_meshes, bool p_single_mesh, bool p_generate_tangents, List<String> *r_missing_deps) {
|
|
|
|
FileAccessRef f = FileAccess::open(p_path, FileAccess::READ);
|
|
|
|
ERR_FAIL_COND_V(!f, ERR_CANT_OPEN);
|
|
|
|
Ref<ArrayMesh> mesh;
|
|
mesh.instance();
|
|
|
|
bool generate_tangents = p_generate_tangents;
|
|
bool flip_faces = false;
|
|
//bool flip_faces = p_options["force/flip_faces"];
|
|
//bool force_smooth = p_options["force/smooth_shading"];
|
|
//bool weld_vertices = p_options["force/weld_vertices"];
|
|
//float weld_tolerance = p_options["force/weld_tolerance"];
|
|
|
|
Vector<Vector3> vertices;
|
|
Vector<Vector3> normals;
|
|
Vector<Vector2> uvs;
|
|
String name;
|
|
|
|
Map<String, Map<String, Ref<SpatialMaterial> > > material_map;
|
|
|
|
Ref<SurfaceTool> surf_tool = memnew(SurfaceTool);
|
|
surf_tool->begin(Mesh::PRIMITIVE_TRIANGLES);
|
|
|
|
String current_material_library;
|
|
String current_material;
|
|
String current_group;
|
|
|
|
while (true) {
|
|
|
|
String l = f->get_line().strip_edges();
|
|
|
|
if (l.begins_with("v ")) {
|
|
//vertex
|
|
Vector<String> v = l.split(" ", false);
|
|
ERR_FAIL_COND_V(v.size() < 4, ERR_FILE_CORRUPT);
|
|
Vector3 vtx;
|
|
vtx.x = v[1].to_float();
|
|
vtx.y = v[2].to_float();
|
|
vtx.z = v[3].to_float();
|
|
vertices.push_back(vtx);
|
|
} else if (l.begins_with("vt ")) {
|
|
//uv
|
|
Vector<String> v = l.split(" ", false);
|
|
ERR_FAIL_COND_V(v.size() < 3, ERR_FILE_CORRUPT);
|
|
Vector2 uv;
|
|
uv.x = v[1].to_float();
|
|
uv.y = 1.0 - v[2].to_float();
|
|
uvs.push_back(uv);
|
|
|
|
} else if (l.begins_with("vn ")) {
|
|
//normal
|
|
Vector<String> v = l.split(" ", false);
|
|
ERR_FAIL_COND_V(v.size() < 4, ERR_FILE_CORRUPT);
|
|
Vector3 nrm;
|
|
nrm.x = v[1].to_float();
|
|
nrm.y = v[2].to_float();
|
|
nrm.z = v[3].to_float();
|
|
normals.push_back(nrm);
|
|
} else if (l.begins_with("f ")) {
|
|
//vertex
|
|
|
|
Vector<String> v = l.split(" ", false);
|
|
ERR_FAIL_COND_V(v.size() < 4, ERR_FILE_CORRUPT);
|
|
|
|
//not very fast, could be sped up
|
|
|
|
Vector<String> face[3];
|
|
face[0] = v[1].split("/");
|
|
face[1] = v[2].split("/");
|
|
ERR_FAIL_COND_V(face[0].size() == 0, ERR_FILE_CORRUPT);
|
|
ERR_FAIL_COND_V(face[0].size() != face[1].size(), ERR_FILE_CORRUPT);
|
|
for (int i = 2; i < v.size() - 1; i++) {
|
|
|
|
face[2] = v[i + 1].split("/");
|
|
ERR_FAIL_COND_V(face[0].size() != face[2].size(), ERR_FILE_CORRUPT);
|
|
for (int j = 0; j < 3; j++) {
|
|
|
|
int idx = j;
|
|
|
|
if (!flip_faces && idx < 2) {
|
|
idx = 1 ^ idx;
|
|
}
|
|
|
|
if (face[idx].size() == 3) {
|
|
int norm = face[idx][2].to_int() - 1;
|
|
if (norm < 0)
|
|
norm += normals.size() + 1;
|
|
ERR_FAIL_INDEX_V(norm, normals.size(), ERR_FILE_CORRUPT);
|
|
surf_tool->add_normal(normals[norm]);
|
|
}
|
|
|
|
if (face[idx].size() >= 2 && face[idx][1] != String()) {
|
|
int uv = face[idx][1].to_int() - 1;
|
|
if (uv < 0)
|
|
uv += uvs.size() + 1;
|
|
ERR_FAIL_INDEX_V(uv, uvs.size(), ERR_FILE_CORRUPT);
|
|
surf_tool->add_uv(uvs[uv]);
|
|
}
|
|
|
|
int vtx = face[idx][0].to_int() - 1;
|
|
if (vtx < 0)
|
|
vtx += vertices.size() + 1;
|
|
ERR_FAIL_INDEX_V(vtx, vertices.size(), ERR_FILE_CORRUPT);
|
|
|
|
Vector3 vertex = vertices[vtx];
|
|
//if (weld_vertices)
|
|
// vertex.snap(Vector3(weld_tolerance, weld_tolerance, weld_tolerance));
|
|
surf_tool->add_vertex(vertex);
|
|
}
|
|
|
|
face[1] = face[2];
|
|
}
|
|
} else if (l.begins_with("s ")) { //smoothing
|
|
String what = l.substr(2, l.length()).strip_edges();
|
|
if (what == "off")
|
|
surf_tool->add_smooth_group(false);
|
|
else
|
|
surf_tool->add_smooth_group(true);
|
|
} else if (/*l.begins_with("g ") ||*/ l.begins_with("usemtl ") || (l.begins_with("o ") || f->eof_reached())) { //commit group to mesh
|
|
//groups are too annoying
|
|
if (surf_tool->get_vertex_array().size()) {
|
|
//another group going on, commit it
|
|
if (normals.size() == 0) {
|
|
surf_tool->generate_normals();
|
|
}
|
|
|
|
if (generate_tangents && uvs.size()) {
|
|
surf_tool->generate_tangents();
|
|
}
|
|
|
|
surf_tool->index();
|
|
|
|
print_line("current material library " + current_material_library + " has " + itos(material_map.has(current_material_library)));
|
|
print_line("current material " + current_material + " has " + itos(material_map.has(current_material_library) && material_map[current_material_library].has(current_material)));
|
|
|
|
if (material_map.has(current_material_library) && material_map[current_material_library].has(current_material)) {
|
|
surf_tool->set_material(material_map[current_material_library][current_material]);
|
|
}
|
|
|
|
mesh = surf_tool->commit(mesh);
|
|
|
|
if (current_material != String()) {
|
|
mesh->surface_set_name(mesh->get_surface_count() - 1, current_material.get_basename());
|
|
} else if (current_group != String()) {
|
|
mesh->surface_set_name(mesh->get_surface_count() - 1, current_group);
|
|
}
|
|
|
|
print_line("Added surface :" + mesh->surface_get_name(mesh->get_surface_count() - 1));
|
|
surf_tool->clear();
|
|
surf_tool->begin(Mesh::PRIMITIVE_TRIANGLES);
|
|
}
|
|
|
|
if (l.begins_with("o ") || f->eof_reached()) {
|
|
|
|
if (!p_single_mesh) {
|
|
mesh->set_name(name);
|
|
r_meshes.push_back(mesh);
|
|
mesh.instance();
|
|
current_group = "";
|
|
current_material = "";
|
|
}
|
|
}
|
|
|
|
if (f->eof_reached()) {
|
|
break;
|
|
}
|
|
|
|
if (l.begins_with("o ")) {
|
|
name = l.substr(2, l.length()).strip_edges();
|
|
}
|
|
|
|
if (l.begins_with("usemtl ")) {
|
|
|
|
current_material = l.replace("usemtl", "").strip_edges();
|
|
}
|
|
|
|
if (l.begins_with("g ")) {
|
|
|
|
current_group = l.substr(2, l.length()).strip_edges();
|
|
}
|
|
|
|
} else if (l.begins_with("mtllib ")) { //parse material
|
|
|
|
current_material_library = l.replace("mtllib", "").strip_edges();
|
|
if (!material_map.has(current_material_library)) {
|
|
Map<String, Ref<SpatialMaterial> > lib;
|
|
Error err = _parse_material_library(current_material_library, lib, r_missing_deps);
|
|
if (err == ERR_CANT_OPEN) {
|
|
String dir = p_path.get_base_dir();
|
|
err = _parse_material_library(dir.plus_file(current_material_library), lib, r_missing_deps);
|
|
}
|
|
if (err == OK) {
|
|
material_map[current_material_library] = lib;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (p_single_mesh) {
|
|
|
|
r_meshes.push_back(mesh);
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
Node *EditorOBJImporter::import_scene(const String &p_path, uint32_t p_flags, int p_bake_fps, List<String> *r_missing_deps, Error *r_err) {
|
|
|
|
List<Ref<Mesh> > meshes;
|
|
|
|
Error err = _parse_obj(p_path, meshes, false, p_flags & IMPORT_GENERATE_TANGENT_ARRAYS, r_missing_deps);
|
|
|
|
if (err != OK) {
|
|
if (r_err) {
|
|
*r_err = err;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
Spatial *scene = memnew(Spatial);
|
|
|
|
for (List<Ref<Mesh> >::Element *E = meshes.front(); E; E = E->next()) {
|
|
|
|
MeshInstance *mi = memnew(MeshInstance);
|
|
mi->set_mesh(E->get());
|
|
mi->set_name(E->get()->get_name());
|
|
scene->add_child(mi);
|
|
mi->set_owner(scene);
|
|
}
|
|
|
|
if (r_err) {
|
|
*r_err = OK;
|
|
}
|
|
|
|
return scene;
|
|
}
|
|
Ref<Animation> EditorOBJImporter::import_animation(const String &p_path, uint32_t p_flags) {
|
|
|
|
return Ref<Animation>();
|
|
}
|
|
|
|
void EditorOBJImporter::get_extensions(List<String> *r_extensions) const {
|
|
|
|
r_extensions->push_back("obj");
|
|
}
|
|
|
|
EditorOBJImporter::EditorOBJImporter() {
|
|
}
|
|
////////////////////////////////////////////////////
|
|
|
|
String ResourceImporterOBJ::get_importer_name() const {
|
|
return "wavefront_obj";
|
|
}
|
|
String ResourceImporterOBJ::get_visible_name() const {
|
|
return "OBJ As Mesh";
|
|
}
|
|
void ResourceImporterOBJ::get_recognized_extensions(List<String> *p_extensions) const {
|
|
|
|
p_extensions->push_back("obj");
|
|
}
|
|
String ResourceImporterOBJ::get_save_extension() const {
|
|
return "mesh";
|
|
}
|
|
String ResourceImporterOBJ::get_resource_type() const {
|
|
return "Mesh";
|
|
}
|
|
|
|
int ResourceImporterOBJ::get_preset_count() const {
|
|
return 0;
|
|
}
|
|
String ResourceImporterOBJ::get_preset_name(int p_idx) const {
|
|
return "";
|
|
}
|
|
|
|
void ResourceImporterOBJ::get_import_options(List<ImportOption> *r_options, int p_preset) const {
|
|
|
|
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "generate_tangents"), true));
|
|
}
|
|
bool ResourceImporterOBJ::get_option_visibility(const String &p_option, const Map<StringName, Variant> &p_options) const {
|
|
|
|
return true;
|
|
}
|
|
|
|
Error ResourceImporterOBJ::import(const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files) {
|
|
|
|
List<Ref<Mesh> > meshes;
|
|
|
|
Error err = _parse_obj(p_source_file, meshes, true, p_options["generate_tangents"], NULL);
|
|
|
|
ERR_FAIL_COND_V(err != OK, err);
|
|
ERR_FAIL_COND_V(meshes.size() != 1, ERR_BUG);
|
|
|
|
String save_path = p_save_path + ".mesh";
|
|
|
|
err = ResourceSaver::save(save_path, meshes.front()->get());
|
|
|
|
ERR_FAIL_COND_V(err != OK, err);
|
|
|
|
r_gen_files->push_back(save_path);
|
|
|
|
return OK;
|
|
}
|
|
|
|
ResourceImporterOBJ::ResourceImporterOBJ() {
|
|
}
|