godot/modules/gltf/editor/editor_scene_importer_fbx.cpp

/**************************************************************************/
/*  editor_scene_importer_fbx.cpp                                         */
/**************************************************************************/
/*                         This file is part of:                          */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "editor_scene_importer_fbx.h"

#ifdef TOOLS_ENABLED

#include "../gltf_document.h"

#include "core/config/project_settings.h"
#include "editor/editor_settings.h"
#include "main/main.h"

uint32_t EditorSceneFormatImporterFBX::get_import_flags() const {
	return ImportFlags::IMPORT_SCENE | ImportFlags::IMPORT_ANIMATION;
}

void EditorSceneFormatImporterFBX::get_extensions(List<String> *r_extensions) const {
	r_extensions->push_back("fbx");
}

Node *EditorSceneFormatImporterFBX::import_scene(const String &p_path, uint32_t p_flags,
		const HashMap<StringName, Variant> &p_options,
		List<String> *r_missing_deps, Error *r_err) {
	// Get global paths for source and sink.

	// Don't use `c_escape()` as it can generate broken paths. These paths will be
	// enclosed in double quotes by OS::execute(), so we only need to escape those.
	// `c_escape_multiline()` seems to do this (escapes `\` and `"` only).
	const String source_global = ProjectSettings::get_singleton()->globalize_path(p_path).c_escape_multiline();
	const String sink = ProjectSettings::get_singleton()->get_imported_files_path().path_join(
			vformat("%s-%s.glb", p_path.get_file().get_basename(), p_path.md5_text()));
	const String sink_global = ProjectSettings::get_singleton()->globalize_path(sink).c_escape_multiline();

	// Run fbx2gltf.

	String fbx2gltf_path = EDITOR_GET("filesystem/import/fbx/fbx2gltf_path");

	List<String> args;
	args.push_back("--pbr-metallic-roughness");
	args.push_back("--input");
	args.push_back(source_global);
	args.push_back("--output");
	args.push_back(sink_global);
	args.push_back("--binary");

	String standard_out;
	int ret;
	OS::get_singleton()->execute(fbx2gltf_path, args, &standard_out, &ret, true);
	print_verbose(fbx2gltf_path);
	print_verbose(standard_out);

	if (ret != 0) {
		if (r_err) {
			*r_err = ERR_SCRIPT_FAILED;
		}
		ERR_PRINT(vformat("FBX conversion to glTF failed with error: %d.", ret));
		return nullptr;
	}

	// Import the generated glTF.

	// Use GLTFDocument instead of glTF importer to keep image references.
	Ref<GLTFDocument> gltf;
	gltf.instantiate();
	Ref<GLTFState> state;
	state.instantiate();
	print_verbose(vformat("glTF path: %s", sink));
	Error err = gltf->append_from_file(sink, state, p_flags);
	if (err != OK) {
		if (r_err) {
			*r_err = FAILED;
		}
		return nullptr;
	}

#ifndef DISABLE_DEPRECATED
	bool trimming = p_options.has("animation/trimming") ? (bool)p_options["animation/trimming"] : false;
	bool remove_immutable = p_options.has("animation/remove_immutable_tracks") ? (bool)p_options["animation/remove_immutable_tracks"] : true;
	return gltf->generate_scene(state, (float)p_options["animation/fps"], trimming, remove_immutable);
#else
	return gltf->generate_scene(state, (float)p_options["animation/fps"], (bool)p_options["animation/trimming"], (bool)p_options["animation/remove_immutable_tracks"]);
#endif
}

Variant EditorSceneFormatImporterFBX::get_option_visibility(const String &p_path, bool p_for_animation,
		const String &p_option, const HashMap<StringName, Variant> &p_options) {
	return true;
}

void EditorSceneFormatImporterFBX::get_import_options(const String &p_path,
		List<ResourceImporter::ImportOption> *r_options) {
}

bool EditorFileSystemImportFormatSupportQueryFBX::is_active() const {
	String fbx2gltf_path = EDITOR_GET("filesystem/import/fbx/fbx2gltf_path");
	return !FileAccess::exists(fbx2gltf_path);
}

Vector<String> EditorFileSystemImportFormatSupportQueryFBX::get_file_extensions() const {
	Vector<String> ret;
	ret.push_back("fbx");
	return ret;
}

bool EditorFileSystemImportFormatSupportQueryFBX::query() {
	FBXImporterManager::get_singleton()->show_dialog(true);

	while (true) {
		OS::get_singleton()->delay_usec(1);
		DisplayServer::get_singleton()->process_events();
		Main::iteration();
		if (!FBXImporterManager::get_singleton()->is_visible()) {
			break;
		}
	}

	return false;
}

#endif // TOOLS_ENABLED