Merge pull request #47166 from reduz/improve-scene-import

Improved 3D Scene Importer

1 files changed, 1199 insertions, 0 deletions

diff --git a/editor/import/scene_import_settings.cpp b/editor/import/scene_import_settings.cpp
new file mode 100644
index 0000000000..5ae67f413a
--- /dev/null
+++ b/editor/import/scene_import_settings.cpp
@@ -0,0 +1,1199 @@
+/*************************************************************************/
+/*  scene_import_settings.cpp                                            */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2021 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 "scene_import_settings.h"
+#include "editor/editor_node.h"
+#include "editor/editor_scale.h"
+#include "editor/import/scene_importer_mesh_node_3d.h"
+#include "scene/resources/surface_tool.h"
+
+class SceneImportSettingsData : public Object {
+	GDCLASS(SceneImportSettingsData, Object)
+	friend class SceneImportSettings;
+	Map<StringName, Variant> *settings = nullptr;
+	Map<StringName, Variant> current;
+	Map<StringName, Variant> defaults;
+	List<ResourceImporter::ImportOption> options;
+
+	ResourceImporterScene::InternalImportCategory category = ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_MAX;
+
+	bool _set(const StringName &p_name, const Variant &p_value) {
+		if (settings) {
+			if (defaults.has(p_name) && defaults[p_name] == p_value) {
+				settings->erase(p_name);
+			} else {
+				(*settings)[p_name] = p_value;
+			}
+
+			current[p_name] = p_value;
+			return true;
+		}
+		return false;
+	}
+	bool _get(const StringName &p_name, Variant &r_ret) const {
+		if (settings) {
+			if (settings->has(p_name)) {
+				r_ret = (*settings)[p_name];
+				return true;
+			}
+		}
+		if (defaults.has(p_name)) {
+			r_ret = defaults[p_name];
+			return true;
+		}
+		return false;
+	}
+	void _get_property_list(List<PropertyInfo> *p_list) const {
+		for (const List<ResourceImporter::ImportOption>::Element *E = options.front(); E; E = E->next()) {
+			if (ResourceImporterScene::get_singleton()->get_internal_option_visibility(category, E->get().option.name, current)) {
+				p_list->push_back(E->get().option);
+			}
+		}
+	}
+};
+
+void SceneImportSettings::_fill_material(Tree *p_tree, const Ref<Material> &p_material, TreeItem *p_parent) {
+	String import_id;
+	bool has_import_id = false;
+
+	if (p_material->has_meta("import_id")) {
+		import_id = p_material->get_meta("import_id");
+		has_import_id = true;
+	} else if (p_material->get_name() != "") {
+		import_id = p_material->get_name();
+		has_import_id = true;
+	} else {
+		import_id = "@MATERIAL:" + itos(material_set.size());
+	}
+
+	if (!material_map.has(import_id)) {
+		MaterialData md;
+		md.has_import_id = has_import_id;
+		md.material = p_material;
+
+		_load_default_subresource_settings(md.settings, "materials", import_id, ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_MATERIAL);
+
+		material_map[import_id] = md;
+	}
+
+	MaterialData &material_data = material_map[import_id];
+
+	Ref<Texture2D> icon = get_theme_icon("StandardMaterial3D", "EditorIcons");
+
+	TreeItem *item = p_tree->create_item(p_parent);
+	item->set_text(0, p_material->get_name());
+	item->set_icon(0, icon);
+
+	bool created = false;
+	if (!material_set.has(p_material)) {
+		material_set.insert(p_material);
+		created = true;
+	}
+
+	item->set_meta("type", "Material");
+	item->set_meta("import_id", import_id);
+	item->set_tooltip(0, vformat(TTR("Import ID: %s"), import_id));
+	item->set_selectable(0, true);
+
+	if (p_tree == scene_tree) {
+		material_data.scene_node = item;
+	} else if (p_tree == mesh_tree) {
+		material_data.mesh_node = item;
+	} else {
+		material_data.material_node = item;
+	}
+
+	if (created) {
+		_fill_material(material_tree, p_material, material_tree->get_root());
+	}
+}
+
+void SceneImportSettings::_fill_mesh(Tree *p_tree, const Ref<Mesh> &p_mesh, TreeItem *p_parent) {
+	String import_id;
+
+	bool has_import_id = false;
+	if (p_mesh->has_meta("import_id")) {
+		import_id = p_mesh->get_meta("import_id");
+		has_import_id = true;
+	} else if (p_mesh->get_name() != String()) {
+		import_id = p_mesh->get_name();
+		has_import_id = true;
+	} else {
+		import_id = "@MESH:" + itos(mesh_set.size());
+	}
+
+	if (!mesh_map.has(import_id)) {
+		MeshData md;
+		md.has_import_id = has_import_id;
+		md.mesh = p_mesh;
+
+		_load_default_subresource_settings(md.settings, "meshes", import_id, ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_MESH);
+
+		mesh_map[import_id] = md;
+	}
+
+	MeshData &mesh_data = mesh_map[import_id];
+
+	Ref<Texture2D> icon = get_theme_icon("Mesh", "EditorIcons");
+
+	TreeItem *item = p_tree->create_item(p_parent);
+	item->set_text(0, p_mesh->get_name());
+	item->set_icon(0, icon);
+
+	bool created = false;
+	if (!mesh_set.has(p_mesh)) {
+		mesh_set.insert(p_mesh);
+		created = true;
+	}
+
+	item->set_meta("type", "Mesh");
+	item->set_meta("import_id", import_id);
+	item->set_tooltip(0, vformat(TTR("Import ID: %s"), import_id));
+
+	item->set_selectable(0, true);
+
+	if (p_tree == scene_tree) {
+		mesh_data.scene_node = item;
+	} else {
+		mesh_data.mesh_node = item;
+	}
+
+	item->set_collapsed(true);
+
+	for (int i = 0; i < p_mesh->get_surface_count(); i++) {
+		Ref<Material> mat = p_mesh->surface_get_material(i);
+		if (mat.is_valid()) {
+			_fill_material(p_tree, mat, item);
+		}
+	}
+
+	if (created) {
+		_fill_mesh(mesh_tree, p_mesh, mesh_tree->get_root());
+	}
+}
+
+void SceneImportSettings::_fill_animation(Tree *p_tree, const Ref<Animation> &p_anim, const String &p_name, TreeItem *p_parent) {
+	if (!animation_map.has(p_name)) {
+		AnimationData ad;
+		ad.animation = p_anim;
+
+		_load_default_subresource_settings(ad.settings, "animations", p_name, ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_ANIMATION);
+
+		animation_map[p_name] = ad;
+	}
+
+	AnimationData &animation_data = animation_map[p_name];
+
+	Ref<Texture2D> icon = get_theme_icon("Animation", "EditorIcons");
+
+	TreeItem *item = p_tree->create_item(p_parent);
+	item->set_text(0, p_name);
+	item->set_icon(0, icon);
+
+	item->set_meta("type", "Animation");
+	item->set_meta("import_id", p_name);
+
+	item->set_selectable(0, true);
+
+	animation_data.scene_node = item;
+}
+
+void SceneImportSettings::_fill_scene(Node *p_node, TreeItem *p_parent_item) {
+	String import_id;
+
+	if (p_node->has_meta("import_id")) {
+		import_id = p_node->get_meta("import_id");
+	} else {
+		import_id = "PATH:" + String(scene->get_path_to(p_node));
+		p_node->set_meta("import_id", import_id);
+	}
+
+	EditorSceneImporterMeshNode3D *src_mesh_node = Object::cast_to<EditorSceneImporterMeshNode3D>(p_node);
+
+	if (src_mesh_node) {
+		MeshInstance3D *mesh_node = memnew(MeshInstance3D);
+		mesh_node->set_name(src_mesh_node->get_name());
+		mesh_node->set_transform(src_mesh_node->get_transform());
+		mesh_node->set_skin(src_mesh_node->get_skin());
+		mesh_node->set_skeleton_path(src_mesh_node->get_skeleton_path());
+		if (src_mesh_node->get_mesh().is_valid()) {
+			Ref<EditorSceneImporterMesh> editor_mesh = src_mesh_node->get_mesh();
+			mesh_node->set_mesh(editor_mesh->get_mesh());
+		}
+
+		p_node->replace_by(mesh_node);
+		memdelete(p_node);
+		p_node = mesh_node;
+	}
+
+	String type = p_node->get_class();
+
+	if (!has_theme_icon(type, "EditorIcons")) {
+		type = "Node3D";
+	}
+
+	Ref<Texture2D> icon = get_theme_icon(type, "EditorIcons");
+
+	TreeItem *item = scene_tree->create_item(p_parent_item);
+	item->set_text(0, p_node->get_name());
+
+	if (p_node == scene) {
+		icon = get_theme_icon("PackedScene", "EditorIcons");
+		item->set_text(0, "Scene");
+	}
+
+	item->set_icon(0, icon);
+
+	item->set_meta("type", "Node");
+	item->set_meta("class", type);
+	item->set_meta("import_id", import_id);
+	item->set_tooltip(0, vformat(TTR("Type: %s\nImport ID: %s"), type, import_id));
+
+	item->set_selectable(0, true);
+
+	if (!node_map.has(import_id)) {
+		NodeData nd;
+
+		if (p_node != scene) {
+			ResourceImporterScene::InternalImportCategory category;
+			if (src_mesh_node) {
+				category = ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_MESH_3D_NODE;
+			} else if (Object::cast_to<AnimationPlayer>(p_node)) {
+				category = ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_ANIMATION_NODE;
+			} else {
+				category = ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_NODE;
+			}
+
+			_load_default_subresource_settings(nd.settings, "nodes", import_id, category);
+		}
+
+		node_map[import_id] = nd;
+	}
+	NodeData &node_data = node_map[import_id];
+
+	node_data.node = p_node;
+	node_data.scene_node = item;
+
+	AnimationPlayer *anim_node = Object::cast_to<AnimationPlayer>(p_node);
+	if (anim_node) {
+		List<StringName> animations;
+		anim_node->get_animation_list(&animations);
+		for (List<StringName>::Element *E = animations.front(); E; E = E->next()) {
+			_fill_animation(scene_tree, anim_node->get_animation(E->get()), E->get(), item);
+		}
+	}
+
+	for (int i = 0; i < p_node->get_child_count(); i++) {
+		_fill_scene(p_node->get_child(i), item);
+	}
+	MeshInstance3D *mesh_node = Object::cast_to<MeshInstance3D>(p_node);
+	if (mesh_node && mesh_node->get_mesh().is_valid()) {
+		_fill_mesh(scene_tree, mesh_node->get_mesh(), item);
+
+		Transform accum_xform;
+		Node3D *base = mesh_node;
+		while (base) {
+			accum_xform = base->get_transform() * accum_xform;
+			base = Object::cast_to<Node3D>(base->get_parent());
+		}
+
+		AABB aabb = accum_xform.xform(mesh_node->get_mesh()->get_aabb());
+		if (first_aabb) {
+			contents_aabb = aabb;
+			first_aabb = false;
+		} else {
+			contents_aabb.merge_with(aabb);
+		}
+	}
+}
+
+void SceneImportSettings::_update_scene() {
+	scene_tree->clear();
+	material_tree->clear();
+	mesh_tree->clear();
+
+	//hiden roots
+	material_tree->create_item();
+	mesh_tree->create_item();
+
+	_fill_scene(scene, nullptr);
+}
+
+void SceneImportSettings::_update_camera() {
+	AABB camera_aabb;
+
+	float rot_x = cam_rot_x;
+	float rot_y = cam_rot_y;
+	float zoom = cam_zoom;
+
+	if (selected_type == "Node" || selected_type == "") {
+		camera_aabb = contents_aabb;
+	} else {
+		if (mesh_preview->get_mesh().is_valid()) {
+			camera_aabb = mesh_preview->get_transform().xform(mesh_preview->get_mesh()->get_aabb());
+		} else {
+			camera_aabb = AABB(Vector3(-1, -1, -1), Vector3(2, 2, 2));
+		}
+		if (selected_type == "Mesh" && mesh_map.has(selected_id)) {
+			const MeshData &md = mesh_map[selected_id];
+			rot_x = md.cam_rot_x;
+			rot_y = md.cam_rot_y;
+			zoom = md.cam_zoom;
+		} else if (selected_type == "Material" && material_map.has(selected_id)) {
+			const MaterialData &md = material_map[selected_id];
+			rot_x = md.cam_rot_x;
+			rot_y = md.cam_rot_y;
+			zoom = md.cam_zoom;
+		}
+	}
+
+	Vector3 center = camera_aabb.position + camera_aabb.size * 0.5;
+	float camera_size = camera_aabb.get_longest_axis_size();
+
+	camera->set_orthogonal(camera_size * zoom, 0.0001, camera_size * 2);
+
+	Transform xf;
+	xf.basis = Basis(Vector3(0, 1, 0), rot_y) * Basis(Vector3(1, 0, 0), rot_x);
+	xf.origin = center;
+	xf.translate(0, 0, camera_size);
+
+	camera->set_transform(xf);
+}
+
+void SceneImportSettings::_load_default_subresource_settings(Map<StringName, Variant> &settings, const String &p_type, const String &p_import_id, ResourceImporterScene::InternalImportCategory p_category) {
+	if (base_subresource_settings.has(p_type)) {
+		Dictionary d = base_subresource_settings[p_type];
+		if (d.has(p_import_id)) {
+			d = d[p_import_id];
+			List<ResourceImporterScene::ImportOption> options;
+			ResourceImporterScene::get_singleton()->get_internal_import_options(p_category, &options);
+			for (List<ResourceImporterScene::ImportOption>::Element *E = options.front(); E; E = E->next()) {
+				String key = E->get().option.name;
+				if (d.has(key)) {
+					settings[key] = d[key];
+				}
+			}
+		}
+	}
+}
+
+void SceneImportSettings::open_settings(const String &p_path) {
+	if (scene) {
+		memdelete(scene);
+		scene = nullptr;
+	}
+	scene = ResourceImporterScene::get_singleton()->pre_import(p_path);
+	if (scene == nullptr) {
+		EditorNode::get_singleton()->show_warning(TTR("Error opening scene"));
+		return;
+	}
+
+	base_path = p_path;
+
+	material_set.clear();
+	mesh_set.clear();
+	material_map.clear();
+	mesh_map.clear();
+	node_map.clear();
+	defaults.clear();
+
+	selected_id = "";
+	selected_type = "";
+
+	cam_rot_x = -Math_PI / 4;
+	cam_rot_y = -Math_PI / 4;
+	cam_zoom = 1;
+
+	{
+		base_subresource_settings.clear();
+
+		Ref<ConfigFile> config;
+		config.instance();
+		Error err = config->load(p_path + ".import");
+		if (err == OK) {
+			List<String> keys;
+			config->get_section_keys("params", &keys);
+			for (List<String>::Element *E = keys.front(); E; E = E->next()) {
+				Variant value = config->get_value("params", E->get());
+				if (E->get() == "_subresources") {
+					base_subresource_settings = value;
+				} else {
+					defaults[E->get()] = value;
+				}
+			}
+		}
+	}
+
+	first_aabb = true;
+
+	_update_scene();
+
+	base_viewport->add_child(scene);
+
+	if (first_aabb) {
+		contents_aabb = AABB(Vector3(-1, -1, -1), Vector3(2, 2, 2));
+		first_aabb = false;
+	}
+
+	popup_centered_ratio();
+	_update_camera();
+
+	set_title(vformat(TTR("Advanced Import Settings for '%s'"), base_path.get_file()));
+}
+
+SceneImportSettings *SceneImportSettings::singleton = nullptr;
+
+SceneImportSettings *SceneImportSettings::get_singleton() {
+	return singleton;
+}
+
+void SceneImportSettings::_select(Tree *p_from, String p_type, String p_id) {
+	selecting = true;
+
+	if (p_type == "Node") {
+		node_selected->hide(); //always hide just in case
+		mesh_preview->hide();
+		if (Object::cast_to<Node3D>(scene)) {
+			Object::cast_to<Node3D>(scene)->show();
+		}
+		//NodeData &nd=node_map[p_id];
+		material_tree->deselect_all();
+		mesh_tree->deselect_all();
+		NodeData &nd = node_map[p_id];
+
+		MeshInstance3D *mi = Object::cast_to<MeshInstance3D>(nd.node);
+		if (mi) {
+			Ref<Mesh> base_mesh = mi->get_mesh();
+			if (base_mesh.is_valid()) {
+				AABB aabb = base_mesh->get_aabb();
+				Transform aabb_xf;
+				aabb_xf.basis.scale(aabb.size);
+				aabb_xf.origin = aabb.position;
+
+				aabb_xf = mi->get_global_transform() * aabb_xf;
+				node_selected->set_transform(aabb_xf);
+				node_selected->show();
+			}
+		}
+
+		if (nd.node == scene) {
+			scene_import_settings_data->settings = &defaults;
+			scene_import_settings_data->category = ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_MAX;
+		} else {
+			scene_import_settings_data->settings = &nd.settings;
+			if (mi) {
+				scene_import_settings_data->category = ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_MESH_3D_NODE;
+			} else if (Object::cast_to<AnimationPlayer>(nd.node)) {
+				scene_import_settings_data->category = ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_ANIMATION_NODE;
+			} else {
+				scene_import_settings_data->category = ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_NODE;
+			}
+		}
+	} else if (p_type == "Animation") {
+		node_selected->hide(); //always hide just in case
+		mesh_preview->hide();
+		if (Object::cast_to<Node3D>(scene)) {
+			Object::cast_to<Node3D>(scene)->show();
+		}
+		//NodeData &nd=node_map[p_id];
+		material_tree->deselect_all();
+		mesh_tree->deselect_all();
+		AnimationData &ad = animation_map[p_id];
+
+		scene_import_settings_data->settings = &ad.settings;
+		scene_import_settings_data->category = ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_ANIMATION;
+	} else if (p_type == "Mesh") {
+		node_selected->hide();
+		if (Object::cast_to<Node3D>(scene)) {
+			Object::cast_to<Node3D>(scene)->hide();
+		}
+
+		MeshData &md = mesh_map[p_id];
+		if (p_from != mesh_tree) {
+			md.mesh_node->uncollapse_tree();
+			md.mesh_node->select(0);
+			mesh_tree->ensure_cursor_is_visible();
+		}
+		if (p_from != scene_tree) {
+			md.scene_node->uncollapse_tree();
+			md.scene_node->select(0);
+			scene_tree->ensure_cursor_is_visible();
+		}
+
+		mesh_preview->set_mesh(md.mesh);
+		mesh_preview->show();
+
+		material_tree->deselect_all();
+
+		scene_import_settings_data->settings = &md.settings;
+		scene_import_settings_data->category = ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_MESH;
+	} else if (p_type == "Material") {
+		node_selected->hide();
+		if (Object::cast_to<Node3D>(scene)) {
+			Object::cast_to<Node3D>(scene)->hide();
+		}
+
+		mesh_preview->show();
+
+		MaterialData &md = material_map[p_id];
+
+		material_preview->set_material(md.material);
+		mesh_preview->set_mesh(material_preview);
+
+		if (p_from != mesh_tree) {
+			md.mesh_node->uncollapse_tree();
+			md.mesh_node->select(0);
+			mesh_tree->ensure_cursor_is_visible();
+		}
+		if (p_from != scene_tree) {
+			md.scene_node->uncollapse_tree();
+			md.scene_node->select(0);
+			scene_tree->ensure_cursor_is_visible();
+		}
+		if (p_from != material_tree) {
+			md.material_node->uncollapse_tree();
+			md.material_node->select(0);
+			material_tree->ensure_cursor_is_visible();
+		}
+
+		scene_import_settings_data->settings = &md.settings;
+		scene_import_settings_data->category = ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_MATERIAL;
+	}
+
+	selected_type = p_type;
+	selected_id = p_id;
+
+	selecting = false;
+
+	_update_camera();
+
+	List<ResourceImporter::ImportOption> options;
+
+	if (scene_import_settings_data->category == ResourceImporterScene::INTERNAL_IMPORT_CATEGORY_MAX) {
+		ResourceImporterScene::get_singleton()->get_import_options(&options);
+	} else {
+		ResourceImporterScene::get_singleton()->get_internal_import_options(scene_import_settings_data->category, &options);
+	}
+
+	scene_import_settings_data->defaults.clear();
+	scene_import_settings_data->current.clear();
+
+	for (List<ResourceImporter::ImportOption>::Element *E = options.front(); E; E = E->next()) {
+		scene_import_settings_data->defaults[E->get().option.name] = E->get().default_value;
+		//needed for visibility toggling (fails if something is missing)
+		if (scene_import_settings_data->settings->has(E->get().option.name)) {
+			scene_import_settings_data->current[E->get().option.name] = (*scene_import_settings_data->settings)[E->get().option.name];
+		} else {
+			scene_import_settings_data->current[E->get().option.name] = E->get().default_value;
+		}
+	}
+	scene_import_settings_data->options = options;
+	inspector->edit(scene_import_settings_data);
+	scene_import_settings_data->notify_property_list_changed();
+}
+
+void SceneImportSettings::_material_tree_selected() {
+	if (selecting) {
+		return;
+	}
+	TreeItem *item = material_tree->get_selected();
+	String type = item->get_meta("type");
+	String import_id = item->get_meta("import_id");
+
+	_select(material_tree, type, import_id);
+}
+void SceneImportSettings::_mesh_tree_selected() {
+	if (selecting) {
+		return;
+	}
+
+	TreeItem *item = mesh_tree->get_selected();
+	String type = item->get_meta("type");
+	String import_id = item->get_meta("import_id");
+
+	_select(mesh_tree, type, import_id);
+}
+void SceneImportSettings::_scene_tree_selected() {
+	if (selecting) {
+		return;
+	}
+	TreeItem *item = scene_tree->get_selected();
+	String type = item->get_meta("type");
+	String import_id = item->get_meta("import_id");
+
+	_select(scene_tree, type, import_id);
+}
+
+void SceneImportSettings::_viewport_input(const Ref<InputEvent> &p_input) {
+	float *rot_x = &cam_rot_x;
+	float *rot_y = &cam_rot_y;
+	float *zoom = &cam_zoom;
+
+	if (selected_type == "Mesh" && mesh_map.has(selected_id)) {
+		MeshData &md = mesh_map[selected_id];
+		rot_x = &md.cam_rot_x;
+		rot_y = &md.cam_rot_y;
+		zoom = &md.cam_zoom;
+	} else if (selected_type == "Material" && material_map.has(selected_id)) {
+		MaterialData &md = material_map[selected_id];
+		rot_x = &md.cam_rot_x;
+		rot_y = &md.cam_rot_y;
+		zoom = &md.cam_zoom;
+	}
+	Ref<InputEventMouseMotion> mm = p_input;
+	if (mm.is_valid() && mm->get_button_mask() & BUTTON_MASK_LEFT) {
+		(*rot_x) -= mm->get_relative().y * 0.01 * EDSCALE;
+		(*rot_y) -= mm->get_relative().x * 0.01 * EDSCALE;
+		(*rot_x) = CLAMP((*rot_x), -Math_PI / 2, Math_PI / 2);
+		_update_camera();
+	}
+	Ref<InputEventMouseButton> mb = p_input;
+	if (mb.is_valid() && mb->get_button_index() == BUTTON_WHEEL_DOWN) {
+		(*zoom) *= 1.1;
+		if ((*zoom) > 10.0) {
+			(*zoom) = 10.0;
+		}
+		_update_camera();
+	}
+	if (mb.is_valid() && mb->get_button_index() == BUTTON_WHEEL_UP) {
+		(*zoom) /= 1.1;
+		if ((*zoom) < 0.1) {
+			(*zoom) = 0.1;
+		}
+		_update_camera();
+	}
+}
+
+void SceneImportSettings::_re_import() {
+	Map<StringName, Variant> main_settings;
+
+	main_settings = defaults;
+	main_settings.erase("_subresources");
+	Dictionary nodes;
+	Dictionary materials;
+	Dictionary meshes;
+	Dictionary animations;
+
+	Dictionary subresources;
+
+	for (Map<String, NodeData>::Element *E = node_map.front(); E; E = E->next()) {
+		if (E->get().settings.size()) {
+			Dictionary d;
+			for (Map<StringName, Variant>::Element *F = E->get().settings.front(); F; F = F->next()) {
+				d[String(F->key())] = F->get();
+			}
+			nodes[E->key()] = d;
+		}
+	}
+	if (nodes.size()) {
+		subresources["nodes"] = nodes;
+	}
+
+	for (Map<String, MaterialData>::Element *E = material_map.front(); E; E = E->next()) {
+		if (E->get().settings.size()) {
+			Dictionary d;
+			for (Map<StringName, Variant>::Element *F = E->get().settings.front(); F; F = F->next()) {
+				d[String(F->key())] = F->get();
+			}
+			materials[E->key()] = d;
+		}
+	}
+	if (materials.size()) {
+		subresources["materials"] = materials;
+	}
+
+	for (Map<String, MeshData>::Element *E = mesh_map.front(); E; E = E->next()) {
+		if (E->get().settings.size()) {
+			Dictionary d;
+			for (Map<StringName, Variant>::Element *F = E->get().settings.front(); F; F = F->next()) {
+				d[String(F->key())] = F->get();
+			}
+			meshes[E->key()] = d;
+		}
+	}
+	if (meshes.size()) {
+		subresources["meshes"] = meshes;
+	}
+
+	for (Map<String, AnimationData>::Element *E = animation_map.front(); E; E = E->next()) {
+		if (E->get().settings.size()) {
+			Dictionary d;
+			for (Map<StringName, Variant>::Element *F = E->get().settings.front(); F; F = F->next()) {
+				d[String(F->key())] = F->get();
+			}
+			animations[E->key()] = d;
+		}
+	}
+	if (animations.size()) {
+		subresources["animations"] = animations;
+	}
+
+	if (subresources.size()) {
+		main_settings["_subresources"] = subresources;
+	}
+
+	EditorFileSystem::get_singleton()->reimport_file_with_custom_parameters(base_path, "scene", main_settings);
+}
+
+void SceneImportSettings::_notification(int p_what) {
+	if (p_what == NOTIFICATION_READY) {
+		connect("confirmed", callable_mp(this, &SceneImportSettings::_re_import));
+	}
+}
+
+void SceneImportSettings::_menu_callback(int p_id) {
+	switch (p_id) {
+		case ACTION_EXTRACT_MATERIALS: {
+			save_path->set_text(TTR("Select folder to extract material resources"));
+			external_extension_type->select(0);
+		} break;
+		case ACTION_CHOOSE_MESH_SAVE_PATHS: {
+			save_path->set_text(TTR("Select folder where mesh resources will save on import"));
+			external_extension_type->select(1);
+		} break;
+		case ACTION_CHOOSE_ANIMATION_SAVE_PATHS: {
+			save_path->set_text(TTR("Select folder where animations will save on import"));
+			external_extension_type->select(1);
+		} break;
+	}
+
+	save_path->set_current_dir(base_path.get_base_dir());
+	current_action = p_id;
+	save_path->popup_centered_ratio();
+}
+
+void SceneImportSettings::_save_path_changed(const String &p_path) {
+	save_path_item->set_text(1, p_path);
+
+	if (FileAccess::exists(p_path)) {
+		save_path_item->set_text(2, "Warning: File exists");
+		save_path_item->set_tooltip(2, TTR("Existing file with the same name will be replaced."));
+		save_path_item->set_icon(2, get_theme_icon("StatusWarning", "EditorIcons"));
+
+	} else {
+		save_path_item->set_text(2, "Will create new File");
+		save_path_item->set_icon(2, get_theme_icon("StatusSuccess", "EditorIcons"));
+	}
+}
+
+void SceneImportSettings::_browse_save_callback(Object *p_item, int p_column, int p_id) {
+	TreeItem *item = Object::cast_to<TreeItem>(p_item);
+
+	String path = item->get_text(1);
+
+	item_save_path->set_current_file(path);
+	save_path_item = item;
+
+	item_save_path->popup_centered_ratio();
+}
+
+void SceneImportSettings::_save_dir_callback(const String &p_path) {
+	external_path_tree->clear();
+	TreeItem *root = external_path_tree->create_item();
+	save_path_items.clear();
+
+	switch (current_action) {
+		case ACTION_EXTRACT_MATERIALS: {
+			for (Map<String, MaterialData>::Element *E = material_map.front(); E; E = E->next()) {
+				MaterialData &md = material_map[E->key()];
+
+				TreeItem *item = external_path_tree->create_item(root);
+
+				String name = md.material_node->get_text(0);
+
+				item->set_cell_mode(0, TreeItem::CELL_MODE_CHECK);
+				item->set_icon(0, get_theme_icon("StandardMaterial3D", "EditorIcons"));
+				item->set_text(0, name);
+
+				if (md.has_import_id) {
+					if (md.settings.has("use_external/enabled") && bool(md.settings["use_external/enabled"])) {
+						item->set_text(2, "Already External");
+						item->set_tooltip(2, TTR("This material already references an external file, no action will be taken.\nDisable the external property for it to be extracted again."));
+					} else {
+						item->set_metadata(0, E->key());
+						item->set_editable(0, true);
+						item->set_checked(0, true);
+						String path = p_path.plus_file(name);
+						if (external_extension_type->get_selected() == 0) {
+							path += ".tres";
+						} else {
+							path += ".res";
+						}
+
+						item->set_text(1, path);
+						if (FileAccess::exists(path)) {
+							item->set_text(2, "Warning: File exists");
+							item->set_tooltip(2, TTR("Existing file with the same name will be replaced."));
+							item->set_icon(2, get_theme_icon("StatusWarning", "EditorIcons"));
+
+						} else {
+							item->set_text(2, "Will create new File");
+							item->set_icon(2, get_theme_icon("StatusSuccess", "EditorIcons"));
+						}
+
+						item->add_button(1, get_theme_icon("Folder", "EditorIcons"));
+					}
+
+				} else {
+					item->set_text(2, "No import ID");
+					item->set_tooltip(2, TTR("Material has no name nor any other way to identify on re-import.\nPlease name it or ensure it is exported with an unique ID."));
+					item->set_icon(2, get_theme_icon("StatusError", "EditorIcons"));
+				}
+
+				save_path_items.push_back(item);
+			}
+
+			external_paths->set_title(TTR("Extract Materials to Resource Files"));
+			external_paths->get_ok_button()->set_text(TTR("Extract"));
+		} break;
+		case ACTION_CHOOSE_MESH_SAVE_PATHS: {
+			for (Map<String, MeshData>::Element *E = mesh_map.front(); E; E = E->next()) {
+				MeshData &md = mesh_map[E->key()];
+
+				TreeItem *item = external_path_tree->create_item(root);
+
+				String name = md.mesh_node->get_text(0);
+
+				item->set_cell_mode(0, TreeItem::CELL_MODE_CHECK);
+				item->set_icon(0, get_theme_icon("Mesh", "EditorIcons"));
+				item->set_text(0, name);
+
+				if (md.has_import_id) {
+					if (md.settings.has("save_to_file/enabled") && bool(md.settings["save_to_file/enabled"])) {
+						item->set_text(2, "Already Saving");
+						item->set_tooltip(2, TTR("This mesh already saves to an external resource, no action will be taken."));
+					} else {
+						item->set_metadata(0, E->key());
+						item->set_editable(0, true);
+						item->set_checked(0, true);
+						String path = p_path.plus_file(name);
+						if (external_extension_type->get_selected() == 0) {
+							path += ".tres";
+						} else {
+							path += ".res";
+						}
+
+						item->set_text(1, path);
+						if (FileAccess::exists(path)) {
+							item->set_text(2, "Warning: File exists");
+							item->set_tooltip(2, TTR("Existing file with the same name will be replaced on import."));
+							item->set_icon(2, get_theme_icon("StatusWarning", "EditorIcons"));
+
+						} else {
+							item->set_text(2, "Will save to new File");
+							item->set_icon(2, get_theme_icon("StatusSuccess", "EditorIcons"));
+						}
+
+						item->add_button(1, get_theme_icon("Folder", "EditorIcons"));
+					}
+
+				} else {
+					item->set_text(2, "No import ID");
+					item->set_tooltip(2, TTR("Mesh has no name nor any other way to identify on re-import.\nPlease name it or ensure it is exported with an unique ID."));
+					item->set_icon(2, get_theme_icon("StatusError", "EditorIcons"));
+				}
+
+				save_path_items.push_back(item);
+			}
+
+			external_paths->set_title(TTR("Set paths to save meshes as resource files on Reimport"));
+			external_paths->get_ok_button()->set_text(TTR("Set Paths"));
+		} break;
+		case ACTION_CHOOSE_ANIMATION_SAVE_PATHS: {
+			for (Map<String, AnimationData>::Element *E = animation_map.front(); E; E = E->next()) {
+				AnimationData &ad = animation_map[E->key()];
+
+				TreeItem *item = external_path_tree->create_item(root);
+
+				String name = ad.scene_node->get_text(0);
+
+				item->set_cell_mode(0, TreeItem::CELL_MODE_CHECK);
+				item->set_icon(0, get_theme_icon("Animation", "EditorIcons"));
+				item->set_text(0, name);
+
+				if (ad.settings.has("save_to_file/enabled") && bool(ad.settings["save_to_file/enabled"])) {
+					item->set_text(2, "Already Saving");
+					item->set_tooltip(2, TTR("This animation already saves to an external resource, no action will be taken."));
+				} else {
+					item->set_metadata(0, E->key());
+					item->set_editable(0, true);
+					item->set_checked(0, true);
+					String path = p_path.plus_file(name);
+					if (external_extension_type->get_selected() == 0) {
+						path += ".tres";
+					} else {
+						path += ".res";
+					}
+
+					item->set_text(1, path);
+					if (FileAccess::exists(path)) {
+						item->set_text(2, "Warning: File exists");
+						item->set_tooltip(2, TTR("Existing file with the same name will be replaced on import."));
+						item->set_icon(2, get_theme_icon("StatusWarning", "EditorIcons"));
+
+					} else {
+						item->set_text(2, "Will save to new File");
+						item->set_icon(2, get_theme_icon("StatusSuccess", "EditorIcons"));
+					}
+
+					item->add_button(1, get_theme_icon("Folder", "EditorIcons"));
+				}
+
+				save_path_items.push_back(item);
+			}
+
+			external_paths->set_title(TTR("Set paths to save animations as resource files on Reimport"));
+			external_paths->get_ok_button()->set_text(TTR("Set Paths"));
+
+		} break;
+	}
+
+	external_paths->popup_centered_ratio();
+}
+
+void SceneImportSettings::_save_dir_confirm() {
+	for (int i = 0; i < save_path_items.size(); i++) {
+		TreeItem *item = save_path_items[i];
+		if (!item->is_checked(0)) {
+			continue; //ignore
+		}
+		String path = item->get_text(1);
+		if (!path.is_resource_file()) {
+			continue;
+		}
+
+		String id = item->get_metadata(0);
+
+		switch (current_action) {
+			case ACTION_EXTRACT_MATERIALS: {
+				ERR_CONTINUE(!material_map.has(id));
+				MaterialData &md = material_map[id];
+
+				Error err = ResourceSaver::save(path, md.material);
+				if (err != OK) {
+					EditorNode::get_singleton()->add_io_error(TTR("Can't make material external to file, write error:") + "\n\t" + path);
+					continue;
+				}
+
+				md.settings["use_external/enabled"] = true;
+				md.settings["use_external/path"] = path;
+
+			} break;
+			case ACTION_CHOOSE_MESH_SAVE_PATHS: {
+				ERR_CONTINUE(!mesh_map.has(id));
+				MeshData &md = mesh_map[id];
+
+				md.settings["save_to_file/enabled"] = true;
+				md.settings["save_to_file/path"] = path;
+			} break;
+			case ACTION_CHOOSE_ANIMATION_SAVE_PATHS: {
+				ERR_CONTINUE(!animation_map.has(id));
+				AnimationData &ad = animation_map[id];
+
+				ad.settings["save_to_file/enabled"] = true;
+				ad.settings["save_to_file/path"] = path;
+
+			} break;
+		}
+	}
+
+	if (current_action == ACTION_EXTRACT_MATERIALS) {
+		//as this happens right now, the scene needs to be saved and reimported.
+		_re_import();
+		open_settings(base_path);
+	} else {
+		scene_import_settings_data->notify_property_list_changed();
+	}
+}
+
+SceneImportSettings::SceneImportSettings() {
+	singleton = this;
+
+	VBoxContainer *main_vb = memnew(VBoxContainer);
+	add_child(main_vb);
+	HBoxContainer *menu_hb = memnew(HBoxContainer);
+	main_vb->add_child(menu_hb);
+
+	action_menu = memnew(MenuButton);
+	action_menu->set_text(TTR("Actions..."));
+	menu_hb->add_child(action_menu);
+
+	action_menu->get_popup()->add_item(TTR("Extract Materials"), ACTION_EXTRACT_MATERIALS);
+	action_menu->get_popup()->add_separator();
+	action_menu->get_popup()->add_item(TTR("Set Animation Save Paths"), ACTION_CHOOSE_ANIMATION_SAVE_PATHS);
+	action_menu->get_popup()->add_item(TTR("Set Mesh Save Paths"), ACTION_CHOOSE_MESH_SAVE_PATHS);
+
+	action_menu->get_popup()->connect("id_pressed", callable_mp(this, &SceneImportSettings::_menu_callback));
+
+	tree_split = memnew(HSplitContainer);
+	main_vb->add_child(tree_split);
+	tree_split->set_v_size_flags(Control::SIZE_EXPAND_FILL);
+
+	data_mode = memnew(TabContainer);
+	tree_split->add_child(data_mode);
+	data_mode->set_custom_minimum_size(Size2(300 * EDSCALE, 0));
+
+	property_split = memnew(HSplitContainer);
+	tree_split->add_child(property_split);
+	property_split->set_h_size_flags(Control::SIZE_EXPAND_FILL);
+
+	scene_tree = memnew(Tree);
+	scene_tree->set_name(TTR("Scene"));
+	data_mode->add_child(scene_tree);
+	scene_tree->connect("cell_selected", callable_mp(this, &SceneImportSettings::_scene_tree_selected));
+
+	mesh_tree = memnew(Tree);
+	mesh_tree->set_name(TTR("Meshes"));
+	data_mode->add_child(mesh_tree);
+	mesh_tree->set_hide_root(true);
+	mesh_tree->connect("cell_selected", callable_mp(this, &SceneImportSettings::_mesh_tree_selected));
+
+	material_tree = memnew(Tree);
+	material_tree->set_name(TTR("Materials"));
+	data_mode->add_child(material_tree);
+	material_tree->connect("cell_selected", callable_mp(this, &SceneImportSettings::_material_tree_selected));
+
+	material_tree->set_hide_root(true);
+
+	SubViewportContainer *vp_container = memnew(SubViewportContainer);
+	vp_container->set_h_size_flags(Control::SIZE_EXPAND_FILL);
+	vp_container->set_custom_minimum_size(Size2(10, 10));
+	vp_container->set_stretch(true);
+	vp_container->connect("gui_input", callable_mp(this, &SceneImportSettings::_viewport_input));
+	property_split->add_child(vp_container);
+
+	base_viewport = memnew(SubViewport);
+	vp_container->add_child(base_viewport);
+
+	base_viewport->set_use_own_world_3d(true);
+
+	camera = memnew(Camera3D);
+	base_viewport->add_child(camera);
+	camera->make_current();
+
+	light = memnew(DirectionalLight3D);
+	light->set_transform(Transform().looking_at(Vector3(-1, -2, -0.6), Vector3(0, 1, 0)));
+	base_viewport->add_child(light);
+	light->set_shadow(true);
+
+	{
+		Ref<StandardMaterial3D> selection_mat;
+		selection_mat.instance();
+		selection_mat->set_shading_mode(StandardMaterial3D::SHADING_MODE_UNSHADED);
+		selection_mat->set_albedo(Color(1, 0.8, 1.0));
+
+		Ref<SurfaceTool> st;
+		st.instance();
+		st->begin(Mesh::PRIMITIVE_LINES);
+
+		AABB base_aabb;
+		base_aabb.size = Vector3(1, 1, 1);
+
+		for (int i = 0; i < 12; i++) {
+			Vector3 a, b;
+			base_aabb.get_edge(i, a, b);
+
+			st->add_vertex(a);
+			st->add_vertex(a.lerp(b, 0.2));
+			st->add_vertex(b);
+			st->add_vertex(b.lerp(a, 0.2));
+		}
+
+		selection_mesh.instance();
+		st->commit(selection_mesh);
+		selection_mesh->surface_set_material(0, selection_mat);
+
+		node_selected = memnew(MeshInstance3D);
+		node_selected->set_mesh(selection_mesh);
+		base_viewport->add_child(node_selected);
+		node_selected->hide();
+	}
+
+	{
+		mesh_preview = memnew(MeshInstance3D);
+		base_viewport->add_child(mesh_preview);
+		mesh_preview->hide();
+
+		material_preview.instance();
+	}
+
+	inspector = memnew(EditorInspector);
+	inspector->set_custom_minimum_size(Size2(300 * EDSCALE, 0));
+
+	property_split->add_child(inspector);
+
+	scene_import_settings_data = memnew(SceneImportSettingsData);
+
+	get_ok_button()->set_text(TTR("Reimport"));
+	get_cancel_button()->set_text(TTR("Close"));
+
+	external_paths = memnew(ConfirmationDialog);
+	add_child(external_paths);
+	external_path_tree = memnew(Tree);
+	external_paths->add_child(external_path_tree);
+	external_path_tree->connect("button_pressed", callable_mp(this, &SceneImportSettings::_browse_save_callback));
+	external_paths->connect("confirmed", callable_mp(this, &SceneImportSettings::_save_dir_confirm));
+	external_path_tree->set_columns(3);
+	external_path_tree->set_column_titles_visible(true);
+	external_path_tree->set_column_expand(0, true);
+	external_path_tree->set_column_min_width(0, 100 * EDSCALE);
+	external_path_tree->set_column_title(0, TTR("Resource"));
+	external_path_tree->set_column_expand(1, true);
+	external_path_tree->set_column_min_width(1, 100 * EDSCALE);
+	external_path_tree->set_column_title(1, TTR("Path"));
+	external_path_tree->set_column_expand(2, false);
+	external_path_tree->set_column_min_width(2, 200 * EDSCALE);
+	external_path_tree->set_column_title(2, TTR("Status"));
+	save_path = memnew(EditorFileDialog);
+	save_path->set_file_mode(EditorFileDialog::FILE_MODE_OPEN_DIR);
+	HBoxContainer *extension_hb = memnew(HBoxContainer);
+	save_path->get_vbox()->add_child(extension_hb);
+	extension_hb->add_spacer();
+	extension_hb->add_child(memnew(Label(TTR("Save Extension: "))));
+	external_extension_type = memnew(OptionButton);
+	extension_hb->add_child(external_extension_type);
+	external_extension_type->add_item(TTR("Text: *.tres"));
+	external_extension_type->add_item(TTR("Binary: *.res"));
+	external_path_tree->set_hide_root(true);
+	add_child(save_path);
+
+	item_save_path = memnew(EditorFileDialog);
+	item_save_path->set_file_mode(EditorFileDialog::FILE_MODE_SAVE_FILE);
+	item_save_path->add_filter("*.tres;Text Resource");
+	item_save_path->add_filter("*.res;Binary Resource");
+	add_child(item_save_path);
+	item_save_path->connect("file_selected", callable_mp(this, &SceneImportSettings::_save_path_changed));
+
+	save_path->connect("dir_selected", callable_mp(this, &SceneImportSettings::_save_dir_callback));
+}
+
+SceneImportSettings::~SceneImportSettings() {
+	memdelete(scene_import_settings_data);
+}