add position track normalization & post process key value for retarget

doc/classes/Skeleton3D.xml

@@ -392,6 +392,10 @@
 	<members>
 		<member name="animate_physical_bones" type="bool" setter="set_animate_physical_bones" getter="get_animate_physical_bones" default="true">
 		</member>
+		<member name="motion_scale" type="float" setter="set_motion_scale" getter="get_motion_scale" default="1.0">
+			Multiplies the position 3D track animation.
+			[b]Note:[/b] Unless this value is [code]1.0[/code], the key value in animation will not match the actual position value.
+		</member>
 		<member name="show_rest_only" type="bool" setter="set_show_rest_only" getter="is_show_rest_only" default="false">
 		</member>
 	</members>

doc/classes/SkeletonProfile.xml

@@ -162,6 +162,14 @@
 		</member>
 		<member name="group_size" type="int" setter="set_group_size" getter="get_group_size" default="0">
 		</member>
+		<member name="root_bone" type="StringName" setter="set_root_bone" getter="get_root_bone" default="&amp;&quot;&quot;">
+			A name of bone that will be used as the root bone in [AnimationTree].
+			[b]Note:[/b] In most cases, it is the bone of the parent of the hips that exists at the world origin in the humanoid model.
+		</member>
+		<member name="scale_base_bone" type="StringName" setter="set_scale_base_bone" getter="get_scale_base_bone" default="&amp;&quot;&quot;">
+			A name of bone which height will be used as the coefficient for normalization.
+			[b]Note:[/b] In most cases, it is hips in the humanoid model.
+		</member>
 	</members>
 	<signals>
 		<signal name="profile_updated">

doc/classes/SkeletonProfileHumanoid.xml

@@ -10,5 +10,7 @@
 	<members>
 		<member name="bone_size" type="int" setter="set_bone_size" getter="get_bone_size" overrides="SkeletonProfile" default="56" />
 		<member name="group_size" type="int" setter="set_group_size" getter="get_group_size" overrides="SkeletonProfile" default="4" />
+		<member name="root_bone" type="StringName" setter="set_root_bone" getter="get_root_bone" overrides="SkeletonProfile" default="&amp;&quot;Root&quot;" />
+		<member name="scale_base_bone" type="StringName" setter="set_scale_base_bone" getter="get_scale_base_bone" overrides="SkeletonProfile" default="&amp;&quot;Hips&quot;" />
 	</members>
 </class>

editor/import/post_import_plugin_skeleton_rest_fixer.cpp

@@ -34,11 +34,11 @@
 #include "scene/3d/importer_mesh_instance_3d.h"
 #include "scene/3d/skeleton_3d.h"
 #include "scene/animation/animation_player.h"
-#include "scene/resources/animation.h"
 #include "scene/resources/bone_map.h"
 
 void PostImportPluginSkeletonRestFixer::get_internal_import_options(InternalImportCategory p_category, List<ResourceImporter::ImportOption> *r_options) {
 	if (p_category == INTERNAL_IMPORT_CATEGORY_SKELETON_3D_NODE) {
+		r_options->push_back(ResourceImporter::ImportOption(PropertyInfo(Variant::BOOL, "retarget/rest_fixer/normalize_position_tracks"), true));
 		r_options->push_back(ResourceImporter::ImportOption(PropertyInfo(Variant::BOOL, "retarget/rest_fixer/overwrite_axis"), true));
 
 		r_options->push_back(ResourceImporter::ImportOption(PropertyInfo(Variant::BOOL, "retarget/rest_fixer/fix_silhouette/enable"), false));
@@ -89,6 +89,53 @@ void PostImportPluginSkeletonRestFixer::internal_process(InternalImportCategory
 			}
 		}
 
+		// Set motion scale to Skeleton if normalize position tracks.
+		if (bool(p_options["retarget/rest_fixer/normalize_position_tracks"])) {
+			int src_bone_idx = src_skeleton->find_bone(profile->get_scale_base_bone());
+			if (src_bone_idx >= 0) {
+				real_t motion_scale = abs(src_skeleton->get_bone_global_rest(src_bone_idx).origin.y);
+				if (motion_scale > 0) {
+					src_skeleton->set_motion_scale(motion_scale);
+				}
+			}
+
+			TypedArray<Node> nodes = p_base_scene->find_children("*", "AnimationPlayer");
+			while (nodes.size()) {
+				AnimationPlayer *ap = Object::cast_to<AnimationPlayer>(nodes.pop_back());
+				List<StringName> anims;
+				ap->get_animation_list(&anims);
+				for (const StringName &name : anims) {
+					Ref<Animation> anim = ap->get_animation(name);
+					int track_len = anim->get_track_count();
+					for (int i = 0; i < track_len; i++) {
+						if (anim->track_get_path(i).get_subname_count() != 1 || anim->track_get_type(i) != Animation::TYPE_POSITION_3D) {
+							continue;
+						}
+
+						if (anim->track_is_compressed(i)) {
+							continue; // Shouldn't occur in internal_process().
+						}
+
+						String track_path = String(anim->track_get_path(i).get_concatenated_names());
+						Node *node = (ap->get_node(ap->get_root()))->get_node(NodePath(track_path));
+						if (node) {
+							Skeleton3D *track_skeleton = Object::cast_to<Skeleton3D>(node);
+							if (track_skeleton) {
+								if (track_skeleton && track_skeleton == src_skeleton) {
+									real_t mlt = 1 / src_skeleton->get_motion_scale();
+									int key_len = anim->track_get_key_count(i);
+									for (int j = 0; j < key_len; j++) {
+										Vector3 pos = static_cast<Vector3>(anim->track_get_key_value(i, j));
+										anim->track_set_key_value(i, j, pos * mlt);
+									}
+								}
+							}
+						}
+					}
+				}
+			}
+		}
+
 		// Complement Rotation track for compatibility between different rests.
 		{
 			TypedArray<Node> nodes = p_base_scene->find_children("*", "AnimationPlayer");
@@ -357,12 +404,12 @@ void PostImportPluginSkeletonRestFixer::internal_process(InternalImportCategory
 						Ref<Animation> anim = ap->get_animation(name);
 						int track_len = anim->get_track_count();
 						for (int i = 0; i < track_len; i++) {
-							if (anim->track_get_path(i).get_subname_count() != 1 || anim->track_get_type(i) != Animation::TYPE_ROTATION_3D) {
+							if (anim->track_get_path(i).get_subname_count() != 1 || !(anim->track_get_type(i) == Animation::TYPE_POSITION_3D || anim->track_get_type(i) == Animation::TYPE_ROTATION_3D || anim->track_get_type(i) == Animation::TYPE_SCALE_3D)) {
 								continue;
 							}
 
 							if (anim->track_is_compressed(i)) {
-								continue; // TODO: Adopt to compressed track.
+								continue; // Shouldn't occur in internal_process().
 							}
 
 							String track_path = String(anim->track_get_path(i).get_concatenated_names());
@@ -374,20 +421,44 @@ void PostImportPluginSkeletonRestFixer::internal_process(InternalImportCategory
 									if (bn) {
 										int bone_idx = src_skeleton->find_bone(bn);
 
-										Quaternion old_rest = old_skeleton_rest[bone_idx].basis.get_rotation_quaternion();
-										Quaternion new_rest = src_skeleton->get_bone_rest(bone_idx).basis.get_rotation_quaternion();
-										Quaternion old_pg;
-										Quaternion new_pg;
+										Transform3D old_rest = old_skeleton_rest[bone_idx];
+										Transform3D new_rest = src_skeleton->get_bone_rest(bone_idx);
+										Transform3D old_pg;
+										Transform3D new_pg;
 										int parent_idx = src_skeleton->get_bone_parent(bone_idx);
 										if (parent_idx >= 0) {
-											old_pg = old_skeleton_global_rest[parent_idx].basis.get_rotation_quaternion();
-											new_pg = src_skeleton->get_bone_global_rest(parent_idx).basis.get_rotation_quaternion();
+											old_pg = old_skeleton_global_rest[parent_idx];
+											new_pg = src_skeleton->get_bone_global_rest(parent_idx);
 										}
 
 										int key_len = anim->track_get_key_count(i);
-										for (int j = 0; j < key_len; j++) {
-											Quaternion qt = static_cast<Quaternion>(anim->track_get_key_value(i, j));
-											anim->track_set_key_value(i, j, new_pg.inverse() * old_pg * qt * old_rest.inverse() * old_pg.inverse() * new_pg * new_rest);
+										if (anim->track_get_type(i) == Animation::TYPE_ROTATION_3D) {
+											Quaternion old_rest_q = old_rest.basis.get_rotation_quaternion();
+											Quaternion new_rest_q = new_rest.basis.get_rotation_quaternion();
+											Quaternion old_pg_q = old_pg.basis.get_rotation_quaternion();
+											Quaternion new_pg_q = new_pg.basis.get_rotation_quaternion();
+											for (int j = 0; j < key_len; j++) {
+												Quaternion qt = static_cast<Quaternion>(anim->track_get_key_value(i, j));
+												anim->track_set_key_value(i, j, new_pg_q.inverse() * old_pg_q * qt * old_rest_q.inverse() * old_pg_q.inverse() * new_pg_q * new_rest_q);
+											}
+										} else if (anim->track_get_type(i) == Animation::TYPE_SCALE_3D) {
+											Basis old_rest_b = old_rest.basis;
+											Basis new_rest_b = new_rest.basis;
+											Basis old_pg_b = old_pg.basis;
+											Basis new_pg_b = new_pg.basis;
+											for (int j = 0; j < key_len; j++) {
+												Basis sc = Basis().scaled(static_cast<Vector3>(anim->track_get_key_value(i, j)));
+												anim->track_set_key_value(i, j, (new_pg_b.inverse() * old_pg_b * sc * old_rest_b.inverse() * old_pg_b.inverse() * new_pg_b * new_rest_b).get_scale());
+											}
+										} else {
+											Vector3 old_rest_o = old_rest.origin;
+											Vector3 new_rest_o = new_rest.origin;
+											Quaternion old_pg_q = old_pg.basis.get_rotation_quaternion();
+											Quaternion new_pg_q = new_pg.basis.get_rotation_quaternion();
+											for (int j = 0; j < key_len; j++) {
+												Vector3 ps = static_cast<Vector3>(anim->track_get_key_value(i, j));
+												anim->track_set_key_value(i, j, new_pg_q.xform_inv(old_pg_q.xform(ps - old_rest_o)) + new_rest_o);
+											}
 										}
 									}
 								}

editor/import/post_import_plugin_skeleton_track_organizer.cpp

@@ -0,0 +1,116 @@
+/*************************************************************************/
+/*  post_import_plugin_skeleton_track_organizer.cpp                      */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 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 "post_import_plugin_skeleton_track_organizer.h"
+
+#include "editor/import/scene_import_settings.h"
+#include "scene/3d/skeleton_3d.h"
+#include "scene/animation/animation_player.h"
+#include "scene/resources/bone_map.h"
+
+void PostImportPluginSkeletonTrackOrganizer::get_internal_import_options(InternalImportCategory p_category, List<ResourceImporter::ImportOption> *r_options) {
+	if (p_category == INTERNAL_IMPORT_CATEGORY_SKELETON_3D_NODE) {
+		r_options->push_back(ResourceImporter::ImportOption(PropertyInfo(Variant::BOOL, "retarget/remove_tracks/unimportant_positions"), true));
+		r_options->push_back(ResourceImporter::ImportOption(PropertyInfo(Variant::BOOL, "retarget/remove_tracks/unmapped_bones"), false));
+	}
+}
+
+void PostImportPluginSkeletonTrackOrganizer::internal_process(InternalImportCategory p_category, Node *p_base_scene, Node *p_node, Ref<Resource> p_resource, const Dictionary &p_options) {
+	if (p_category == INTERNAL_IMPORT_CATEGORY_SKELETON_3D_NODE) {
+		// Prepare objects.
+		Object *map = p_options["retarget/bone_map"].get_validated_object();
+		if (!map) {
+			return;
+		}
+		BoneMap *bone_map = Object::cast_to<BoneMap>(map);
+		Ref<SkeletonProfile> profile = bone_map->get_profile();
+		if (!profile.is_valid()) {
+			return;
+		}
+		Skeleton3D *src_skeleton = Object::cast_to<Skeleton3D>(p_node);
+		if (!src_skeleton) {
+			return;
+		}
+		bool remove_positions = bool(p_options["retarget/remove_tracks/unimportant_positions"]);
+		bool remove_unmapped_bones = bool(p_options["retarget/remove_tracks/unmapped_bones"]);
+
+		if (!remove_positions && !remove_unmapped_bones) {
+			return;
+		}
+
+		TypedArray<Node> nodes = p_base_scene->find_children("*", "AnimationPlayer");
+		while (nodes.size()) {
+			AnimationPlayer *ap = Object::cast_to<AnimationPlayer>(nodes.pop_back());
+			List<StringName> anims;
+			ap->get_animation_list(&anims);
+			for (const StringName &name : anims) {
+				Ref<Animation> anim = ap->get_animation(name);
+				int track_len = anim->get_track_count();
+				Vector<int> remove_indices;
+				for (int i = 0; i < track_len; i++) {
+					if (anim->track_get_path(i).get_subname_count() != 1 || !(anim->track_get_type(i) == Animation::TYPE_POSITION_3D || anim->track_get_type(i) == Animation::TYPE_ROTATION_3D || anim->track_get_type(i) == Animation::TYPE_SCALE_3D)) {
+						continue;
+					}
+
+					String track_path = String(anim->track_get_path(i).get_concatenated_names());
+					Node *node = (ap->get_node(ap->get_root()))->get_node(NodePath(track_path));
+					if (node) {
+						Skeleton3D *track_skeleton = Object::cast_to<Skeleton3D>(node);
+						if (track_skeleton && track_skeleton == src_skeleton) {
+							StringName bn = anim->track_get_path(i).get_subname(0);
+							if (bn) {
+								int prof_idx = profile->find_bone(bone_map->find_profile_bone_name(bn));
+								if (remove_unmapped_bones && prof_idx < 0) {
+									remove_indices.push_back(i);
+									continue;
+								}
+								if (remove_positions && anim->track_get_type(i) == Animation::TYPE_POSITION_3D && prof_idx >= 0) {
+									StringName prof_bn = profile->get_bone_name(prof_idx);
+									if (prof_bn == profile->get_root_bone() || prof_bn == profile->get_scale_base_bone()) {
+										continue;
+									}
+									remove_indices.push_back(i);
+								}
+							}
+						}
+					}
+				}
+
+				remove_indices.reverse();
+				for (int i = 0; i < remove_indices.size(); i++) {
+					anim->remove_track(remove_indices[i]);
+				}
+			}
+		}
+	}
+}
+
+PostImportPluginSkeletonTrackOrganizer::PostImportPluginSkeletonTrackOrganizer() {
+}

editor/import/post_import_plugin_skeleton_track_organizer.h

@@ -0,0 +1,46 @@
+/*************************************************************************/
+/*  post_import_plugin_skeleton_track_organizer.h                        */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 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.                */
+/*************************************************************************/
+
+#ifndef POST_IMPORT_PLUGIN_SKELETON_TRACK_ORGANIZER_H
+#define POST_IMPORT_PLUGIN_SKELETON_TRACK_ORGANIZER_H
+
+#include "resource_importer_scene.h"
+
+class PostImportPluginSkeletonTrackOrganizer : public EditorScenePostImportPlugin {
+	GDCLASS(PostImportPluginSkeletonTrackOrganizer, EditorScenePostImportPlugin);
+
+public:
+	virtual void get_internal_import_options(InternalImportCategory p_category, List<ResourceImporter::ImportOption> *r_options) override;
+	virtual void internal_process(InternalImportCategory p_category, Node *p_base_scene, Node *p_node, Ref<Resource> p_resource, const Dictionary &p_options) override;
+
+	PostImportPluginSkeletonTrackOrganizer();
+};
+
+#endif // POST_IMPORT_PLUGIN_SKELETON_TRACK_ORGANIZER_H

editor/import/resource_importer_scene.cpp

@@ -743,6 +743,163 @@ Node *ResourceImporterScene::_pre_fix_node(Node *p_node, Node *p_root, HashMap<R
 	return p_node;
 }
 
+Node *ResourceImporterScene::_pre_fix_animations(Node *p_node, Node *p_root, const Dictionary &p_node_data, const Dictionary &p_animation_data, float p_animation_fps) {
+	// children first
+	for (int i = 0; i < p_node->get_child_count(); i++) {
+		Node *r = _pre_fix_animations(p_node->get_child(i), p_root, p_node_data, p_animation_data, p_animation_fps);
+		if (!r) {
+			i--; //was erased
+		}
+	}
+
+	String import_id = p_node->get_meta("import_id", "PATH:" + p_root->get_path_to(p_node));
+
+	Dictionary node_settings;
+	if (p_node_data.has(import_id)) {
+		node_settings = p_node_data[import_id];
+	}
+
+	{
+		//make sure this is unique
+		node_settings = node_settings.duplicate(true);
+		//fill node settings for this node with default values
+		List<ImportOption> iopts;
+		get_internal_import_options(INTERNAL_IMPORT_CATEGORY_ANIMATION_NODE, &iopts);
+		for (const ImportOption &E : iopts) {
+			if (!node_settings.has(E.option.name)) {
+				node_settings[E.option.name] = E.default_value;
+			}
+		}
+	}
+
+	if (Object::cast_to<AnimationPlayer>(p_node)) {
+		AnimationPlayer *ap = Object::cast_to<AnimationPlayer>(p_node);
+
+		Array animation_clips;
+		{
+			int clip_count = node_settings["clips/amount"];
+
+			for (int i = 0; i < clip_count; i++) {
+				String name = node_settings["clip_" + itos(i + 1) + "/name"];
+				int from_frame = node_settings["clip_" + itos(i + 1) + "/start_frame"];
+				int end_frame = node_settings["clip_" + itos(i + 1) + "/end_frame"];
+				Animation::LoopMode loop_mode = static_cast<Animation::LoopMode>((int)node_settings["clip_" + itos(i + 1) + "/loop_mode"]);
+				bool save_to_file = node_settings["clip_" + itos(i + 1) + "/save_to_file/enabled"];
+				bool save_to_path = node_settings["clip_" + itos(i + 1) + "/save_to_file/path"];
+				bool save_to_file_keep_custom = node_settings["clip_" + itos(i + 1) + "/save_to_file/keep_custom_tracks"];
+
+				animation_clips.push_back(name);
+				animation_clips.push_back(from_frame / p_animation_fps);
+				animation_clips.push_back(end_frame / p_animation_fps);
+				animation_clips.push_back(loop_mode);
+				animation_clips.push_back(save_to_file);
+				animation_clips.push_back(save_to_path);
+				animation_clips.push_back(save_to_file_keep_custom);
+			}
+		}
+
+		if (animation_clips.size()) {
+			_create_clips(ap, animation_clips, true);
+		} else {
+			List<StringName> anims;
+			ap->get_animation_list(&anims);
+			AnimationImportTracks import_tracks_mode[TRACK_CHANNEL_MAX] = {
+				AnimationImportTracks(int(node_settings["import_tracks/position"])),
+				AnimationImportTracks(int(node_settings["import_tracks/rotation"])),
+				AnimationImportTracks(int(node_settings["import_tracks/scale"]))
+			};
+			if (anims.size() > 1 && (import_tracks_mode[0] != ANIMATION_IMPORT_TRACKS_IF_PRESENT || import_tracks_mode[1] != ANIMATION_IMPORT_TRACKS_IF_PRESENT || import_tracks_mode[2] != ANIMATION_IMPORT_TRACKS_IF_PRESENT)) {
+				_optimize_track_usage(ap, import_tracks_mode);
+			}
+		}
+	}
+
+	return p_node;
+}
+
+Node *ResourceImporterScene::_post_fix_animations(Node *p_node, Node *p_root, const Dictionary &p_node_data, const Dictionary &p_animation_data, float p_animation_fps) {
+	// children first
+	for (int i = 0; i < p_node->get_child_count(); i++) {
+		Node *r = _post_fix_animations(p_node->get_child(i), p_root, p_node_data, p_animation_data, p_animation_fps);
+		if (!r) {
+			i--; //was erased
+		}
+	}
+
+	String import_id = p_node->get_meta("import_id", "PATH:" + p_root->get_path_to(p_node));
+
+	Dictionary node_settings;
+	if (p_node_data.has(import_id)) {
+		node_settings = p_node_data[import_id];
+	}
+
+	{
+		//make sure this is unique
+		node_settings = node_settings.duplicate(true);
+		//fill node settings for this node with default values
+		List<ImportOption> iopts;
+		get_internal_import_options(INTERNAL_IMPORT_CATEGORY_ANIMATION_NODE, &iopts);
+		for (const ImportOption &E : iopts) {
+			if (!node_settings.has(E.option.name)) {
+				node_settings[E.option.name] = E.default_value;
+			}
+		}
+	}
+
+	if (Object::cast_to<AnimationPlayer>(p_node)) {
+		AnimationPlayer *ap = Object::cast_to<AnimationPlayer>(p_node);
+
+		bool use_optimizer = node_settings["optimizer/enabled"];
+		float anim_optimizer_linerr = node_settings["optimizer/max_linear_error"];
+		float anim_optimizer_angerr = node_settings["optimizer/max_angular_error"];
+		float anim_optimizer_maxang = node_settings["optimizer/max_angle"];
+
+		if (use_optimizer) {
+			_optimize_animations(ap, anim_optimizer_linerr, anim_optimizer_angerr, anim_optimizer_maxang);
+		}
+
+		bool use_compression = node_settings["compression/enabled"];
+		int anim_compression_page_size = node_settings["compression/page_size"];
+
+		if (use_compression) {
+			_compress_animations(ap, anim_compression_page_size);
+		}
+
+		List<StringName> anims;
+		ap->get_animation_list(&anims);
+		for (const StringName &name : anims) {
+			Ref<Animation> anim = ap->get_animation(name);
+			if (p_animation_data.has(name)) {
+				Dictionary anim_settings = p_animation_data[name];
+				{
+					//fill with default values
+					List<ImportOption> iopts;
+					get_internal_import_options(INTERNAL_IMPORT_CATEGORY_ANIMATION, &iopts);
+					for (const ImportOption &F : iopts) {
+						if (!anim_settings.has(F.option.name)) {
+							anim_settings[F.option.name] = F.default_value;
+						}
+					}
+				}
+
+				anim->set_loop_mode(static_cast<Animation::LoopMode>((int)anim_settings["settings/loop_mode"]));
+				bool save = anim_settings["save_to_file/enabled"];
+				String path = anim_settings["save_to_file/path"];
+				bool keep_custom = anim_settings["save_to_file/keep_custom_tracks"];
+
+				Ref<Animation> saved_anim = _save_animation_to_file(anim, save, path, keep_custom);
+
+				if (saved_anim != anim) {
+					Ref<AnimationLibrary> al = ap->get_animation_library(ap->find_animation_library(anim));
+					al->add_animation(name, saved_anim); //replace
+				}
+			}
+		}
+	}
+
+	return p_node;
+}
+
 Node *ResourceImporterScene::_post_fix_node(Node *p_node, Node *p_root, HashMap<Ref<ImporterMesh>, Vector<Ref<Shape3D>>> &collision_map, Pair<PackedVector3Array, PackedInt32Array> &r_occluder_arrays, HashSet<Ref<ImporterMesh>> &r_scanned_meshes, const Dictionary &p_node_data, const Dictionary &p_material_data, const Dictionary &p_animation_data, float p_animation_fps) {
 	// children first
 	for (int i = 0; i < p_node->get_child_count(); i++) {
@@ -1012,83 +1169,6 @@ Node *ResourceImporterScene::_post_fix_node(Node *p_node, Node *p_root, HashMap<
 			post_importer_plugins.write[i]->internal_process(EditorScenePostImportPlugin::INTERNAL_IMPORT_CATEGORY_ANIMATION_NODE, p_root, p_node, Ref<Resource>(), node_settings);
 		}
 
-		bool use_optimizer = node_settings["optimizer/enabled"];
-		float anim_optimizer_linerr = node_settings["optimizer/max_linear_error"];
-		float anim_optimizer_angerr = node_settings["optimizer/max_angular_error"];
-		float anim_optimizer_maxang = node_settings["optimizer/max_angle"];
-
-		if (use_optimizer) {
-			_optimize_animations(ap, anim_optimizer_linerr, anim_optimizer_angerr, anim_optimizer_maxang);
-		}
-
-		Array animation_clips;
-		{
-			int clip_count = node_settings["clips/amount"];
-
-			for (int i = 0; i < clip_count; i++) {
-				String name = node_settings["clip_" + itos(i + 1) + "/name"];
-				int from_frame = node_settings["clip_" + itos(i + 1) + "/start_frame"];
-				int end_frame = node_settings["clip_" + itos(i + 1) + "/end_frame"];
-				Animation::LoopMode loop_mode = static_cast<Animation::LoopMode>((int)node_settings["clip_" + itos(i + 1) + "/loop_mode"]);
-				bool save_to_file = node_settings["clip_" + itos(i + 1) + "/save_to_file/enabled"];
-				bool save_to_path = node_settings["clip_" + itos(i + 1) + "/save_to_file/path"];
-				bool save_to_file_keep_custom = node_settings["clip_" + itos(i + 1) + "/save_to_file/keep_custom_tracks"];
-
-				animation_clips.push_back(name);
-				animation_clips.push_back(from_frame / p_animation_fps);
-				animation_clips.push_back(end_frame / p_animation_fps);
-				animation_clips.push_back(loop_mode);
-				animation_clips.push_back(save_to_file);
-				animation_clips.push_back(save_to_path);
-				animation_clips.push_back(save_to_file_keep_custom);
-			}
-		}
-
-		if (animation_clips.size()) {
-			_create_clips(ap, animation_clips, true);
-		} else {
-			List<StringName> anims;
-			ap->get_animation_list(&anims);
-			for (const StringName &name : anims) {
-				Ref<Animation> anim = ap->get_animation(name);
-				if (p_animation_data.has(name)) {
-					Dictionary anim_settings = p_animation_data[name];
-					{
-						//fill with default values
-						List<ImportOption> iopts;
-						get_internal_import_options(INTERNAL_IMPORT_CATEGORY_ANIMATION, &iopts);
-						for (const ImportOption &F : iopts) {
-							if (!anim_settings.has(F.option.name)) {
-								anim_settings[F.option.name] = F.default_value;
-							}
-						}
-					}
-
-					anim->set_loop_mode(static_cast<Animation::LoopMode>((int)anim_settings["settings/loop_mode"]));
-					bool save = anim_settings["save_to_file/enabled"];
-					String path = anim_settings["save_to_file/path"];
-					bool keep_custom = anim_settings["save_to_file/keep_custom_tracks"];
-
-					Ref<Animation> saved_anim = _save_animation_to_file(anim, save, path, keep_custom);
-
-					if (saved_anim != anim) {
-						Ref<AnimationLibrary> al = ap->get_animation_library(ap->find_animation_library(anim));
-						al->add_animation(name, saved_anim); //replace
-					}
-				}
-			}
-
-			AnimationImportTracks import_tracks_mode[TRACK_CHANNEL_MAX] = {
-				AnimationImportTracks(int(node_settings["import_tracks/position"])),
-				AnimationImportTracks(int(node_settings["import_tracks/rotation"])),
-				AnimationImportTracks(int(node_settings["import_tracks/scale"]))
-			};
-
-			if (anims.size() > 1 && (import_tracks_mode[0] != ANIMATION_IMPORT_TRACKS_IF_PRESENT || import_tracks_mode[1] != ANIMATION_IMPORT_TRACKS_IF_PRESENT || import_tracks_mode[2] != ANIMATION_IMPORT_TRACKS_IF_PRESENT)) {
-				_optimize_track_usage(ap, import_tracks_mode);
-			}
-		}
-
 		if (post_importer_plugins.size()) {
 			List<StringName> anims;
 			ap->get_animation_list(&anims);
@@ -1113,13 +1193,6 @@ Node *ResourceImporterScene::_post_fix_node(Node *p_node, Node *p_root, HashMap<
 				}
 			}
 		}
-
-		bool use_compression = node_settings["compression/enabled"];
-		int anim_compression_page_size = node_settings["compression/page_size"];
-
-		if (use_compression) {
-			_compress_animations(ap, anim_compression_page_size);
-		}
 	}
 
 	return p_node;
@@ -2099,7 +2172,9 @@ Error ResourceImporterScene::import(const String &p_source_file, const String &p
 		post_importer_plugins.write[i]->pre_process(scene, p_options);
 	}
 
+	_pre_fix_animations(scene, scene, node_data, animation_data, fps);
 	_post_fix_node(scene, scene, collision_map, occluder_arrays, scanned_meshes, node_data, material_data, animation_data, fps);
+	_post_fix_animations(scene, scene, node_data, animation_data, fps);
 
 	String root_type = p_options["nodes/root_type"];
 	root_type = root_type.split(" ")[0]; // full root_type is "ClassName (filename.gd)" for a script global class.

editor/import/resource_importer_scene.h

@@ -274,7 +274,9 @@ public:
 	virtual int get_import_order() const override { return ResourceImporter::IMPORT_ORDER_SCENE; }
 
 	Node *_pre_fix_node(Node *p_node, Node *p_root, HashMap<Ref<ImporterMesh>, Vector<Ref<Shape3D>>> &r_collision_map, Pair<PackedVector3Array, PackedInt32Array> *r_occluder_arrays, List<Pair<NodePath, Node *>> &r_node_renames);
+	Node *_pre_fix_animations(Node *p_node, Node *p_root, const Dictionary &p_node_data, const Dictionary &p_animation_data, float p_animation_fps);
 	Node *_post_fix_node(Node *p_node, Node *p_root, HashMap<Ref<ImporterMesh>, Vector<Ref<Shape3D>>> &collision_map, Pair<PackedVector3Array, PackedInt32Array> &r_occluder_arrays, HashSet<Ref<ImporterMesh>> &r_scanned_meshes, const Dictionary &p_node_data, const Dictionary &p_material_data, const Dictionary &p_animation_data, float p_animation_fps);
+	Node *_post_fix_animations(Node *p_node, Node *p_root, const Dictionary &p_node_data, const Dictionary &p_animation_data, float p_animation_fps);
 
 	Ref<Animation> _save_animation_to_file(Ref<Animation> anim, bool p_save_to_file, String p_save_to_path, bool p_keep_custom_tracks);
 	void _create_clips(AnimationPlayer *anim, const Array &p_clips, bool p_bake_all);

editor/plugins/bone_map_editor_plugin.cpp

@@ -33,6 +33,7 @@
 #include "editor/editor_scale.h"
 #include "editor/import/post_import_plugin_skeleton_renamer.h"
 #include "editor/import/post_import_plugin_skeleton_rest_fixer.h"
+#include "editor/import/post_import_plugin_skeleton_track_organizer.h"
 #include "editor/import/scene_import_settings.h"
 
 void BoneMapperButton::fetch_textures() {
@@ -379,11 +380,15 @@ void BoneMapEditor::create_editors() {
 }
 
 void BoneMapEditor::fetch_objects() {
+	skeleton = nullptr;
 	// Hackey... but it may be the easist way to get a selected object from "ImporterScene".
 	SceneImportSettings *si = SceneImportSettings::get_singleton();
 	if (!si) {
 		return;
 	}
+	if (!si->is_visible()) {
+		return;
+	}
 	Node *selected = si->get_selected_node();
 	if (selected) {
 		Skeleton3D *sk = Object::cast_to<Skeleton3D>(selected);
@@ -404,11 +409,11 @@ void BoneMapEditor::_notification(int p_what) {
 			create_editors();
 		} break;
 		case NOTIFICATION_EXIT_TREE: {
-			if (!bone_mapper) {
-				return;
+			if (bone_mapper) {
+				remove_child(bone_mapper);
+				bone_mapper->queue_delete();
 			}
-			remove_child(bone_mapper);
-			bone_mapper->queue_delete();
+			skeleton = nullptr;
 		} break;
 	}
 }
@@ -444,6 +449,10 @@ BoneMapEditorPlugin::BoneMapEditorPlugin() {
 	inspector_plugin.instantiate();
 	add_inspector_plugin(inspector_plugin);
 
+	Ref<PostImportPluginSkeletonTrackOrganizer> post_import_plugin_track_organizer;
+	post_import_plugin_track_organizer.instantiate();
+	add_scene_post_import_plugin(post_import_plugin_track_organizer);
+
 	Ref<PostImportPluginSkeletonRenamer> post_import_plugin_renamer;
 	post_import_plugin_renamer.instantiate();
 	add_scene_post_import_plugin(post_import_plugin_renamer);

editor/plugins/skeleton_3d_editor_plugin.cpp

@@ -157,7 +157,7 @@ void BoneTransformEditor::_property_keyed(const String &p_path, bool p_advance)
 	if (split.size() == 3 && split[0] == "bones") {
 		int bone_idx = split[1].to_int();
 		if (split[2] == "position") {
-			te->insert_transform_key(skeleton, skeleton->get_bone_name(bone_idx), Animation::TYPE_POSITION_3D, skeleton->get(p_path));
+			te->insert_transform_key(skeleton, skeleton->get_bone_name(bone_idx), Animation::TYPE_POSITION_3D, (Vector3)skeleton->get(p_path) / skeleton->get_motion_scale());
 		}
 		if (split[2] == "rotation") {
 			te->insert_transform_key(skeleton, skeleton->get_bone_name(bone_idx), Animation::TYPE_ROTATION_3D, skeleton->get(p_path));
@@ -319,7 +319,7 @@ void Skeleton3DEditor::insert_keys(const bool p_all_bones) {
 		}
 
 		if (pos_enabled && (p_all_bones || te->has_track(skeleton, name, Animation::TYPE_POSITION_3D))) {
-			te->insert_transform_key(skeleton, name, Animation::TYPE_POSITION_3D, skeleton->get_bone_pose_position(i));
+			te->insert_transform_key(skeleton, name, Animation::TYPE_POSITION_3D, skeleton->get_bone_pose_position(i) / skeleton->get_motion_scale());
 		}
 		if (rot_enabled && (p_all_bones || te->has_track(skeleton, name, Animation::TYPE_ROTATION_3D))) {
 			te->insert_transform_key(skeleton, name, Animation::TYPE_ROTATION_3D, skeleton->get_bone_pose_rotation(i));

scene/3d/skeleton_3d.cpp

@@ -493,6 +493,19 @@ int Skeleton3D::get_bone_axis_forward_enum(int p_bone) {
 	return bones[p_bone].rest_bone_forward_axis;
 }
 
+void Skeleton3D::set_motion_scale(float p_motion_scale) {
+	if (p_motion_scale <= 0) {
+		motion_scale = 1;
+		ERR_FAIL_MSG("Motion scale must be larger than 0.");
+	}
+	motion_scale = p_motion_scale;
+}
+
+float Skeleton3D::get_motion_scale() const {
+	ERR_FAIL_COND_V(motion_scale <= 0, 1);
+	return motion_scale;
+}
+
 // Skeleton creation api
 
 void Skeleton3D::add_bone(const String &p_name) {
@@ -1255,6 +1268,9 @@ void Skeleton3D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("force_update_all_bone_transforms"), &Skeleton3D::force_update_all_bone_transforms);
 	ClassDB::bind_method(D_METHOD("force_update_bone_child_transform", "bone_idx"), &Skeleton3D::force_update_bone_children_transforms);
 
+	ClassDB::bind_method(D_METHOD("set_motion_scale", "motion_scale"), &Skeleton3D::set_motion_scale);
+	ClassDB::bind_method(D_METHOD("get_motion_scale"), &Skeleton3D::get_motion_scale);
+
 	// Helper functions
 	ClassDB::bind_method(D_METHOD("global_pose_to_world_transform", "global_pose"), &Skeleton3D::global_pose_to_world_transform);
 	ClassDB::bind_method(D_METHOD("world_transform_to_global_pose", "world_transform"), &Skeleton3D::world_transform_to_global_pose);
@@ -1278,15 +1294,13 @@ void Skeleton3D::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_modification_stack"), &Skeleton3D::get_modification_stack);
 	ClassDB::bind_method(D_METHOD("execute_modifications", "delta", "execution_mode"), &Skeleton3D::execute_modifications);
 
-#ifndef _3D_DISABLED
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "motion_scale", PROPERTY_HINT_RANGE, "0.001,10,0.001,or_greater"), "set_motion_scale", "get_motion_scale");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "show_rest_only"), "set_show_rest_only", "is_show_rest_only");
+#ifndef _3D_DISABLED
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "animate_physical_bones"), "set_animate_physical_bones", "get_animate_physical_bones");
 #endif // _3D_DISABLED
 
-#ifdef TOOLS_ENABLED
 	ADD_SIGNAL(MethodInfo("pose_updated"));
-#endif // TOOLS_ENABLED
-
 	ADD_SIGNAL(MethodInfo("bone_pose_changed", PropertyInfo(Variant::INT, "bone_idx")));
 	ADD_SIGNAL(MethodInfo("bone_enabled_changed", PropertyInfo(Variant::INT, "bone_idx")));
 	ADD_SIGNAL(MethodInfo("show_rest_only_changed"));

scene/3d/skeleton_3d.h

@@ -146,6 +146,7 @@ private:
 	bool rest_dirty = false;
 
 	bool show_rest_only = false;
+	float motion_scale = 1.0;
 
 	uint64_t version = 1;
 
@@ -211,6 +212,9 @@ public:
 	bool is_show_rest_only() const;
 	void clear_bones();
 
+	void set_motion_scale(float p_motion_scale);
+	float get_motion_scale() const;
+
 	// posing api
 
 	void set_bone_pose_position(int p_bone, const Vector3 &p_position);

scene/animation/animation_player.cpp

@@ -454,6 +454,23 @@ static void _call_object(Object *p_object, const StringName &p_method, const Vec
 	}
 }
 
+Variant AnimationPlayer::_post_process_key_value(const Ref<Animation> &p_anim, int p_track, Variant p_value, const Object *p_object, int p_object_idx) {
+	switch (p_anim->track_get_type(p_track)) {
+#ifndef _3D_DISABLED
+		case Animation::TYPE_POSITION_3D: {
+			if (p_object_idx >= 0) {
+				const Skeleton3D *skel = Object::cast_to<Skeleton3D>(p_object);
+				return Vector3(p_value) * skel->get_motion_scale();
+			}
+			return p_value;
+		} break;
+#endif // _3D_DISABLED
+		default: {
+		} break;
+	}
+	return p_value;
+}
+
 void AnimationPlayer::_animation_process_animation(AnimationData *p_anim, double p_time, double p_delta, float p_interp, bool p_is_current, bool p_seeked, bool p_started, int p_pingponged) {
 	_ensure_node_caches(p_anim);
 	ERR_FAIL_COND(p_anim->node_cache.size() != p_anim->animation->get_track_count());
@@ -498,6 +515,7 @@ void AnimationPlayer::_animation_process_animation(AnimationData *p_anim, double
 				if (err != OK) {
 					continue;
 				}
+				loc = _post_process_key_value(a, i, loc, nc->node_3d, nc->bone_idx);
 
 				if (nc->accum_pass != accum_pass) {
 					ERR_CONTINUE(cache_update_size >= NODE_CACHE_UPDATE_MAX);
@@ -525,6 +543,7 @@ void AnimationPlayer::_animation_process_animation(AnimationData *p_anim, double
 				if (err != OK) {
 					continue;
 				}
+				rot = _post_process_key_value(a, i, rot, nc->node_3d, nc->bone_idx);
 
 				if (nc->accum_pass != accum_pass) {
 					ERR_CONTINUE(cache_update_size >= NODE_CACHE_UPDATE_MAX);
@@ -552,6 +571,7 @@ void AnimationPlayer::_animation_process_animation(AnimationData *p_anim, double
 				if (err != OK) {
 					continue;
 				}
+				scale = _post_process_key_value(a, i, scale, nc->node_3d, nc->bone_idx);
 
 				if (nc->accum_pass != accum_pass) {
 					ERR_CONTINUE(cache_update_size >= NODE_CACHE_UPDATE_MAX);
@@ -579,6 +599,7 @@ void AnimationPlayer::_animation_process_animation(AnimationData *p_anim, double
 				if (err != OK) {
 					continue;
 				}
+				blend = _post_process_key_value(a, i, blend, nc->node_blend_shape, nc->blend_shape_idx);
 
 				if (nc->accum_pass != accum_pass) {
 					ERR_CONTINUE(cache_update_size >= NODE_CACHE_UPDATE_MAX);
@@ -631,9 +652,9 @@ void AnimationPlayer::_animation_process_animation(AnimationData *p_anim, double
 					if (p_time < first_key_time) {
 						double c = Math::ease(p_time / first_key_time, transition);
 						Variant first_value = a->track_get_key_value(i, first_key);
+						first_value = _post_process_key_value(a, i, first_value, nc->node);
 						Variant interp_value;
 						Variant::interpolate(pa->capture, first_value, c, interp_value);
-
 						if (pa->accum_pass != accum_pass) {
 							ERR_CONTINUE(cache_update_prop_size >= NODE_CACHE_UPDATE_MAX);
 							cache_update_prop[cache_update_prop_size++] = pa;
@@ -653,6 +674,7 @@ void AnimationPlayer::_animation_process_animation(AnimationData *p_anim, double
 					if (value == Variant()) {
 						continue;
 					}
+					value = _post_process_key_value(a, i, value, nc->node);
 
 					if (pa->accum_pass != accum_pass) {
 						ERR_CONTINUE(cache_update_prop_size >= NODE_CACHE_UPDATE_MAX);
@@ -669,6 +691,7 @@ void AnimationPlayer::_animation_process_animation(AnimationData *p_anim, double
 
 					for (int &F : indices) {
 						Variant value = a->track_get_key_value(i, F);
+						value = _post_process_key_value(a, i, value, nc->node);
 						switch (pa->special) {
 							case SP_NONE: {
 								bool valid;
@@ -753,6 +776,7 @@ void AnimationPlayer::_animation_process_animation(AnimationData *p_anim, double
 				TrackNodeCache::BezierAnim *ba = &E->value;
 
 				real_t bezier = a->bezier_track_interpolate(i, p_time);
+				bezier = _post_process_key_value(a, i, bezier, nc->node);
 				if (ba->accum_pass != accum_pass) {
 					ERR_CONTINUE(cache_update_bezier_size >= NODE_CACHE_UPDATE_MAX);
 					cache_update_bezier[cache_update_bezier_size++] = ba;

scene/animation/animation_player.h

@@ -316,6 +316,8 @@ protected:
 
 	static void _bind_methods();
 
+	virtual Variant _post_process_key_value(const Ref<Animation> &p_anim, int p_track, Variant p_value, const Object *p_object, int p_object_idx = -1);
+
 public:
 	StringName find_animation(const Ref<Animation> &p_animation) const;
 	StringName find_animation_library(const Ref<Animation> &p_animation) const;

scene/animation/animation_tree.cpp

@@ -1054,7 +1054,9 @@ void AnimationTree::_process_graph(double p_delta) {
 									if (err != OK) {
 										continue;
 									}
+									loc[0] = _post_process_key_value(a, i, loc[0], t->object, t->bone_idx);
 									a->position_track_interpolate(i, (double)a->get_length(), &loc[1]);
+									loc[1] = _post_process_key_value(a, i, loc[1], t->object, t->bone_idx);
 									t->loc += (loc[1] - loc[0]) * blend;
 									prev_time = 0;
 								}
@@ -1064,7 +1066,9 @@ void AnimationTree::_process_graph(double p_delta) {
 									if (err != OK) {
 										continue;
 									}
+									loc[0] = _post_process_key_value(a, i, loc[0], t->object, t->bone_idx);
 									a->position_track_interpolate(i, 0, &loc[1]);
+									loc[1] = _post_process_key_value(a, i, loc[1], t->object, t->bone_idx);
 									t->loc += (loc[1] - loc[0]) * blend;
 									prev_time = (double)a->get_length();
 								}
@@ -1074,8 +1078,10 @@ void AnimationTree::_process_graph(double p_delta) {
 							if (err != OK) {
 								continue;
 							}
+							loc[0] = _post_process_key_value(a, i, loc[0], t->object, t->bone_idx);
 
 							a->position_track_interpolate(i, time, &loc[1]);
+							loc[1] = _post_process_key_value(a, i, loc[1], t->object, t->bone_idx);
 							t->loc += (loc[1] - loc[0]) * blend;
 							prev_time = !backward ? 0 : (double)a->get_length();
 
@@ -1092,6 +1098,7 @@ void AnimationTree::_process_graph(double p_delta) {
 							if (err != OK) {
 								continue;
 							}
+							loc = _post_process_key_value(a, i, loc, t->object, t->bone_idx);
 
 							t->loc += (loc - t->init_loc) * blend;
 						}
@@ -1150,7 +1157,9 @@ void AnimationTree::_process_graph(double p_delta) {
 									if (err != OK) {
 										continue;
 									}
+									rot[0] = _post_process_key_value(a, i, rot[0], t->object, t->bone_idx);
 									a->rotation_track_interpolate(i, (double)a->get_length(), &rot[1]);
+									rot[1] = _post_process_key_value(a, i, rot[1], t->object, t->bone_idx);
 									t->rot = (t->rot * Quaternion().slerp(rot[0].inverse() * rot[1], blend)).normalized();
 									prev_time = 0;
 								}
@@ -1160,6 +1169,7 @@ void AnimationTree::_process_graph(double p_delta) {
 									if (err != OK) {
 										continue;
 									}
+									rot[0] = _post_process_key_value(a, i, rot[0], t->object, t->bone_idx);
 									a->rotation_track_interpolate(i, 0, &rot[1]);
 									t->rot = (t->rot * Quaternion().slerp(rot[0].inverse() * rot[1], blend)).normalized();
 									prev_time = (double)a->get_length();
@@ -1170,8 +1180,10 @@ void AnimationTree::_process_graph(double p_delta) {
 							if (err != OK) {
 								continue;
 							}
+							rot[0] = _post_process_key_value(a, i, rot[0], t->object, t->bone_idx);
 
 							a->rotation_track_interpolate(i, time, &rot[1]);
+							rot[1] = _post_process_key_value(a, i, rot[1], t->object, t->bone_idx);
 							t->rot = (t->rot * Quaternion().slerp(rot[0].inverse() * rot[1], blend)).normalized();
 							prev_time = !backward ? 0 : (double)a->get_length();
 
@@ -1188,6 +1200,7 @@ void AnimationTree::_process_graph(double p_delta) {
 							if (err != OK) {
 								continue;
 							}
+							rot = _post_process_key_value(a, i, rot, t->object, t->bone_idx);
 
 							t->rot = (t->rot * Quaternion().slerp(t->init_rot.inverse() * rot, blend)).normalized();
 						}
@@ -1246,8 +1259,10 @@ void AnimationTree::_process_graph(double p_delta) {
 									if (err != OK) {
 										continue;
 									}
+									scale[0] = _post_process_key_value(a, i, scale[0], t->object, t->bone_idx);
 									a->scale_track_interpolate(i, (double)a->get_length(), &scale[1]);
 									t->scale += (scale[1] - scale[0]) * blend;
+									scale[1] = _post_process_key_value(a, i, scale[1], t->object, t->bone_idx);
 									prev_time = 0;
 								}
 							} else {
@@ -1256,7 +1271,9 @@ void AnimationTree::_process_graph(double p_delta) {
 									if (err != OK) {
 										continue;
 									}
+									scale[0] = _post_process_key_value(a, i, scale[0], t->object, t->bone_idx);
 									a->scale_track_interpolate(i, 0, &scale[1]);
+									scale[1] = _post_process_key_value(a, i, scale[1], t->object, t->bone_idx);
 									t->scale += (scale[1] - scale[0]) * blend;
 									prev_time = (double)a->get_length();
 								}
@@ -1266,8 +1283,10 @@ void AnimationTree::_process_graph(double p_delta) {
 							if (err != OK) {
 								continue;
 							}
+							scale[0] = _post_process_key_value(a, i, scale[0], t->object, t->bone_idx);
 
 							a->scale_track_interpolate(i, time, &scale[1]);
+							scale[1] = _post_process_key_value(a, i, scale[1], t->object, t->bone_idx);
 							t->scale += (scale[1] - scale[0]) * blend;
 							prev_time = !backward ? 0 : (double)a->get_length();
 
@@ -1284,6 +1303,7 @@ void AnimationTree::_process_graph(double p_delta) {
 							if (err != OK) {
 								continue;
 							}
+							scale = _post_process_key_value(a, i, scale, t->object, t->bone_idx);
 
 							t->scale += (scale - t->init_scale) * blend;
 						}
@@ -1306,6 +1326,7 @@ void AnimationTree::_process_graph(double p_delta) {
 						if (err != OK) {
 							continue;
 						}
+						value = _post_process_key_value(a, i, value, t->object, t->shape_index);
 
 						t->value += (value - t->init_value) * blend;
 #endif // _3D_DISABLED
@@ -1317,6 +1338,7 @@ void AnimationTree::_process_graph(double p_delta) {
 
 						if (update_mode == Animation::UPDATE_CONTINUOUS || update_mode == Animation::UPDATE_CAPTURE) {
 							Variant value = a->value_track_interpolate(i, time);
+							value = _post_process_key_value(a, i, value, t->object);
 
 							if (value == Variant()) {
 								continue;
@@ -1344,12 +1366,14 @@ void AnimationTree::_process_graph(double p_delta) {
 									continue;
 								}
 								Variant value = a->track_get_key_value(i, idx);
+								value = _post_process_key_value(a, i, value, t->object);
 								t->object->set_indexed(t->subpath, value);
 							} else {
 								List<int> indices;
 								a->value_track_get_key_indices(i, time, delta, &indices, pingponged);
 								for (int &F : indices) {
 									Variant value = a->track_get_key_value(i, F);
+									value = _post_process_key_value(a, i, value, t->object);
 									t->object->set_indexed(t->subpath, value);
 								}
 							}
@@ -1388,6 +1412,7 @@ void AnimationTree::_process_graph(double p_delta) {
 						TrackCacheBezier *t = static_cast<TrackCacheBezier *>(track);
 
 						real_t bezier = a->bezier_track_interpolate(i, time);
+						bezier = _post_process_key_value(a, i, bezier, t->object);
 
 						if (t->process_pass != process_pass) {
 							t->process_pass = process_pass;
@@ -1663,6 +1688,23 @@ void AnimationTree::_process_graph(double p_delta) {
 	}
 }
 
+Variant AnimationTree::_post_process_key_value(const Ref<Animation> &p_anim, int p_track, Variant p_value, const Object *p_object, int p_object_idx) {
+	switch (p_anim->track_get_type(p_track)) {
+#ifndef _3D_DISABLED
+		case Animation::TYPE_POSITION_3D: {
+			if (p_object_idx >= 0) {
+				const Skeleton3D *skel = Object::cast_to<Skeleton3D>(p_object);
+				return Vector3(p_value) * skel->get_motion_scale();
+			}
+			return p_value;
+		} break;
+#endif // _3D_DISABLED
+		default: {
+		} break;
+	}
+	return p_value;
+}
+
 void AnimationTree::advance(real_t p_time) {
 	_process_graph(p_time);
 }

scene/animation/animation_tree.h

@@ -321,6 +321,8 @@ protected:
 	void _notification(int p_what);
 	static void _bind_methods();
 
+	virtual Variant _post_process_key_value(const Ref<Animation> &p_anim, int p_track, Variant p_value, const Object *p_object, int p_object_idx = -1);
+
 public:
 	void set_tree_root(const Ref<AnimationNode> &p_root);
 	Ref<AnimationNode> get_tree_root() const;

scene/resources/skeleton_profile.cpp

@@ -123,12 +123,20 @@ bool SkeletonProfile::_get(const StringName &p_path, Variant &r_ret) const {
 
 void SkeletonProfile::_validate_property(PropertyInfo &property) const {
 	if (is_read_only) {
-		if (property.name == ("group_size") || property.name == ("bone_size")) {
+		if (property.name == ("group_size") || property.name == ("bone_size") || property.name == ("root_bone") || property.name == ("scale_base_bone")) {
 			property.usage = PROPERTY_USAGE_NO_EDITOR;
 			return;
 		}
 	}
 
+	if (property.name == ("root_bone") || property.name == ("scale_base_bone")) {
+		String hint = "";
+		for (int i = 0; i < bones.size(); i++) {
+			hint += i == 0 ? String(bones[i].bone_name) : "," + String(bones[i].bone_name);
+		}
+		property.hint_string = hint;
+	}
+
 	PackedStringArray split = property.name.split("/");
 	if (split.size() == 3 && split[0] == "bones") {
 		if (split[2] == "bone_tail" && get_tail_direction(split[1].to_int()) != TAIL_DIRECTION_SPECIFIC_CHILD) {
@@ -168,6 +176,28 @@ void SkeletonProfile::_get_property_list(List<PropertyInfo> *p_list) const {
 	}
 }
 
+StringName SkeletonProfile::get_root_bone() {
+	return root_bone;
+}
+
+void SkeletonProfile::set_root_bone(StringName p_bone_name) {
+	if (is_read_only) {
+		return;
+	}
+	root_bone = p_bone_name;
+}
+
+StringName SkeletonProfile::get_scale_base_bone() {
+	return scale_base_bone;
+}
+
+void SkeletonProfile::set_scale_base_bone(StringName p_bone_name) {
+	if (is_read_only) {
+		return;
+	}
+	scale_base_bone = p_bone_name;
+}
+
 int SkeletonProfile::get_group_size() {
 	return groups.size();
 }
@@ -361,6 +391,12 @@ bool SkeletonProfile::has_bone(StringName p_bone_name) {
 }
 
 void SkeletonProfile::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("set_root_bone", "bone_name"), &SkeletonProfile::set_root_bone);
+	ClassDB::bind_method(D_METHOD("get_root_bone"), &SkeletonProfile::get_root_bone);
+
+	ClassDB::bind_method(D_METHOD("set_scale_base_bone", "bone_name"), &SkeletonProfile::set_scale_base_bone);
+	ClassDB::bind_method(D_METHOD("get_scale_base_bone"), &SkeletonProfile::get_scale_base_bone);
+
 	ClassDB::bind_method(D_METHOD("set_group_size", "size"), &SkeletonProfile::set_group_size);
 	ClassDB::bind_method(D_METHOD("get_group_size"), &SkeletonProfile::get_group_size);
 
@@ -396,6 +432,9 @@ void SkeletonProfile::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("get_group", "bone_idx"), &SkeletonProfile::get_group);
 	ClassDB::bind_method(D_METHOD("set_group", "bone_idx", "group"), &SkeletonProfile::set_group);
 
+	ADD_PROPERTY(PropertyInfo(Variant::STRING_NAME, "root_bone", PROPERTY_HINT_ENUM_SUGGESTION, ""), "set_root_bone", "get_root_bone");
+	ADD_PROPERTY(PropertyInfo(Variant::STRING_NAME, "scale_base_bone", PROPERTY_HINT_ENUM_SUGGESTION, ""), "set_scale_base_bone", "get_scale_base_bone");
+
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "group_size", PROPERTY_HINT_RANGE, "0,100,1", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_ARRAY, "Groups,groups/"), "set_group_size", "get_group_size");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "bone_size", PROPERTY_HINT_RANGE, "0,100,1", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_ARRAY, "Bones,bones/"), "set_bone_size", "get_bone_size");
 
@@ -415,6 +454,9 @@ SkeletonProfile::~SkeletonProfile() {
 SkeletonProfileHumanoid::SkeletonProfileHumanoid() {
 	is_read_only = true;
 
+	root_bone = "Root";
+	scale_base_bone = "Hips";
+
 	groups.resize(4);
 
 	groups.write[0].group_name = "Body";

scene/resources/skeleton_profile.h

@@ -64,6 +64,9 @@ protected:
 		bool require = false;
 	};
 
+	StringName root_bone;
+	StringName scale_base_bone;
+
 	Vector<SkeletonProfileGroup> groups;
 	Vector<SkeletonProfileBone> bones;
 
@@ -74,6 +77,12 @@ protected:
 	static void _bind_methods();
 
 public:
+	StringName get_root_bone();
+	void set_root_bone(StringName p_bone_name);
+
+	StringName get_scale_base_bone();
+	void set_scale_base_bone(StringName p_bone_name);
+
 	int get_group_size();
 	void set_group_size(int p_size);