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+/**************************************************************************/
+/* retarget_modifier_3d.cpp */
+/**************************************************************************/
+/* This file is part of: */
+/* REDOT ENGINE */
+/* https://redotengine.org */
+/**************************************************************************/
+/* Copyright (c) 2024-present Redot Engine contributors */
+/* (see REDOT_AUTHORS.md) */
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
+/* */
+/* 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 "retarget_modifier_3d.h"
+
+PackedStringArray RetargetModifier3D::get_configuration_warnings() const {
+ PackedStringArray warnings = SkeletonModifier3D::get_configuration_warnings();
+ if (child_skeletons.is_empty()) {
+ warnings.push_back(RTR("There is no child Skeleton3D!"));
+ }
+ return warnings;
+}
+
+/// Caching
+
+void RetargetModifier3D::_profile_changed(Ref<SkeletonProfile> p_old, Ref<SkeletonProfile> p_new) {
+ if (p_old.is_valid() && p_old->is_connected(SNAME("profile_updated"), callable_mp(this, &RetargetModifier3D::cache_rests_with_reset))) {
+ p_old->disconnect(SNAME("profile_updated"), callable_mp(this, &RetargetModifier3D::cache_rests_with_reset));
+ }
+ profile = p_new;
+ if (p_new.is_valid() && !p_new->is_connected(SNAME("profile_updated"), callable_mp(this, &RetargetModifier3D::cache_rests_with_reset))) {
+ p_new->connect(SNAME("profile_updated"), callable_mp(this, &RetargetModifier3D::cache_rests_with_reset));
+ }
+ cache_rests_with_reset();
+}
+
+void RetargetModifier3D::_skeleton_changed(Skeleton3D *p_old, Skeleton3D *p_new) {
+ if (p_old && p_old->is_connected(SNAME("rest_updated"), callable_mp(this, &RetargetModifier3D::cache_rests))) {
+ p_old->disconnect(SNAME("rest_updated"), callable_mp(this, &RetargetModifier3D::cache_rests));
+ }
+ if (p_new && !p_new->is_connected(SNAME("rest_updated"), callable_mp(this, &RetargetModifier3D::cache_rests))) {
+ p_new->connect(SNAME("rest_updated"), callable_mp(this, &RetargetModifier3D::cache_rests));
+ }
+ cache_rests();
+}
+
+void RetargetModifier3D::cache_rests_with_reset() {
+ _reset_child_skeleton_poses();
+ cache_rests();
+}
+
+void RetargetModifier3D::cache_rests() {
+ source_bone_ids.clear();
+
+ Skeleton3D *source_skeleton = get_skeleton();
+ if (profile.is_null() || !source_skeleton) {
+ return;
+ }
+
+ PackedStringArray bone_names = profile->get_bone_names();
+ for (const String &E : bone_names) {
+ source_bone_ids.push_back(source_skeleton->find_bone(E));
+ }
+
+ for (int i = 0; i < child_skeletons.size(); i++) {
+ _update_child_skeleton_rests(i);
+ }
+}
+
+Vector<RetargetModifier3D::RetargetBoneInfo> RetargetModifier3D::cache_bone_global_rests(Skeleton3D *p_skeleton) {
+ // Retarget global pose in model space:
+ // tgt_global_pose.basis = src_global_pose.basis * src_rest.basis.inv * src_parent_global_rest.basis.inv * tgt_parent_global_rest.basis * tgt_rest.basis
+ // tgt_global_pose.origin = src_global_pose.origin
+ Skeleton3D *source_skeleton = get_skeleton();
+ Vector<RetargetBoneInfo> bone_rests;
+ if (profile.is_null() || !source_skeleton) {
+ return bone_rests;
+ }
+ PackedStringArray bone_names = profile->get_bone_names();
+ for (const String &E : bone_names) {
+ RetargetBoneInfo rbi;
+ int source_bone_id = source_skeleton->find_bone(E);
+ if (source_bone_id >= 0) {
+ Transform3D parent_global_rest;
+ int bone_parent = source_skeleton->get_bone_parent(source_bone_id);
+ if (bone_parent >= 0) {
+ parent_global_rest = source_skeleton->get_bone_global_rest(bone_parent);
+ }
+ rbi.post_basis = source_skeleton->get_bone_rest(source_bone_id).basis.inverse() * parent_global_rest.basis.inverse();
+ }
+ int target_bone_id = p_skeleton->find_bone(E);
+ rbi.bone_id = target_bone_id;
+ if (target_bone_id >= 0) {
+ Transform3D parent_global_rest;
+ int bone_parent = p_skeleton->get_bone_parent(target_bone_id);
+ if (bone_parent >= 0) {
+ parent_global_rest = p_skeleton->get_bone_global_rest(bone_parent);
+ }
+ rbi.post_basis = rbi.post_basis * parent_global_rest.basis * p_skeleton->get_bone_rest(target_bone_id).basis;
+ }
+ bone_rests.push_back(rbi);
+ }
+ return bone_rests;
+}
+
+Vector<RetargetModifier3D::RetargetBoneInfo> RetargetModifier3D::cache_bone_rests(Skeleton3D *p_skeleton) {
+ // Retarget pose in model space:
+ // tgt_pose.basis = tgt_parent_global_rest.basis.inv * src_parent_global_rest.basis * src_pose.basis * src_rest.basis.inv * src_parent_global_rest.basis.inv * tgt_parent_global_rest.basis * tgt_rest.basis
+ // tgt_pose.origin = tgt_parent_global_rest.basis.inv.xform(src_parent_global_rest.basis.xform(src_pose.origin - src_rest.origin)) + tgt_rest.origin
+ Skeleton3D *source_skeleton = get_skeleton();
+ Vector<RetargetBoneInfo> bone_rests;
+ if (profile.is_null() || !source_skeleton) {
+ return bone_rests;
+ }
+ PackedStringArray bone_names = profile->get_bone_names();
+ for (const String &E : bone_names) {
+ RetargetBoneInfo rbi;
+ int source_bone_id = source_skeleton->find_bone(E);
+ if (source_bone_id >= 0) {
+ Transform3D parent_global_rest;
+ int bone_parent = source_skeleton->get_bone_parent(source_bone_id);
+ if (bone_parent >= 0) {
+ parent_global_rest = source_skeleton->get_bone_global_rest(bone_parent);
+ }
+ rbi.pre_basis = parent_global_rest.basis;
+ rbi.post_basis = source_skeleton->get_bone_rest(source_bone_id).basis.inverse() * parent_global_rest.basis.inverse();
+ }
+
+ int target_bone_id = p_skeleton->find_bone(E);
+ rbi.bone_id = target_bone_id;
+ if (target_bone_id >= 0) {
+ Transform3D parent_global_rest;
+ int bone_parent = p_skeleton->get_bone_parent(target_bone_id);
+ if (bone_parent >= 0) {
+ parent_global_rest = p_skeleton->get_bone_global_rest(bone_parent);
+ }
+ rbi.pre_basis = parent_global_rest.basis.inverse() * rbi.pre_basis;
+ rbi.post_basis = rbi.post_basis * parent_global_rest.basis * p_skeleton->get_bone_rest(target_bone_id).basis;
+ }
+ bone_rests.push_back(rbi);
+ }
+ return bone_rests;
+}
+
+void RetargetModifier3D::_update_child_skeleton_rests(int p_child_skeleton_idx) {
+ ERR_FAIL_INDEX(p_child_skeleton_idx, child_skeletons.size());
+ Skeleton3D *c = Object::cast_to<Skeleton3D>(ObjectDB::get_instance(child_skeletons[p_child_skeleton_idx].skeleton_id));
+ if (!c) {
+ return;
+ }
+ if (use_global_pose) {
+ child_skeletons.write[p_child_skeleton_idx].humanoid_bone_rests = cache_bone_global_rests(c);
+ } else {
+ child_skeletons.write[p_child_skeleton_idx].humanoid_bone_rests = cache_bone_rests(c);
+ }
+}
+
+void RetargetModifier3D::_update_child_skeletons() {
+ _reset_child_skeletons();
+
+ for (int i = 0; i < get_child_count(); i++) {
+ RetargetInfo ri;
+ Skeleton3D *c = Object::cast_to<Skeleton3D>(get_child(i));
+ if (c) {
+ int id = child_skeletons.size();
+ ri.skeleton_id = c->get_instance_id();
+ child_skeletons.push_back(ri);
+ c->connect(SNAME("rest_updated"), callable_mp(this, &RetargetModifier3D::_update_child_skeleton_rests).bind(id));
+ }
+ }
+
+ cache_rests();
+ update_configuration_warnings();
+}
+
+void RetargetModifier3D::_reset_child_skeleton_poses() {
+ for (const RetargetInfo &E : child_skeletons) {
+ Skeleton3D *c = Object::cast_to<Skeleton3D>(ObjectDB::get_instance(E.skeleton_id));
+ if (!c) {
+ continue;
+ }
+ if (c->is_connected(SNAME("rest_updated"), callable_mp(this, &RetargetModifier3D::_update_child_skeleton_rests))) {
+ c->disconnect(SNAME("rest_updated"), callable_mp(this, &RetargetModifier3D::_update_child_skeleton_rests));
+ }
+ for (const RetargetBoneInfo &F : E.humanoid_bone_rests) {
+ if (F.bone_id < 0) {
+ continue;
+ }
+ c->reset_bone_pose(F.bone_id);
+ }
+ }
+}
+
+void RetargetModifier3D::_reset_child_skeletons() {
+ _reset_child_skeleton_poses();
+ child_skeletons.clear();
+}
+
+/// General functions
+
+void RetargetModifier3D::add_child_notify(Node *p_child) {
+ if (Object::cast_to<Skeleton3D>(p_child)) {
+ _update_child_skeletons();
+ }
+}
+
+void RetargetModifier3D::move_child_notify(Node *p_child) {
+ if (Object::cast_to<Skeleton3D>(p_child)) {
+ _update_child_skeletons();
+ }
+}
+
+void RetargetModifier3D::remove_child_notify(Node *p_child) {
+ if (Object::cast_to<Skeleton3D>(p_child)) {
+ // Reset after process.
+ callable_mp(this, &RetargetModifier3D::_update_child_skeletons).call_deferred();
+ }
+}
+
+void RetargetModifier3D::_validate_property(PropertyInfo &p_property) const {
+ if (use_global_pose) {
+ if (p_property.name == "position_enabled" || p_property.name == "rotation_enabled" || p_property.name == "scale_enabled") {
+ p_property.usage = PROPERTY_USAGE_NONE;
+ }
+ }
+}
+
+void RetargetModifier3D::_bind_methods() {
+ ClassDB::bind_method(D_METHOD("set_profile", "profile"), &RetargetModifier3D::set_profile);
+ ClassDB::bind_method(D_METHOD("get_profile"), &RetargetModifier3D::get_profile);
+ ClassDB::bind_method(D_METHOD("set_use_global_pose", "use_global_pose"), &RetargetModifier3D::set_use_global_pose);
+ ClassDB::bind_method(D_METHOD("is_using_global_pose"), &RetargetModifier3D::is_using_global_pose);
+ ClassDB::bind_method(D_METHOD("set_position_enabled", "enabled"), &RetargetModifier3D::set_position_enabled);
+ ClassDB::bind_method(D_METHOD("is_position_enabled"), &RetargetModifier3D::is_position_enabled);
+ ClassDB::bind_method(D_METHOD("set_rotation_enabled", "enabled"), &RetargetModifier3D::set_rotation_enabled);
+ ClassDB::bind_method(D_METHOD("is_rotation_enabled"), &RetargetModifier3D::is_rotation_enabled);
+ ClassDB::bind_method(D_METHOD("set_scale_enabled", "enabled"), &RetargetModifier3D::set_scale_enabled);
+ ClassDB::bind_method(D_METHOD("is_scale_enabled"), &RetargetModifier3D::is_scale_enabled);
+
+ ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "profile", PROPERTY_HINT_RESOURCE_TYPE, "SkeletonProfile"), "set_profile", "get_profile");
+ ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_global_pose"), "set_use_global_pose", "is_using_global_pose");
+ ADD_PROPERTY(PropertyInfo(Variant::BOOL, "position_enabled"), "set_position_enabled", "is_position_enabled");
+ ADD_PROPERTY(PropertyInfo(Variant::BOOL, "rotation_enabled"), "set_rotation_enabled", "is_rotation_enabled");
+ ADD_PROPERTY(PropertyInfo(Variant::BOOL, "scale_enabled"), "set_scale_enabled", "is_scale_enabled");
+}
+
+void RetargetModifier3D::_set_active(bool p_active) {
+ if (!p_active) {
+ _reset_child_skeleton_poses();
+ }
+}
+
+void RetargetModifier3D::_retarget_global_pose() {
+ Skeleton3D *source_skeleton = get_skeleton();
+ if (profile.is_null() || !source_skeleton) {
+ return;
+ }
+
+ LocalVector<Transform3D> source_poses;
+ if (influence < 1.0) {
+ for (int source_bone_id : source_bone_ids) {
+ source_poses.push_back(source_bone_id < 0 ? Transform3D() : source_skeleton->get_bone_global_rest(source_bone_id).interpolate_with(source_skeleton->get_bone_global_pose(source_bone_id), influence));
+ }
+ } else {
+ for (int source_bone_id : source_bone_ids) {
+ source_poses.push_back(source_bone_id < 0 ? Transform3D() : source_skeleton->get_bone_global_pose(source_bone_id));
+ }
+ }
+
+ for (const RetargetInfo &E : child_skeletons) {
+ Skeleton3D *target_skeleton = Object::cast_to<Skeleton3D>(ObjectDB::get_instance(E.skeleton_id));
+ if (!target_skeleton) {
+ continue;
+ }
+ for (int i = 0; i < source_bone_ids.size(); i++) {
+ int target_bone_id = E.humanoid_bone_rests[i].bone_id;
+ if (target_bone_id < 0) {
+ continue;
+ }
+ Transform3D retarget_pose = source_poses[i];
+ retarget_pose.basis = retarget_pose.basis * E.humanoid_bone_rests[i].post_basis;
+ target_skeleton->set_bone_global_pose(target_bone_id, retarget_pose);
+ }
+ }
+}
+
+void RetargetModifier3D::_retarget_pose() {
+ Skeleton3D *source_skeleton = get_skeleton();
+ if (profile.is_null() || !source_skeleton) {
+ return;
+ }
+
+ LocalVector<Transform3D> source_poses;
+ if (influence < 1.0) {
+ for (int source_bone_id : source_bone_ids) {
+ source_poses.push_back(source_bone_id < 0 ? Transform3D() : source_skeleton->get_bone_rest(source_bone_id).interpolate_with(source_skeleton->get_bone_pose(source_bone_id), influence));
+ }
+ } else {
+ for (int source_bone_id : source_bone_ids) {
+ source_poses.push_back(source_bone_id < 0 ? Transform3D() : source_skeleton->get_bone_pose(source_bone_id));
+ }
+ }
+
+ for (const RetargetInfo &E : child_skeletons) {
+ Skeleton3D *target_skeleton = Object::cast_to<Skeleton3D>(ObjectDB::get_instance(E.skeleton_id));
+ if (!target_skeleton) {
+ continue;
+ }
+ float motion_scale_ratio = target_skeleton->get_motion_scale() / source_skeleton->get_motion_scale();
+ for (int i = 0; i < source_bone_ids.size(); i++) {
+ int target_bone_id = E.humanoid_bone_rests[i].bone_id;
+ if (target_bone_id < 0) {
+ continue;
+ }
+ int source_bone_id = source_bone_ids[i];
+ if (source_bone_id < 0) {
+ continue;
+ }
+
+ Transform3D extracted_transform = source_poses[i];
+ extracted_transform.basis = E.humanoid_bone_rests[i].pre_basis * extracted_transform.basis * E.humanoid_bone_rests[i].post_basis;
+ extracted_transform.origin = E.humanoid_bone_rests[i].pre_basis.xform((extracted_transform.origin - source_skeleton->get_bone_rest(source_bone_id).origin) * motion_scale_ratio) + target_skeleton->get_bone_rest(target_bone_id).origin;
+
+ Transform3D retarget_pose = target_skeleton->get_bone_pose(target_bone_id);
+ if (enable_position) {
+ retarget_pose.origin = extracted_transform.origin;
+ }
+ if (enable_rotation) {
+ retarget_pose.basis = extracted_transform.basis.get_rotation_quaternion();
+ }
+ if (enable_scale) {
+ retarget_pose.basis.scale_local(extracted_transform.basis.get_scale());
+ }
+ target_skeleton->set_bone_pose(target_bone_id, retarget_pose);
+ }
+ }
+}
+
+void RetargetModifier3D::_process_modification() {
+ if (use_global_pose) {
+ _retarget_global_pose();
+ } else {
+ _retarget_pose();
+ }
+}
+
+void RetargetModifier3D::set_profile(Ref<SkeletonProfile> p_profile) {
+ if (profile == p_profile) {
+ return;
+ }
+ _profile_changed(profile, p_profile);
+}
+
+Ref<SkeletonProfile> RetargetModifier3D::get_profile() const {
+ return profile;
+}
+
+void RetargetModifier3D::set_use_global_pose(bool p_use_global_pose) {
+ if (use_global_pose == p_use_global_pose) {
+ return;
+ }
+
+ use_global_pose = p_use_global_pose;
+ cache_rests_with_reset();
+
+ notify_property_list_changed();
+}
+
+bool RetargetModifier3D::is_using_global_pose() const {
+ return use_global_pose;
+}
+
+void RetargetModifier3D::set_position_enabled(bool p_enabled) {
+ if (enable_position != p_enabled) {
+ _reset_child_skeleton_poses();
+ }
+ enable_position = p_enabled;
+}
+
+bool RetargetModifier3D::is_position_enabled() const {
+ return enable_position;
+}
+
+void RetargetModifier3D::set_rotation_enabled(bool p_enabled) {
+ if (enable_rotation != p_enabled) {
+ _reset_child_skeleton_poses();
+ }
+ enable_rotation = p_enabled;
+}
+
+bool RetargetModifier3D::is_rotation_enabled() const {
+ return enable_rotation;
+}
+
+void RetargetModifier3D::set_scale_enabled(bool p_enabled) {
+ if (enable_scale != p_enabled) {
+ _reset_child_skeleton_poses();
+ }
+ enable_scale = p_enabled;
+}
+
+bool RetargetModifier3D::is_scale_enabled() const {
+ return enable_scale;
+}
+
+void RetargetModifier3D::_notification(int p_what) {
+ switch (p_what) {
+ case NOTIFICATION_ENTER_TREE: {
+ _update_child_skeletons();
+ } break;
+ case NOTIFICATION_EDITOR_PRE_SAVE: {
+ _reset_child_skeleton_poses();
+ } break;
+ case NOTIFICATION_EXIT_TREE: {
+ _reset_child_skeletons();
+ } break;
+ }
+}
+
+RetargetModifier3D::RetargetModifier3D() {
+}
+
+RetargetModifier3D::~RetargetModifier3D() {
+}