diff options
Diffstat (limited to 'scene/3d/skeleton_ik_3d.cpp')
| -rw-r--r-- | scene/3d/skeleton_ik_3d.cpp | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/scene/3d/skeleton_ik_3d.cpp b/scene/3d/skeleton_ik_3d.cpp index f35cd3fbc5..75f54a925b 100644 --- a/scene/3d/skeleton_ik_3d.cpp +++ b/scene/3d/skeleton_ik_3d.cpp @@ -249,6 +249,26 @@ void FabrikInverseKinematic::make_goal(Task *p_task, const Transform3D &p_invers } } +static Vector3 get_bone_axis_forward_vector(Skeleton3D *skeleton, int p_bone) { + // If it is a child/leaf bone... + if (skeleton->get_bone_parent(p_bone) > 0) { + return skeleton->get_bone_rest(p_bone).origin.normalized(); + } + // If it has children... + Vector<int> child_bones = skeleton->get_bone_children(p_bone); + if (child_bones.size() == 0) { + WARN_PRINT_ONCE("Cannot calculate forward direction for bone " + itos(p_bone)); + WARN_PRINT_ONCE("Assuming direction of (0, 1, 0) for bone"); + return Vector3(0, 1, 0); + } + Vector3 combined_child_dir = Vector3(0, 0, 0); + for (int i = 0; i < child_bones.size(); i++) { + combined_child_dir += skeleton->get_bone_rest(child_bones[i]).origin.normalized(); + } + combined_child_dir = combined_child_dir / child_bones.size(); + return combined_child_dir.normalized(); +} + void FabrikInverseKinematic::solve(Task *p_task, real_t blending_delta, bool override_tip_basis, bool p_use_magnet, const Vector3 &p_magnet_position) { if (blending_delta <= 0.01f) { // Before skipping, make sure we undo the global pose overrides @@ -287,8 +307,7 @@ void FabrikInverseKinematic::solve(Task *p_task, real_t blending_delta, bool ove new_bone_pose.origin = ci->current_pos; if (!ci->children.is_empty()) { - p_task->skeleton->update_bone_rest_forward_vector(ci->bone); - Vector3 forward_vector = p_task->skeleton->get_bone_axis_forward_vector(ci->bone); + Vector3 forward_vector = get_bone_axis_forward_vector(p_task->skeleton, ci->bone); // Rotate the bone towards the next bone in the chain: new_bone_pose.basis.rotate_to_align(forward_vector, new_bone_pose.origin.direction_to(ci->children[0].current_pos)); |