Relaciones

Referencia

Modo:

Todos los modos

Panel:

Hueso ‣ Relaciones

El panel Relaciones de huesos.

En este panel será posible administrar la relación de este hueso con su hueso superior. También mostrará las colecciones de huesos a las que el mismo hubiera sido asignado.

Asignación de un superior

Superior

Un ID de datos para seleccionar el hueso a ser asignado como superior.

Jerarquía relativa sólo en modo Pose

Cambiará la forma en que la transformación del hueso será aplicada a sus objetos subordinados.

Conectado

La opción Conectado determinará que la cabeza del hueso esté conectada con la cola del hueso superior.

Transformaciones

La relación entre los huesos tendrá efectos sobre el comportamiento de las transformaciones.

De forma predefinida, los huesos subordinados heredarán:

• La posición de su superior, manteniendo su desplazamiento propio, por supuesto.

• La rotación de su superior (es decir, mantendrán una rotación constante en relación a su superior).

• La escala de su superior, otra vez manteniendo su propio desfasaje.

Ejemplos de transformación de jerarquías de huesos conectados.

El esqueleto en su pose de reposo.

Rotación de uno de los huesos superiores.

Escala de uno de los huesos superiores.

Exactly like standard children objects. You can modify this behavior on a per-bone basis, using the Relations panel in the Bones tab:

Posición local

When disabled, the location transform property is evaluated in the parent bone’s local space, rather than using the bone’s own rest pose local space orientation.

Heredar rotación

When disabled, this will «break» the rotation relationship to the bone’s parent. This means that the child will keep its rotation in the armature object space when its parent is rotated.

Heredar escala

Specifies which effects of parent scaling the bone inherits:

These inheriting behaviors propagate along the bones” hierarchy. So when you scale down a bone, all its descendants are by default scaled down accordingly. However, if you disable one bone’s Inherit Scale or Inherit Rotation property in this «family», this will break the scaling propagation, i.e. this bone and all its descendants will no longer be affected when you scale one of its ancestors.

Completo:

The bone inherits all effects of parent scaling and shear.

Corregir sesgo:

Full parent effects are applied to the rest state of the child, after which any shear is removed in a way that preserves the bone direction, length and volume, and minimally affects roll on average. The result is combined with the local transformation of the child.

If the inherited scale is non-uniform, this does not prevent shear from reappearing due to local rotation of the child bone, or of its children.

Alineado:

Parent scaling is inherited as if the child was oriented the same as the parent, always applying parent X scale over child X scale, and so on.

Promedio:

Inherits a uniform scaling factor that is the total change in the volume of the parent.

Ninguno:

Ignores all scaling and shear of the parent.

Ninguna (antiguo):

Ignores all scaling, provided the parent is not sheared. If it is, there are no guarantees.

This choice replicates the behavior of the old Inherit Scale checkbox, and may be removed in a future release.

Truco

The various Inherit Scale options are provided as tools in avoiding shear that is caused by non-uniform scaling combined with parenting and rotation. There is no obvious best way to achieve that, so different options are useful for different situations.

• Ninguna – Útil para obtener un control completo sobre la escala del subordinado para, por ejemplo, redefinirla manualmente mediante restricciones.

• Promedio – Útil para bloquear la propagación de la compresión y estiramiento entre subsistemas de control, permitiendo a la vez que los cambios uniformes en el tamaño y el volumen sí se propaguen.

• Alineada – Podrá ser usado dentro de cadenas de huesos, p.ej: tentáculos, para propagar la escala a lo largo a lo largo y la escala lateral como lateral, sin importar qué tanto se flexionen los tentáculos. Similar a usar Ninguna con una restricción Copiar escala desde el superior.

• Corregir sesgo – Podría resultar útil en la base de un apéndice, para reasignar la compresión y el estiramiento entre distintos ejes, en base a la diferencia en las orientaciones del superior y el subordinado en la pose de reposo. Se comportará muy parecido a Completa, pero suprimiendo el sesgo.

Examples of transforming parented/connected bones with Inherit Rotation disabled.

The yellow outlined Inherit Rotation disabled bone in the armature.

Rotation of a bone with an Inherit Rotation disabled bone among its descendants.

Scaling of a bone with an Inherit Rotation disabled bone among its descendants.

Connected bones have another specificity: they cannot be moved. Indeed, as their root must be at their parent’s tip, if you do not move the parent, you cannot move the child’s root, but only its tip, which leads to a child rotation. This is exactly what happens, when you press G with a connected bone selected, Blender automatically switches to rotation operation.

Bones relationships also have important consequences on how selections of multiple bones behave when transformed. There are many different situations which may not be included on this list, however, this should give a good idea of the problem:

• Non-related selected bones are transformed independently, as usual.

• When several bones of the same «family» are selected, only the «most parent» ones are really transformed – the descendants are just handled through the parent relationship process, as if they were not selected (see Fig. Scaling bones, some of them related. the third tip bone, outlined in yellow, was only scaled down through the parent relationship, exactly as the unselected ones, even though it is selected and active. Otherwise, it should have been twice smaller!)

  

  Scaling bones, some of them related.

• When connected and unconnected bones are selected, and you start a move operation, only the unconnected bones are affected.

• When a child connected hinge bone is in the selection, and the «most parent» selected one is connected, when you press G, nothing happens, because Blender remains in move operation, which of course has no effect on a connected bone.

So, when posing a chain of bones, you should always edit its elements from the root bone to the tip bone. This process is known as Forward Kinematics (FK). We will see in a later page that Blender features another pose method, called Inverse Kinematics (IK), which allows you to pose a whole chain just by moving its tip.

Nota

This feature is somewhat extended/completed by the pose library.

Colecciones de huesos

This list shows the bone collections the bone is assigned to. Press the eye icon to show or hide the entire bone collection. Press the star icon to show only this bone collection, and others also marked as “solo” Press the X icon to remove the bone from that particular collection.

To assign the bone to other bone collections, either use the M or Shift-M shortcuts (see Moving Bones Between Collections) or go to the Armature properties panel.