Bone

Stores a bone's current pose.

A bone has a local transform which is used to compute its world transform. A bone also has an applied transform, which is a local transform that can be applied to compute the world transform. The local transform and applied transform may differ if a constraint or application code modifies the world transform after it was computed from the local transform.

Instance Members #

Computes the world transform using the parent bone and this bone's local applied transform.

Computes the world transform using the parent bone and this bone's local transform.

See {@link #updateWorldTransformWithData(float, float, float, float, float, float, float)}.

Computes the world transform using the parent bone and the specified local transform. The applied transform is set to the specified local transform. Child bones are not updated.

See World transforms in the Spine Runtimes Guide.

Sets this bone's local transform to the setup pose.

The bone's setup pose data.

The skeleton this bone belongs to.

The parent bone, or null if this is the root bone.

The immediate children of this bone.

Returns false when the bone has not been computed because {@link BoneData#getSkinRequired()} is true and the {@link Skeleton#getSkin() active skin} does not {@link Skin#getBones() contain} this bone.

The local x translation.

The local y translation.

The local rotation in degrees, counter clockwise.

The local scaleX.

The local scaleY.

The local shearX.

The local shearY.

The applied local x translation.

The applied local y translation.

The applied local rotation in degrees, counter clockwise.

The applied local scaleX.

The applied local scaleY.

The applied local shearX.

The applied local shearY.

Computes the applied transform values from the world transform.

If the world transform is modified (by a constraint, {@link #rotateWorld(float)}, etc) then this method should be called so the applied transform matches the world transform. The applied transform may be needed by other code (eg to apply another constraint).

Some information is ambiguous in the world transform, such as -1,-1 scale versus 180 rotation. The applied transform after calling this method is equivalent to the local transform used to compute the world transform, but may not be identical.

Part of the world transform matrix for the X axis. If changed, {@link #updateAppliedTransform()} should be called.

Part of the world transform matrix for the Y axis. If changed, {@link #updateAppliedTransform()} should be called.

Part of the world transform matrix for the X axis. If changed, {@link #updateAppliedTransform()} should be called.

Part of the world transform matrix for the Y axis. If changed, {@link #updateAppliedTransform()} should be called.

The world X position. If changed, {@link #updateAppliedTransform()} should be called.

The world Y position. If changed, {@link #updateAppliedTransform()} should be called.

The world rotation for the X axis, calculated using {@link #a} and {@link #c}.

The world rotation for the Y axis, calculated using {@link #b} and {@link #d}.

The magnitude (always positive) of the world scale X, calculated using {@link #a} and {@link #c}.

The magnitude (always positive) of the world scale Y, calculated using {@link #b} and {@link #d}.

Transforms a point from world coordinates to the bone's local coordinates.

Transforms a point from the bone's local coordinates to world coordinates.

Transforms a world rotation to a local rotation.

Transforms a local rotation to a world rotation.

Rotates the world transform the specified amount.

After changes are made to the world transform, {@link #updateAppliedTransform()} should be called and {@link #update()} will need to be called on any child bones, recursively.