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Armature Structure

The very basic armature of the Gingerbread Man tutorial.

Armatures mimic real skeletons. They are made out of bones, which are (by default) rigid elements. But you have more possibilities than with real skeletons: In addition to the “natural” rotation of bones, you can also translate and even scale them! And your bones do not have to be connected to each other; they can be completely free if you want. However, the most natural and useful setups imply that some bones are related to others, forming so-called “chains of bones”, which create some sort of “limbs” in your armature, as detailed below.

Chains of Bones

An armature with two chains of bones.

The bones inside an armature can be completely independent from each other (i.e. the modification of one bone does not affect the others). But this is not often a useful set up: To create a leg, all bones “after” the thigh bone should move “with” it in a well-coordinated manner. This is exactly what happens in armatures – by parenting a bone to the next one in the limb, you create a “chains of bones”. These chains can be ramified. For example, five fingers attached to a single “hand” bone.

Bones are chained by linking the tip of the parent to the root of the child. Root and tip can be connected, i.e. they are always exactly at the same point; or they can be free, like in a standard parent-child object relationship.

A given bone can be the parent of several children, and hence be part of several chains at the same time.

The bone at the beginning of a chain is called its root bone, and the last bone of a chain is the tip bone (don’t confuse them with similar names of bones’ ends!).

Chains of bones are a particularly important topic in posing (especially with the standard forward kinematics versus “automatic” inverse kinematics posing techniques). You create/edit them in Edit mode, but except in case of connected bones, their relationships have no effect on bone transformations in this mode (i.e. transforming a parent bone won’t affect its children).

Editing Bones Relationships

This is detailed in the editing pages, but let us have a quick look at this important feature.

The Armature Bones panel with two bones selected, and their Child of settings highlighted.

The easiest way to manage bones relationships is to use the Relations panel Bone context:

  • First, select the bones you want to edit (selection order does not matter here).
  • To parent a bone to another one, select the name of this parent in its drop-down Parent list.
  • To unparent a bone, just select the void entry in the same Parent list.
  • To connect a bone to its parent, enable its small Con button.
  • To unconnect a bone, disable its Con button.




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This is the old manual!
For the current 2.7x manual see http://www.blender.org/manual/


User Manual

World and Ambient Effects

World

Introduction
World Background

Ambient Effects

Mist
Stars (2.69)


Game Engine

Introduction

Introduction to the Game Engine
Game Logic Screen Layout

Logic

Logic Properties and States
The Logic Editor

Sensors

Introduction to Sensors
Sensor Editing
Common Options
-Actuator Sensor
-Always Sensor
-Collision Sensor
-Delay Sensor
-Joystick Sensor
-Keyboard Sensor
-Message Sensor
-Mouse Sensor
-Near Sensor
-Property Sensor
-Radar Sensor
-Random Sensor
-Ray Sensor
-Touch Sensor

Controllers

Introduction
Controller Editing
-AND Controller
-OR Controller
-NAND Controller
-NOR Controller
-XOR Controller
-XNOR Controller
-Expression Controller
-Python Controller

Actuators

Introduction
Actuator Editing
Common Options
-2D Filters Actuator
-Action Actuator
-Camera Actuator
-Constraint Actuator
-Edit Object Actuator
-Game Actuator
-Message Actuator
-Motion Actuator
-Parent Actuator
-Property Actuator
-Random Actuator
-Scene Actuator
-Sound Actuator
-State Actuator
-Steering Actuator
-Visibility Actuator

Game Properties

Introduction
Property Editing

Game States

Introduction

Camera

Introduction
Camera Editing
Stereo Camera
Dome Camera

World

Introduction

Physics

Introduction
Material Physics
No Collision Object
Static Object
Dynamic Object
Rigid Body Object
Soft Body Object
Vehicle Controller
Sensor Object
Occluder Object

Path Finding

Navigation Mesh Modifier

Game Performance

Introduction
System
Display
Framerate and Profile
Level of Detail

Python API

Introduction
Bullet physics
VideoTexture

Deploying

Standalone Player
Licensing of Blender Game

Android Support

Android Game development