From BlenderWiki

Jump to: navigation, search
Blender3D FreeTip.gif
IMPORTANT! Do not update this page!
We have moved the Blender User Manual to a new location. Please do not update this page, as it will be locked soon.


Page status (reviewing guidelines)

Text

Needs a more detailed Uses + Functions section


Proposed fixes: none

Empties

The "Empty" is a null object. It contains no real Geometry, but can be used as a handle for many purposes.

Settings

Plain Axes
Draws as six lines, initially with one pointing in each of the +X,-X,+Y,-Y,+Z,and -Z axis directions.
Arrows
Draws as arrows, initially pointing in the positive X,Y, and Z axis directions, each with a label.
Single Arrow
Draws as a single arrow, initially pointing in the +Z axis direction.
Circle
Draws as a circle initially in the XZ plane.
Cube
Draws as a cube, initially aligned to the XYZ axes.
Sphere
Draws as an implied sphere defined by 3 circles. Initially, the circles are aligned, one each, to the X, Y, and Z axes.
Cone
Draws as a cone, initially pointing in the +Y axis direction.
Image
Empties can display images. This can be used to create reference images, including blueprints or character sheets to model from, instead of using background images. The image is displayed regardless of the 3D display mode. The settings are the same as in Background Image Settings
Note: While alpha-images can be used, there is a known limitation with object draw order, where alphas won't always draw on top of other objects when unselected.
Size
Controls the local size of the empty. This does not change its scale, but simply resizes the shape.


The eight different empty draw types as seen from the top view

Usage and functions

Empties can serve as transform handles which cannot be edited and do not render. Empties are important and useful objects. Some examples of ways to use them include:

Parent object for a group of objects
  • An Empty can be parented to any number of other objects - This gives the user the ability to control a group of objects easily, and without affecting a render.
Target for constraints
  • An empty can also be used as a target for normal, or bone constraints.
  • This gives the user far more control; for instance, a rig can easily be set up to enable a camera to point towards an empty using the Track to constraint
Array offset
  • An empty can be used to offset an array modifier, meaning complex deformations can be achieved by only moving a single object.
An example of an empty being used to control an array
An example of an empty being used to control the track to constraint
Other common uses.
  • Placeholders
  • Rigging controls
  • DOF distances
  • Reference Images




Blender3D FreeTip.gif
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