Blender (software)
Encyclopedia : B : BL : BLE : Blender (software)
Blender is a free program used for modelling and rendering three-dimensional graphics and animations. Blender is available for several operating systems, including FreeBSD, IRIX, GNU/Linux, Microsoft Windows, Mac OS X, Solaris, SkyOS, and MorphOS. In addition, Blender's recent burst of new features in the last few versions has actually brought it close in feature set comparison to high-end 3D software such as XSI, 3D Studio Max and Maya. Among these features and user interface ideas are, for example, Bullet rigid body dynamics, complex fluid and cloth effects, a comprehensive and well-thought out hotkey program, which rivals that of most higher end applications, and a wide range of easily accessible and creatable extensions using Python scripting.
History
Blender was developed as an in-house application by the Dutch animation studio NeoGeo (not to be confused with the Neo-Geo game console) and Not a Number Technologies (NaN); the main author, Ton Roosendaal, founded NaN in June 1998 to further develop and distribute the program. The program was initially distributed as shareware until NaN went bankrupt in 2002.The creditors agreed to release Blender as free software, under the terms of the GNU General Public License, for a one-time payment of €100,000. On July 18 2002, a Blender funding campaign was started by Roosendaal in order to collect donations and on September 7 2002 it was announced that enough funds had been collected and that the Blender source code would be released. Blender is now an open source program being actively developed by the Blender Foundation.
Features
Blender has a relatively small installation size and runs on several popular computing platforms. Though it is often distributed without documentation or extensive example scenes, the software is rich with features that are characteristic of high-end modelling software. Among its capabilities are:- Support for a variety of geometric primitives, including polygon meshes, fast subdivision surface modeling, Bezier curves, NURBS surfaces, metaballs, polygon sculpting, and vector fonts.
- Versatile internal rendering capabilities and integration with the YafRay open source ray tracer.
- Animation tools including inverse kinematics, armature (skeletal) and lattice deformation, shape keys, keyframes, timeline, non-linear animation, constraints, vertex weighting, soft body dynamics including mesh collision detection, fluid dynamics, Bullet rigid body dynamics, particle based hair, and a particle system with collision detection.
- Python scripting for tool creation and prototyping, game scripting logic, file import/export for example COLLADA and task automation.
- Basic non-linear video editing and compositing capabilities.
- Game Blender, a sub-project, offers interactivity features such as collision detection, dynamics engine, and programmable logic. It also allows the creation of stand-alone, real-time applications ranging from architectural visualization to video game construction.
Advanced features
- In Blender, an Object (which represents an entity that interacts with the world) and its Data (the actual shape/function of the object) are distinguishable. Object-data relationships are m:n (a term from Database terminology meaning many objects can share the same data) and dynamically-linkable at all times, allowing for some rapid modelling processes that are unique to blender.
- An internal filesystem that allows one to pack multiple scenes into a single file (called a ".blend" file).
- All of blender's ".blend" files are forward, backward, and cross-platform compatible with other versions of blender, and can be used as a library to borrow premade content.
- Snapshot ".blend" files can be auto-saved periodically by the program, making it easier to survive a program crash.
- All scenes, objects, materials, textures, sounds, images, post-production effects for an entire animation can be stored in a single ".blend" file.
- Interface configurations are retained in the ".blend" files, such that what you save is what you get upon load. This file can be stored as "user defaults" so this screen configuration, as well as all the objects stored in it, is used every time you load blender.
User interface
Blender has had a reputation as a program that is difficult to learn. Nearly every function has a direct keyboard shortcut, with the amount of functions Blender offers resulting in several different shortcuts per key. Since the open-sourcing, there has been effort to add comprehensive contextual menus as well as make the tool use more logical and streamlined, and also visually enhance the user interface further, with the introduction of color themes, transparent floating widgets, a new and improved object tree overview and other small improvements (color picker widget, etc.).Blender's user interface has the following distinguishing concepts:
- Editing modes. The two primary modes of work are Object mode and Edit mode, which are toggled with the Tab key. Object mode is used to manipulate individual objects in general, while Edit mode is used to manipulate the actual object data. For example, for polygon meshes, Object mode can be used to move, scale, and rotate entire meshes, and Edit mode is used to manipulate the individual vertices of a single mesh. There are also several other modes, such as Vertex Paint and UV Editing modes.
- Very heavy use of keyboard hotkeys. Most of the commands are given from keyboard. Until the 2.x and especially the 2.3x versions, this was in fact the only way to give commands, and this was largely responsible for creating Blender's reputation as a difficult-to-learn program. The new versions have more comprehensive GUI menus.
- Workspace management. The Blender GUI is made up of one or more screens, each of which can be divided into sections and subsections that can be of any type of Blender's views or window-types. Each window-type's own GUI elements can be controlled with the same tools that manipulate 3D view - for example, resulting in the strange feature of being able to zoom in and out of GUI-buttons in the same way one zooms in and out in the 3D viewport. The GUI's layout and setup is fully controllable by the users, making it possible to set up the interface for specific tasks such as video editing or UV mapping and texturing and hiding other features that aren't needed for that specific task. This is very akin is the GUI style used by the Unreal Tournament map editing software, UnrealEd.
Development
Since the opening of the source, Blender has improved and experienced substantial refactoring of the initial codebase. This made the addition of features easier. Although Blender is a full featured program, professional users of other programs may find certain areas to be missing, such as the lack of NGon based modeling workflow and some missing or incomplete modeling tools, numerical measuring and manipulation methods, the inability to customize keybindings, limited compatibility with other 3D file formats, lack of a robust cloth dynamics system (currently under development) and bundled libraries of material presets. Blender also tends to lack up-to-date and complete documentation although that has been largely solved by the wikification of the blender documentation project and the recently announced Blender Summer of Documentation [link].Blender 2.40 features
Blender 2.40 adds many new features [link], including:- An animation system refresh [link].
- A mesh "modifier stack" [link].
- Improvements to the User Interface. [link].
- New particle options (including hair) and guides. [link]
Blender 2.41 features
Blender 2.41 added a number of improvements [link]. especially to the Game Engine, including:- GLSL pixel and vertex shaders for the game engine [link],
- Subsurf UV Unwrapping [link],
- and a sculpting tool [link]
Blender 2.42 features
Blender 2.42 adds many new and updated feature. It was released July 14 2006. The release notes can be found [here]. This release adds a greater amount of new features than an average release. This is due in large part to the development of the short film Elephants Dream [link]. (See #Elephants Dream.) A list of improvements and new features includes:- Fully recoded Render Pipeline
- *New 3D render preview
- *Improved material shading preview
- *Preview Icons
- *Fully threaded tile based rendering
- *Improved panorama render
- *Render layers and multipass rendering
- *Vector Blur
- *Changes to the render output display
- *Fixed memory issues
- Generic Node editing system
- *New Nodes UI
- *Material (Shading) Nodes
- *Composite Nodes
- *Curves UI Control
- Material Features
- *Transmissivity
- *Tangent Shading
- *Stress Mapping
- *New blending Modes
- *Improved shadow options
- New and improved object tools
- *New Mesh tools
- **Upgraded Merge
- **Loop and path select
- **Improved extruded region on mirror modifier
- *Object Groups
- *Array modifier
- *Improved UV unwrapping
- **Angle based flattening
- **Seam cutting tools
- **Minimization of unwrapp stretching
- New character animation tools
- *Custom Bones
- *Bone Layers
- *Stride mixing in NLA
- Game engine and physics improvements
- *COLLADA 1.4 import/export
- *Bullet Rigid Body Physics is now default
- Improved fluid simulation
- *Support for moving obstacles
- *Vector bluring
- *Improved smoothing
- *Particles support for fluids
- Improved video sequence editor
- Improved high dynamic range graphics support
- Improved Python scripting
- *New python scripts
- *Expressions evaluation in numerical values
- *Python IPO drivers
- Library linking
- And more new features and fixes
Support
The popularity of Blender has reached approximately 250,000 users using Blender worldwide, and support is widely available. Most users learn Blender through tutorials that various users have written; others learn Blender through many discussion forums on the topic. A popular forum for Blender discussion is Blender Artists, previously known as elYsiun (http://www.blenderartists.org/forum/).Artists using Blender
Notable artists using Blender as their main or only tool are- [Andreas Goralczyk (@ndy)], winner of two subsequent Suzanne Blender Awards (2003 - Best Animation, 2004 - Best Still)
- [Stefano Selleri (S68)] (Suzanne Blender Awards 2003 - Best Still)
- Bassam Kurdali (slikdigit) (Suzanne Blender Awards 2004 - Best Animation)
- [Bastian Salmela (basse)]
- [Endre Barath (endi)]
- [Jean-Sébastien Guillemette (Ecks, formerly X-WARRIOR)]
- [Robert Tiess (RobertT)]
- [Enrico Valenza (Env)] (Suzanne Blender Awards 2005 - Best Animation)
Usage in the movie industry
The first large professional project in which Blender was used was Spider-Man 2, where it was primarily used to create animatics and previsualizations for the storyboard department.
- "As an animatic artist working in the storyboard department of Spider-Man 2, I used Blender's 3d modeling and character animation tools to enhance the storyboards, re-creating sets and props, and putting into motion action and camera moves in 3d space to help make Sam's vision as clear to other departments as possible." [link] - [Anthony Zierhut], Animatic Artist, Los Angeles
Elephants Dream
In September 2005, some of the most notable Blender artists and developers began working on a short film using primarily free software, in an initiative known as the Orange Movie Project. The resulting film, Elephants Dream, premiered on March 24, 2006.
External links
- redirect
- [Official Blender Site]
- [Blender Wiki]
- [Blender Artists - Official Blender User Support Forum]
- [BlenderNation - Fresh Blender News, Every Day]
- [Links to Blender Sites from the Official Blender Site]
- [Blender Development Wiki]
- [GraphicAll.org - Blender Test Builds]
- [Video Tutorials for Modem Users]
- [Greybeard's Video Tutorials Site]
- [Blender plugin repository]
- [BlenderWars - Large Number of Sci-Fi Blender models/galleries/forums]
- [Blender Art Gallery]
- [Blender Battles - Speed modelling contests]
- [Blender Projects - OPEN Movie Project Community]
- [ResPower Super/Farm Blender Render Farm]
- [Elsner Pictures - An independent film studio using blender]
- [The Blender Clan - French Users Site]
- [www.katorlegaz.com - a collection of models]
- [Render Planet - Commercial render service]
- [Review: A fortnight with Blender.]
- [open source CG]
- [Open Content University Course in modelling, animation and rendering using Blender]
- [Bullet Physics Engine using for Rigid Body dynamics in Blender.]
- [freshmeat project page]
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