The Computer Revolution/Computer Graphics/3D
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Graphics shown on the computer screen in 3-dimensional space, for example, location of points, lines, and, typically, faces. Makes the graphic more clear and more close to the real live.
[edit] Modeling of 3D graphics
With the help of digital computers and special 3D software, graphic works of art can be created called 3D computer graphics. To perform calculations and render 2D images. a three-dimensional representation of geometric data is stored in the computer.
The art of 3D modeling is somewhat like sculpting or photography, as it prepares geometric data for 3D computer graphics.
There are three phases to creating 3D graphics:
- Content creation (this includes 3d modeling, texturing, and animation)
- Scene layout set-up
- Rendering
In the modeling stage, individual objects are shaped and later used in a scene. The modeling process could also include adjusting object surface or material properties (such as luminosity, shading components, reflection characteristics, transparency, etc), adding textures, bump-maps and other features.
Modeling could also include numerous activities related to preparing a 3D model for animation. In this process, objects might be fitted with a central framework that has the capability of affecting its' shape or movements.
Dedicated programs can perform the modeling process (e.g. Rhinoceros 3D). Modeling can also be performed by an application component (e.g. Shaper) or some scene description language (e.g. Povray).
http://en.wikipedia.org/wiki/3D_computer_graphics
[edit] Scene Layout Setup
Virtual objects as well as cameras and lighting are used to create a scene layout setup for 3D computer graphics. This enables you to make a still image or an animation.
3D Animation is exactly that – animated objects that appear in a three-dimensional space. You can rotate them or move them like real objects. You will see a lot of 3D animation in things like games and virtual reality but they can also be used in graphics for designing nice presentations.
Keyframe animation determines a path or direction for the animation to proceed.
We all know how important lighting is to photographers and stage sets. Lighting is also very important to the effectiveness of 3D computer graphics. The easiest type of light to simulate is “ambient” light. It produces a constant illumination on all surfaces of a 3D object, regardless of their orientation. There is also directional and positional light to be considered when creating 3D graphics.
Color is also very important when creating 3D graphics. Red, green and blue lights are the primary colors. Other colors are produced by combining these colors together.
