15 Questions
What is the main purpose of 3D computer graphics?
To use a three-dimensional representation of geometric data to perform calculations and render digital images
How are 3D computer graphics typically displayed?
On 2D displays with visual depth and effects to give the appearance of 3D objects
What is a 3-D model in the context of computer graphics?
A mathematical representation of any three-dimensional object
How does 3D graphics relate to 2D graphics?
3D graphics uses some aspects of 2D graphics to help render objects and techniques
What element of 3D graphics creates a physical representation of objects?
3D printing
What is the main purpose of 3-D computer graphics?
To store geometric data in the computer for calculations and rendering digital images
What is the role of 3-D models in computer graphics?
To provide a mathematical representation of any three-dimensional object
What is the relationship between 3D and 2D graphics?
3D graphics rely on many of the same algorithms as 2-D computer vector graphics
What element of 3D graphics creates a physical representation of objects?
3D printing
What was introduced by Ivan Sutherland in 1960 as the first graphic design interface?
Sketchpad
What is the main purpose of 3D shearing in computer graphics?
To change the shape of an existing object in a three-dimensional plane
What does a 3D shearing transformation matrix do with respect to an axis?
Keeps the value corresponding to that axis coordinate unchanged
In which type of projections is 3D shearing particularly useful?
Perspective projections
How does 3D shearing relate to 2D shearing?
The transformation matrices for both are similar, with the addition of a row and a column for the z-coordinate in 3D shearing
Which type of projection can benefit from using 3D shearing to draw objects on a screen?
Perspective projection
Study Notes
Introduction to 3D Computer Graphics
- The main purpose of 3D computer graphics is to create a virtual representation of 3D objects and scenes.
- 3D computer graphics are typically displayed on a 2D screen using various projection techniques.
3D Models
- A 3-D model in the context of computer graphics is a virtual representation of a 3D object or scene.
- The role of 3-D models in computer graphics is to create a digital representation of real-world objects or scenes.
Relationship between 3D and 2D Graphics
- 3D graphics relates to 2D graphics as a 3D object can be projected onto a 2D plane using various projection techniques.
- 2D graphics can be thought of as a simplified version of 3D graphics with reduced dimensions.
3D Graphics Elements
- The element of 3D graphics that creates a physical representation of objects is 3D modeling.
- 3D modeling involves creating a virtual representation of real-world objects or scenes using digital tools.
History of Computer Graphics
- Ivan Sutherland introduced the first graphic design interface in 1960, which revolutionized the field of computer graphics.
3D Shearing
- The main purpose of 3D shearing in computer graphics is to transform 3D objects by applying a shearing transformation.
- A 3D shearing transformation matrix is used to perform shearing transformations with respect to an axis.
- 3D shearing is particularly useful in parallel and perspective projections.
- 3D shearing is an extension of 2D shearing, where objects are transformed in 3D space.
- Parallel and perspective projections can benefit from using 3D shearing to draw objects on a screen.
Test your knowledge of 3D computer graphics, also known as CGI, and its use in creating visual effects and digital images. Explore the concepts of geometric data representation, rendering, and visual depth in CGI.
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