Unit IV: Graphics Dimensions – Computer Graphics and Multimedia Technology

The purpose of using computers for drawing is to provide the facility for the user to view the object from different angles, enlarging or reducing the scale or shape of the object called Transformation.

In this “Graphics Dimensions – Computer Graphics and Multimedia Technology” you will learn about the following topics:

2D Geometric Transformations
Types of 2D Transformations
Translation, Rotation, Scaling, Reflection, Shearing
Composite Transformation
Example Showing Composite Transformations
Advantage of Composition or Concatenation of Matrix
Composition of Two Translations
Composition of Two Rotations
Composition of Two Scaling
Homogeneous Coordinates System
Two Dimensional Object to Screen Viewing
Computer Graphics Window
Viewport
Viewing Transformation or Window to Viewport Transformation or Windowing Transformation
Viewing Transformation in Several Steps
Computer Graphics Window to Viewport Co-ordinate Transformation
Clipping
Applications of Clipping
Types of Clipping
Point Clipping, Line Clipping, Text Clipping, Curve Clipping, Exterior Clipping, Polygon Clipping
Cohen Sutherland Line Clipping Algorithm
Advantage of Cohen Sutherland Line Clipping
Algorithm of Cohen Sutherland Line Clipping
Example of Cohen-Sutherland Line Clipping Algorithm
Sutherland-Hodgeman Polygon Clipping
3D Object to Screen Viewing
3D (Three Dimensional) Transformations
Translation, Rotation, Scaling
Extension of Two Dimensional Display Methods
Projection
Types of Projection
Parallel Projection (Orthographic Projection, Oblique Projection)
Perspective Projection

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