Computer Graphics (Elective-I)

Unit I

Introduction and Line Generation: Types of Computer Graphics, Graphic Displays — Random Scan Displays, Raster Scan Displays, Frame Buffer and Video Controller, Points and Lines, Line Drawing Algorithms, Circle Generating Algorithms, Mid-Point Circle Generating Algorithm and Parallel Versions of These Algorithms.

Unit II

Transformations, Windowing and Clipping: Basic Transformation, Matrix Representations and Homogeneous Coordinates, Composite Transformations, Reflections and Shearing. Viewing Pipeline, Viewing Transformations, 2-D Clipping Algorithms — Cohen-Sutherland Line Clipping, Liang-Barsky Algorithm, Line Clipping Against Non-Rectangular Clip Windows, Polygon Clipping — Sutherland-Hodgeman, Weiler-Atherton, Curve Clipping, Text Clipping.

Unit III

Three Dimensional: 3-D Geometric Primitives, 3-D Object Representation, 3-D Transformation, 3-D Viewing, Projections, 3-D Clipping.

Unit IV

Curves and Surfaces: Quadric Surfaces, Spheres, Ellipsoid, Blobby Objects, Introductory Concepts of Spline, B-Spline and Bezier Curves and Surfaces.

Unit V

Hidden Lines and Surfaces: Back Face Detection Algorithm, Depth Buffer Method, A-Buffer Method, Scan Line Method, Basic Illumination Models — Ambient Light, Diffuse Reflection, Specular Reflection and Phong Model, Combined Approach, Warn Model, Intensity Attenuation, Color Consideration, Transparency and Shadows.