Lecture Computer graphics: Lecture 12 - Fasih ur Rehman

After you read this chapter you should be able to: Describe various types of network attacks, and identify ways to safeguard against these attacks, including firewalls and intrusion detection software; discuss techniques to prevent unauthorized computer access and use; identify safeguards against hardware theft and vandalism;...

Computer Graphics

Lecture 12 Fasih ur Rehman

Last Class

• Geometric Objects

– Line

Today’s Agenda

• Cross Product

• Plane

• Sphere

• Transformations

Cross Product

• The product of two vectors (a and b) is

another vector which is orthogonal to both the vectors (a and b)

Vector Product of the two vectors

product.

3D Plane

• Linear combination of three points

3D Sphere

Transformations

Matrix Algebra (A Review)

• Scaling is achieved by multiplying each graphic component by a scalar

• Scaling will be uniform if this scalar is same for all components

• Different components are scaled

differently, scaling in uniform

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Scaling Operation

2D Rotation

• Cross Product

• Fundamentals of Computer Graphics Third Edition by Peter Shirley and Steve

Marschner

• Interactive Computer Graphics, A

Top-down Approach with OpenGL (Sixth

Edition) by Edward Angel