Lecture Computer graphics: Lecture 28 - Fasih ur Rehman

After you read this chapter you should be able to: Discuss the importance of project management, feasibility assessment, documentation, and data and information gathering techniques; discuss the purpose of each system development phase; differentiate between lowlevel languages and procedural languages;...

Computer Graphics

Lecture 28 Fasih ur Rehman

Last Class

• GUI

• Attributes

graphics

• Advantages

• Design Process and flow

Today’s Agenda

• Graphical User Interfaces

Design Principles

• Experience and capabilities and needs of the system users must be taken into

account during design process of UI

• Designers should be aware of people’s

physical and mental limitations and should

be convinced that people make mistakes

Design Principles

• User familiarity

drawn from the experience of the users

• Consistency

• Minimal surprise

• Recoverability

• User guidance

• User diversity

use

User System Interactions

• Two issues need to be addressed

the system

computer) be presented to the user?

• User System Interactions

User System Interaction

Styles

Direct Manipulations

• Advantages

• Disadvantages

for tasks and objects

• Video games and CAD Systems

Menu Selection

• Advantages

• Disadvantages

• General purpose software

Form fill-in

• Advantages

• Disadvantages

• Financial Applications (banks stocks)

Command Language

• Advantages

• Disadvantages

• Operating systems

Natural Language

• Advantages

• Disadvantages

unreliable

• Time tables etc.

• User System Interactions

• 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.