Scct2013 topic5-introto applicationdevelopment

INTRODUCTION TO APPLICATION
DEVELOPMENT

OVERVIEW

 Intro to Application Development

 Types of Application

 Authoring System

 Authoring Process

 Programming Languages

2

APPLICATION DEVELOPMENT
 Application development is a complex and dynamic
process:
 To develop an application, a few factors need to be
considered
 Presentation of the application/project/system
 Interactive
 Non-interactive
 Platform – desktop, mobile device, web
 Stand-alone
 Distributed These factors will
determine the
 Internet
suitable/appropriate
 Intranet application development
3
 ? methods

APPLICATION DEVELOPMENT
 Types of application
 education,
 entertainment,

 E-commerce

 Etc..

4

APPLICATION DEVELOPMENT - METHODS
Authoring Programming

 Applications specially  Languages specify how
designed to integrate the media is presented
and present media and user interactions
elements. carried out.
 Developers can  Requires command of
concentrate on the language.
design, interactivity, an  Is time consuming.
d functionality of the
project
5

AUTHORING SYSTEM
 Is software designed for creation of multimedia
projects.
 Is a program which has pre-programmed elements
for the development of interactive multimedia
software titles

 Applications are used to:
 Assemble media elements
 Synchronize content
 Design user interface
 Provide user interactivity
7

AUTHORING METAPHORS
 Authoring applications are grouped around three
metaphors:
Scissor - A metaphor to represent „cut‟
 Card – page based
 Icon – event driven
 Timeline

 A metaphor is a comparison of
one thing to another to enhance Is there any
understanding other metaphor

 Metaphors help orient developer
to how the software organizes the
media, sequences events, and
presents final project. 8

CARD METAPHOR
 Media is organized in sequential order on a stack of
cards or slides or pages.
 Appropriate for static media that is normally
experienced in sequence.
 Cards have two layers:
 Background layer contains shared elements.
 Foreground layer contains content specific to that card
or slide.

9

CARD METAPHOR
 Benefits of card layers.
 Background content is created once, which saves
development time.
 Common background layer provides consistent design.
 File sizes are minimized by sharing background
elements.
Oh.. Just like the
use of
PowerPoint, Hyper
Card, and
ToolBook?

10

ICON METAPHOR
 Icons define media and forms of interactivity.
 Icons are placed on a flowline to create the
application structure.
 Each icon has a dialog box with properties and
parameters identified by the developer.
 Flowlines let developers visualize and adjust the
structure of the application.
 Branching routines add controls for user interaction

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ICON METAPHOR
 Flowline is a graphical representation of the
relationships between components of the
application.
Multimedia elements
and interaction cues are
organized as objects in
a flowchart

Authorware,
IconAuthor?

12

TIMELINE METAPHOR
 Organizes media and interactivity as sequence of
frames.
 Each frame can have multiple layers.
 Layers define the stacking order of the content to be
displayed.
 Appropriate for dynamic media as the media can by
synchronized precisely over time.

13

TIMELINE METAPHOR
 Popular timeline-based applications include
Director and Flash.
 Best used when animation or video
is central to the application.

14

AUTHORING PROCESS
15 A series of interrelated tasks from project design to
delivery

AUTHORING PROCESS
 Involves a series of interrelated tasks from project
design to delivery
 General process include the following activities

Depending on types of
Application Design Programming Database Support application/project, some
of these activities are not
required.
Establishing
Importing Content Preview, Test, Debug
Navigation

Integration, Synchroni
Create & Edit Content Project Delivery
zation, and Playback

16

AUTHORING PROCESS

Depending on types of
Application Design Programming Database Support
application/project, some
of these activities are not
required.
Importing Content Establishing Navigation Preview, Test, Debug

Ok.. So, in
producing paper-
Create & Edit Content
Integration, Synchronization, and
Playback
Project Delivery based
pamphlet, we
don‟t need 3
activities…

17

APPLICATIONS DESIGN
 Authoring software supports the design process.
 Outline view in PowerPoint structures presentation.
 Storyboard development is common in complex
applications.
 Storyboard is a series of screen sketches to guide
development process.

18

IMPORTING CONTENT
 Media is generally created in media-specific
applications and imported into the authoring
environment.
 File formats for imported media are important.
 Conversion utilities within the application are useful.

19

CREATE AND EDIT CONTENT
 All authoring applications include some tools for
creating and editing media content. For example:
 Text adjustments to font size and color.
 Paint tools to add shapes and edit image features.
 Sound adjustment on volume, duration.
 Animation changes to speed and direction.

20

INTEGRATION, SYNCHRONIZATION, AND
PLAYBACK
 Techniques for integration are based on the metaphor
(card, icon, timeline).
 Sounds, animations and transitions must be
synchronized to present a unified flow of information.
 Playback of the content is often dependent on
hardware factors. Timing controls can be established
to ensure correct playback.

21

ESTABLISHING NAVIGATION
 Authoring software can establish the order of the
content on playback.
 Basic navigation structures include:
 Linear or sequential
 Hierarchical
 Networked
 Conditional.

22

PROGRAMMING
 Provides more flexibility and control.
 For projects with extensive interactivity, custom features.
 Two programming methods.
 Script: series of commands specifying properties or
behavior of an element in the project.
 Commands are interpreted as the project is executed.
 Support authoring, e.g use of Lingo script in Director

 Icon: dialog boxes allow the developer to specify
parameters for icon's use.
 Does not require programming knowledge but does limit
commands to icon parameters.
23

DATABASE SUPPORT
 Some projects may require access to a collection of
related files to store and retrieve user input.
 Tutorials have databases of related facts to test
comprehension.
 User stores answers for future reference and scoring.
 Authorware and Director applications offer an
interface to a database.

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PREVIEW, TEST, DEBUG
 Projects are created in the development mode.
 Necessary to preview the project as it will appear in the
final product and test the components of the screen
displays.
 Authoring applications often have a preview mode to test
the assembled project during development.
 Debugger tools can identify errors in program code.

25

PROJECT DELIVERY
 Projects are published so they play outside the
authoring environment.
 Two approaches to publishing.
 Project requires a separate player program to present the
multimedia content.
 QuickTime, Flash, and MediaPlayer programs are free player
downloads.
 Project embeds the player in the multimedia project.
 Larger files, but project is a stand-alone application.
 often used on CD or DVD distribution since there is adequate

storage to contain the player file and the developer is assured the
proper program is available for playback.

Web multimedia projects rely on a Player program on the client computer. 26
This reduces file size for speedier download times. Client, however, may
need to download the latest update of the player software on their computer.

CHOOSING AN AUTHORING APPLICATION
 No single authoring tool is suitable for all projects.
To select the right application:
 Consider the subject (static or dynamic media).
 Consider the media (source file formats compatible).
 Consider delivery (where used, means of distribution).
 Consider maintenance (expertise needed to revise
content, frequent update cycles).

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PROGRAMMING LANGUAGES
 “A vocabulary and set of grammatical rules for
instructing a computer to perform specific task”
 “A computer language programmers use to develop
applications, scripts, or other set of instructions for a
computer to execute.”1

Programming Language
usually refers to the high-
level language

29

1) http://www.computerhope.com/jargon/p/proglang.htm

PROGRAMMING LANGUAGES
 Each language has a unique set
of keywords (words that it
understands) and a special
syntax for organizing program
instructions.
 Every language has its strengths
and weaknesses
 The choice of which language to
use depends on:
 the type of computer the program
is to run on,
 what sort of program it is,
 the expertise of the programmer. 30

ADDITIONAL READINGS

 http://www.giac.org/cissp-papers/97.pdf
 http://www.egyankosh.ac.in/bitstream/123456789/34036/1/
Unit-3.pdf

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Scct2013 topic5-introto applicationdevelopment

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Scct2013 topic5-introto applicationdevelopment