GUI and human interfaces
Abstract
This section presents the GUI interface
and the way this interacts with the graphical environment.
Outline
the GUI, uses of pointer information, interactive operations
Goals
To allow you understand the various ways the interface and the
environment interact.
Objectives
You will be able to identify the various interfaces and interactive
tools used in creating and manipulating images.
Prerequest Background
Familiarity with pointer based computer interfaces.
Content
GUI and human interfaces
the user dialogue
- windows, icons, menues and pointing device (WIMP)
- accommodating multiple skill levels
- consistency (grayed out menu items)
- minimizing memorization (menus vs commands)
- backup and error handling
- feedback (ie pull down menus showing up)
Input of graphical data
Logical classification of input devices
- LOCATOR - a device for specifying a coordinate position (x,y)
- STROKE - a device for specifying a series of coordinate positions
- VALUATOR - a device for specifying scalar values
- CHOICE - a device for selecting menu options
- PICK - a device for selecting picture components
Input Modes
- request mode
- sample mode
- event mode
interactive picture construction
- pointer (cursor) based
- constraints (vertical/horizontal, snap-to)
- grids
- gravity field
- rubber-band
- dragging
- menus of shapes and curves (rubber stamps and curve building)
- 3D vs 2D (2D can use screen coordinates directly, 3D ...)
Posttest
Give examples from common interfaces for the various types of
uses of input values.
