Page 24 - Computer Graphics

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Active & Passive graphics

Interactive computer graphics

The graphics which include animation are known as interactive computer
graphics. We often visit websites that include animation of pictures or buttons.
When we hover over any button or image then its shape is changed i.e. it is
interactive in nature by which users can feel interaction. Similarly, there are

numerous other graphics which shows the animation when we perform any action
on it e.g. on scrolling browser window the image change its size or location.

Example of interactive computer graphics

 Animation of button or graphics on mouse hover
 Animation of the picture or graphic objects on the scroll of the window or

mobile screen
 Drawing on touch screens
 Display of weather forecast or any other moving charts/graphs on the
screen

 Animating pictures or graphics in movies
 Graphics animation in video games

Passive computer graphics

The graphics which not change its shape on display are known as passive
computer graphics. The images or graphics objects are used in all the computer
application e.g. in word documents, ebooks, websites, presentations, emails etc.

Passive computer graphics gives details to the texts and it makes our reading more
interesting. Also, note that some graphics make the websites slow to load due to
the high quality of the image. To solve the problem of the large size of the image,

we use jpg on websites. Another technique is that you can make different versions
of images by decreasing its quality. So for tablet and mobile devices, low-quality
images are displayed on the website and for a large screen, high quality of images
are used. This makes the website load more quickly.

Example of passive computer graphics

 Data representation through charts

 Graphics elements used in the presentation, emails, word documents, and
pdf
 Static images used in websites and mobile apps

 Graphics used in business e.g. graphic used in brochure, business cards,
hotel menus