Computer+Graphics

­­­­­­­­­­­ · Graphics means_____________________________________________________________­­­. In conventional method we use pencils, sketch pens, crayons, brushes and ink to draw pictures, graphs and charts.
 * COMPUTER GRAPHICS.**

One simple way of drawing pictures is by **__joining dots__**. It is easy for us to draw such shapes for example square, rectangle on **__graph paper__**. We follow a sequence in joining the dots to get a particular shape or picture.

All images can be classified as graphics. There are many types of graphics.

For example, the photograph of birthday cake in figure 1.1 (a) is an example of a **high-resolution graphics.** A high-resolution graphic has many, many dots called _____________, which make the picture look sharp. A high-resolution graphics also have a wide colour depth means that the graphics have many colours. A high-resolution graphics __needs a lot of storage space__.


 * Low-resolution graphics**, such as fig 1.1 (b) do not have a wide range of colours. These graphics typically used to illustrate general concepts or give a simple representation of object. Low-resolution graphics needs little storage space.

· Computer Graphics means ____________________________________________________. Computers also help engineers, architects and draftsmen for designing houses, roads, rockets, airplanes, offshore platforms and many other devices that we use everyday with the aid of **computer graphics.**

The main **__advantages__** of using computer for designing are: i. we can modify any part of the design as required without redrawing the entire design. ii. it is quicker and easier to create designs using computers than to manually create them.

· **Common graphic programs**

Creating a good piece of graphic needs skills. Computers make designing graphics so simple that the person with little training in graphic design can produce a decent piece of work.

Some common programs that can create graphics are CorelDraw, Adobe Illustrator, Macromedia Freehand and Ms Paint.

· **Features of graphics programs**.

Feature || Description || The toolbox || This contains drawing tools, represented by icons, that you use to create objects, e.g. square, rectangles, circles, ovals, polygons, curves and spirals. || Colour palette || This contains a range of colour that can be used in your graphic. || Graphics area || This is the area where you draw objects. || Standard toolbar || These provide shortcuts to commonly-used functions. Eg. Saving a file and printing a file. || Properties toolbar || These also have commonly-used functions. Eg. Setting paper size such as letter, A4 and A3; and page orientation. ||

· **Some Uses of Computer Graphics**

Computer graphics are used in computer games. They make the display attractive and the games interesting. Simulation games enhance the realism of the game-playing experience.
 * 1) **In computer Games**

Computer graphics are used in the film “Finding Nemo”. They are also used to produce movement or special effects in some live-action film like :Jurassic Park” and “King Kong”.
 * 1) **In films and Television Programmes**

Computer graphics are used widely on posters, in books and magazines.
 * 1) **In print Media**

Beautiful artworks can create using oil, paint, mud and other materials. This can be done on the computer screen.
 * 1) **For Art**