Vector images

Vector Images 

Vector graphics are made up of vectors (Paths or strokes) they use points, curves, lines and shapes or polygons based on mathematical expression in order to represent images in computer based graphics. Although not as commonly used as bitmap graphics, vector graphics have a lot of strong points, let's explore through them now!

Points - Points are locations within a 3D space, they also have no size. The location of a point is specified by its X, Y, and Z coordinates  

Lines and curves -  The most simple breakdown of vector graphics is to describe them as a series of "lines and curves" connected by points which, when viewed as a whole look like a specific shape (a logo, a character of text, an illustration, etc.).

Now I will demonstrate how to actually carry out the creation of lines and curves in a certain programme such as Flash:

1. Click on line tool.






2. Open the info dialog box.

3. Click the stroke tab.

4. Choose a style and adjust the thickness of the stroke.

Book reference: Flash 5 Made Simple, Mike McGrath

Polygons - Polygons are also a vector graphic upon creation. In geometry a polygon is a plane figure that is bounded by a closed path or circuit, composed of a finite sequence of straight line segments. These segments are called its edges or sides, and the points where two edges meet are the polygon's vertices or corners. In computer graphics, the term polygon has taken on a slightly altered meaning, more related to the way the shape is stored and manipulated within the computer.

File extensions:

EPS - EPS is a file extension for a graphics file format used in vector-based images in Adobe Illustrator. EPS stands for Encapsulated PostScript. An EPS file can contain text as well as graphics. It also usually contains a bit map version of the image for simpler viewing rather than the vector instructions to draw the image.

AI - Adobe illustrator is a vector graphics based file format developed by Adobe Systems, files that have the AI extension are drawing files that Adobe illustrator has created. As mentioned the files created by the program are made up of paths that are connected by points, this creates the vector image. The image can then be re sized without losing any image quality. 

FLA - The FLA file format is the "master" document format for Flash projects. When you create a new Flash file, you create an FLA file. This contains all the elements which make up the finished product, including graphics, animation instructions, action script code, comments, etc. FLA files can only be opened in Flash (not the Flash Player).