Graphic+Software

__**Graphics Software**__

Picture, drawing and images can be produced by a computer and they are called graphics. There are 4 types of graphics packages, they are painting, drawing, photo editing and CAD.

A painting packages allows freehand drawing and colouring, and it is usual done with a mouse. Generally the features are: - A palette from which user can choose colours - Freehand pens and brushes offering different styles and line thickness - A range of standard shape tools such as rectangles and circles - Colour full tools - cut, copy and paste - Zoom (to work in finer detail)
 * __Painting packages__**

Bitmap Graphics Bitmap graphic made with painting packages consist of many tiny dots called pixels. Since the computer has to store information about every single pixel in the image, the file size of a bitmap graphic is often quite large. Bitmap graphics lose quality when they're resized.

Image made by drawing packages consist lines, shapes and co-ordinates. It usually offers many similar feature to painting __**Vector Graphics**__ Vector graphics are based on mathematical relationship with control points that make up the image, information is not stored about each pixel. Points are connected by lines and curves called vector paths or vectors.
 * __Drawing Packages__**

A vector object is a shape made up of vector paths. you could edit each object separately, for example, you could change the shape, stroke, fill, size and position. A stroke follows the outline of the vector path and a fill adds a colour to the area inside the path.

__Advantages__ Smaller file size- vector graphics are smaller because they do no store data on individual pixels. Scalable- when you resize a vector graphic the mathematical relationship means that the image does not lose quality. A vector graphic the size of postage stamp could be resized to be used on a poster and the image would be still clear.

__Disadvantage__ Vector graphics are never going to be as life like as a bitmap or photos. They will always appear computer generated.

**__Photo editing__** Photo editing software allows the user to edit and adjust photographs. The photos usually come from a digital camera, but they could be scanned from photo that are already existing. Digital photos are bitmaps. The main photo editing software are //" Adobe Photoshop, Corel Paint Shop Pro, GIMP and Paint.NET"//

__Features__ Adjust contrast and brightness Remove red-eye
 * Crop**- cut off sides of an image to make it a suitable size or remove unwanted areas
 * Layer-**you can have several different elements of the graphic as separate layers. These layers can be made invisible or even deleted at any time
 * Clone tool** – this tool allows the user to clone one part of the picture to another to remove an unwanted element.
 * Special effects** – the effects vary from one piece of software to another but usually include:
 * Artistic effects** - for example, making a picture look like an oil painting.
 * Geometric effects** - for example, making an image appear to be on the surface of a ball.
 * Colour adjustments** - for example, turning a photo into greyscale or brightening certain colours.

CAD packages are more high end drawing packages. They are used by engineers, architects and designers to produce detailed design plans and technical drawings.
 * __Computer Aided Design (CAD)__**
 * greater accuracy (it is possible to work to within 1/72 of an inch)
 * objects and drawings can be created in 2D, 3D, 2D CAD and 3D CAD
 * images can be viewed from any angle
 * powerful scaling, rotation and reflection options
 * libraries of engineering components which can be imported
 * links to packages to calculate costs