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Computing - Graphics (Vectors (types of objects (Rectangle, Elipse, Line,…
Computing - Graphics
Vectors
How a vector graphic is represented
In a vector graphic, the picture is stored as a collection of mathematically determined shapes or objects. Each object in the picture has properties such as:
Fill colour
Line colour
Width
Height
Start x and y coordinates
types of objects
Rectangle
Elipse
Line
Polygon
Disadvantages
Can’t erase separate bits
Advantages
Takes up less amounts of memory as only information about the actual drawing is kept
Resolution independent
Easy to alter the size and shape of graphics
How a bitmaped graphic is represented
Represented as a grid of pixels. Each pixel uses a certain number of bits to store different colours.The more bits used to represent each pixel, the more colours that can be represented.
Advantages
Very like manual tools such as paint brushes
Use of spray type facilities
Ability to rub out areas, edit single pixels
Disadvantages
Use large amounts of memory
Resolution dependent
Can’t be resized