Representation of Vector Graphics
- 2. Vector Graphics Vector graphics store an image using geometrical objects like points, curves and polygons. Each object is saved as a set of attributes - a description of how it is to be drawn. image_no, shape_type, startx, starty, length, height, line, fill or 1, rectangle, 20, 30, 400, 80, 3, 26
- 3. Vector Graphics Vector graphics store an image using geometrical objects like points, curves and polygons. Each object is saved as a set of attributes - a description of how it is to be drawn. Image_no, shape, centrex, centrey, radius, line, fill or 2, oval, 250, 520, 80, 6, 92
- 4. Vector Graphics The computer changes the information in the set of attributes if... ...an object is moved to a new position on the screen.
- 5. Vector Graphics The computer changes the information in the set of attributes if... ...an object is resized .
- 6. Vector Graphics The computer changes the information in the set of attributes if... ...the fill pattern of the object is changed.
- 7. Vector Graphics The computer changes the information in the set of attributes if... ...the line thickness of the object is changed.
- 8. Vector Graphics change the colour of part of the object delete part of the object It is not possible to:
- 9. Advantages of Vector Graphics Small file size Actual objects are created which can be moved and re-sized The file is resolution independent. If it is sent to a printer which has a higher resolution then it is printed at that higher resolution 300 dpi 600 dpi
- 10. Disadvantages of Vector Graphics The file size increases rapidly as more shapes are added to the graphic Cannot edit part of an object
- 11. Credits Higher Computing – Data Representation – Vector Graphics Produced by P. Greene and adapted by R. G. Simpson for the City of Edinburgh Council 2004 Adapted by M. Cunningham 2010 All images licenced under Creative Commons 3.0 flikr1609 by flikr / Kelbv (flickr) flikr2001 by flikr / Kelbv (flickr)