1.
Bitmap:
Method by which a display space (such as a graphics image file) is defined, including the colour
of each of its pixels (or bits) is called bitmap
2.Properties of circle:
Circle is an eight-way symmetric figure. The shape of circle is the same in all quadrants. In each
quadrant, there are two octants.
3.Refersh CRT:
Cathode is heated to produce electrons as a cloud . When the electron is injected through the electron
gun , it passes through the control grid .
4.Resolution:
Resolution to a CG refers to the level of detail that will be used to represent something in a 3D file.
5. Types of clipping:
•Point Clipping.• Line Clipping.• Polygon Clipping • Curve Clipping.• Text Clipping. •Exterior Clipping.
6. DDA:
A digital differential analyzer (DDA) is hardware or software used for interpolation of variables over an
interval between start and end point.
7. Shearing:
Shearing is an ideal technique to change the shape of an existing object in a two dimensional plane.
8. Constraints:
A constraint is a rule for altering input coordinates values to produce a specified orientation or
alignment of the displayed coordinates.
9. Expand:
PHIGS- Programmer's Hierarchical Interactive System
GKS- Graphical Kernel System
10. Viewport:
A viewport is a polygon viewing region in computer graphics. In computer graphics theory, there are two
region-like notions of relevance when rendering some objects to an image.
