Computer Graphics

Computer graphics is one of the most important applications of computers. Computer graphics are used in very diverse areas such as displaying results of engineering and scientific computations, producing TV commercials etc. This chapter

Line drawing is accomplished by calculating intermediate point coordinates along the line path between two given end points since screen pixels are referred with integer values, plotted positions may only approximate the calculated coordinates. In this chapter, standard algorithms are discussed to determine which pixels provide the best approximation to the desired line.

A surface which is a closed one and bounded by a straight line segments is known as polygon. This chapter discusses the various types of polygons and the differences in their aspects in detail.

The purpose of a graphics system is to make programming easier for the user. Powerful functions such as higher level languages have made the graphics system more effective. This chapter elaborates on some of the primitive graphics functions such as line moving pen, drawing a line, writing a character etc.

It is essential for a graphics system to allow the user to change the way the objects appear. The implementation of such a change is called transformation. Transformation is classified broadly based on the objects that are transformed. Namely, a) Two dimensional transformation and b) Three dimensional transformation. This chapter discusses two dimensional transformations in detail.

The method of selecting and enlarging portions of the drawing is called windowing. The process of cutting away boundaries at the windows is called clipping. This chapter elaborates on both these topics.

Grouping of picture parts into various groups makes assembly drawing or superimposition of pictures easy. Segmentation is the method of grouping such various parts. The segment is the unit of the display file. This chapter discusses segments and segmentation in greater detail.

The power and utility of computer graphics has wide spread recognition in all fields. There are wide ranges of hardware and software graphics available. In this chapter we will see the introduction of graphics hardware components and software packages.

Three dimensions allows us to see a structure from different directions. This chapter shows the reader the usage of mathematics for the representation of the object on the computer.

In order to acquire a 3D picture of the model, hidden lines and surfaces must be removed. Lines are assumed to be the edges of the surface and we refer to the general process of moving hidden surfaces as hidden surface removal. This chapter explores the different approaches used in order to remove hidden lines and surfaces in an object.

This chapter explores the various concepts under illumination and shading in computer graphics.

This chapter discusses the various concepts under curves and fractals as used in graphic designing. Some of the concepts discussed are pentagon meshes, curve generation etc.

Texture mapping is a method for adding detail, surface texture, or colour to a computer-generated graphic or 3D model. Adding surface detail helps keep graphics images from looking simple and sterile. This chapter this concept in greater detail.

Animation is the rapid display of a sequence of images of 2-D or 3-D artwork or model positions in order to create an illusion of movement. This chapter discusses animation and the concepts under it as used in computer graphics.

A Graphical User Interface (GUI), is a type of user interface which allows people to interact with electronic devices such as computers; hand-held devices such as MP3 Players, Portable Media Players or Gaming devices; household appliances and office equipment with images rather than text commands. This chapter discusses GUI's and their evolution in detail.

It can be defined as the field concerned with the computer-controlled integration of text, graphics, drawings, still and moving images (Video), animation, audio, and any other media where every type of information can be represented, stored, transmitted and processed digitally. This chapter discusses Multimedia in greater detail.