Line generation algorithms - graphic primitives, Computer Graphics

Assignment Help:

Line Generation Algorithms - Graphic Primitives

In previous section we have discussed the case of frame buffer, here information regarding the image to be projected upon the screen is accumulated in an m*n matrix, in the form of 0s and 1s; the 1s stored in an m* n matrix locations are brightened upon the display and 0's are not brightened on the display and this section that may or may not be brightened is termed as the Pixel i.e. picture element. This information of 0s and 1s offers the needed pattern on the output screen that is for display of information. In that a buffer, the screen is also in the form of m* n matrix, here all sections or niche is a pixel that is we have m* n pixels to constitute the output.

1184_Line Generation Algorithms - Graphic Primitives.png

Figure: Basic Line Generation

Here, it is to be noticed that the creation of a line is merely not restricted to the above pattern, since occasionally the line may have a slope and intercept which its information is needed to be stored in more than one part or section of the frame buffer, accordingly in order to draw or to estimated line two or more pixels are to be done ON. Thus, the result of the line information in the frame buffer is exhibited like a stair; this consequence of having two or more pixels ON to approximating a line among two points say A and B is termed as the Staircase effect. The idea is demonstrated below in following figure.

1666_Line Generation Algorithms - Graphic Primitives 2.png

Figure: Staircase effect

Hence, from the above figure, it is clear that while a line to be drawn is simply illustrated by its end points, after that it can be plotted through making close estimates of the pixels that best suit the line, and this estimation is responsible for the staircase consequence, that miss projects the information of the geometry of line accumulated in the frame buffer like a stair. This defect termed as Staircase consequence is prominent in DDA Line generation algorithms, hence, to remove the defect Bresenham line generation Algorithm was initiated. Now we are going to discuss DDA i.e. Digital Differential Analyzer, Algorithm and Bresenham line generation Algorithm next.


Related Discussions:- Line generation algorithms - graphic primitives

Multimedia tools, MULTIMEDIA TOOLS : In this sense, we will emphasize on v...

MULTIMEDIA TOOLS : In this sense, we will emphasize on various tools utilized in the field of multimedia. Basic Tools: The fundamental toolset for building multimedia p

Gourand shading and phong shading, Gourand shading and Phong shading ...

Gourand shading and Phong shading a. Gourand shading OR Intensity interpolation scheme We will discuss such scheme in further section of Gourand shading OR Intensity in

Application of computer aided design, Application of Computer Aided Design ...

Application of Computer Aided Design There are several CAD software applications. Several of them along with their respective vendors are listed here: CAD Applications

Morphing - key frame systems, Morphing - Key Frame Systems Transformati...

Morphing - Key Frame Systems Transformation of object shapes from one form to the other is termed as morphing as short form of metamorphism. This method can be applied to any o

Visible surface detection - modeling and rendering , Visible Surface Detect...

Visible Surface Detection - Modeling and Rendering Provided a set of 3-Dimentional objects and a viewing position for the generation of realistic graphics show, we want to de

What is surface patch, What is surface patch?  A single surface element...

What is surface patch?  A single surface element can be explained as the surface traced out as two parameters (u, v) take all possible values between 0 and 1 in a two-parameter

Briefly describe jackson''s theorem, Question 1 What is Packet-switching n...

Question 1 What is Packet-switching network? Discuss its basic operation Question 2 Briefly describe Jackson's theorem Question 3 List and explain the two popular

Silicon graphics - hardware for computer animation, Silicon Graphics - Hard...

Silicon Graphics - Hardware for computer animation The SGI platform is one of the most broadly used hardware platforms in professional or broadcast feature computer animation

Curve segment - properties of bezier curves, Curve segment - properties of ...

Curve segment - properties of bezier curves Note : 1) The joining point on the curve along w.r.t. the parameter based upon second derivates of Q(t) is the acceleration. Wh

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd