Line drawing - points and lines, Computer Graphics

Assignment Help:

Line Drawing - Points and lines

Line drawing is accomplished through computing the intermediate point coordinates along the line path between two given end points. Since, screen pixels are referred along with integer values, plotted positions may only around the calculated coordinates that is pixels that are intensified are those such lie very near to the line path if not precisely on the line path that is in the case of absolutely horizontal, vertical or 45° lines merely.

562_Line Drawing - Points and lines.png

 

Figure: Stair case effect

Standard algorithms are accessible to find out which pixels provide the best approximation to the desired line. Screen resolution conversely, is a large factor towards enhancing the approximation. In a high resolution system such adjacent pixels are very closely spaced which the approximated line-pixels lay extremely close to the real line path and thus, the plotted lines appear to be vary smoother; mostly like straight lines drawn upon paper. In a low resolution system, the similar approximation technique causes lines to be shown with a "stair-step appearance" that is not smooth as demonstrated in following figure; the effect is termed as the stair case effect.


Related Discussions:- Line drawing - points and lines

Identify what the use of homogenous co-ordinates, 1. Why are homogeneous co...

1. Why are homogeneous co-ordinates utilized in computer vision? I want to identify what the use of homogenous co-ordinates makes possible in terms of camera models. 2. Consider

Crt, explain the working procedure of crt digram

explain the working procedure of crt digram

Clip a line segment - cyrus beck line clipping algorithm, How does the Cyru...

How does the Cyrus Beck line clipping algorithm, clip a line segment whether the window is non convex? Solution : see the following figure 13, now the window is non-convex in s

What are the disadvantages of CAD, Disadvantages of CAD - Risk of deski...

Disadvantages of CAD - Risk of deskilling - High training costs to use packages - Can move work overseas     One CAD operator can do work of 5 manual draftsmen

2-d viewing and clipping - raster graphics and clipping, 2-D Viewing and C...

2-D Viewing and Clipping - Raster Graphics and  Clipping In the previous two units of this block, we illustrated the basic elements of computer graphics, that is, the hardware

How does the z-buffer algorithm find out which surfaces, Illustration 1: H...

Illustration 1: How does the z-buffer algorithm find out which surfaces are hidden? Solution : Depth or Z-buffer algorithm employs a two buffer area each of two-dimensional ar

Assignemt, i need help in my Engineering graphic assignment

i need help in my Engineering graphic assignment

Draw the letters s, Draw the letters S, P, R or U of English alphabet using...

Draw the letters S, P, R or U of English alphabet using multiple Bézier curves.  A complete code for plotting Bezier curves is given previously. There in the code, control point

For orthographic parallel projection, For orthographic parallel projection:...

For orthographic parallel projection:    glOrtho(left, right, bottom, top, near, far);  glOrtho2D(left, right, bottom, top);    Here left, right define the x-direction ex

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