Line drawing - points and lines, Computer Graphics

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.

Posted Date: 4/3/2013 1:35:12 AM | Location : United States







Related Discussions:- Line drawing - points and lines, Assignment Help, Ask Question on Line drawing - points and lines, Get Answer, Expert's Help, Line drawing - points and lines Discussions

Write discussion on Line drawing - points and lines
Your posts are moderated
Related Questions
Taxonomy of Projection - viewing transformation There are different types of projections as per to the view that is essential. The subsequent figure 3 demonstrates taxonomy o

File Formats that are used for Bitmap Data Bitmap data can be saved in a wide variety of file formats are: • BMP: restricted file format that is not appropriate for use in

when dda algorithm is more efficient than bresenhem line drawing algorithm

IMG/MAC/MSP File Formats IMG files were originally implemented to work along with GEM paint program and can handle monochrome and grey level pictures only. MAC files are uti

Scan Line Algorithm A scan line algorithm determines the overlap intervals of the polygon with each scan line to obtain interior points of the polygon for assigning those point

PCs or Personal Computers Really - Hardware for Animation  these are really versatile machines that have been around for years. PCs are the favorite of many computer users, due

Question: (a) (i) Give four reasons to explain why are the bitmap images unsuitable for use in a high end print production workflow. (ii) An eps file has two main parts,

Raster Scan Display Device - types of refresh monitors Now day screen display is also based on Cathode ray Tube technology, except that in place of displaying the picture tra


Question) Compute the following:  a) Size of 420 × 300 image at 240 pixels per inch.  b) Resolution (per square inch) of  3 ×  2 inch image that has  768×512 pixels.  c) H