Cases of clip a line segment-pq, Computer Graphics

Cases of clip a line segment-pq

Case 1: As we determine a new value of tE that is value of parameter t for any potentially entering (PE) point we select tmax as:  tmax = max {tmax, tE}. The initial value of tmax = 0 is considered.

Case 2: As we find a new value of tL that is value of parameter t for any potentially leaving (PL) point then tmax value is updated by tmin = min {tmin, tL}. The initial value of tmin = 1 is considered.

At last when value of t for all edges are determined and if tmax < tmin then line is visible else not. As well as line is visible from

P + tmax (Q - P)        to   P + tmin (Q - P) that is

P + t (Q - P) hence tmax   ≤ t ≤ tmin

tmax < tmin       (draw line)

tmax < tmin       (reject line)

Posted Date: 4/3/2013 3:31:35 AM | Location : United States







Related Discussions:- Cases of clip a line segment-pq, Assignment Help, Ask Question on Cases of clip a line segment-pq, Get Answer, Expert's Help, Cases of clip a line segment-pq Discussions

Write discussion on Cases of clip a line segment-pq
Your posts are moderated
Related Questions
What is the advantages of electrostatic plotters? Advantages of electrostatic plotters: They have very high quality printers and faster than pen plotters. Recent electros

Essential Elements for the Raster Scan Display Three elements are essential for the raster scan display. They are as: 1) The Frame Buffer that is also termed as the Refresh

Write short notes on active and passive transformations?  In the active transformation the points x and x represent different coordinates of the similar coordinate system. Here

Explain the term- Control Traffic lights (controlling the sequence of lights to maintain optimum traffic flow), chemical and nuclear plants (opening and closing valves, safety

Associative Links: it is a link that is completely independent of the exact structure of the information. For illustration we have links depends on the meaning of various informat

Q. Why are all resolutions in ratio of 4:3? The bad news is that almost every monitor can only display upto a maximum of 262,144 colours (i.e.  18 bits/pixel Colour Depth). The

Properties of Perspective projections - Transformation 1) Faraway objects seem smaller. 2) Straight lines are projected to straight lines. 3) Let line 1 and 2 is two s

Single Point Perspective Transformation - Viewing Transformations In order to derive the particular point perspective transformations beside the x and y-axes, we construct fi

Electronic Encyclopedia : This is the application of multimedia for the creation of an encyclopedia along with millions of entries and hypertext cross references covering a br

2D Shape Primitives You have already learnt to plot a point or a pixel on any display device. In this unit, we shall introduce you to various devices available for data input o