Trivial rejection case of cohen sutherland line clippings, Computer Graphics

Assignment Help:

Trivial Rejection Case of cohen sutherland line clippings

Case: it  is Trivial Rejection Case; if the logical intersection (AND) of the bit codes of the end points P, Q of the line segment is ≠ 0000 then line segment is not observable or is rejected.

Notice that, in figure of various cases of Cohen Sutherland Line Clippings, line 2 is totally on the top of the window but line 3 is neither on top nor at the in bottom plus, either on the left hand side nor on the right hand side of the window. We utilize the standard formula of logical ANDing to test the non visibility of the line segment.

675_Trivial Rejection Case of cohen sutherland line clippings.png

Figure: Cohen Sutherland line clipping

 Consequently, to test the visibility of line 2 and 3 we require calculating the logical intersection of end points for line 2 and lining 3.

Line l2: bit code of end points are 1010 and 1000 logical intersection of end points = (1010) ^ (1000) = 1000 like logical intersection ≠ 0000. Hence line 2 will be invisible.

Line l3: end points have bit codes 0010 and 0101 here logical intersection = 0000, that is, 0010 ^ 0101 = 0000 from the Figure of various cases of Cohen Sutherland Line Clippings, the line is invisible. Likewise in line 4 one end point is on top and another on the bottom therefore, logical intersection is 0000 although then it is partially visible, similar is true along with line 5. Such are exact cases and we will illustrate them in case 3.


Related Discussions:- Trivial rejection case of cohen sutherland line clippings

Limitations of cohen sutherland line clipping algorithm, Limitations of Coh...

Limitations of Cohen Sutherland line clipping Algorithm The algorithm is merely applicable to rectangular windows and not to the other convex shaped window. Consequently, a

Subdivision of polygon - visible surface detection , Subdivision of polyg...

Subdivision of polygon Test to find out the visibility of a single surface are made through comparing surfaces that as polygons P along regarding a specified screen area A.

Character generation - output primitives, Character Generation You know...

Character Generation You know that graphics displays often contain components which are text based.  For example graph labels, annotations, descriptions on data flow diagrams,

Sprite animation interactive may be non rectangular, Sprite animation inter...

Sprite animation interactive, may be non rectangular (Computer games) In its simplest form it is a 2-D graphic object which moves across the display. Sprites frequently can hav

Objectives of curves and surfaces - modeling and rendering, Objectives of C...

Objectives of Curves and surfaces - modeling and rendering After going through the section, you should be capable to: Implement the methods utilized to represent a pol

Two modes of operation of tablets - cad and cam, Two Modes of Operation of ...

Two Modes of Operation of Tablets Tablets typically sustain two modes of operation as: 1)  Digitizer Mode: creates a one-for-one connection between screen and tablet.

What is the use of projection reference point, What is the use of Projectio...

What is the use of Projection reference point?  In Perspective projection, the object positions are transformed to the view plane with these converged projection line and the p

What are the important applications of computer graphics, Can you list at l...

Can you list at least three important applications of computer graphics? There are lots of interesting applications of computer graphics. Three common applications are compute

Vertices of bezier curve find out 3 points on bezier curve, Specified p 0 ...

Specified p 0 (1, 1): p 1 (2, 3); p 2 (4, 3); p 3 (3, 1) as vertices of Bezier curve find out 3 points on Bezier curve? Solution : We consider Cubic Bezier curve as: P (

Perform a x-direction shear transformation, 1. If you perform a x-direction...

1. If you perform a x-direction shear transformation and then a y-direction shear transformation, will the result be the same as the one which is obtained when it is simultaneous s

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