Polygon clipping algorithm, Computer Graphics

Assignment Help:

Write a polygon clipping algorithm to clip a polygon against rectangular clipping are.

Read the vertices of polygon to be clipped. 2. Read the coordinates of the rectangular clipping area against which it has to be clipped. 3. Considering the edge of rectangular area one at a time we apply the following algorithm. 4. /* p is the input vertex, vertex under consideration S is the previous vertex. F is the first point. E is the edge under consideration (of rectangular 7 area against which it has to be clipped) */ Input vertex P 5. If P is the point store it in a variable say F and proceed to step 7. 6. If P is not the first point then if edge 5t intersect edge E under consideration. Computer the intersection point 1 Output vertex 1 else proceed to step 7. 7. Store P in variable S (S=P) 8. If S is on left side of edge E output vertex S. 9. Repeat steps 4 to 8 till all the vertices are processed 10. /* for closing polygon */ if 3f intersect E Computer intersection point 1 output vertex 1 11. Repeat the above steps (4 to 10) with new output polygon obtained from step 10 for other edges of rectangular area under consideration. 

 


Related Discussions:- Polygon clipping algorithm

Flat panel, help me discuss about flat panel with respect to emissive and n...

help me discuss about flat panel with respect to emissive and non emissive display

2-d and 3-d transformations, 2-D and 3-D Transformations Previously, w...

2-D and 3-D Transformations Previously, we have presented approaches for the generation of polygonal regions and lines. We identified that once the objects are produced, the v

Disadvantages of analogue signal over digital signal, Problem: (a) Lis...

Problem: (a) List four components of ‘Multimedia'. (b) Write short notes on the following: (i) itunes (ii) ipods (c) Some Multimedia development teams can have an

Devi, Explain the 3d transformations

Explain the 3d transformations

Potentially entering and leaving points - clipping, Potentially entering an...

Potentially entering and leaving points - P E and P L The intersection point of the line and window might be classified either like potentially leaving or entering. Before g

Pcs or personal computers really - hardware for animation, PCs or Personal ...

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

Definitions of hypermedia, Definitions of Hypermedia It is a term ...

Definitions of Hypermedia It is a term created through Ted Nelson in the year 1970. It utilized as a logical extension of the term hypertext, wherein graphics, video, audi

Briefly explain the term density range, QUESTION a) Explain with the he...

QUESTION a) Explain with the help of a diagram, how a thermal inkjet printer works. b) Briefly explain the term density range. c) Distinguish between scaling and resampli

Proof of subsequent properties of bezier curves, Proof of subsequent proper...

Proof of subsequent properties of Bezier curves Note: Proof of subsequent properties of Bezier curves is left as a work out for the students P' (0) = n (p 1 - p 0 ) P

Define the term avatars- animation, Define the term Avatars- Animation ...

Define the term Avatars- Animation Avatars are another instance of animation. These are frequently used to represent people either in 3-D (as used in computer games) and in 2-D

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