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

Cases for digital differential analyzer algorithm, Cases for Digital Differ...

Cases for Digital Differential Analyzer Algorithm 1)  If in case 1, we plot the line another way round that is, moving in y direction via 1 unit every time and after that hunt

Approaches to area filling - output primitives, Approaches to Area Filling ...

Approaches to Area Filling  Some other approaches to area filling are   Scan line polygon fill algorithm Boundary fill algorithm Flood fill algorithm.

Representational animation - computer animation, Representational Animation...

Representational Animation - Computer Animation This method permits an object to change its shape throughout the animation. There are three sub-types to this. The initial is th

Do we have need of to generate full circumference of circle, 1.   Do we hav...

1.   Do we have need of to generate the full circumference of the circle utilizing the algorithm or  can we can produces it in a quadrant or octant only and after that utilization

Crt, crt is an analog or digital device

crt is an analog or digital device

What are the advantages of electrostatic plotters, What are the advantages ...

What are the advantages of electrostatic plotters?  They are faster than pen plotters and very high quality printers. Recent electrostatic plotters contain a scan-conv

What is 2d, Question 1 What is 2D? Explain method of converting 2D pattern...

Question 1 What is 2D? Explain method of converting 2D patterns into 3D images Question 2 Write about the following tools to create dart Create dart Multiply dar

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