Midpoint circle algorithm for scan converting a circle, Computer Graphics

Assignment Help:

Explain Bresenham s circle drawing algorithm,  OR   Explain midpoint circle algorithm for scan converting a circle.

Midpoint Circle Algorithm   1. Input radius r and circle center (x c , y c) , and obtain the first point on the circumference of a circle centered on the origin as (x0, y0,) = (0, r)  2. Calculate the initial value of the decision parameter as p0 = 5/4-r  3. At each x k position, starting at k = 0, perform the following test: If p k <0 , the next point along the circle centered on (0,0) is (x k+1,y k) and p k+1 = p k + 2x k+1 + 1 Otherwise, the next point the circle is ( x k + 1, y k -1) and p k+1 = p k+ 2x k+1 + 1 -2 y k where 2x k+1 = 2xk +2 and 2yk+1 = 2y k -2.  4. Determine symmetry points in the other seven octants.  5. Move each calculated pixel position (x, y) onto the circular path centered on (x c,y c) and plot the coordinate values: x = x +x c,  y = y + y c  6. Repeat steps 3 through 5 until x > y


Related Discussions:- Midpoint circle algorithm for scan converting a circle

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.

Explain the process of making of lcd, Explain the process of making of LCD ...

Explain the process of making of LCD An LCD is made with either a passive matrix or an active matrix (a polysilicate layerprovides thin film transistors at each pixel, allowing

Pitfalls in computer simulation - computer aided design, Pitfalls in comput...

Pitfalls in computer simulation Though generally avoided in computer simulations, in strict logic the rules governing floating point arithmetic even apply. For illustration, t

Common steps of designing the animation sequence, Common Steps of Designing...

Common Steps of Designing the Animation Sequence Common Steps of designing the animation sequence are as given: 1) Layout of Storyboard: Storyboard layout is the action ou

Image classification, The image classification is the process to categorize...

The image classification is the process to categorize images into one of several classes or categories. In this project, there are seven categories (Piano, Kangaroo, Strawberry, Su

Define octrees, Define Octrees?  Hierarchical tree structures called oc...

Define Octrees?  Hierarchical tree structures called octrees, are used to show solid objects in some graphics systems. Medical imaging and other applications that needs display

Image capture formats, Image Capture Formats: Video cameras appear in...

Image Capture Formats: Video cameras appear in two various image capture formats: progressive and interlaced scan. Interlaced Scan It is a technique of enhancing the

Ray tracing algorithm, Ray Tracing:  Ray t racing is the technique to dete...

Ray Tracing:  Ray t racing is the technique to determine which objects in the scene are visible.  In this to identify the visible surface for each pixel we continue to bounce the

Important points about the bezier curves, Important points about the bezier...

Important points about the bezier curves - modeling and rendering 1) Generalizing the idea of Bezier curve of degree at n based upon n+1 control point p0,.....pn P(0)= P 0

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