Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Ellipse Generation Algorithm
You know that a circle is symmetric in all the octants, while ellipse is symmetric with respect to four quadrants. Therefore, to draw an ellipse, we need to determine approximating pixels in one quadrant. We proceed exactly the same way as we did in the case of a circle. Define a decision parameter and choose the next pixel position depending on the sign of the decision parameter. The decision parameter is defined in terms of the equation of an ellipse.
As in the case of a circle, let us assume that the ellipse is having centre at the origin. Consider its perimeter segment in the positive quadrant. Identify the point on the perimeter where the ellipse has tangent line with slope = -1. Then divide the positive quadrant in two regions- Region I where slope dy/dx > -1 and Region II where slope dy/dx < -1 . You may notice that for Region I, y values of points of the perimeter are decreasing slowly with respect to x values, than in Region II. This means for determining the approximating pixels, we have to do the following. For each increment in x value, y will either remain same or be decremented depending on the sign of a decision parameter. But in Region II, for each decremented y value, x will either be incremented or will remain the same (compare with two cases of Bresenham line drawing algorithm for slopes | m | < 1 and | m | > 1).
Digital & Interactive Media has been developed in 20th century: New media improve visual and verbal content. It doesn¹t replace earlier media. New media lets dynamic alteration of
What is Computer Graphics. Computer graphics remains most existing and rapidly growing computer fields. Computer graphics may be explained as a pictorial representation or gra
explain constraints
Question 1 Describe the process of formation of image in human eye Structure of the Human Eye Image formation in the Eye Brightness Adaptation and Discrimination
Military: In order to enter the military, one has to go by various training. Depending upon whether you want to be in the army, navy or the marines, you may be working along with
Scientific Visualization This is complex for the human brain to create sense out of the large volume of numbers produced through a scientific computation. Statistical and nume
Cohen Sutherland line clipping algorithm The algorithm uses the following main steps Divide the entire plane into nine disjoint regions using the four window boundaries
X-shear Regarding the Origin - 2-d and 3-d transformations Suppose an object point P(x,y) be moved to P'(x',y') in the x-direction, via the given scale parameter 'a',that is,
short note on shading
don,t no
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd