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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
What is a dot size and interdot distance? Dot size may be explained as the diameter of a single dot on the devices output. Dot size is also known as the Spot size. Interdo
Positive Accelerations - Computer Animation So as to incorporate increasing speed in an animation the time spacing among the frames should increase, hence greater change in th
what is vecgen algorithm and bresenham linequestion..
Explain the different input modes used in interactive computer graphics.
QUESTION 1: a) Draw a Bezier curve showing the following components i. hull ii. curve CV iii. span iv. start and end point b) Maya provides highly effective tools for all t
Differentiate among interpolation spline and approximation spline? When the spline curve passes by all the control points then it is known as interpolate. When the curve is
Silicon Graphics - Hardware for computer animation The SGI platform is one of the most broadly used hardware platforms in professional or broadcast feature computer animation
Resolution - Display Devices On a display device, the resolution means the maximum number of points that can be displayed simultaneously without an overlap in a row and number
Explain rubber-band interactive picture technique
Objectives After completing this section, you must be familiar with: explain computer graphics, its characteristics and features; Conversations about applicat
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