MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

COMPUTER GRAPHICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Number of control points in parametric cubic curve is
A
6
B
9
C
12
D
4
Explanation: 

Detailed explanation-1: -The degree of the polynomial defining the curve segment is one less that the number of defining polygon point. Therefore, for 4 control points, the degree of the polynomial is 3, i.e. cubic polynomial.

Detailed explanation-2: -In fact, these algorithms are so efficient that other types of curves are often converted to Bezier curves. For example, it is possible to approximate a 90 degree circular arc with a Bezier curve. Recall that a cubic Bezier curve has four control points.

Detailed explanation-3: -To find any point P along a line, use the formula: P = (1-t)P0 + (t)P1, where t is the percentage along the line the point lies and P0 is the start point and P1 is the end point.

Detailed explanation-4: -The Bezier curve obtained from the four control points is called a. A. Square Bezier curve.

There is 1 question to complete.