MCQ IN COMPUTER SCIENCE & ENGINEERING

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COMPUTER SCIENCE AND ENGINEERING

COMPUTER GRAPHICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
void glvertex*( ____ ), the ‘*’ means the programmer need to specify:(select all that apply)
A
number of dimensions
B
data type
C
number of vertices
D
number of edges
Explanation: 

Detailed explanation-1: -The function glVertex2f specifies the x and y coordinates of the vertex, and the z coordinate is set to zero. There is also a function glVertex3f that specifies all three coordinates. The “2” or “3” in the name tells how many parameters are passed to the function.

Detailed explanation-2: -The glVertex function commands are used within glBegin/glEnd pairs to specify point, line, and polygon vertices. The current color, normal, and texture coordinates are associated with the vertex when glVertex is called. When only x and y are specified, z defaults to 0.0 and w defaults to 1.0.

Detailed explanation-3: -OpenGL (Open Graphics Library) is a cross-language, cross-platform application programming interface (API) for rendering 2D and 3D vector graphics. The API is typically used to interact with a graphics processing unit (GPU), to achieve hardware-accelerated rendering.

Detailed explanation-4: -A data type, in programming, is a classification that specifies which type of value a variable has and what type of mathematical, relational or logical operations can be applied to it without causing an error.

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