Questions for computer graphics
Chapter 1+2+3+4+5
Question one: Answer the following questions:
1)what are the areas that Early Applications of Computer Graphics may
use?
2)what (CAD) stand of , and Why we need to use these apps?
3)Computer Graphics Applications used in the following areas?
4)what are the Graphical user Interfaces (GUIs)?
5)We want to draw a rectangle, how do we describe it to a computer?
6)what are the categories of Input Devices?
7)what are the types of Locator Devices?
8)what are the kinds of scanners ?
9)Keyboard used in the following areas?
10) The Basic (Fundamental) Output elements in a Computer Graphics
system for Drawing any Complex Figure:?
11) What are the types of raster displays?
12) What are the types of LCD displays?.
13) What are the specifications of CRTs?
14) What are the advantages of LCDs?
15) Why do we use matrix For transformation geometric ?
16) What is the 2D Geometric Transformations?
17) mention the three types of input modes?
18) what API stand for ?
Question two: put the suitable term/terms in the blank spaces
1) (................) a location in space, 2D or 3Dsometimes denotes one pixel
2) (................) straight path connecting two points infinitesimal width,
consistent density beginning and end on points
3) (................) line in 3D connecting two vertices
4) (................) set of connected polygons forming a surface (or object)
5) (................) Similar to Polyline But the first and Last Point is same.
6- (................) process of generating an image from the model
—
—
7- (................) : a video output device that drives a video display from
a memory containing the color for every pixel
8- (................) : measure of number of pixels on a screen (m by n)
—
9- (................) : Size of a pixel, distance from center to center of
individual pixels.
—
10- (................) : A block of memory, dedicated to graphics output,
— ———that holds the contents of what will be displayed.
—
11- (................)one element of the framebuffer. —
12- (................) number of bits allocated per pixel in a buffer —
13) two of Image Quality Issues are (................)..and (................)
—
14) (................) is the point in 3D
15) Computer Graphics system are of two Types(................) system…and
(................)
16).. (................) is basically a piece of Interface or a Program which sits
between the User and Graphics Application Program . It helps graphics
system interact with the User both in terms of (................)and (................)
17) (................) A block of memory, dedicated to graphics output, that
holds the contents of what will be displayed.
18) ———(................) opens up a myriad of applications, ranging from
interactive design of buildings, to control of large systems through
graphical interface.
19) (................) does not support interaction directly The major reason for
this omission is that the system architects who designed OpenGL wanted to
increase its portability by allowing the system to work in a variety of
environment.
20) The (................) can provide the minimal functionality, such as opening
of windows, use of the keyboard and mouse, and creation of pop-up menus
through the toolkit’s API.
21) In computer graphics, the use of (................) is more complex.
22) we can use (................) as physical device either to select a location on
the screen, or to indicate which item in a menu we wish to select .
23) In OPENGL assumes (................) is the client
24) in openGL assumes (................) are graphics servers that provide
display and input services to the OpenGL program
25) (................) is one of the fastest methods to draw static data
because vertex data and OpenGL commands are cached in the display
list and minimize data transmissions from the client to the server side
26 ) (................) allow us to perform operations ranging from —
choosing the color with which we display a line segment, to picking a
pattern with which to fill the inside of a polygon, to selecting a
— typeface for the titles on a graph
27) (................) allow us to specify various views, although APIs differ in
— the degree of flexibility they provide in choosing a view
28) (................) does not provide any viewing functions but relies on the
— use of transformations in the shaders to provide the desired view
29) One of the characteristics of a good (................) is that it provides the
user with a set of transformation functions that allows her to carry out
— transformations of objects, such as rotation, translation, and scaling.
30) The (................) enable us to communicate with the window system, to
initialize our programs, and to deal with any errors that take place during
— the execution of our programs.
31) (................) is the operation of changing the position of the target from
the coordination to another
32) (................) is the operation of changing the angle of the object
— coordination to the axis.
33) (................) is the operation of changing the size of the object.
34) (................) is what the device returns to the user program)135) ((................) is a physical input on the device with which the user can
signal the computer.
36) - (................) is a group of OpenGL commands that have been stored
or compiled for later execution
Question three: Find the following transformation ?
1) When performing scale how to calculate the new point coordinates if
the original point and scale factor are as follows:
1. P(2, 5), Sx = 0.5, Sy = 0.5 Find P’ ?
2. P(2, 5), Sx = 2, Sy = 2 Find P?
3. P(1, 3), Sx = 2, Sy = 5 , P’ ?
2) Find the transformed point, P’, caused by rotating P= (5, 1) about
the origin through an angle of 90?
Question four: select the correct answer
1)Computer Graphics Applications used in the following areas?
1)Education and Training
2) Computer Art
3) Games/Movie
4)all of the above
2)what are the Graphical user Interfaces (GUIs)?
a)WIMP interface
b)HCI
c)all of the above
3) what are the Input Devices?
a)Locator Devices
b)Keyboard
c)Scanner
d)all of the above
4)what are the types of Locator Devices?
a)Mouse
B)Trackball
c)a & b
5) what are the kinds of scanners
a)Image Scanners
b)Laser Scanners
c)inklet based scanner
d) a and b .
e) all of the above
6)Keyboard used in the following areas?
1)Text input
2)List boxes, GUI
3)CAD/CAM
4)Modeling
5) all of the above
7) The values in the framebuffer are converted from a digital (1s and 0s
representation, the bits) to
a) image
b) an analog signal
c)all tower is incorrect
8)Image Quality Issues are:
a) Color
b) Brightness
c) all of the above
9) location in space, 2D or 3D sometimes denotes one pixel:
a)point
b)line
c)edge
10) The Basic (Fundamental) Output elements in a Computer Graphics
system for Drawing any Complex Figure:?
a) Raster Image
b) Polygon
c)A &B.
11) a video output device that drives a video display from a memory
containing the color for every pixel is
A- Rendering
B- Frame Buffer
C- Pixel
12) Size of a pixel, distance from center to center of individual pixels is
A- pitch
B- Pixel
C- Hertz
13) use small flat chips which change their transparency properties when
: a voltage is applied
A- Liquid crystal displays
.B- Cathode Ray Tubes
C- Vector Displays
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With my best wishes “””””””””””””””””