Which of the following graphic primitives are considered as the basic building blocks of computer graphics ? (a) Points (b) Lines (c) Polylines (d) Polygons Codes :
(a) and (b)
Output primitives are the simplest geometric entities a graphics package draws directly.
Points and straight line segments are the basic building blocks; every other shape is assembled from them.
Polylines are chains of line segments and polygons are closed polylines, so they are derived rather than basic.
Hence, (a) and (b).
Similar Questions
Which raster locations would be chosen by Bresenham’s algorithm when scan converting a line from (1, 1) to (8, 5) ?
The end points of a given line are (0, 0) and (6, 18). Compute each value of y as x steps from 0 to 3, by using equation of straight line :
Which of the following is not a basic primitive of the Graphics Kernel System (GKS) ?
Given below are certain output primitives and their associated attributes. Match each primitive with its corresponding attributes :
List - I List - II a. Line i. Type, Size, Color b. Fill Area ii. Color, Size, Font c. Text iii. Style, Color, Pattern d. Marker iv. Type, Width, Color Line caps are used for adjusting the shape of the line ends to give them a better appearance. Various kinds of line caps used are
The major adverse side effects of scan conversion are ;-
A. Staircase appearance
B. Unequal brightness of slanted lines
C. Picket fence problem
D. Rasterization
E. Pre-filtering and Post-filtering
Choose the correct answer from the options given below:
Consider the Breshenham’s circle generation algorithm for plotting a circle with centre (0, 0) and radius ‘r’ units in first quadrant. If the current point is (xi, yi) and decision parameter is pi then what will be the next point (xi + 1, yi + 1) and updated decision parameter pi + 1 for pi ≥ 0 ?
Consider a line AB with A = (0, 0) and B = (8, 4). Apply a simple DDA algorithm and compute the first four plots on this line.
Which of the following is/are side effects of scan conversion ?
a. Aliasing
b. Unequal intensity of diagonal lines
c. Overstriking in photographic applications
d. Local or Global aliasing
Below are the few steps given for scan-converting a circle using Bresenham’s Algorithm.
Which of the given steps is not correct ?
Important Questions from Output Primitives
A/An _____ creates an image directly on paper by spraying ink.
Consider the following statements with respect to approaches to fill area on raster system:
P: To determine the overlap intervals for scan lines that cross the area.
Q: To start from a given interior position and paint outward from this point until we encounter the specific boundary conditions.
Select the correct answer from the options given below:Which of the following is not a component of Memory tube display ?
Which raster locations would be chosen by Bresenham’s algorithm when scan converting a line from (1, 1) to (8, 5) ?
The end points of a given line are (0, 0) and (6, 18). Compute each value of y as x steps from 0 to 3, by using equation of straight line :
