CS602 Final Term Solved Current Subjective Set 2 by Junaid

Q1. Difference between point and vector?

Point Vector A point position in space. A Vector no fixed position in space The only characteristic that distinguishes one point from another is its position. A Vector has both magnitude and direction.

we draw points as dots vectors as line segments with arrows.

2. Grouard shading:

ANSWWER:

is a per-vertex color computation. What this means is that the vertex shader must determine a color for each vertex and pass the color as an out variable to the fragment shader. Since this color is passed to the fragment shader as an in varying variable.

3. Phung shading:

is a per-fragment color computation. The vertex shader provides the normal and position data as out variables to the fragment shader. The fragment shader then interpolates these variables and computes the color.

4. Fractals and Euclidean geometry:

Fractals are distinct from the simple figures of classical,

Euclidean, geometry—the square, the circle, the sphere, and so forth.

They are capable of describing many irregularly shaped objects or spatially nonuniform phenomena in nature such as coastlines and mountain ranges.

5. Types of fractals:

•  Fractal Trees
•  Fractals in Animal Bodies.
•  Fractal Snowflakes.
•  Fractal Lightning and Electricity.
•  Fractals in Plants and Leaves. Two basic types of projections are provided for us by OpenGL, along with several corresponding commands for describing the relevant parameters in different ways. One type is the perspective projection.

6. OpenGL:

ANSWER

The OpenGL API is a portable API that can be compiled and run on many platforms. OpenGL programs are typically written in C and C++.

Q7. What is GLUT?

GLUT (pronounced like the glut in gluttony) is the OpenGL Utility Toolkit, a window system independent toolkit for writing OpenGL programs.

8. Curves

are regular bends provided in the lines of communication like roads, railways etc. and also in canals to bring about the gradual change of direction. They are also used in the vertical plane at all changes of grade to avoid the abrupt change of grade at the apex.

9. Advantages of curve:

They provide comfort to the passengers. If there is an abrupt change in the direction nor grade of a highway it will upset the passengers.

Q10. Define Bezier curve and its formula?

A Bezier curve generally follows the shape of the defining polygon.

Formula:

Q11. Why 24-bit RGB is called true color, define how red green and blue values in it?

A 24-bit display, of course, uses 24 bits, or 3 bytes per pixel, for color information. This gives 1 byte, or 256 distinct values each, for red, green, and blue. This is generally called true color, because 2563 (16.7 million) colors is about as much as your eyes can discern, so more color resolution really isn't necessary, at least for computer monitors.

12. Advantages of plasma display

•  Can be wall mounted.
•  Less bulky than rear projection television.
•  Virtually less motion blur, so better motion tracking like high refresh rates and faster response time.
•  Far wider viewing angle.
•  More pixels per inch.

13. Disadvantages of plasma display.

•  Commonly do not come in smaller sizes than 40 inches.
•  Heavier in weight with respect to screen size.
•  A picture is not so clear under bright conditions.
•  Glass screen damage can be permanent and far more difficult to repair.
•  Poor reproduction of black.
•  Radiation is emitted for screen.