cs602 current subjective question paper fall 2010 on 17/02/2011

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Please solve this and upload again. For figuers
Suppose the refractive index of the material is 1.7 and refrective index of air is 1. Now calculate its critical angle.
Which type of light from parallel light, Point light and Spot light you would prefer in your lighting model, in the case,

a. You have limited computation power
b. You have no problem of computation power, but you have to make the scene as much realistic as possible.
c.
d.
e.
f.
g. Explain how recursive subdivision function of triagle helps in improving the polygonal model of surface?
h.
What is the difference between triangle fan and strip? Explain with the help of figures.
What is the main difference between orthographic and oblique projection?
If N is the number of small pieces that go into the larger one, S is the scale to which the smaller pieces compare to the larger one and D is the dimension. Then give the equation of the Hausdorff-Besicovitch dimension?
Why Transformations are important for graphics?
By looking at above three given figures what you can interpret keeping in mind fractal dimensions?
#define PI 3.14159265
#define EDGES 30
/* draw a circle */
glBegin(GL_LINE_STRIP);

for (i = 0; i <= EDGES; i++)
glVertex2f(cos((2*PI*i)/EDGES), sin((2*PI*i)/EDGES));
glEnd();

Explain why this code is called bad when constructing a closed surface for two-dimensional example?
Write down the names of different types of perspective projection.
What is meant by evaluator? Name at least two OpenGL routines of Modeling Transformation for above scene making?
What will be degree of Bezier Curve, which having 3 control points?
Write down code for using glut library in your program?
Define any two Basic Transformations?

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