BIT Computer Graphics

Draw the block diagram of vector and raster graphics display architecture and write the advantages and disadvantage of both display architecture.

Discuss the use of computer graphics in different areas.

Explain architecture of random scan display systems with suitable diagram.

Differentiate between raster scan and random scan display systems.

List the major differences between DDA and Bresenham’s algorithm. Illustrate the Bresenham’s algorithm to the line with end points\((10, 6)\) and \((12, 1)\).

How decision parameter can be used to draw circle? Calculate the points to draw a circle having radius 5 and center as \((10, 5)\).

Write the algorithm for Bresenham's line drawing? Digitize a line with end points \(A(6, 9)\) and \(B(10,5)\) using Bresenham's line drawing algorithm.

What is the role of clipping? Plot the line with end points \((20, 10)\) and \((30, 18)\) using DDA.

Digitize circle with center \((0, 0)\) and radius = 6.

Write short notes on:

a. Shearing and Scaling

b. Line Clipping

Reflect a line segment having end points \((9,3)\) and \((12,10)\) about a line \(X = 7\). Draw initial and final result graph as well.

Explain Cohen-Sutherland line clipping Algorithm.

How can polygons be clipped? Describe Gouraud Shading model with necessary derivations.

Explain Cohen-Sutherland Line Clipping algorithm with example.

Differentiate between parallel and perspective projection. Perform the rotation of triangle with vertices \(A(5,7)\), \(B(12,85)\) and \(C(5,3)\) counterclockwise 30 degree about the pivot point \((5,3)\).

List the rotation matrix in clockwise direction with respect to x-axis, y-axis and z-axis. Rotate the object \((0, 0, 0)\), \((2, 3, 0)\), \((5, 4, 0)\) about the rotation axis \(y = 4\).

What is intensity attenuation? Describe the various types of projection.

What is Beizer curve? Describe its properties.

Describe polygon, vertex and edge table of a polygon.

What is boundary representation technique? Explain.

Explain about parametric curve. Describe the properties of Bezier curve.

Explain the wireframe representation of 3D objects.

Explain about parametric cubic curve with its properties.

Explain the use of polygon tables for boundary representations.

How the geometric and attribute information of a 3D objects are stored for the object representations? Explain with suitable example.

Explain how can line method detects the visible surface with example.

Write short notes

a. Z-Buffer

b. Polygon Table

Describe z-buffer method for visible surface detection. State its limitations and how these limitations can be reduced.

Differentiate Phong Shading with Gouraud Shading method.

Explain the Phong illumination model for specular reflection.

Explain ambient light, diffuse reflection and specular reflection with examples.

Write procedure to render the polygon surface by using Phong shading model.

Write short notes on:

a) Ambient light

b) Diffuse reflection

Explain motion capture with an example.

How does a polygon can be created in OpenGL? Illustrate with an example.

Explain about openGL and call back functions.