User:Subekshya Poudel/Teaching Lesson Plan 21

Subject : Computer Graphics

Period: Fourth

Topic: Three Dimensional Graphics

Teaching Item: 3D object representation: Polygon table

Level: Bachelor 6^th sem

Unit: Five

Time: 50 min

No. of Students:

Specific Objective

At the end of this lesson students will be able to:

understand the concept of polygon surface
learn about the structure and organization of polygon tables.
understand about polygon meshes with its advantage and disadvantage

Teaching Materials

Laptop
Presentation slide
Projector
Whiteboard and marker

Teaching Learning Activities

1. I will begin the class by describing about 3D object representation
2. Then categorize 3D object representation into 2 parts: Boundary representations and Space–partitioning representations and discuss about them.
3. I will draw three figures in the whiteboard(triangle, rectangle, hexagon) and ask students what common thing did you find in those figures.
4. Some students will answer the line segment is common.
5. Ask students about what they know about polygons.
6. By showing the figures from whiteboard I will define the polygon is a plane figure that is made up of straight line segments connected to form a closed shape.
7. Describe about polygon surfaces.
8. Discuss the importance of polygon tables in 3D graphics and rendering.
9. Introduce three table that polygon tables consist of: vertex table, edge table, and surface table.
10. Present how vertex table, edge table and surface table are created from whiteboard.
11. Discuss about polygon meshes with its advantages and disadvantages.
12. Show the figure of polygon meshes from projector.
13. Discuss the equation for plane surface: Ax + By + Cz + D = 0 using the coordinate values.
8. Ask students if there is any confusion on today's topic and provide guidance and assistance if needed.

Assessment

1. Describe the steps involved in the Sutherland-Hodgman polygon clipping algorithm and how it can be applied to clip polygons against a clipping window.