CSE 167 Final Project - Ryan Doving

Reflection Robot




Program can be downloaded here


Screenshots



  • All 3 lights turned on, demonstrating specular highlights and "reflection" on the floor






  • Stenciling of robot below plane is apparent, creating a proper reflection






  • Demonstrates rotation of the viewer. Reflection of a light on the plane is also visible




    • Comments

    (also available here) 
    Instructions:

Run FinalProject.exe.  

arrow keys         -  move the robot
's', 'f', 'e', 'd' -  rotate viewer
1, 2, 3            -  toggle lights
'w'                -  toggle wireframe mode
'c'                -  toggle culling back faces
ESC                -  exit program



Technical Explanation:

This program uses OpenGL to highlight techniques such 
as Phong lighting, blending, and polygon offsets to 
create a robot that moves around on a reflective floor. 

The actual robot is drawn using GLUT solid polygons and 
triangle fans.  Normals were added to non-GLUT objects 
to enable the use of Phong lighting.

A quad with alpha value less than 1 is then rendered to 
create the floor.  It uses transparency to make visible 
a copy of the robot and lights scaled underneath the 
floor, which gives the effect of a reflection.

The robot is then redrawn scaled under the floor.  The 
lights are also redrawn to create accurate lighting 
effects for the "reflection".  This second robot is 
visible through the semi-transparent floor, which gives 
the effect of a reflection off the surface of the floor.



Aims:

I originally planned to draw a robot on a reflective marble 
floor, using texture maps to create the marbled effect. 
The difficult part of this was trying to make the texture map 
transparent.  After spending several hours over the recommended 
20-25 hour limit to no avail, I decided to revert back to the 
plain floor.