3480 - Computer Graphics - Semester Project
 Name: Jacqueline Peralta

 
Bouncing Rubber Ball
 This gif shows my goal:
 
 source

 My computer graphics elements...
       • OpenGL Transformations
       • OpenGL 2-D Texture Mapping
       • GIF-animation
       • Points on a circle
       • Spherical Texturing
       • Specular Highlights


 To demonstrate my study...
       • Lab-7 Framework
       • Lab-6 Movement Framework
       • Spherical Texture Image found online
       • Experimental renderings showing progress
       • Final Animation

Here is the link to the original texture image map that I'll be using: Texture Image.

Note: I attempted to create my own spherical texture image, but it was too difficult.

Scroll down to see my progress...

 Project Attempt #1
 Using Lab-7 Cylinder 3D object framework. Stopped rotation. 
 Added Lab-6 Rocket movement framework. I also finished setting up 
 my animation and capture keys. The GIF is a bit "jumpy" because I 
 cropped it before exporting and this was the result.
 

 Project Attempt #2
 I have created my sphere by dividing it into sectors and stacks.
 This is the website that helped me understand how to build it: OpenGL Sphere
 I attempted to use GL_QUADS, but GL_QUAD_STRIP worked better.
 Here's a look at the object's faces. Number of stacks and sectors used is 6.
 

 Project Attempt #3
 2-D Texture Image added onto sphere. I have also added bouncing.
 This webpage helped me to understand how to map texture to a sphere: Texture Mapping
  

Project Attempt #4
Removed texture image for now. Working on adding specular highlight.
Changed background color so it matches the sample GIF. 
I kept getting a seg fault when resizing the window and then trying to 
capture frames to create my GIF. So, I had to modify the size of the
window within the code itself (640 x 480 => 300 x 600). 
Number of stacks and sectors being used is 24.



Lab-15 work done

Improved my GIF. I used GIMP to do it. It's one bounce looping and removed 
any extra frames one by one that would create a break in my GIF.



Project Attempt #5
My sphere now has specular highlight making it look shiny.
Material properties for the Phong lighting model include ambient, diffuse, 
specular, and shine. Lab-7 framework had set the light source properties already, 
but I had to add the shine. Sample GIF seems to have another light source, so 
I will attempt to add another one to mine as well.


Project Attempt #6
Here is my attempt at adding another light source. I adjusted the values for 
both light sources until it looked similar to that of the sample GIF.

I also added the squish effect to my sphere. I didn't use
the jello lab which would've helped to create that effect with springs,
therefore I had to use the glscalef() function to create it instead.


Final Animation
I've reapplied the texture image. This is the final result:



Lab-6 Rocket Animation


Lab-8 Screenshot


Lab-8 Animation