Renderman Images

For this assignment, we were asked to play around with Renderman and make some changes to a given image. One image was to display changes of the different attributes of the initial image, and the other image was to change the shaders (downloaded & modified, or a shader of your own).

On the attribute-change image, I changed the color of the plastic ball, spread out the wooden pattern with less roughness and more ring-scale, and increased the brick-width and mortar thickness of the brick floor.

For the image with new shaders, the wall is a stucco shader from the shader repository, in which I inverted the displacement of the stucco giving it a more cement-like feel. The ball is shaded with "funkyglass", which I changed to have a more transparent feel, darker edges, and more colors; resulting in a oil-bubble like image. The shader on the bottom was one I wrote myself, using the noise function to mix between an opacity value and a given color. 

Attribute Changes on original image

Shader changes on original image

For the extra assignment, we were to make a separate image and different shaders. The below is my submission of the Towers of Hanoi. For this submission, I used the provided "plastic" and "wood2" surface shaders, and modified some of their attributes. I also retrieved a "superplank" surface shader for the floor and "KMPuffyclouds" for the sky. I then also created my own "grass" displacement shader, and added my "coals" shader from the above shader image in a green color to make a better grass effect.

Towers of Hanoi

Ray Tracer Part 4 - Procedural Shading

For this assignment, we had to add a pattern/texture to the floor of the scene. At different points of intersection, the floor is now different colors.

Initially, the pattern was a checkered Red/Yellow floor, as shown below:

Afterwards, as an "extra", I added another pattern. Now the pattern on the floor is a diagonal, as shown below.

I also allowed for an easy way to make the stripes and grid go at smaller and larger sizes, as shown below.

Ray Tracer Part 3 - Shading

Phong Illumination on Scene

The purpose of this assignment was to implement the Phong Illumination model in the ray tracer assignment. In this picture there are 3 light models (format: (r, g, b, intensity)):

ambient ( 1, 1, 1, .2 ) 

diffuse ( .4, .4, .4, 1 ) 

specular ( 1, 1, 1, 1

For an "Extra", I implemented another Light Source. 

To show the differences with the different light sources and experiment with colors, I made the spheres an off-white (0.9, 0.9, 0.9). The Normal light source is the same as the light source above. The new light sources have the following model specifications: 

Red Light 
specular ( 1, 0, 0, 1 )
diffuse ( 1, 0, 0, 1)

Green Light
diffuse ( 0, 1, 0, 1 )
specular ( 0, 1, 0, 1 )

Blue Light 
diffuse ( .1, .1, 1, 1 )
specular ( .1, .1, 1, 1 )

3 light sources, Red, Green, and Blue

Red and Normal light

Blue and Normal light

Red and Blue, with Normal Light

Ray Tracer Pt 3 : Basic Shading

Phong Illumination / Shading

The purpose of this assignment was to implement the Phong Illumination model in the ray tracer assignment. In this picture there are 3 light models (format: (r, g, b, intensity)) ambient(1, 1, 1, .2), diffuse(0, .3, .3, .6), and specular(1, 1, 1, 1).

For an "Extra", I implemented another Light Source. 

To show the differences with the different light sources and experiment with colors, I made the spheres white. The new light source has the following model specifications: specular(0, .4, .4, 1) and diffuse(.4, .4, 0, 1). The first image is both light sources, and below that are each light source alone.

Both Light Sources

Light Source #2

Light Source #1