graphics-final

Repository for holding my assignments for Stuyvesant High School Computer Graphics Course

Computer graphics is a post AP Computer Science course where we wrote our own graphics engine from scratch in a language of our choice (I chose Typescript). We covered topics like line/curve drawing algorithms, Phong shading, animations, and more. For my final assignment, I chose to learn and implement ray tracing.

Team

• Team Name: House Graphics
• Team Members: William Cao Period 10

Sample images:

Ray traced image

Bezier curves and lines

Animation and .obj files

Feature Implemented

• Antialiasing with raytracing. Supported materials are: glass, metal, and diffuse.

How to edit script.mdl?

• Please have "shading raytrace" as the first line of the mdl file.
• The only supported shape is a sphere. The command should formatted as:

sphere x y z radius material red green blue reflectionIndex|fuzz

• If the "material" is glass:
  • Put positive value for reflection index (last argument)
  • Reflection index: https://en.wikipedia.org/wiki/List_of_refractive_indices
  • put any random NUMBER for "red", "green", and "blue" field
• If the "material" is diffuse:
  • put any NUMBER for last argument
• If the "material" is metal:
  • last value is "fuzz" positive value from 0 to 1 exclusive. fuzziness of reflection from metal
• The screen is -1 to 1 by -1 to 1 (and not 500x500).
• The camera is located at (0, 0, 0), so use negative z values
• The program will display where the program is currently at like so:

  Finished pixel 239000 of 250000 (0.956)
  

  This means it is 95.6% done, and has finished 239,000 pixels of 250,000.

How do I run this?

WARNING: THIS PROGRAM TAKES A LONG TIME TO RUN AND IS CPU INTENSIVE :)

0. I assume you can compile typescript, have npm installed, and imagemagik working. Use macOS or a linux distro.
1. Clone the repo and change directory into it

   git clone https://github.com/WilliamC07/graphics-final.git && cd graphics-final.git
   

2. Run make

   make
   

3. Open the image created (asd.png)

Source

• I followed this guide (Ray tracing in one weekend).
  • The guide was in c++

Proposed Features

• Ray tracing
  • Online guide
  • Another one
  • I can expand on this to include more reflection types (transparency, water bending light, etc...), or until my computer takes too long to run the program when debugging.
• Supporting .obj texture (when I get ray tracing to work)
  • I already have .obj support from past assignments, and it supports converting quadrilateral faces to 2 triangular faces.
  • Texture mapping
    • Javascript parsing of .png files library
    • Javascript parsing of .jpeg files library