IN204-Project

Ray tracing with c++

Usage

For more scenarios than the demo given by main.cpp, edit this construct function in source code with the following instructions:

Construct a list for all objects to be rendered : HittableList world

Define a texture with : auto texture = std::make_shared<TEXTURE>(...)

Define a material with : auto material = std::make_shared<MATERIAL>(texture)

Define a geometry with : auto geometry = std::make_shared<GEOMETRY>(Point3d(X,Y,Z), RADIUS, material)

Add this geometry to world : world.add(geometry)

(Arguments can be slightly differed from method to method, check the header file for accurate usage.)

Then just build and run the ray tracing program!

Currently supported options for TEXTURE are:

• CheckerTexture: Squares distributed like checker

Currently supported options for MATERIAL are:

• Lambertian : Material to simulate objects that cause diffusion reflection
• Metal : Material to simulate metal objects
• Dielectric : Material to simulate glass-like objects
• Diffuse Light : Under construction yet

Currently supported options for GEOMETRY are:

• Sphere
• Box
• Triangle

Build and run

For Linux Users

Run the following command in your terminal:

bash run.sh

For Windows Users

Run the following command in your Command Prompt:

.\run.bat

Configuration Options

Both scripts allow you to change variables for different work modes. Here are the options you can configure:

Change the variables in script for different work mode

• -n_samples : Number of samples per pixel during rendering
• -max_depth : Maximum recursion depth for one ray
• -image_width : Width of image rendered
• -n_threads : Threads used in parallel mode
• -p : parallel mode on
• -a : anti-alias mode on

Log

result/log.txt : you can find the corresponding parameters and elapsed time appended in this file after every run.

Caracteristics to be implemented

• Texture (mapping from 2d to 3d)
• OOP on color.h
• Light source
• Motion of objects
• Fix the noisy points
• Optimisation on design(Matrix operation, Search for object hits)