SIMPLE-RT

A simple ray tracing program following RayTracingInOneWeekend.

• implement with glm
• compile with cmake
• reorganize and rename according to my personal habits
• developed with vscode and clangd

Running

Download glm 1.0.0-light from glm-releases and place the extracted glm under include.

To run the first weekend:

cd weeknd1/weeknd2/weeknd3
mkdir build && cd build
make
./test >> image.ppm

A reminder: glm::length() returns the length of a vector, and foo.length() returns the dimension of a vector.

Comments on book3

Code of book3 int this repo is half finished. Book3 is not as good as the book1 and book2 for the following reasons, in my opinions:

1. Code is not well organized like there is too much hardcoding.

2. The procedure is in a mess, for example pdf_value() and random() of HittableList should be implemented right after Hittable and Quad, or the HittableList lights would call pdf_value() of the base class and cause numerical problems.

3. Explanation is not clear. Take the explanation on Figure 11 as an example, and where does $\theta$ comes from?