Physically Based Renderer: A Multithreaded, Matrix-Based Path Tracer With Interactive Ray Visualization About: TODO: description TODO: make GIF of render Math Behind the Renderer: Rays $$ \mathbf{r}(t) = \langle x_0, y_0, z_0 \rangle + t \langle a, b, c \rangle $$ where: $\mathbf{r}(t)$ is the position along the ray at distance $t$, $\langle x_0, y_0, z_0 \rangle$ is the ray origin, $\langle a, b, c \rangle$ is the ray direction vector.