Refactor and add reflections

include/math/math_utils.h

@@ -0,0 +1,8 @@
+#ifndef MATH_UTILS_H
+#define MATH_UTILS_H
+
+#include "c_cpp_aliases/aliases.h"
+
+f32 clamp(f32 value, f32 min, f32 max);
+
+#endif // !MATH_UTILS_H

include/raytracer/raytracer.h

@@ -0,0 +1,54 @@
+#ifndef RAYTRACER_H
+#define RAYTRACER_H
+
+#include "c_cpp_aliases/aliases.h"
+#include "vector/vec.h"
+#include "window/window.h"
+
+typedef struct {
+  f32 radius;
+  vec3f_t centre;
+  colour_t colour;
+  f32 specular;
+  f32 reflective;
+} sphere_t;
+
+typedef enum {
+  LIGHT_TYPE_POINT,
+  LIGHT_TYPE_DIRECTIONAL,
+  LIGHT_TYPE_AMBIENT,
+
+  COUNT_LIGHT_TYPE,
+} light_type_t;
+
+typedef struct {
+  light_type_t type;
+  f32 intensity;
+  union {
+    vec3f_t position;
+    vec3f_t direction;
+  };
+} light_t;
+
+typedef struct {
+  sphere_t *spheres;
+  light_t *lights;
+  u32 spheres_count;
+  u32 lights_count;
+} scene_t;
+
+typedef struct {
+  f32 t1;
+  f32 t2;
+} solutions_t;
+
+typedef struct {
+  f32 closest_t;
+  sphere_t *closest_sphere;
+} intersection_t;
+
+colour_t trace_ray(vec3f_t origin, vec3f_t direction, f32 t_min, f32 t_max,
+                   const scene_t *scene, colour_t default_colour,
+                   u32 recursion_depth);
+
+#endif // !RAYTRACER_H

include/window/window.h

@@ -40,4 +40,7 @@ void swap_buffers(window_t *wnd);
 
 vec3f_t window_to_viewport(window_t *wnd, i32 x, i32 y, vec3f_t viewport);
 
+colour_t colour_add_colour(colour_t a, colour_t b);
+colour_t colour_mul(colour_t colour, f32 scalar);
+
 #endif // !WINDOW_H