From 4914f8eb717f2883478b6f3d43a3f04e7db0c8a0 Mon Sep 17 00:00:00 2001
From: Abdelrahman <said.abdelrahman89@gmail.com>
Date: Sun, 4 Feb 2024 00:20:54 +0000
Subject: [PATCH] Define custom EPSILON

---
 src/raytracer/main.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/raytracer/main.c b/src/raytracer/main.c
index 2f2a4ad..1d4b455 100644
--- a/src/raytracer/main.c
+++ b/src/raytracer/main.c
@@ -2,13 +2,14 @@
 #include "vector/vec.h"
 #include "window/window.h"
 #include <SDL2/SDL_events.h>
-#include <float.h>
 #include <math.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 
+#define EPSILON 0.001f
+
 #define ARR_LEN(ARR) sizeof(ARR) / sizeof(ARR[0])
 
 typedef struct {
@@ -283,7 +284,7 @@ f32 compute_lighting(vec3f_t position, vec3f_t surface_normal,
       I += light.intensity;
     } else {
       vec3f_t light_direction = {0};
-      f32 t_max = FLT_EPSILON;
+      f32 t_max = EPSILON;
 
       switch (light.type) {
       case LIGHT_TYPE_POINT:
@@ -299,7 +300,7 @@ f32 compute_lighting(vec3f_t position, vec3f_t surface_normal,
       }
 
       intersection_t shadow = find_closest_intersection(
-          position, light_direction, 0.001f, t_max, scene);
+          position, light_direction, EPSILON, t_max, scene);
       if (shadow.closest_sphere != NULL) {
         continue;
       }