fix: improvements, bump to C++20 and fix bugs

2 files changed, 2 insertions, 6 deletions

diff --git a/src/engine/engine.h b/src/engine/engine.h
index 0d0fb1b..124fa39 100644
--- a/src/engine/engine.h
+++ b/src/engine/engine.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <vector>
+#include <numbers>
 #include <iostream>
 #include <fstream>
 #include <sstream>
@@ -21,11 +22,6 @@
 #include <glm/gtc/matrix_transform.hpp>
 #include <glm/gtc/type_ptr.hpp>
 
-#define _USE_MATH_DEFINES
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
 namespace Donut
 {
     const double c = 299792458.0;
diff --git a/src/engine/object.h b/src/engine/object.h
index c45815b..19938d8 100644
--- a/src/engine/object.h
+++ b/src/engine/object.h
@@ -46,7 +46,7 @@ namespace Donut
             float a = glm::dot(ray.m_direction, ray.m_direction); 
             float b = 2.0f * glm::dot(oc, ray.m_direction);
             float c = glm::dot(oc, oc) - m_radius * m_radius;
-            double discriminant = b*b - 4*a*c;
+            float discriminant = static_cast<float>(b*b - 4*a*c);
 
             if(discriminant < 0)
                 return false;