only reflections

Collision.c

@@ -17,12 +17,14 @@ vec3 collisionPointSphere(ray *lightray, sphere *object)
     if (discriminant < 0) return collisionPoint;
     if (discriminant > 0) {
         double S = (-b - sqrt(discriminant)) / (2 * a);
+        if (S < 0) return collisionPoint;
         collisionPoint.x = S * lightray->direction.x + lightray->origin.x;
         collisionPoint.y = S * lightray->direction.y + lightray->origin.y;
         collisionPoint.z = S * lightray->direction.z + lightray->origin.z;
         return collisionPoint;
     }
     double S = (-b)/(2*a);
+    if (S < 0) return collisionPoint;
     collisionPoint.x = S * lightray->direction.x + lightray->origin.x;
     collisionPoint.y = S * lightray->direction.y + lightray->origin.y;
     collisionPoint.z = S * lightray->direction.z + lightray->origin.z;

raytrace.c

@@ -37,15 +37,14 @@ RGBA raytraceSphere(sphere **objectList, ray *lightray) {
             lightray->origin = nearestCollisionPoint;
         }
         else {
-            sphereNormal = (vec3){0,0,0};
+            sphereNormal = (vec3){1,1,1};
         }
     }
 
-    if (nearestSphere != nullptr)
-    {
+
         //pixel.r = -vec3Product(sphereNormal, lightray->direction);
         pixel = (RGBA){1 - 0.5 *( sphereNormal.x + 1), 1 - 0.5 * (sphereNormal.y +1), 1 -0.5* (sphereNormal.z + 1),1};
-    }
+
     free(spheresHitList);
     return pixel;