selbe checks wie bei sphere (shadowachne und co.) eingebaut und das hat es gefixxt

Collision.c

@@ -44,6 +44,7 @@ vec3 collisionPlane(ray *lightray, plane *object) {
     if (vec3Product(lightray->direction, object->normal) >= 0) return (vec3){-10000000, -10000000, -10000000};
 
     r = vec3Product(object->normal, vec3Subtract(object->origin, lightray->origin)) * 1/(vec3Product(lightray->direction, object->normal));
+    if (r <= 1e-6) return (vec3){-10000000, -10000000, -10000000};
 
     collisionPoint = vec3Add(lightray->origin, vec3Scale(lightray->direction, r));
     return collisionPoint;
@@ -55,6 +56,7 @@ vec3 collisionQuad(ray *lightray, quad *object) {
     collisionPoint = collisionPlane(lightray, &Plane);
 
     if (collisionPoint.x <= -1000000) return collisionPoint;
+    if (epsilonCheck(lightray->origin, collisionPoint) == 0) return (vec3){-10000000, -10000000, -10000000};
 
     vec3 localCollisionPoint = vec3Subtract(collisionPoint, object->origin);
 

raytrace.c

@@ -7,8 +7,8 @@
 #include "helper.h"
 #include <math.h>
 #define epsilon 1e-8
-#define RAYSPERPIXEL 10
+#define RAYSPERPIXEL 100
-#define lightBounces 3
+#define lightBounces 6
 enum objectType {
     SPHERETYPE,
     QUADTYPE