NON WORKING

absoluter clutter beim versuch quads zu implementieren. refactor absolut noetig

Collision.c

@@ -1,6 +1,7 @@
 #include "structs.h"
 #include "math.h"
 #include "helper.h"
+#include "vectorOp.h"
 
 vec3 collisionPointSphere(ray *lightray, sphere *object)
 {
@@ -34,4 +35,30 @@ vec3 collisionPointSphere(ray *lightray, sphere *object)
     collisionPoint.y = S * lightray->direction.y + lightray->origin.y;
     collisionPoint.z = S * lightray->direction.z + lightray->origin.z;
     return collisionPoint;
+}
+
+vec3 collisionPlane(ray *lightray, plane *object) {
+    vec3 collisionPoint;
+    double r;
+
+    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));
+
+    collisionPoint = vec3Add(lightray->origin, vec3Scale(lightray->direction, r));
+    return collisionPoint;
+}
+
+vec3 collisionQuad(ray *lightray, quad *object) {
+    vec3 collisionPoint;
+    vec3 corner = vec3Add(vec3Add(object->v1, object->v2),object->origin);
+    plane Plane = (plane){object->origin, object->normal};
+    collisionPoint = collisionPlane(lightray, &Plane);
+
+    if (collisionPoint.x < corner.x && collisionPoint.y < corner.y && collisionPoint.z < corner.z && collisionPoint.x > object->origin.x && collisionPoint.y > object->origin.y && collisionPoint.z > object->origin.z) {
+        return collisionPoint;
+    }
+    return (vec3){-10000000, -10000000, -10000000};
+
+
 }