szene mit vier roten kugeln aufgebaut. der renderer unterstuetzt jetzt bis zu 100 objekte

2026-07-26 19:38:52 +02:00
parent 30b7d557d1
commit 76f02ac5c5
5 changed files with 45 additions and 18 deletions
@@ -1,18 +1,36 @@
+#include <stdlib.h>
 #include "structs.h"
 #include "collision.h"
 #include "vectorOp.h"
+#define MAXSPHERES 100

-RGBA raytraceSphere(sphere *obj, ray *lightray) {
-    RGBA pixel;
-    pixel.r = 0;
-    pixel.g = 0;
-    pixel.b = 0;
-    pixel.a = 1;
+RGBA raytraceSphere(sphere **objectList, ray *lightray) {
+    RGBA pixel = (RGBA){0,0,0,1};
+    const int lightBounces = 1;
+    sphere **spheresHitList = (sphere **)calloc( (lightBounces + 1),sizeof(sphere*) );

-    vec3 collisionPoint = collisionPointSphere(lightray, obj);
-    if (collisionPoint.x == -1) {return pixel;}
-    vec3 sphereNormal = vec3Normalize(vec3Subtract(collisionPoint, obj->origin));
-    pixel.r = -vec3Product(sphereNormal, lightray->direction);
+    sphere *nearestSphere = nullptr;
+    vec3 nearestCollisionPoint = {10000,10000,10000};
+    for (int i = 0; i < 100 && objectList[i] != nullptr; i++) {
+        vec3 collisionPoint = collisionPointSphere(lightray, objectList[i]);
+        if (collisionPoint.x == -10000000) {
+
+        }
+        else{
+            if (vec3Length(collisionPoint)< vec3Length(nearestCollisionPoint)) {
+                nearestCollisionPoint = collisionPoint;
+                nearestSphere = objectList[i];
+            }
+
+        }
+    }
+    if (nearestSphere != nullptr) {
+        vec3 sphereNormal = vec3Normalize(vec3Subtract(nearestCollisionPoint, nearestSphere->origin));
+        pixel.r = -vec3Product(sphereNormal, lightray->direction);
+    }
+
+
+    free(spheresHitList);
    return pixel;

 }