Updated examples to make them clearer

examples/core_3d_picking.c

@@ -21,7 +21,10 @@ int main()
     InitWindow(screenWidth, screenHeight, "raylib [core] example - 3d picking");
 
     // Define the camera to look into our 3d world
-    Camera camera = {{ 0.0f, 10.0f, 10.0f }, { 0.0f, 0.0f, 0.0f }, { 0.0f, 1.0f, 0.0f }};
+    Camera camera;
+    camera.position = (Vector3){ 0.0f, 10.0f, 10.0f };  // Camera position
+    camera.target = (Vector3){ 0.0f, 0.0f, 0.0f };      // Camera looking at point
+    camera.up = (Vector3){ 0.0f, 1.0f, 0.0f };          // Camera up vector (rotation towards target)
 
     Vector3 cubePosition = { 0.0f, 1.0f, 0.0f };
     Vector3 cubeSize = { 2.0f, 2.0f, 2.0f };