From e179abd8d9cf9d6c75d41b2dadb4de23737c4b7e Mon Sep 17 00:00:00 2001
From: linkse100241 <linkse100241@th-nuernberg.de>
Date: Sun, 16 Nov 2025 16:48:17 +0100
Subject: [PATCH] tests.cpp update

---
 src/tests.cpp | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/src/tests.cpp b/src/tests.cpp
index 8b13789..4a62360 100644
--- a/src/tests.cpp
+++ b/src/tests.cpp
@@ -1 +1,41 @@
+#include <iostream>
+#include <array>
+#include <cassert>
+#include <cmath>
+#include "gamematrix.h"
 
+// Matrix-Vektor Multiplikation (4x4 Matrix auf 4D Vektor anwenden)
+std::array<double, 4> matVecMul(const std::array<std::array<double, 4>, 4>& mat, const std::array<double, 4>& vec) {
+    std::array<double, 4> result = {0, 0, 0, 0};
+    for (size_t i = 0; i < 4; ++i) {
+        for (size_t j = 0; j < 4; ++j) {
+            result[i] += mat[i][j] * vec[j];
+        }
+    }
+    return result;
+}
+
+void test_rotateZ() {
+    std::array<double, 4> v = {1, 0, 0, 1};  // Der Vektor (1, 0, 0) wird zu (1, 0, 0, 1)
+
+    // Rotationsmatrix um 90° um die Z-Achse
+    auto R = gameMatrix::rot3D(90, 'Z');
+
+    // Vektor mit der Matrix multiplizieren
+    std::array<double, 4> result = matVecMul(R, v);
+
+    // Erwartetes Ergebnis
+    std::array<double, 4> expected_result = {0, 1, 0, 1};
+
+    // Vergleich der Ergebnisse
+    for (size_t i = 0; i < 4; ++i) {
+        assert(std::abs(result[i] - expected_result[i]) < 1e-6);
+    }
+
+    std::cout << "Test erfolgreich! Rotation um Z-Achse funktioniert." << std::endl;
+}
+
+int main() {
+    test_rotateZ();
+    return 0;
+}