From e4e3bcf5589c2772056a0f0514d92d1215cf2349 Mon Sep 17 00:00:00 2001
From: Tomila Bakeeva <bakeevato99733@th-nuernberg.de>
Date: Sun, 16 Nov 2025 18:15:27 +0100
Subject: [PATCH] Entwickler: gamematrix.cpp implementiert (matmul, translate,
 rot3D)

---
 gamecube.h => includes/gamecube.h     |  0
 gamematrix.h => includes/gamematrix.h |  0
 gamecube.cpp => src/gamecube.cpp      |  0
 src/gamematrix.cpp                    | 97 +++++++++++++++++++++++++++
 main.cpp => src/main.cpp              |  0
 5 files changed, 97 insertions(+)
 rename gamecube.h => includes/gamecube.h (100%)
 rename gamematrix.h => includes/gamematrix.h (100%)
 rename gamecube.cpp => src/gamecube.cpp (100%)
 create mode 100644 src/gamematrix.cpp
 rename main.cpp => src/main.cpp (100%)

diff --git a/gamecube.h b/includes/gamecube.h
similarity index 100%
rename from gamecube.h
rename to includes/gamecube.h
diff --git a/gamematrix.h b/includes/gamematrix.h
similarity index 100%
rename from gamematrix.h
rename to includes/gamematrix.h
diff --git a/gamecube.cpp b/src/gamecube.cpp
similarity index 100%
rename from gamecube.cpp
rename to src/gamecube.cpp
diff --git a/src/gamematrix.cpp b/src/gamematrix.cpp
new file mode 100644
index 0000000..3a20980
--- /dev/null
+++ b/src/gamematrix.cpp
@@ -0,0 +1,97 @@
+//
+// Created by bakee on 03.11.2025.
+//
+#include "gamematrix.h"
+#include <cmath>
+
+namespace Matrix3D
+{
+    Mat4 gameMatrix::identity()
+    {
+        return {{
+            {1.0, 0.0, 0.0, 0.0},
+            {0.0, 1.0, 0.0, 0.0},
+            {0.0, 0.0, 1.0, 0.0},
+            {0.0, 0.0, 0.0, 1.0}
+        }};
+    }
+
+    Mat4 gameMatrix::matmul(const Mat4& A, const Mat4& B)
+    {
+        const int N = 4;
+        Mat4 result = {};
+        for (int i = 0; i < N; ++i)
+        {
+            for (int j = 0; j < N; ++j)
+            {
+                for (int k = 0; k < N; ++k)
+                {
+                    result[i][j] += A[i][k] * B[k][j];
+                }
+            }
+        }
+        return result;
+    }
+
+    Mat4 gameMatrix::translate(const Vec3& pos)
+    {
+        Mat4 result = identity();
+
+        result[0][3] = pos[0]; // x
+        result[1][3] = pos[1]; // y
+        result[2][3] = pos[2]; // z
+
+        return result;
+    }
+
+    Mat4 gameMatrix::rot3D(double angle_deg, char axis)
+    {
+        const double angle_rad = angle_deg * M_PI / 180.0;
+
+        Mat4 result = identity();
+
+        const double c = std::cos(angle_rad);
+        const double s = std::sin(angle_rad);
+
+        switch (axis)
+        {
+            case 'x':
+                result[1][1] = c; result[1][2] = -s;
+                result[2][1] = s; result[2][2] = c;
+                break;
+            case 'y':
+                result[0][0] = c; result[0][2] = s;
+                result[2][0] = -s; result[2][2] = c;
+                break;
+            case 'z':
+                result[0][0] = c; result[0][1] = -s;
+                result[1][0] = s; result[1][1] = c;
+                break;
+            default:
+                break;
+        }
+        return result;
+    }
+
+    Mat4 operator*(const Mat4& A, const Mat4& B)
+    {
+        return gameMatrix::matmul(A, B);
+    }
+
+    Vec3 operator*(const Mat4& m, const Vec3& v)
+    {
+        Vec4 v_hom = {v[0], v[1], v[2], 1.0};
+        Vec4 res_hom = {};
+
+        for (int i = 0; i < 4; ++i)
+        {
+            for (int j = 0; j < 4; ++j)
+            {
+                res_hom[i] += m[i][j] * v_hom[j];
+            }
+        }
+
+        return {res_hom[0], res_hom[1], res_hom[2]};
+    }
+
+}
\ No newline at end of file
diff --git a/main.cpp b/src/main.cpp
similarity index 100%
rename from main.cpp
rename to src/main.cpp