Initial commit for first version of project

GasTankAR/Views/TankAR/Matrix+Array.swift

@@ -0,0 +1,26 @@
+//
+//  Matrix+Array.swift
+//  GasTankAR
+//
+//  Created by Dennis Nemec on 26.08.26.
+//
+
+import simd
+
+extension simd_float4x4 {
+    /// Spaltenweise Darstellung als 16 Floats (für die Persistenz).
+    var floatArray: [Float] {
+        [columns.0, columns.1, columns.2, columns.3].flatMap { [$0.x, $0.y, $0.z, $0.w] }
+    }
+
+    /// Rekonstruiert eine Matrix aus 16 spaltenweisen Floats.
+    init?(floatArray array: [Float]) {
+        guard array.count == 16 else { return nil }
+        self.init(
+            SIMD4(array[0], array[1], array[2], array[3]),
+            SIMD4(array[4], array[5], array[6], array[7]),
+            SIMD4(array[8], array[9], array[10], array[11]),
+            SIMD4(array[12], array[13], array[14], array[15])
+        )
+    }
+}