Merge branch 'main' of https://github.com/NicholasBottone/the-all-americans-in-cs1230

merge.

6 files changed, 145 insertions, 59 deletions

diff --git a/cmake-build-release/.ninja_deps b/cmake-build-release/.ninja_deps
index 556592d..de11db3 100644
--- a/cmake-build-release/.ninja_deps
+++ b/cmake-build-release/.ninja_deps
diff --git a/cmake-build-release/.ninja_log b/cmake-build-release/.ninja_log
index a7de02b..bc81a69 100644
--- a/cmake-build-release/.ninja_log
+++ b/cmake-build-release/.ninja_log
@@ -48,3 +48,35 @@
 40	1266	1702501759807107178	CMakeFiles/projects_ray.dir/src/raytracer/raytracer.cpp.o	19b4d88ef40a6db1
 41	1487	1702501760027899537	CMakeFiles/projects_ray.dir/src/accelerate/myqtconcurrent.cpp.o	202e3ecc659447bc
 1487	1599	1702501760143722370	projects_ray	3c6678764a94cd8d
+7	413	1702509386592755000	projects_ray_autogen/timestamp	55fca76aac650d2f
+7	413	1702509386592755000	projects_ray_autogen/mocs_compilation.cpp	55fca76aac650d2f
+7	413	1702509386592755000	/Users/sotech117/Documents/master/graphics/the-all-americans-in-cs1230/cmake-build-release/projects_ray_autogen/timestamp	55fca76aac650d2f
+7	413	1702509386592755000	/Users/sotech117/Documents/master/graphics/the-all-americans-in-cs1230/cmake-build-release/projects_ray_autogen/mocs_compilation.cpp	55fca76aac650d2f
+414	822	1702509387003669825	CMakeFiles/projects_ray.dir/src/camera/camera.cpp.o	ae395a7ba55f31e0
+415	1182	1702509387361931618	CMakeFiles/projects_ray.dir/src/intersect/normals.cpp.o	dc9fbf174942b6a6
+415	1226	1702509387407624206	CMakeFiles/projects_ray.dir/src/intersect/intersect.cpp.o	d2b1593379e5dcda
+413	1271	1702509387451902478	CMakeFiles/projects_ray.dir/projects_ray_autogen/mocs_compilation.cpp.o	1ad68196f2f117c1
+415	1393	1702509387575089739	CMakeFiles/projects_ray.dir/src/raytracer/raytracescene.cpp.o	4a558d7c0ab76c07
+414	1491	1702509387672859633	CMakeFiles/projects_ray.dir/src/mainwindow.cpp.o	8a94e9f3bb65e6ba
+414	1589	1702509387770268697	CMakeFiles/projects_ray.dir/src/main.cpp.o	94fb23c1a8b2c56c
+822	1698	1702509387880477194	CMakeFiles/projects_ray.dir/src/illuminate/illuminate.cpp.o	36fb1526130d4f10
+414	1854	1702509388034733591	CMakeFiles/projects_ray.dir/src/raytracer/raytracer.cpp.o	19b4d88ef40a6db1
+1182	2002	1702509388181841655	CMakeFiles/projects_ray.dir/src/illuminate/shadow.cpp.o	976dc05943374640
+1226	2039	1702509388222133015	CMakeFiles/projects_ray.dir/src/illuminate/reflect.cpp.o	899987bee3f68062
+1271	2113	1702509388293738632	CMakeFiles/projects_ray.dir/src/texture/texture.cpp.o	ee619672f0183b37
+1393	2208	1702509388389985127	CMakeFiles/projects_ray.dir/src/accelerate/myqthreads.cpp.o	1275de63f43c05f3
+1491	2243	1702509388426347658	CMakeFiles/projects_ray.dir/src/utils/raytracerutils.cpp.o	2155c0e78af65352
+1590	2357	1702509388540130864	CMakeFiles/projects_ray.dir/src/aliasing/supersample.cpp.o	856523a4b6d122f7
+1698	2542	1702509388724538906	CMakeFiles/projects_ray.dir/src/aliasing/filter.cpp.o	9dee6d99978c214
+2208	2595	1702509388779495677	CMakeFiles/projects_ray.dir/src/physics/physics.cpp.o	d5828f7344b43f3f
+2002	2826	1702509389008450447	CMakeFiles/projects_ray.dir/src/accelerate/kdtree.cpp.o	cef03b69fda1011b
+2113	2832	1702509389015901692	CMakeFiles/projects_ray.dir/src/vec4ops/rotations4d.cpp.o	cad2614c6119bd5e
+2039	2889	1702509389071962367	CMakeFiles/projects_ray.dir/src/accelerate/bvh.cpp.o	58a267a27bf597a8
+1854	3366	1702509389547766696	CMakeFiles/projects_ray.dir/src/accelerate/myqtconcurrent.cpp.o	202e3ecc659447bc
+3366	3478	1702509389663076967	projects_ray	3c6678764a94cd8d
+7	35	1702509771251530097	projects_ray_autogen/timestamp	55fca76aac650d2f
+7	35	1702509771251530097	projects_ray_autogen/mocs_compilation.cpp	55fca76aac650d2f
+7	35	1702509771251530097	/Users/sotech117/Documents/master/graphics/the-all-americans-in-cs1230/cmake-build-release/projects_ray_autogen/timestamp	55fca76aac650d2f
+7	35	1702509771251530097	/Users/sotech117/Documents/master/graphics/the-all-americans-in-cs1230/cmake-build-release/projects_ray_autogen/mocs_compilation.cpp	55fca76aac650d2f
+41	908	1702509772121285840	CMakeFiles/projects_ray.dir/src/mainwindow.cpp.o	8a94e9f3bb65e6ba
+908	1018	1702509772233708395	projects_ray	3c6678764a94cd8d
diff --git a/cmake-build-release/Testing/Temporary/LastTest.log b/cmake-build-release/Testing/Temporary/LastTest.log
index e77e449..0531d65 100644
--- a/cmake-build-release/Testing/Temporary/LastTest.log
+++ b/cmake-build-release/Testing/Temporary/LastTest.log
@@ -1,3 +1,3 @@
-Start testing: Dec 13 16:37 EST
+Start testing: Dec 13 18:23 EST
 ----------------------------------------------------------
-End testing: Dec 13 16:37 EST
+End testing: Dec 13 18:23 EST
diff --git a/cmake-build-release/projects_ray b/cmake-build-release/projects_ray
index f6b775f..ec64ba5 100755
--- a/cmake-build-release/projects_ray
+++ b/cmake-build-release/projects_ray
diff --git a/cmake-build-release/projects_ray_autogen/SKZFJBACJG/moc_raytracer.cpp b/cmake-build-release/projects_ray_autogen/SKZFJBACJG/moc_raytracer.cpp
index 2b1fe61..e75ea55 100644
--- a/cmake-build-release/projects_ray_autogen/SKZFJBACJG/moc_raytracer.cpp
+++ b/cmake-build-release/projects_ray_autogen/SKZFJBACJG/moc_raytracer.cpp
@@ -51,11 +51,12 @@ static constexpr auto qt_meta_stringdata_CLASSRayTracerENDCLASS = QtMocHelpers::
     "rotationChanged",
     "cameraPositionChanged",
     "glm::vec3",
-    "timeValueChanged"
+    "timeValueChanged",
+    "zChanged"
 );
 #else  // !QT_MOC_HAS_STRING_DATA
 struct qt_meta_stringdata_CLASSRayTracerENDCLASS_t {
-    uint offsetsAndSizes[26];
+    uint offsetsAndSizes[28];
     char stringdata0[10];
     char stringdata1[18];
     char stringdata2[1];
@@ -69,6 +70,7 @@ struct qt_meta_stringdata_CLASSRayTracerENDCLASS_t {
     char stringdata10[22];
     char stringdata11[10];
     char stringdata12[17];
+    char stringdata13[9];
 };
 #define QT_MOC_LITERAL(ofs, len) \
     uint(sizeof(qt_meta_stringdata_CLASSRayTracerENDCLASS_t::offsetsAndSizes) + ofs), len 
@@ -86,7 +88,8 @@ Q_CONSTINIT static const qt_meta_stringdata_CLASSRayTracerENDCLASS_t qt_meta_str
         QT_MOC_LITERAL(125, 15),  // "rotationChanged"
         QT_MOC_LITERAL(141, 21),  // "cameraPositionChanged"
         QT_MOC_LITERAL(163, 9),  // "glm::vec3"
-        QT_MOC_LITERAL(173, 16)   // "timeValueChanged"
+        QT_MOC_LITERAL(173, 16),  // "timeValueChanged"
+        QT_MOC_LITERAL(190, 8)   // "zChanged"
     },
     "RayTracer",
     "xyRotationChanged",
@@ -100,7 +103,8 @@ Q_CONSTINIT static const qt_meta_stringdata_CLASSRayTracerENDCLASS_t qt_meta_str
     "rotationChanged",
     "cameraPositionChanged",
     "glm::vec3",
-    "timeValueChanged"
+    "timeValueChanged",
+    "zChanged"
 };
 #undef QT_MOC_LITERAL
 #endif // !QT_MOC_HAS_STRING_DATA
@@ -112,23 +116,24 @@ Q_CONSTINIT static const uint qt_meta_data_CLASSRayTracerENDCLASS[] = {
       11,       // revision
        0,       // classname
        0,    0, // classinfo
-       9,   14, // methods
+      10,   14, // methods
        0,    0, // properties
        0,    0, // enums/sets
        0,    0, // constructors
        0,       // flags
-       9,       // signalCount
+      10,       // signalCount
 
  // signals: name, argc, parameters, tag, flags, initial metatype offsets
-       1,    1,   68,    2, 0x06,    1 /* Public */,
-       4,    1,   71,    2, 0x06,    3 /* Public */,
-       5,    1,   74,    2, 0x06,    5 /* Public */,
-       6,    1,   77,    2, 0x06,    7 /* Public */,
-       7,    1,   80,    2, 0x06,    9 /* Public */,
-       8,    1,   83,    2, 0x06,   11 /* Public */,
-       9,    1,   86,    2, 0x06,   13 /* Public */,
-      10,    1,   89,    2, 0x06,   15 /* Public */,
-      12,    1,   92,    2, 0x06,   17 /* Public */,
+       1,    1,   74,    2, 0x06,    1 /* Public */,
+       4,    1,   77,    2, 0x06,    3 /* Public */,
+       5,    1,   80,    2, 0x06,    5 /* Public */,
+       6,    1,   83,    2, 0x06,    7 /* Public */,
+       7,    1,   86,    2, 0x06,    9 /* Public */,
+       8,    1,   89,    2, 0x06,   11 /* Public */,
+       9,    1,   92,    2, 0x06,   13 /* Public */,
+      10,    1,   95,    2, 0x06,   15 /* Public */,
+      12,    1,   98,    2, 0x06,   17 /* Public */,
+      13,    1,  101,    2, 0x06,   19 /* Public */,
 
  // signals: parameters
     QMetaType::Void, QMetaType::Float,    3,
@@ -140,6 +145,7 @@ Q_CONSTINIT static const uint qt_meta_data_CLASSRayTracerENDCLASS[] = {
     QMetaType::Void, QMetaType::Float,    3,
     QMetaType::Void, 0x80000000 | 11,    3,
     QMetaType::Void, QMetaType::Int,    3,
+    QMetaType::Void, QMetaType::Int,    3,
 
        0        // eod
 };
@@ -179,6 +185,9 @@ Q_CONSTINIT const QMetaObject RayTracer::staticMetaObject = { {
         QtPrivate::TypeAndForceComplete<glm::vec3, std::false_type>,
         // method 'timeValueChanged'
         QtPrivate::TypeAndForceComplete<void, std::false_type>,
+        QtPrivate::TypeAndForceComplete<int, std::false_type>,
+        // method 'zChanged'
+        QtPrivate::TypeAndForceComplete<void, std::false_type>,
         QtPrivate::TypeAndForceComplete<int, std::false_type>
     >,
     nullptr
@@ -199,6 +208,7 @@ void RayTracer::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id, v
         case 6: _t->rotationChanged((*reinterpret_cast< std::add_pointer_t<float>>(_a[1]))); break;
         case 7: _t->cameraPositionChanged((*reinterpret_cast< std::add_pointer_t<glm::vec3>>(_a[1]))); break;
         case 8: _t->timeValueChanged((*reinterpret_cast< std::add_pointer_t<int>>(_a[1]))); break;
+        case 9: _t->zChanged((*reinterpret_cast< std::add_pointer_t<int>>(_a[1]))); break;
         default: ;
         }
     } else if (_c == QMetaObject::IndexOfMethod) {
@@ -266,6 +276,13 @@ void RayTracer::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id, v
                 return;
             }
         }
+        {
+            using _t = void (RayTracer::*)(int );
+            if (_t _q_method = &RayTracer::zChanged; *reinterpret_cast<_t *>(_a[1]) == _q_method) {
+                *result = 9;
+                return;
+            }
+        }
     }
 }
 
@@ -288,13 +305,13 @@ int RayTracer::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
     if (_id < 0)
         return _id;
     if (_c == QMetaObject::InvokeMetaMethod) {
-        if (_id < 9)
+        if (_id < 10)
             qt_static_metacall(this, _c, _id, _a);
-        _id -= 9;
+        _id -= 10;
     } else if (_c == QMetaObject::RegisterMethodArgumentMetaType) {
-        if (_id < 9)
+        if (_id < 10)
             *reinterpret_cast<QMetaType *>(_a[0]) = QMetaType();
-        _id -= 9;
+        _id -= 10;
     }
     return _id;
 }
@@ -361,4 +378,11 @@ void RayTracer::timeValueChanged(int _t1)
     void *_a[] = { nullptr, const_cast<void*>(reinterpret_cast<const void*>(std::addressof(_t1))) };
     QMetaObject::activate(this, &staticMetaObject, 8, _a);
 }
+
+// SIGNAL 9
+void RayTracer::zChanged(int _t1)
+{
+    void *_a[] = { nullptr, const_cast<void*>(reinterpret_cast<const void*>(std::addressof(_t1))) };
+    QMetaObject::activate(this, &staticMetaObject, 9, _a);
+}
 QT_WARNING_POP
diff --git a/cmake-build-release/projects_ray_autogen/UVLADIE3JM/moc_mainwindow.cpp b/cmake-build-release/projects_ray_autogen/UVLADIE3JM/moc_mainwindow.cpp
index 584c51b..fe752ea 100644
--- a/cmake-build-release/projects_ray_autogen/UVLADIE3JM/moc_mainwindow.cpp
+++ b/cmake-build-release/projects_ray_autogen/UVLADIE3JM/moc_mainwindow.cpp
@@ -69,11 +69,14 @@ static constexpr auto qt_meta_stringdata_CLASSMainWindowENDCLASS = QtMocHelpers:
     "updateRotationSlider",
     "onValChangeWSlider",
     "onValChangeWBox",
-    "updateTimeValue"
+    "updateTimeValue",
+    "onValChangezSlider",
+    "onValChangezBox",
+    "updateZSlider"
 );
 #else  // !QT_MOC_HAS_STRING_DATA
 struct qt_meta_stringdata_CLASSMainWindowENDCLASS_t {
-    uint offsetsAndSizes[62];
+    uint offsetsAndSizes[68];
     char stringdata0[11];
     char stringdata1[13];
     char stringdata2[1];
@@ -105,6 +108,9 @@ struct qt_meta_stringdata_CLASSMainWindowENDCLASS_t {
     char stringdata28[19];
     char stringdata29[16];
     char stringdata30[16];
+    char stringdata31[19];
+    char stringdata32[16];
+    char stringdata33[14];
 };
 #define QT_MOC_LITERAL(ofs, len) \
     uint(sizeof(qt_meta_stringdata_CLASSMainWindowENDCLASS_t::offsetsAndSizes) + ofs), len 
@@ -140,7 +146,10 @@ Q_CONSTINIT static const qt_meta_stringdata_CLASSMainWindowENDCLASS_t qt_meta_st
         QT_MOC_LITERAL(435, 20),  // "updateRotationSlider"
         QT_MOC_LITERAL(456, 18),  // "onValChangeWSlider"
         QT_MOC_LITERAL(475, 15),  // "onValChangeWBox"
-        QT_MOC_LITERAL(491, 15)   // "updateTimeValue"
+        QT_MOC_LITERAL(491, 15),  // "updateTimeValue"
+        QT_MOC_LITERAL(507, 18),  // "onValChangezSlider"
+        QT_MOC_LITERAL(526, 15),  // "onValChangezBox"
+        QT_MOC_LITERAL(542, 13)   // "updateZSlider"
     },
     "MainWindow",
     "onUploadFile",
@@ -172,7 +181,10 @@ Q_CONSTINIT static const qt_meta_stringdata_CLASSMainWindowENDCLASS_t qt_meta_st
     "updateRotationSlider",
     "onValChangeWSlider",
     "onValChangeWBox",
-    "updateTimeValue"
+    "updateTimeValue",
+    "onValChangezSlider",
+    "onValChangezBox",
+    "updateZSlider"
 };
 #undef QT_MOC_LITERAL
 #endif // !QT_MOC_HAS_STRING_DATA
@@ -184,7 +196,7 @@ Q_CONSTINIT static const uint qt_meta_data_CLASSMainWindowENDCLASS[] = {
       11,       // revision
        0,       // classname
        0,    0, // classinfo
-      28,   14, // methods
+      31,   14, // methods
        0,    0, // properties
        0,    0, // enums/sets
        0,    0, // constructors
@@ -192,34 +204,37 @@ Q_CONSTINIT static const uint qt_meta_data_CLASSMainWindowENDCLASS[] = {
        0,       // signalCount
 
  // slots: name, argc, parameters, tag, flags, initial metatype offsets
-       1,    0,  182,    2, 0x08,    1 /* Private */,
-       3,    0,  183,    2, 0x08,    2 /* Private */,
-       4,    0,  184,    2, 0x08,    3 /* Private */,
-       5,    1,  185,    2, 0x08,    4 /* Private */,
-       7,    1,  188,    2, 0x08,    6 /* Private */,
-       8,    1,  191,    2, 0x08,    8 /* Private */,
-       9,    1,  194,    2, 0x08,   10 /* Private */,
-      10,    1,  197,    2, 0x08,   12 /* Private */,
-      11,    1,  200,    2, 0x08,   14 /* Private */,
-      12,    1,  203,    2, 0x08,   16 /* Private */,
-      13,    1,  206,    2, 0x08,   18 /* Private */,
-      14,    1,  209,    2, 0x08,   20 /* Private */,
-      15,    1,  212,    2, 0x08,   22 /* Private */,
-      16,    1,  215,    2, 0x08,   24 /* Private */,
-      17,    1,  218,    2, 0x08,   26 /* Private */,
-      18,    1,  221,    2, 0x08,   28 /* Private */,
-      19,    1,  224,    2, 0x08,   30 /* Private */,
-      20,    0,  227,    2, 0x08,   32 /* Private */,
-      21,    1,  228,    2, 0x08,   33 /* Private */,
-      22,    1,  231,    2, 0x08,   35 /* Private */,
-      23,    1,  234,    2, 0x08,   37 /* Private */,
-      24,    1,  237,    2, 0x08,   39 /* Private */,
-      25,    1,  240,    2, 0x08,   41 /* Private */,
-      26,    1,  243,    2, 0x08,   43 /* Private */,
-      27,    1,  246,    2, 0x08,   45 /* Private */,
-      28,    1,  249,    2, 0x08,   47 /* Private */,
-      29,    1,  252,    2, 0x08,   49 /* Private */,
-      30,    0,  255,    2, 0x08,   51 /* Private */,
+       1,    0,  200,    2, 0x08,    1 /* Private */,
+       3,    0,  201,    2, 0x08,    2 /* Private */,
+       4,    0,  202,    2, 0x08,    3 /* Private */,
+       5,    1,  203,    2, 0x08,    4 /* Private */,
+       7,    1,  206,    2, 0x08,    6 /* Private */,
+       8,    1,  209,    2, 0x08,    8 /* Private */,
+       9,    1,  212,    2, 0x08,   10 /* Private */,
+      10,    1,  215,    2, 0x08,   12 /* Private */,
+      11,    1,  218,    2, 0x08,   14 /* Private */,
+      12,    1,  221,    2, 0x08,   16 /* Private */,
+      13,    1,  224,    2, 0x08,   18 /* Private */,
+      14,    1,  227,    2, 0x08,   20 /* Private */,
+      15,    1,  230,    2, 0x08,   22 /* Private */,
+      16,    1,  233,    2, 0x08,   24 /* Private */,
+      17,    1,  236,    2, 0x08,   26 /* Private */,
+      18,    1,  239,    2, 0x08,   28 /* Private */,
+      19,    1,  242,    2, 0x08,   30 /* Private */,
+      20,    0,  245,    2, 0x08,   32 /* Private */,
+      21,    1,  246,    2, 0x08,   33 /* Private */,
+      22,    1,  249,    2, 0x08,   35 /* Private */,
+      23,    1,  252,    2, 0x08,   37 /* Private */,
+      24,    1,  255,    2, 0x08,   39 /* Private */,
+      25,    1,  258,    2, 0x08,   41 /* Private */,
+      26,    1,  261,    2, 0x08,   43 /* Private */,
+      27,    1,  264,    2, 0x08,   45 /* Private */,
+      28,    1,  267,    2, 0x08,   47 /* Private */,
+      29,    1,  270,    2, 0x08,   49 /* Private */,
+      30,    0,  273,    2, 0x08,   51 /* Private */,
+      31,    1,  274,    2, 0x08,   52 /* Private */,
+      32,    1,  277,    2, 0x08,   54 /* Private */,
+      33,    1,  280,    2, 0x08,   56 /* Private */,
 
  // slots: parameters
     QMetaType::Void,
@@ -250,6 +265,9 @@ Q_CONSTINIT static const uint qt_meta_data_CLASSMainWindowENDCLASS[] = {
     QMetaType::Void, QMetaType::Int,    6,
     QMetaType::Void, QMetaType::Double,    6,
     QMetaType::Void,
+    QMetaType::Void, QMetaType::Int,    6,
+    QMetaType::Void, QMetaType::Double,    6,
+    QMetaType::Void, QMetaType::Double,    6,
 
        0        // eod
 };
@@ -341,7 +359,16 @@ Q_CONSTINIT const QMetaObject MainWindow::staticMetaObject = { {
         QtPrivate::TypeAndForceComplete<void, std::false_type>,
         QtPrivate::TypeAndForceComplete<double, std::false_type>,
         // method 'updateTimeValue'
-        QtPrivate::TypeAndForceComplete<void, std::false_type>
+        QtPrivate::TypeAndForceComplete<void, std::false_type>,
+        // method 'onValChangezSlider'
+        QtPrivate::TypeAndForceComplete<void, std::false_type>,
+        QtPrivate::TypeAndForceComplete<int, std::false_type>,
+        // method 'onValChangezBox'
+        QtPrivate::TypeAndForceComplete<void, std::false_type>,
+        QtPrivate::TypeAndForceComplete<double, std::false_type>,
+        // method 'updateZSlider'
+        QtPrivate::TypeAndForceComplete<void, std::false_type>,
+        QtPrivate::TypeAndForceComplete<double, std::false_type>
     >,
     nullptr
 } };
@@ -380,6 +407,9 @@ void MainWindow::qt_static_metacall(QObject *_o, QMetaObject::Call _c, int _id,
         case 25: _t->onValChangeWSlider((*reinterpret_cast< std::add_pointer_t<int>>(_a[1]))); break;
         case 26: _t->onValChangeWBox((*reinterpret_cast< std::add_pointer_t<double>>(_a[1]))); break;
         case 27: _t->updateTimeValue(); break;
+        case 28: _t->onValChangezSlider((*reinterpret_cast< std::add_pointer_t<int>>(_a[1]))); break;
+        case 29: _t->onValChangezBox((*reinterpret_cast< std::add_pointer_t<double>>(_a[1]))); break;
+        case 30: _t->updateZSlider((*reinterpret_cast< std::add_pointer_t<double>>(_a[1]))); break;
         default: ;
         }
     }
@@ -404,13 +434,13 @@ int MainWindow::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
     if (_id < 0)
         return _id;
     if (_c == QMetaObject::InvokeMetaMethod) {
-        if (_id < 28)
+        if (_id < 31)
             qt_static_metacall(this, _c, _id, _a);
-        _id -= 28;
+        _id -= 31;
     } else if (_c == QMetaObject::RegisterMethodArgumentMetaType) {
-        if (_id < 28)
+        if (_id < 31)
             *reinterpret_cast<QMetaType *>(_a[0]) = QMetaType();
-        _id -= 28;
+        _id -= 31;
     }
     return _id;
 }