diff --git a/Gui.py b/Gui.py
index fd264eb..704c271 100644
--- a/Gui.py
+++ b/Gui.py
@@ -24,14 +24,14 @@ class Ui_fluencyCAD(object):
     def setupUi(self, fluencyCAD):
         if not fluencyCAD.objectName():
             fluencyCAD.setObjectName(u"fluencyCAD")
-        fluencyCAD.resize(1755, 685)
+        fluencyCAD.resize(2214, 803)
         self.centralwidget = QWidget(fluencyCAD)
         self.centralwidget.setObjectName(u"centralwidget")
         self.gridLayout = QGridLayout(self.centralwidget)
         self.gridLayout.setObjectName(u"gridLayout")
         self.InputTab = QTabWidget(self.centralwidget)
         self.InputTab.setObjectName(u"InputTab")
-        sizePolicy = QSizePolicy(QSizePolicy.MinimumExpanding, QSizePolicy.Preferred)
+        sizePolicy = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Preferred)
         sizePolicy.setHorizontalStretch(0)
         sizePolicy.setVerticalStretch(0)
         sizePolicy.setHeightForWidth(self.InputTab.sizePolicy().hasHeightForWidth())
@@ -79,61 +79,15 @@ class Ui_fluencyCAD(object):
 
         self.InputTab.addTab(self.code_tab, "")
 
-        self.gridLayout.addWidget(self.InputTab, 0, 2, 8, 1)
-
-        self.groupBox = QGroupBox(self.centralwidget)
-        self.groupBox.setObjectName(u"groupBox")
-        self.gridLayout_3 = QGridLayout(self.groupBox)
-        self.gridLayout_3.setObjectName(u"gridLayout_3")
-        self.pb_extrdop = QPushButton(self.groupBox)
-        self.pb_extrdop.setObjectName(u"pb_extrdop")
-
-        self.gridLayout_3.addWidget(self.pb_extrdop, 0, 0, 1, 1)
-
-        self.pb_cutop = QPushButton(self.groupBox)
-        self.pb_cutop.setObjectName(u"pb_cutop")
-
-        self.gridLayout_3.addWidget(self.pb_cutop, 0, 1, 1, 1)
-
-        self.pb_arrayop = QPushButton(self.groupBox)
-        self.pb_arrayop.setObjectName(u"pb_arrayop")
-
-        self.gridLayout_3.addWidget(self.pb_arrayop, 1, 0, 1, 1)
-
-        self.pb_revop = QPushButton(self.groupBox)
-        self.pb_revop.setObjectName(u"pb_revop")
-
-        self.gridLayout_3.addWidget(self.pb_revop, 1, 1, 1, 1)
-
-
-        self.gridLayout.addWidget(self.groupBox, 0, 5, 7, 1, Qt.AlignTop)
-
-        self.gl_box = QGroupBox(self.centralwidget)
-        self.gl_box.setObjectName(u"gl_box")
-        sizePolicy1 = QSizePolicy(QSizePolicy.MinimumExpanding, QSizePolicy.MinimumExpanding)
-        sizePolicy1.setHorizontalStretch(0)
-        sizePolicy1.setVerticalStretch(4)
-        sizePolicy1.setHeightForWidth(self.gl_box.sizePolicy().hasHeightForWidth())
-        self.gl_box.setSizePolicy(sizePolicy1)
-        font = QFont()
-        font.setPointSize(12)
-        self.gl_box.setFont(font)
-        self.horizontalLayout_4 = QHBoxLayout(self.gl_box)
-#ifndef Q_OS_MAC
-        self.horizontalLayout_4.setSpacing(-1)
-#endif
-        self.horizontalLayout_4.setObjectName(u"horizontalLayout_4")
-        self.horizontalLayout_4.setContentsMargins(12, -1, -1, -1)
-
-        self.gridLayout.addWidget(self.gl_box, 0, 4, 8, 1)
+        self.gridLayout.addWidget(self.InputTab, 0, 2, 11, 1)
 
         self.groupBox_5 = QGroupBox(self.centralwidget)
         self.groupBox_5.setObjectName(u"groupBox_5")
-        sizePolicy2 = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
-        sizePolicy2.setHorizontalStretch(0)
-        sizePolicy2.setVerticalStretch(0)
-        sizePolicy2.setHeightForWidth(self.groupBox_5.sizePolicy().hasHeightForWidth())
-        self.groupBox_5.setSizePolicy(sizePolicy2)
+        sizePolicy1 = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
+        sizePolicy1.setHorizontalStretch(0)
+        sizePolicy1.setVerticalStretch(0)
+        sizePolicy1.setHeightForWidth(self.groupBox_5.sizePolicy().hasHeightForWidth())
+        self.groupBox_5.setSizePolicy(sizePolicy1)
         self.groupBox_5.setMaximumSize(QSize(300, 16777215))
         self.verticalLayout_3 = QVBoxLayout(self.groupBox_5)
         self.verticalLayout_3.setObjectName(u"verticalLayout_3")
@@ -145,11 +99,11 @@ class Ui_fluencyCAD(object):
 
         self.groupBox_6 = QGroupBox(self.groupBox_5)
         self.groupBox_6.setObjectName(u"groupBox_6")
-        sizePolicy3 = QSizePolicy(QSizePolicy.Preferred, QSizePolicy.Preferred)
-        sizePolicy3.setHorizontalStretch(0)
-        sizePolicy3.setVerticalStretch(0)
-        sizePolicy3.setHeightForWidth(self.groupBox_6.sizePolicy().hasHeightForWidth())
-        self.groupBox_6.setSizePolicy(sizePolicy3)
+        sizePolicy2 = QSizePolicy(QSizePolicy.Preferred, QSizePolicy.Preferred)
+        sizePolicy2.setHorizontalStretch(0)
+        sizePolicy2.setVerticalStretch(0)
+        sizePolicy2.setHeightForWidth(self.groupBox_6.sizePolicy().hasHeightForWidth())
+        self.groupBox_6.setSizePolicy(sizePolicy2)
         self.gridLayout_6 = QGridLayout(self.groupBox_6)
         self.gridLayout_6.setObjectName(u"gridLayout_6")
         self.gridLayout_6.setContentsMargins(2, 2, 2, 2)
@@ -179,8 +133,8 @@ class Ui_fluencyCAD(object):
 
         self.groupBox_8 = QGroupBox(self.groupBox_5)
         self.groupBox_8.setObjectName(u"groupBox_8")
-        sizePolicy3.setHeightForWidth(self.groupBox_8.sizePolicy().hasHeightForWidth())
-        self.groupBox_8.setSizePolicy(sizePolicy3)
+        sizePolicy2.setHeightForWidth(self.groupBox_8.sizePolicy().hasHeightForWidth())
+        self.groupBox_8.setSizePolicy(sizePolicy2)
         self.gridLayout_8 = QGridLayout(self.groupBox_8)
         self.gridLayout_8.setObjectName(u"gridLayout_8")
         self.gridLayout_8.setContentsMargins(2, 2, 2, 2)
@@ -203,7 +157,7 @@ class Ui_fluencyCAD(object):
         self.verticalLayout_3.addWidget(self.groupBox_8)
 
 
-        self.gridLayout.addWidget(self.groupBox_5, 0, 3, 8, 1)
+        self.gridLayout.addWidget(self.groupBox_5, 0, 3, 11, 1)
 
         self.groupBox_4 = QGroupBox(self.centralwidget)
         self.groupBox_4.setObjectName(u"groupBox_4")
@@ -215,7 +169,53 @@ class Ui_fluencyCAD(object):
         self.verticalLayout_2.addWidget(self.pushButton_2)
 
 
-        self.gridLayout.addWidget(self.groupBox_4, 7, 5, 1, 1)
+        self.gridLayout.addWidget(self.groupBox_4, 10, 5, 1, 1)
+
+        self.gl_box = QGroupBox(self.centralwidget)
+        self.gl_box.setObjectName(u"gl_box")
+        sizePolicy3 = QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
+        sizePolicy3.setHorizontalStretch(0)
+        sizePolicy3.setVerticalStretch(4)
+        sizePolicy3.setHeightForWidth(self.gl_box.sizePolicy().hasHeightForWidth())
+        self.gl_box.setSizePolicy(sizePolicy3)
+        font = QFont()
+        font.setPointSize(12)
+        self.gl_box.setFont(font)
+        self.horizontalLayout_4 = QHBoxLayout(self.gl_box)
+#ifndef Q_OS_MAC
+        self.horizontalLayout_4.setSpacing(-1)
+#endif
+        self.horizontalLayout_4.setObjectName(u"horizontalLayout_4")
+        self.horizontalLayout_4.setContentsMargins(12, -1, -1, -1)
+
+        self.gridLayout.addWidget(self.gl_box, 0, 4, 11, 1)
+
+        self.groupBox = QGroupBox(self.centralwidget)
+        self.groupBox.setObjectName(u"groupBox")
+        self.gridLayout_3 = QGridLayout(self.groupBox)
+        self.gridLayout_3.setObjectName(u"gridLayout_3")
+        self.pb_extrdop = QPushButton(self.groupBox)
+        self.pb_extrdop.setObjectName(u"pb_extrdop")
+
+        self.gridLayout_3.addWidget(self.pb_extrdop, 0, 0, 1, 1)
+
+        self.pb_cutop = QPushButton(self.groupBox)
+        self.pb_cutop.setObjectName(u"pb_cutop")
+
+        self.gridLayout_3.addWidget(self.pb_cutop, 0, 1, 1, 1)
+
+        self.pb_arrayop = QPushButton(self.groupBox)
+        self.pb_arrayop.setObjectName(u"pb_arrayop")
+
+        self.gridLayout_3.addWidget(self.pb_arrayop, 1, 0, 1, 1)
+
+        self.pb_revop = QPushButton(self.groupBox)
+        self.pb_revop.setObjectName(u"pb_revop")
+
+        self.gridLayout_3.addWidget(self.pb_revop, 1, 1, 1, 1)
+
+
+        self.gridLayout.addWidget(self.groupBox, 0, 5, 10, 1, Qt.AlignTop)
 
         self.groupBox_9 = QGroupBox(self.centralwidget)
         self.groupBox_9.setObjectName(u"groupBox_9")
@@ -236,8 +236,8 @@ class Ui_fluencyCAD(object):
 
         self.groupBox_2 = QGroupBox(self.centralwidget)
         self.groupBox_2.setObjectName(u"groupBox_2")
-        sizePolicy3.setHeightForWidth(self.groupBox_2.sizePolicy().hasHeightForWidth())
-        self.groupBox_2.setSizePolicy(sizePolicy3)
+        sizePolicy2.setHeightForWidth(self.groupBox_2.sizePolicy().hasHeightForWidth())
+        self.groupBox_2.setSizePolicy(sizePolicy2)
         self.gridLayout_2 = QGridLayout(self.groupBox_2)
         self.gridLayout_2.setObjectName(u"gridLayout_2")
         self.pb_rectool = QPushButton(self.groupBox_2)
@@ -273,8 +273,9 @@ class Ui_fluencyCAD(object):
 
         self.groupBox_3 = QGroupBox(self.centralwidget)
         self.groupBox_3.setObjectName(u"groupBox_3")
-        sizePolicy3.setHeightForWidth(self.groupBox_3.sizePolicy().hasHeightForWidth())
-        self.groupBox_3.setSizePolicy(sizePolicy3)
+        sizePolicy2.setHeightForWidth(self.groupBox_3.sizePolicy().hasHeightForWidth())
+        self.groupBox_3.setSizePolicy(sizePolicy2)
+        self.groupBox_3.setMaximumSize(QSize(16777214, 16777213))
         self.gridLayout_4 = QGridLayout(self.groupBox_3)
         self.gridLayout_4.setObjectName(u"gridLayout_4")
         self.pb_con_line = QPushButton(self.groupBox_3)
@@ -296,14 +297,21 @@ class Ui_fluencyCAD(object):
         self.pb_con_horiz.setCheckable(True)
         self.pb_con_horiz.setAutoExclusive(False)
 
-        self.gridLayout_4.addWidget(self.pb_con_horiz, 1, 0, 1, 1)
+        self.gridLayout_4.addWidget(self.pb_con_horiz, 2, 0, 1, 1)
 
         self.pb_con_vert = QPushButton(self.groupBox_3)
         self.pb_con_vert.setObjectName(u"pb_con_vert")
         self.pb_con_vert.setCheckable(True)
         self.pb_con_vert.setAutoExclusive(False)
 
-        self.gridLayout_4.addWidget(self.pb_con_vert, 1, 1, 1, 1)
+        self.gridLayout_4.addWidget(self.pb_con_vert, 2, 1, 1, 1)
+
+        self.pb_con_sym = QPushButton(self.groupBox_3)
+        self.pb_con_sym.setObjectName(u"pb_con_sym")
+        self.pb_con_sym.setCheckable(True)
+        self.pb_con_sym.setAutoExclusive(False)
+
+        self.gridLayout_4.addWidget(self.pb_con_sym, 3, 1, 1, 1)
 
         self.pb_con_dist = QPushButton(self.groupBox_3)
         self.pb_con_dist.setObjectName(u"pb_con_dist")
@@ -311,14 +319,19 @@ class Ui_fluencyCAD(object):
         self.pb_con_dist.setAutoExclusive(False)
         self.pb_con_dist.setAutoRepeatDelay(297)
 
-        self.gridLayout_4.addWidget(self.pb_con_dist, 2, 0, 1, 1)
+        self.gridLayout_4.addWidget(self.pb_con_dist, 3, 0, 1, 1)
 
-        self.pb_con_sym = QPushButton(self.groupBox_3)
-        self.pb_con_sym.setObjectName(u"pb_con_sym")
-        self.pb_con_sym.setCheckable(True)
-        self.pb_con_sym.setAutoExclusive(False)
+        self.pb_con_mid = QPushButton(self.groupBox_3)
+        self.pb_con_mid.setObjectName(u"pb_con_mid")
+        self.pb_con_mid.setCheckable(True)
 
-        self.gridLayout_4.addWidget(self.pb_con_sym, 2, 1, 1, 1)
+        self.gridLayout_4.addWidget(self.pb_con_mid, 1, 0, 1, 1)
+
+        self.pb_con_perp = QPushButton(self.groupBox_3)
+        self.pb_con_perp.setObjectName(u"pb_con_perp")
+        self.pb_con_perp.setCheckable(True)
+
+        self.gridLayout_4.addWidget(self.pb_con_perp, 1, 1, 1, 1)
 
 
         self.gridLayout.addWidget(self.groupBox_3, 2, 0, 1, 1)
@@ -326,7 +339,7 @@ class Ui_fluencyCAD(object):
         fluencyCAD.setCentralWidget(self.centralwidget)
         self.menubar = QMenuBar(fluencyCAD)
         self.menubar.setObjectName(u"menubar")
-        self.menubar.setGeometry(QRect(0, 0, 1755, 24))
+        self.menubar.setGeometry(QRect(0, 0, 2214, 24))
         fluencyCAD.setMenuBar(self.menubar)
         self.statusbar = QStatusBar(fluencyCAD)
         self.statusbar.setObjectName(u"statusbar")
@@ -349,12 +362,6 @@ class Ui_fluencyCAD(object):
         self.pb_apply_code.setText(QCoreApplication.translate("fluencyCAD", u"Apply Code", None))
         self.pushButton.setText(QCoreApplication.translate("fluencyCAD", u"Delete Code", None))
         self.InputTab.setTabText(self.InputTab.indexOf(self.code_tab), QCoreApplication.translate("fluencyCAD", u"Code", None))
-        self.groupBox.setTitle(QCoreApplication.translate("fluencyCAD", u"Modify", None))
-        self.pb_extrdop.setText(QCoreApplication.translate("fluencyCAD", u"Extrd", None))
-        self.pb_cutop.setText(QCoreApplication.translate("fluencyCAD", u"Cut", None))
-        self.pb_arrayop.setText(QCoreApplication.translate("fluencyCAD", u"Arry", None))
-        self.pb_revop.setText(QCoreApplication.translate("fluencyCAD", u"Rev", None))
-        self.gl_box.setTitle(QCoreApplication.translate("fluencyCAD", u"Model Viewer", None))
         self.groupBox_5.setTitle(QCoreApplication.translate("fluencyCAD", u"Sketch", None))
         self.groupBox_6.setTitle(QCoreApplication.translate("fluencyCAD", u"Tools", None))
         self.pb_del_sketch.setText(QCoreApplication.translate("fluencyCAD", u"Del sketch", None))
@@ -366,6 +373,12 @@ class Ui_fluencyCAD(object):
         self.pb_edt_sktch_3.setText(QCoreApplication.translate("fluencyCAD", u"Nothing", None))
         self.groupBox_4.setTitle(QCoreApplication.translate("fluencyCAD", u"Export", None))
         self.pushButton_2.setText(QCoreApplication.translate("fluencyCAD", u"STL", None))
+        self.gl_box.setTitle(QCoreApplication.translate("fluencyCAD", u"Model Viewer", None))
+        self.groupBox.setTitle(QCoreApplication.translate("fluencyCAD", u"Modify", None))
+        self.pb_extrdop.setText(QCoreApplication.translate("fluencyCAD", u"Extrd", None))
+        self.pb_cutop.setText(QCoreApplication.translate("fluencyCAD", u"Cut", None))
+        self.pb_arrayop.setText(QCoreApplication.translate("fluencyCAD", u"Arry", None))
+        self.pb_revop.setText(QCoreApplication.translate("fluencyCAD", u"Rev", None))
         self.groupBox_9.setTitle(QCoreApplication.translate("fluencyCAD", u"Workplanes", None))
         self.pb_origin_wp.setText(QCoreApplication.translate("fluencyCAD", u"WP Origin", None))
         self.pb_origin_face.setText(QCoreApplication.translate("fluencyCAD", u" WP Face", None))
@@ -375,11 +388,13 @@ class Ui_fluencyCAD(object):
         self.pb_slotool.setText(QCoreApplication.translate("fluencyCAD", u"Slot", None))
         self.pb_linetool.setText(QCoreApplication.translate("fluencyCAD", u"Line", None))
         self.groupBox_3.setTitle(QCoreApplication.translate("fluencyCAD", u"Constrain", None))
-        self.pb_con_line.setText(QCoreApplication.translate("fluencyCAD", u"Pt_Line", None))
+        self.pb_con_line.setText(QCoreApplication.translate("fluencyCAD", u"Pt_Lne", None))
         self.pb_con_ptpt.setText(QCoreApplication.translate("fluencyCAD", u"Pt_Pt", None))
         self.pb_con_horiz.setText(QCoreApplication.translate("fluencyCAD", u"Horiz", None))
         self.pb_con_vert.setText(QCoreApplication.translate("fluencyCAD", u"Vert", None))
-        self.pb_con_dist.setText(QCoreApplication.translate("fluencyCAD", u"Distnce", None))
         self.pb_con_sym.setText(QCoreApplication.translate("fluencyCAD", u"Symetrc", None))
+        self.pb_con_dist.setText(QCoreApplication.translate("fluencyCAD", u"Distnce", None))
+        self.pb_con_mid.setText(QCoreApplication.translate("fluencyCAD", u"Pt_Mid_L", None))
+        self.pb_con_perp.setText(QCoreApplication.translate("fluencyCAD", u"Perp_Lne", None))
     # retranslateUi
 
diff --git a/drawing_modules/draw_widget2d.py b/drawing_modules/draw_widget2d.py
index e9fcc96..55c5502 100644
--- a/drawing_modules/draw_widget2d.py
+++ b/drawing_modules/draw_widget2d.py
@@ -72,6 +72,11 @@ class SketchWidget(QWidget):
     def distance(self, p1, p2):
         return math.sqrt((p1.x() - p2.x())**2 + (p1.y() - p2.y())**2)
 
+    def calculate_midpoint(self, point1, point2):
+        mx = (point1.x() + point2.x()) // 2
+        my = (point1.y() + point2.y()) // 2
+        return QPoint(mx, my)
+
     def is_point_on_line(self, p, p1, p2, tolerance=5):
         # Calculate the lengths of the sides of the triangle
         a = self.distance(p, p1)
@@ -137,18 +142,19 @@ class SketchWidget(QWidget):
             """print("Initial slv_points_main:", self.slv_points_main)
             print("Change list:", point_list)"""
 
-            for tbu_points_idx in point_list:
-                # Each tbu_points_idx is a tuple: (index, old_point, new_point)
-                index, old_point, new_point = tbu_points_idx
-                """print("Updating index:", index)
-                print("Old point:", old_point)
-                print("New point:", new_point)"""
+            if len(point_list) > 0:
+                for tbu_points_idx in point_list:
+                    # Each tbu_points_idx is a tuple: (index, old_point, new_point)
+                    index, old_point, new_point = tbu_points_idx
+                    """print("Updating index:", index)
+                    print("Old point:", old_point)
+                    print("New point:", new_point)"""
 
-                # Update the point in slv_points_main
-                self.slv_points_main[index]['ui_point'] = new_point
+                    # Update the point in slv_points_main
+                    self.slv_points_main[index]['ui_point'] = new_point
 
-            # Print updated state
-            #print("Updated slv_points_main:", self.slv_points_main)
+                # Print updated state
+                #print("Updated slv_points_main:", self.slv_points_main)
 
             """# UPDATE UI POINTS with solver points
             for i in range(len(self.slv_points_main) + len(self.slv_lines_main)):
@@ -436,6 +442,9 @@ class SketchWidget(QWidget):
             elif self.solv.solve() == ResultFlag.INCONSISTENT:
                 print("Solve_failed - Incons")
 
+        if event.button() == Qt.LeftButton and self.mouse_mode == "pb_con_mid":
+
+
 
         points_need_update = check_all_points()
         print("This", points_need_update)
@@ -514,19 +523,21 @@ class SketchWidget(QWidget):
         painter.drawLine(middle_x, 0, middle_x, self.height())
 
         # Draw tick marks
-        tick_length = 10
-        tick_spacing = 50
+        tick_length = int(10  * self.zoom)
+        tick_spacing = int(50 * self.zoom)
 
         pen = QPen(Qt.gray, 1, Qt.SolidLine)
         painter.setPen(pen)
 
-        # Draw tick marks on the X axis
-        for x in range(0, self.width(), tick_spacing):
-            painter.drawLine(x, middle_y - tick_length // 2, x, middle_y + tick_length // 2)
+        # Draw tick marks on the X axis to the right and left from the middle point
+        for x in range(0, self.width() // 2, tick_spacing):
+            painter.drawLine(middle_x + x, middle_y - tick_length // 2, middle_x + x, middle_y + tick_length // 2)
+            painter.drawLine(middle_x - x, middle_y - tick_length // 2, middle_x - x, middle_y + tick_length // 2)
 
-        # Draw tick marks on the Y axis
-        for y in range(0, self.height(), tick_spacing):
-            painter.drawLine(middle_x - tick_length // 2, y, middle_x + tick_length // 2, y)
+        # Draw tick marks on the Y axis upwards and downwards from the middle point
+        for y in range(0, self.height() // 2, tick_spacing):
+            painter.drawLine(middle_x - tick_length // 2, middle_y + y, middle_x + tick_length // 2, middle_y + y)
+            painter.drawLine(middle_x - tick_length // 2, middle_y - y, middle_x + tick_length // 2, middle_y - y)
 
         # Draw the origin point in red
         painter.setPen(QPen(Qt.red, 4))
@@ -553,11 +564,6 @@ class SketchWidget(QWidget):
         # Apply the zoom factor
         painter.scale(self.zoom, self.zoom)
 
-        # Set the background color
-        #painter.fillRect(0, self.width(), 0, self.height(), QColor('black'))
-
-        # Draw axes
-
         pen = QPen(Qt.gray)
         pen.setWidth(2 / self.zoom)
         painter.setPen(pen)
@@ -567,7 +573,14 @@ class SketchWidget(QWidget):
             painter.drawEllipse(point['ui_point'], 3 / self.zoom, 3 / self.zoom)
 
         for dic in self.slv_lines_main:
-            painter.drawLine(dic['ui_points'][0] , dic['ui_points'][1])
+            p1 = dic['ui_points'][0]
+            p2 = dic['ui_points'][1]
+            painter.drawLine(p1, p2)
+
+            dis = self.distance(p1, p2)
+            mid = self.calculate_midpoint(p1, p2)
+
+            painter.drawText(mid, str(round(dis, 2)))
 
         pen = QPen(Qt.green)
         pen.setWidth(2)
@@ -587,7 +600,7 @@ class SketchWidget(QWidget):
             painter.setPen(highlight_pen)
             painter.drawEllipse(self.hovered_point, 5 / self.zoom, 5 / self.zoom)
 
-        if self.selected_line:
+        if self.selected_line and not self.hovered_point:
             p1, p2 = self.selected_line
             painter.setPen(QPen(Qt.red, 2))
             painter.drawLine(p1, p2)
diff --git a/gui.ui b/gui.ui
index 417e23d..c056d4b 100644
--- a/gui.ui
+++ b/gui.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>1755</width>
-    <height>685</height>
+    <width>2214</width>
+    <height>803</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -15,10 +15,10 @@
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QGridLayout" name="gridLayout">
-    <item row="0" column="2" rowspan="8">
+    <item row="0" column="2" rowspan="11">
      <widget class="QTabWidget" name="InputTab">
       <property name="sizePolicy">
-       <sizepolicy hsizetype="MinimumExpanding" vsizetype="Preferred">
+       <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
         <horstretch>0</horstretch>
         <verstretch>0</verstretch>
        </sizepolicy>
@@ -81,70 +81,7 @@
       </widget>
      </widget>
     </item>
-    <item row="0" column="5" rowspan="7" alignment="Qt::AlignTop">
-     <widget class="QGroupBox" name="groupBox">
-      <property name="title">
-       <string>Modify</string>
-      </property>
-      <layout class="QGridLayout" name="gridLayout_3">
-       <item row="0" column="0">
-        <widget class="QPushButton" name="pb_extrdop">
-         <property name="text">
-          <string>Extrd</string>
-         </property>
-        </widget>
-       </item>
-       <item row="0" column="1">
-        <widget class="QPushButton" name="pb_cutop">
-         <property name="text">
-          <string extracomment="1. Bigger obj 2. smaller object">Cut</string>
-         </property>
-        </widget>
-       </item>
-       <item row="1" column="0">
-        <widget class="QPushButton" name="pb_arrayop">
-         <property name="text">
-          <string>Arry</string>
-         </property>
-        </widget>
-       </item>
-       <item row="1" column="1">
-        <widget class="QPushButton" name="pb_revop">
-         <property name="text">
-          <string>Rev</string>
-         </property>
-        </widget>
-       </item>
-      </layout>
-     </widget>
-    </item>
-    <item row="0" column="4" rowspan="8">
-     <widget class="QGroupBox" name="gl_box">
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="MinimumExpanding" vsizetype="MinimumExpanding">
-        <horstretch>0</horstretch>
-        <verstretch>4</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="font">
-       <font>
-        <pointsize>12</pointsize>
-       </font>
-      </property>
-      <property name="title">
-       <string>Model Viewer</string>
-      </property>
-      <layout class="QHBoxLayout" name="horizontalLayout_4">
-       <property name="spacing">
-        <number>-1</number>
-       </property>
-       <property name="leftMargin">
-        <number>12</number>
-       </property>
-      </layout>
-     </widget>
-    </item>
-    <item row="0" column="3" rowspan="8">
+    <item row="0" column="3" rowspan="11">
      <widget class="QGroupBox" name="groupBox_5">
       <property name="sizePolicy">
        <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
@@ -275,7 +212,7 @@
       </layout>
      </widget>
     </item>
-    <item row="7" column="5">
+    <item row="10" column="5">
      <widget class="QGroupBox" name="groupBox_4">
       <property name="title">
        <string>Export</string>
@@ -291,6 +228,69 @@
       </layout>
      </widget>
     </item>
+    <item row="0" column="4" rowspan="11">
+     <widget class="QGroupBox" name="gl_box">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+        <horstretch>0</horstretch>
+        <verstretch>4</verstretch>
+       </sizepolicy>
+      </property>
+      <property name="font">
+       <font>
+        <pointsize>12</pointsize>
+       </font>
+      </property>
+      <property name="title">
+       <string>Model Viewer</string>
+      </property>
+      <layout class="QHBoxLayout" name="horizontalLayout_4">
+       <property name="spacing">
+        <number>-1</number>
+       </property>
+       <property name="leftMargin">
+        <number>12</number>
+       </property>
+      </layout>
+     </widget>
+    </item>
+    <item row="0" column="5" rowspan="10" alignment="Qt::AlignTop">
+     <widget class="QGroupBox" name="groupBox">
+      <property name="title">
+       <string>Modify</string>
+      </property>
+      <layout class="QGridLayout" name="gridLayout_3">
+       <item row="0" column="0">
+        <widget class="QPushButton" name="pb_extrdop">
+         <property name="text">
+          <string>Extrd</string>
+         </property>
+        </widget>
+       </item>
+       <item row="0" column="1">
+        <widget class="QPushButton" name="pb_cutop">
+         <property name="text">
+          <string extracomment="1. Bigger obj 2. smaller object">Cut</string>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="0">
+        <widget class="QPushButton" name="pb_arrayop">
+         <property name="text">
+          <string>Arry</string>
+         </property>
+        </widget>
+       </item>
+       <item row="1" column="1">
+        <widget class="QPushButton" name="pb_revop">
+         <property name="text">
+          <string>Rev</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </widget>
+    </item>
     <item row="0" column="0">
      <widget class="QGroupBox" name="groupBox_9">
       <property name="title">
@@ -389,6 +389,12 @@
         <verstretch>0</verstretch>
        </sizepolicy>
       </property>
+      <property name="maximumSize">
+       <size>
+        <width>16777214</width>
+        <height>16777213</height>
+       </size>
+      </property>
       <property name="title">
        <string>Constrain</string>
       </property>
@@ -396,7 +402,7 @@
        <item row="0" column="1">
         <widget class="QPushButton" name="pb_con_line">
          <property name="text">
-          <string>Pt_Line</string>
+          <string>Pt_Lne</string>
          </property>
          <property name="checkable">
           <bool>true</bool>
@@ -419,7 +425,7 @@
          </property>
         </widget>
        </item>
-       <item row="1" column="0">
+       <item row="2" column="0">
         <widget class="QPushButton" name="pb_con_horiz">
          <property name="text">
           <string>Horiz</string>
@@ -432,7 +438,7 @@
          </property>
         </widget>
        </item>
-       <item row="1" column="1">
+       <item row="2" column="1">
         <widget class="QPushButton" name="pb_con_vert">
          <property name="text">
           <string>Vert</string>
@@ -445,7 +451,20 @@
          </property>
         </widget>
        </item>
-       <item row="2" column="0">
+       <item row="3" column="1">
+        <widget class="QPushButton" name="pb_con_sym">
+         <property name="text">
+          <string>Symetrc</string>
+         </property>
+         <property name="checkable">
+          <bool>true</bool>
+         </property>
+         <property name="autoExclusive">
+          <bool>false</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="3" column="0">
         <widget class="QPushButton" name="pb_con_dist">
          <property name="text">
           <string>Distnce</string>
@@ -461,16 +480,23 @@
          </property>
         </widget>
        </item>
-       <item row="2" column="1">
-        <widget class="QPushButton" name="pb_con_sym">
+       <item row="1" column="0">
+        <widget class="QPushButton" name="pb_con_mid">
          <property name="text">
-          <string>Symetrc</string>
+          <string>Pt_Mid_L</string>
          </property>
          <property name="checkable">
           <bool>true</bool>
          </property>
-         <property name="autoExclusive">
-          <bool>false</bool>
+        </widget>
+       </item>
+       <item row="1" column="1">
+        <widget class="QPushButton" name="pb_con_perp">
+         <property name="text">
+          <string>Perp_Lne</string>
+         </property>
+         <property name="checkable">
+          <bool>true</bool>
          </property>
         </widget>
        </item>
@@ -484,7 +510,7 @@
     <rect>
      <x>0</x>
      <y>0</y>
-     <width>1755</width>
+     <width>2214</width>
      <height>24</height>
     </rect>
    </property>
diff --git a/main.py b/main.py
index 9d66abc..63c3d0e 100644
--- a/main.py
+++ b/main.py
@@ -12,7 +12,6 @@ from python_solvespace import SolverSystem, ResultFlag
 # main, draw_widget, gl_widget
 
 class MainWindow(QMainWindow):
-
     def __init__(self):
         super().__init__()
 
@@ -65,7 +64,6 @@ class MainWindow(QMainWindow):
 
         self.sketchWidget.constrain_done.connect(self.constrain_finished)
 
-
     def add_wp_origin(self):
         #Select orientation  
         #orientation, ok = Q .getDouble(self, 'Extrude Length', 'Enter a mm value:', decimals=2)
@@ -88,7 +86,7 @@ class MainWindow(QMainWindow):
             self.sketchWidget.line_buffer = None
 
     def act_constrain_pt_line_mode(self):
-        if not self.ui.pb_linetool.isChecked():
+        if not self.ui.pb_con_line.isChecked():
             self.sketchWidget.mouse_mode = 'pt_line'
         else:
             self.sketchWidget.mouse_mode = None
@@ -109,12 +107,19 @@ class MainWindow(QMainWindow):
             self.sketchWidget.line_buffer = None
 
     def act_constrain_distance_mode(self):
-        if not self.ui.pb_con_vert.isChecked():
+        if not self.ui.pb_con_dist.isChecked():
             self.sketchWidget.mouse_mode = 'distance'
         else:
             self.sketchWidget.mouse_mode = None
             self.sketchWidget.line_buffer = None
 
+    def act_constrain_mid_point_mode(self):
+        if not self.ui.pb_con_mid.isChecked():
+            self.sketchWidget.mouse_mode = 'pb_con_mid'
+        else:
+            self.sketchWidget.mouse_mode = None
+            self.sketchWidget.line_buffer = None
+
     def constrain_finished(self):
         self.ui.pb_con_ptpt.setChecked(False)
         self.ui.pb_con_line.setChecked(False)
@@ -225,7 +230,6 @@ class MainWindow(QMainWindow):
 
         return p_list
 
-
     def send_extrude(self):
         selected = self.ui.sketch_list.currentItem()
         name = selected.text()
@@ -289,10 +293,6 @@ class MainWindow(QMainWindow):
         self.openGLWidget.load_stl(file)
         self.openGLWidget.update()
 
-
-
-
-
     """ def check_current_tab(self):
         if self.ui.InputTab.currentIndex() == 0:
             geo = Geometry()