diff --git a/Canvas.cpp b/Canvas.cpp
index 8978b10..46d09cb 100644
--- a/Canvas.cpp
+++ b/Canvas.cpp
@@ -75,15 +75,29 @@ void Canvas::mousePressEvent(QMouseEvent* event)
 	#ifdef _DEBUG
 		qDebug() << "Scene point in" << scene.x() << scene.y();
 	#endif
-	
+
 	if (mode == Mode::None){
 		Point* p = findPointAt(scene);
 		if (p) {
 			draggedPoint = p;
 			dragOffset = scene - QPointF(*p->x, *p->y);
-			return;
 		}
 	}
+
+	else if (mode == Mode::Horizontal || mode == Mode::Vertical) {
+		Line* found = findAt(scene);
+
+		if (found) {
+			if (mode == Mode::Horizontal)
+				sys.addConstraintHorizontal(*found, constraints_count++);
+			else
+				sys.addConstraintVertical(*found, constraints_count++);
+			update();
+		}
+		mode = Mode::None;
+		after_constraint = true;
+	}
+
 	else if (mode == Mode::DrawingLine) {
 		if (!current_line) {
 			current_line = new Line();
diff --git a/Canvas.h b/Canvas.h
index 567652c..0f498ac 100644
--- a/Canvas.h
+++ b/Canvas.h
@@ -19,7 +19,9 @@ enum class Mode : int
     None = 0,
     DrawingLine = 1,
     Parallel = 2,
-    Coincedent = 3
+    Coincedent = 3,
+    Horizontal = 4,
+    Vertical = 5
 };
 
 // Удобный тип для хранения пары параллельных линий (порядок не важен)
diff --git a/DRAWer_2_0.cpp b/DRAWer_2_0.cpp
index 7c2f683..4458cb3 100644
--- a/DRAWer_2_0.cpp
+++ b/DRAWer_2_0.cpp
@@ -30,8 +30,13 @@ void DRAWer_2_0::on_P2P_Button_clicked()
 }
 
 
-void DRAWer_2_0::on_FIX_Button_clicked()
+void DRAWer_2_0::on_Horizontal_Button_clicked()
 {
-
+    ui.widget->changeMode(Mode::Horizontal);
+}
+
+void DRAWer_2_0::on_Vertical_Button_clicked()
+{
+    ui.widget->changeMode(Mode::Vertical);
 }
 
diff --git a/DRAWer_2_0.h b/DRAWer_2_0.h
index 3adf8ef..9d40eca 100644
--- a/DRAWer_2_0.h
+++ b/DRAWer_2_0.h
@@ -18,7 +18,9 @@ private slots:
 
     void on_P2P_Button_clicked();
 
-    void on_FIX_Button_clicked();
+    void on_Horizontal_Button_clicked();
+
+    void on_Vertical_Button_clicked();
 
 private:
     Ui::DRAWer_2_0Class ui;
diff --git a/DRAWer_2_0.ui b/DRAWer_2_0.ui
index 5221b23..fe011c0 100644
--- a/DRAWer_2_0.ui
+++ b/DRAWer_2_0.ui
@@ -66,9 +66,16 @@
        </widget>
       </item>
       <item>
-       <widget class="QPushButton" name="FIX_Button">
+       <widget class="QPushButton" name="Vertical_Button">
         <property name="text">
-         <string>Fix Point</string>
+         <string>Vertical</string>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QPushButton" name="Horizontal_Button">
+        <property name="text">
+         <string>Horizontal</string>
         </property>
        </widget>
       </item>
@@ -117,7 +124,7 @@
      <x>0</x>
      <y>0</y>
      <width>700</width>
-     <height>22</height>
+     <height>21</height>
     </rect>
    </property>
   </widget>
diff --git a/GCS/Geo.h b/GCS/Geo.h
index cf94c87..7c513b0 100644
--- a/GCS/Geo.h
+++ b/GCS/Geo.h
@@ -239,7 +239,7 @@ public:
 
     void set_tag(int);
     int get_tag();
-    bool contains(QPointF, qreal tol = 10.0) const;
+    bool contains(QPointF, qreal tol = 5.0) const;
 
 };