- Added distance and quadrant

- added line distance to drawn lines

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()