exception treatment on crossing generation

.gitignore

@@ -159,3 +159,5 @@ temporary/*
 
 # REPORTS:
 reports/*
+
+tests.py

generic_functions.py

@@ -905,20 +905,27 @@ def point_forms_minor_angle_w2(fixedpoint_A,centerpoint_B,pointlist,return_index
 
 
         for point in pointlist:
-            pC = qgsgeom_to_pointuple(point)
+            try:
+                pC = qgsgeom_to_pointuple(point)
 
 
-            angle = QgsGeometryUtils.angleBetweenThreePoints(*pA,*pB,*pC) * (180/pi)
+                angle = QgsGeometryUtils.angleBetweenThreePoints(*pA,*pB,*pC) * (180/pi)
 
-            if angle > 180:
-                angle = 360 - angle
+                if angle > 180:
+                    angle = 360 - angle
 
-            anglelist.append(angle)
+                anglelist.append(angle)
+            except:
+                anglelist.append(360)
 
         if print_angles:
             print(anglelist)
 
-        index = anglelist.index(min(anglelist))
+        if anglelist:
+
+            index = anglelist.index(min(anglelist))
+        else:
+            index = 0
 
         if return_index:
             return index
@@ -953,8 +960,9 @@ def check_sidewalk_intersection(intersectiongeom,referencepoint):
             return True,intersectiongeom
         else:
             # if it returns Multipart geometry, it was because there are 2 points of intersection, so we chose the nearest to "referencepoint"
-            print(intersectiongeom.asWkt())
-            print(intersectiongeom.wkbType())
+
+            # print(intersectiongeom.asWkt())
+            # print(intersectiongeom.wkbType())
 
             as_geomcollection = intersectiongeom.asGeometryCollection()
 

osm_sidewalkreator.py

@@ -479,7 +479,7 @@ def change_all_labels_bylang(self):
             (self.dlg.dontsplit_checkbox,"Don't Split",'Não Dividir'),
             (self.dlg.input_feature_text,"input feature:\n(-1: none)",'Feição de Entrada\n(-1: nenhuma)'),
 
-            (self.dlg.min_seg_len_label,"min segment\nlength",'comprimento\nmin. (seg.)'),
+            (self.dlg.min_seg_len_label,"min road\nsegment length",'comprimento min.\n(seg. via)'),
             (self.dlg.ch_remove_abovetol,"remove above tolerance",'remover se acima da tol.'),
 
 
@@ -1137,16 +1137,20 @@ def draw_crossings(self):
                 '''
 
 
+                paralell_unsucessful = False
 
                 if self.dlg.opt_parallel_crossings.isChecked():
                     pts_inters_P0 =  points_intersecting_buffer_boundary(P0,self.splitted_lines,list(P0_intersecting_widths))
 
                     # chosen index:
-                    ch_index = point_forms_minor_angle_w2(innerP0_0,P0,pts_inters_P0,True)
+                    try:
+                        ch_index = point_forms_minor_angle_w2(innerP0_0,P0,pts_inters_P0)
+                        dirvecs_dict[innerP0_id] = vector_from_2_pts(P0,pts_inters_P0[ch_index],initial_vec_len)
+                    except:
+                        paralell_unsucessful = True
 
-                    dirvecs_dict[innerP0_id] = vector_from_2_pts(P0,pts_inters_P0[ch_index],initial_vec_len)
 
-                if self.dlg.opt_perp_crossings.isChecked():
+                if self.dlg.opt_perp_crossings.isChecked() or paralell_unsucessful:
 
                     # creating a perpendicular vector:
                     #    first, we create a vector parallel to the current street segment
@@ -1222,25 +1226,29 @@ def draw_crossings(self):
                 '''
                     in the next functions, we:
 
-                        - create the candidate points, intersecting lines with circle
+                        - create the candidate points, intersecting lines with a circle
 
                         - find the index of the point that forms the minor angle
 
                         - create the vector containing the direction of the crossing
                 '''
 
+                paralell_unsucessful = False
 
                 if self.dlg.opt_parallel_crossings.isChecked():
                     pts_inters_PF =  points_intersecting_buffer_boundary(PF,self.splitted_lines,list(PF_intersecting_widths))
 
 
                     # chosen index:
-                    ch_index = point_forms_minor_angle_w2(innerPF_0,PF,pts_inters_PF,True)
+                    try:
+                        ch_index = point_forms_minor_angle_w2(innerPF_0,PF,pts_inters_PF,True)
 
-                    dirvecs_dict[innerPF_id] = vector_from_2_pts(PF,pts_inters_PF[ch_index],initial_vec_len)
+                        dirvecs_dict[innerPF_id] = vector_from_2_pts(PF,pts_inters_PF[ch_index],initial_vec_len)
+                    except:
+                        paralell_unsucessful = True
 
 
-                if self.dlg.opt_perp_crossings.isChecked():
+                if self.dlg.opt_perp_crossings.isChecked() or paralell_unsucessful:
 
                     # creating a perpendicular vector:
                     #    first, we create a vector parallel to the current street segment

osm_sidewalkreator_dialog_base.ui

@@ -367,7 +367,7 @@ Compute Intersections</string>
     <string notr="true">background-color: rgb(255, 253, 197);</string>
    </property>
    <property name="text">
-    <string>Many Times its better to
+    <string>Sometimes it's better to
 correct errors on OSM data first!</string>
    </property>
    <property name="alignment">
@@ -1244,7 +1244,7 @@ dicularly</string>
          <bool>false</bool>
         </property>
         <property name="text">
-         <string>min segment
+         <string>min road segment
 length</string>
         </property>
         <property name="alignment">