Warning messages for prohibit cases when inserting polyline points

src/bonsai/bonsai/bim/module/model/polyline.py

@@ -250,7 +250,9 @@ class PolylineOperator:
 
     def handle_inserting_polyline(self, context, event):
         if event.value == "RELEASE" and event.type == "LEFTMOUSE":
-            tool.Snap.insert_polyline_point(self.input_ui)
+            result = tool.Snap.insert_polyline_point(self.input_ui)
+            if result:
+                self.report({'WARNING'}, result)
             tool.Blender.update_viewport()
 
         if event.value == "PRESS" and event.type == "C":
@@ -265,7 +267,9 @@ class PolylineOperator:
         ):
             is_valid = self.recalculate_inputs(context)
             if is_valid:
-                tool.Snap.insert_polyline_point(self.input_ui)
+                result = tool.Snap.insert_polyline_point(self.input_ui)
+                if result:
+                    self.report({'WARNING'}, result)
 
             self.tool_state.mode = "Mouse"
             self.tool_state.is_input_on = False

src/bonsai/bonsai/tool/snap.py

@@ -134,12 +134,18 @@ class Snap(bonsai.core.tool.Snap):
             y = snap_vertex.y
             z = snap_vertex.z
 
-        # Avoids creating two points at the same location
         polyline_data = bpy.context.scene.BIMPolylineProperties.polyline_point
         if polyline_data:
-            last_point = polyline_data[len(polyline_data) - 1]
+            # Avoids creating two points at the same location
-            if (x, y, z) == (round(last_point.x, 4), round(last_point.y, 4), round(last_point.z, 4)):
+            for point in polyline_data[1:]: # The first can be repeated to form a wall loop
-                return
+                if (x, y, z) == (point.x, point.y, point.z):
+                    return "Cannot create two points at the same location"
+            print(type(snap_vertex))
+            print(type(polyline_data[-1]))
+            # Avoids creating segments smaller then 0.1. This is a limitation from create_wall_from_2_points
+            length = (Vector((x, y, z)) - Vector((polyline_data[-1].x, polyline_data[-1].y, polyline_data[-1].z))).length
+            if length < 0.1:
+                return "Cannot create a segment smaller then 10cm"
 
         polyline_point = bpy.context.scene.BIMPolylineProperties.polyline_point.add()
         polyline_point.x = x