Basic polyline implementation

src/blenderbim/blenderbim/bim/module/model/__init__.py

@@ -117,7 +117,8 @@ classes = (
     space.ToggleHideSpaces,
     mep.FitFlowSegments,
     mep.RegenerateDistributionElement,
-    prop.SnapVertex,
+    prop.SnapMousePoint,
+    prop.PolylinePoint,
     prop.BIMModelProperties,
     prop.BIMArrayProperties,
     prop.BIMStairProperties,

src/blenderbim/blenderbim/bim/module/model/decorator.py

@@ -337,9 +337,26 @@ class WallPolylineDecorator:
         self.shader = gpu.shader.from_builtin("UNIFORM_COLOR")
         gpu.state.point_size_set(10)
 
-        snap_prop = context.scene.BIMModelProperties.snap_vertex[0]
+        snap_prop = context.scene.BIMModelProperties.snap_mouse_point[0]
-        points = [Vector((snap_prop.x, snap_prop.y, snap_prop.z))]
+        point = [Vector((snap_prop.x, snap_prop.y, snap_prop.z))]
         if snap_prop.snap_type in ["Face", "Plane"]:
-            self.draw_batch("POINTS", points, decorator_color_special)
+            self.draw_batch("POINTS", point, decorator_color_special)
         else:
-            self.draw_batch("POINTS", points, decorator_color_selected)
+            self.draw_batch("POINTS", point, decorator_color_selected)
+
+        polyline_data = context.scene.BIMModelProperties.polyline_point
+        polyline_points = []
+        polyline_edges = []
+        for point_prop in polyline_data:
+            point = Vector((point_prop.x, point_prop.y, point_prop.z))
+            polyline_points.append(point)
+
+        for i in range(len(polyline_points) - 1):
+            polyline_edges.append([i, i+1])
+            
+        self.draw_batch("POINTS", polyline_points, decorator_color_selected)
+        if len(polyline_points) > 1:
+            self.draw_batch("LINES", polyline_points, decorator_color_selected, polyline_edges)
+            
+        self.line_shader.uniform_float("lineWidth", 2.0)
+            

src/blenderbim/blenderbim/bim/module/model/prop.py

@@ -99,11 +99,16 @@ def is_object_array_applicable(self, obj):
     return ifcopenshell.util.element.get_pset(element, "BBIM_Array")
 
 
-class SnapVertex(PropertyGroup):
+class SnapMousePoint(PropertyGroup):
     x: bpy.props.FloatProperty(name="X")
     y: bpy.props.FloatProperty(name="Y")
     z: bpy.props.FloatProperty(name="Z")
     snap_type: bpy.props.StringProperty(name="Snap Type")
+
+class PolylinePoint(PropertyGroup):
+    x: bpy.props.FloatProperty(name="X")
+    y: bpy.props.FloatProperty(name="Y")
+    z: bpy.props.FloatProperty(name="Z")
     
 
 class BIMModelProperties(PropertyGroup):
@@ -197,7 +202,8 @@ class BIMModelProperties(PropertyGroup):
     type_predefined_type: bpy.props.EnumProperty(items=get_type_predefined_type, name="Predefined Type", default=None)
     type_name: bpy.props.StringProperty(name="Name", default="TYPEX")
     boundary_class: bpy.props.EnumProperty(items=get_boundary_class, name="Boundary Class")
-    snap_vertex: bpy.props.CollectionProperty(type=SnapVertex)
+    snap_mouse_point: bpy.props.CollectionProperty(type=SnapMousePoint)
+    polyline_point: bpy.props.CollectionProperty(type=PolylinePoint)
 
 
 class BIMArrayProperties(PropertyGroup):

src/blenderbim/blenderbim/bim/module/model/wall.py

@@ -338,7 +338,7 @@ class DrawPolylineWall(bpy.types.Operator):
         return (obj, bbox_2d)
             
             
-    def main(self, context, event):
+    def snaping_movement(self, context, event):
         scene = context.scene
         region = context.region
         rv3d = context.region_data
@@ -506,35 +506,27 @@ class DrawPolylineWall(bpy.types.Operator):
         obj, hit, face_index = cast_rays_and_get_best_object()
         intersection = ray_cast_to_plane(context, plane_origin, plane_normal)
         
-        try:
-            snap_vertex = context.scene.BIMModelProperties.snap_vertex[0]
-        except:
-            snap_vertex = context.scene.BIMModelProperties.snap_vertex.add()
             
         if obj is not None:
             original_obj = obj.original
 
-            snap_points = get_snap_points(obj, face_index)
+            snap_points = tool.Snaping.get_snap_points_on_raycasted_obj(obj, face_index)
-            snap_point = select_snap_point(snap_points, hit, snap_threshold)
+            snap_point = tool.Snaping.select_snap_point(snap_points, hit, snap_threshold)
                 
             if snap_point:
-                snap_vertex.x = snap_point[0][0]
+                tool.Snaping.update_snaping_point(snap_point[0], snap_point[1])
-                snap_vertex.y = snap_point[0][1]
+                
-                snap_vertex.z = snap_point[0][2]
-                snap_vertex.snap_type = snap_point[1]
             else:
-                snap_vertex.x = hit[0]
+                tool.Snaping.update_snaping_point(hit, "Face")
-                snap_vertex.y = hit[1]
-                snap_vertex.z = hit[2]
-                snap_vertex.snap_type = "Face"
 
         else:
-            snap_vertex.x = intersection[0]
+            tool.Snaping.update_snaping_point(intersection, "Plane")
-            snap_vertex.y = intersection[1]
-            snap_vertex.z = intersection[2]
-            snap_vertex.snap_type = "Plane"
 
     
+    def draw_polyline(self, context):
+        tool.Snaping.insert_polyline_point()        
+
+        
     def modal(self, context, event):
         
         if event.type == 'MOUSEMOVE':
@@ -551,16 +543,20 @@ class DrawPolylineWall(bpy.types.Operator):
 
         if self.mousemove_count > 3:
             start_time = time()
-            self.main(context, event)
+            self.snaping_movement(context, event)
             operator_time = time() - start_time
             print(f"main function was finished in {operator_time:.2f} seconds")
             return {'RUNNING_MODAL'}
+
+        if event.type == 'LEFTMOUSE':
+            self.draw_polyline(context)
             
         if event.type in {'MIDDLEMOUSE', 'WHEELUPMOUSE', 'WHEELDOWNMOUSE'}:
             return {'PASS_THROUGH'}
             
         if event.type in {'RIGHTMOUSE', 'ESC'}:
             WallPolylineDecorator.uninstall()
+            tool.Snaping.clear_polyline()
             tool.Blender.update_viewport()
             print("CANCELLED")
             return {'CANCELLED'}

src/blenderbim/blenderbim/core/tool.py

@@ -934,6 +934,10 @@ class Spatial:
 class Covering:
     def get_z_from_ceiling_height(cls): pass
 
+@interface
+class Snaping:
+    pass
+
 @interface
 class Structural:
     def disable_editing_structural_analysis_model(cls): pass

src/blenderbim/blenderbim/tool/__init__.py

@@ -50,6 +50,7 @@ from blenderbim.tool.qto import Qto
 from blenderbim.tool.resource import Resource
 from blenderbim.tool.root import Root
 from blenderbim.tool.sequence import Sequence
+from blenderbim.tool.snaping import Snaping
 from blenderbim.tool.spatial import Spatial
 from blenderbim.tool.covering import Covering
 from blenderbim.tool.structural import Structural

src/blenderbim/blenderbim/tool/snaping.py

@@ -0,0 +1,99 @@
+# BlenderBIM Add-on - OpenBIM Blender Add-on
+# Copyright (C) 2022 Cyril Waechter <cyril@biminsight.ch>
+#
+# This file is part of BlenderBIM Add-on.
+#
+# BlenderBIM Add-on is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# BlenderBIM Add-on is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
+
+import bpy
+import blenderbim.core.tool
+import mathutils
+from mathutils import Matrix, Vector
+
+
+class Snaping(blenderbim.core.tool.Snaping):
+    @classmethod
+    def get_snap_points_on_raycasted_obj(cls, obj, face_index):
+        snap_points = {}
+        matrix = obj.matrix_world.copy()
+        face = obj.data.polygons[face_index]
+        vertices = []
+        for i in face.vertices:
+            vertices.append(matrix @ obj.data.vertices[i].co)
+        
+        edges_center = []
+        for v1, v2 in zip(vertices, vertices[1:] + [vertices[0]]):
+            middle_dist = (v2-v1) / 2
+            edges_center.append(v1 + middle_dist)
+
+        snap_points.update({tuple(vertex): "Vertices" for vertex in vertices})
+        snap_points.update({tuple(edge_center): "Edge Center" for edge_center in edges_center})
+
+        return snap_points
+
+    @classmethod
+    def select_snap_point(cls, snap_points, hit, threshold):
+        shortest_distance = None
+        snap_point = None
+        for point, snap_type in snap_points.items():
+            point = Vector(point)
+            distance = (point - hit).length
+            if distance > threshold:
+                continue
+            if shortest_distance and distance < shortest_distance:
+                shortest_distance = distance
+                snap_point = (point, snap_type)
+
+            elif not shortest_distance:
+                shortest_distance = distance
+                snap_point = (point, snap_type)
+            else:
+                pass
+            
+        return snap_point
+
+    @classmethod
+    def update_snaping_point(cls, snap_point, snap_type):
+        try:
+            snap_vertex = bpy.context.scene.BIMModelProperties.snap_mouse_point[0]
+        except:
+            snap_vertex = bpy.context.scene.BIMModelProperties.snap_mouse_point.add()
+
+        snap_vertex.x = snap_point[0]
+        snap_vertex.y = snap_point[1]
+        snap_vertex.z = snap_point[2]
+        snap_vertex.snap_type = snap_type
+
+    @classmethod
+    def insert_polyline_point(cls):
+        snap_vertex = bpy.context.scene.BIMModelProperties.snap_mouse_point[0]
+        polyline_data = bpy.context.scene.BIMModelProperties.polyline_point
+        print(len(polyline_data))
+        if len(polyline_data) > 0:
+            print("X", snap_vertex.x, polyline_data[-1].x)
+            if snap_vertex.x == polyline_data[-1].x and\
+                snap_vertex.y == polyline_data[-1].y and\
+                snap_vertex.z == polyline_data[-1].z:
+                return
+            
+        polyline_point = bpy.context.scene.BIMModelProperties.polyline_point.add()
+        polyline_point.x = snap_vertex.x
+        polyline_point.y = snap_vertex.y
+        polyline_point.z = 0 # TODO Update to the the default container height
+
+    @classmethod
+    def clear_polyline(cls):
+        bpy.context.scene.BIMModelProperties.polyline_point.clear()
+
+