New dumb stair tool

src/ifcblenderexport/blenderbim/bim/module/model/stair.py

@@ -0,0 +1,57 @@
+import bpy
+from bpy.types import Operator
+from bpy.props import FloatVectorProperty, FloatProperty, IntProperty
+from bpy_extras.object_utils import AddObjectHelper, object_data_add
+from mathutils import Vector
+
+def add_object(self, context):
+    if self.number_of_treads <= 0:
+        self.number_of_treads = 1
+    verts = [
+        Vector((0, 0, 0)),
+        Vector((0, self.tread_length, 0)),
+        Vector((self.width, self.tread_length, 0)),
+        Vector((self.width, 0, 0)),
+    ]
+    edges = []
+    faces = [[0, 1, 2, 3]]
+
+    mesh = bpy.data.meshes.new(name="New Dumb Stair")
+    mesh.from_pydata(verts, edges, faces)
+    obj = object_data_add(context, mesh, operator=self)
+    modifier = obj.modifiers.new('Stair Width', 'SOLIDIFY')
+    modifier.use_even_offset = True
+    modifier.offset = 1
+    modifier.thickness = self.tread_depth
+    modifier = obj.modifiers.new('Stair Treads', 'ARRAY')
+    modifier.relative_offset_displace[0] = 0
+    modifier.relative_offset_displace[1] = 1
+    modifier.use_constant_offset = True
+    modifier.constant_offset_displace[2] = self.height / self.number_of_treads
+    modifier.count = self.number_of_treads
+    self.riser_height = self.height / self.number_of_treads
+    self.length = self.number_of_treads * self.tread_length
+
+
+class BIM_OT_add_object(Operator, AddObjectHelper):
+    bl_idname = "mesh.add_stair"
+    bl_label = "Dumb Stair"
+    bl_options = {'REGISTER', 'UNDO'}
+
+    width: FloatProperty(name='Width', default=1.1)
+    height: FloatProperty(name='Height', default=1)
+    tread_depth: FloatProperty(name='Tread Depth', default=.2)
+    number_of_treads: IntProperty(name='Number of Treads (Goings)', default=6)
+    tread_length: FloatProperty(name='Tread Length (Going)', default=.25)
+    riser_height: FloatProperty(name='*Calculated* Riser Height')
+    length: FloatProperty(name='*Calculated* Length')
+
+    def execute(self, context):
+        add_object(self, context)
+        return {'FINISHED'}
+
+
+def add_object_button(self, context):
+    self.layout.operator(
+        BIM_OT_add_object.bl_idname,
+        icon='PLUGIN')

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

@@ -23,7 +23,7 @@ def add_object(self, context):
 
 
 class BIM_OT_add_object(Operator, AddObjectHelper):
-    bl_idname = "mesh.add_object"
+    bl_idname = "mesh.add_wall"
     bl_label = "Dumb Wall"
     bl_options = {'REGISTER', 'UNDO'}