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Fixed crash in Blender 3.5 on creating fill area annotation

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Crash was caused by some change in Blender Python API in 3.5.
The code below resulted in `ValueError: bpy_struct: item.attr = val: MeshPolygon.vertices: array length cannot be changed to 4 (expected 0)`

```
obj.data.polygons.add(1)
p1 = obj.data.polygons[-1]
p1.vertices = (v1.index, v2.index, v3.index, v4.index)
```
This commit is contained in:
Andrej730
2023-03-31 17:47:07 +05:00
parent 65055a9dd0
commit 6ec4fc7914
1 changed files with 9 additions and 43 deletions
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src/blenderbim/blenderbim/bim/module/drawing/annotation.py
+9 -43
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@@ -92,51 +92,17 @@ class Annotator:
@staticmethod
def add_plane_to_annotation(obj):
co1, co2, co3, co4 = Annotator.get_placeholder_coords()
co1 = obj.matrix_world.inverted() @ co1 # bot left
co2 = obj.matrix_world.inverted() @ co2 # top left
co3 = obj.matrix_world.inverted() @ co3 # bot right
co4 = obj.matrix_world.inverted() @ co4 # top right
# default order = bot left, top left, bot right, top right
# therefore we redefine the order
face_verts = [0, 2, 3, 1]
obj.data.vertices.add(4)
v1 = obj.data.vertices[-4]
v2 = obj.data.vertices[-3]
v3 = obj.data.vertices[-2]
v4 = obj.data.vertices[-1]
v1.co = co4
v2.co = co2
v3.co = co1
v4.co = co3
verts_world_space = Annotator.get_placeholder_coords()
verts_local = [obj.matrix_world.inverted() @ v for v in verts_world_space]
bm = tool.Blender.get_bmesh_for_mesh(obj.data, clean=True)
new_verts = [bm.verts.new(v) for v in verts_local]
obj.data.edges.add(4)
e1 = obj.data.edges[-4]
e2 = obj.data.edges[-3]
e3 = obj.data.edges[-2]
e4 = obj.data.edges[-1]
e1.vertices = (v1.index, v2.index)
e2.vertices = (v2.index, v3.index)
e3.vertices = (v3.index, v4.index)
e4.vertices = (v4.index, v1.index)
obj.data.loops.add(4)
l1 = obj.data.loops[-4]
l2 = obj.data.loops[-3]
l3 = obj.data.loops[-2]
l4 = obj.data.loops[-1]
l1.vertex_index = v1.index
l1.edge_index = e1.index
l2.vertex_index = v2.index
l2.edge_index = e2.index
l3.vertex_index = v3.index
l3.edge_index = e3.index
l4.vertex_index = v4.index
l4.edge_index = e4.index
obj.data.polygons.add(1)
p1 = obj.data.polygons[-1]
p1.vertices = (v1.index, v2.index, v3.index, v4.index)
p1.loop_start = l1.index
p1.loop_total = 4
bm.faces.new([new_verts[i] for i in face_verts])
tool.Blender.apply_bmesh(obj.data, bm)
return obj
@staticmethod