def init(self, context):
if self.use_world_coords:
if self.init_called[1]:
return
else:
if self.init_called[0]:
return
bm = vabm.from_object(
context.active_object,
apply_modifiers=self.use_mirror_modifiers,
settings="PREVIEW",
modifier_types={"MIRROR"},
layer_name="original",
add_faces_layers=True,
)
vabm.LoopTris.index_update(bm)
if self.use_world_coords:
bm.transform(context.active_object.matrix_world)
bm.normal_update() # 必要か？
# LoopTris。要素の変更は無いのでキャッシュを有効にする
loop_tris = LoopTris(bm)
loop_tris.bm = bm
loop_tris.vert_verts = vabm.vert_verts_dict(bm)
memo = loop_tris.memoize
memo.read = memo.write = True
loop_tris.correct()
# 編集中のbmeshの頂点インデックスから、modifier適用後のbmeshの頂点を
# 参照する
# vert用
loop_tris.derived_vert_from_original_index = d = {}
layer = bm.verts.layers.int["original"]
indices = set()
for eve in bm.verts:
i = eve[layer]
if i != -1 and i not in indices:
d[i] = eve
indices.add(i)
# face用
loop_tris.derived_face_from_original_index = d = {}
layer = bm.faces.layers.int["original"]
indices = set()
for efa in bm.faces:
i = efa[layer]
if i != -1 and i not in indices:
d[i] = efa
indices.add(i)
# --- Shift Outline ---
loop_tris.eflags = eflags = {}
for eed in bm.edges:
flag = 0
selected = deselected = 0
for efa in eed.link_faces:
if not efa.hide:
if efa.select:
selected += 1
else:
deselected += 1
if eed.select and not eed.hide:
if selected == 0 and deselected <= 2:
flag = self.WIRE
elif selected == 1 and deselected <= 1:
flag = self.BORDER
eflags[eed] = flag
loop_tris.vflags = vflags = {}
for eve in bm.verts:
flag = 0
wire_num = border_num = 0
for eed in eve.link_edges:
f = eflags[eed]
if f & self.WIRE:
wire_num += 1
elif f & self.BORDER:
border_num += 1
if 1 <= wire_num <= 2 and border_num == 0:
flag = self.WIRE
elif wire_num == 0 and border_num == 2:
flag = self.BORDER
vflags[eve] = flag
# --- Solidify ---
# 頂点のhideとtriの面積により、法線計算に使えるか否かのフラグを付ける
for eve in bm.verts:
eve.tag = not eve.hide
for tri in loop_tris:
tri.tag = not tri[0].face.hide and tri.area > EPS
if self.use_world_coords:
self.init_called[1] = True
self._loop_tris_world = loop_tris
else:
self._loop_tris = loop_tris
self.init_called[0] = True
