space_view3d_enhanced_3d_cursor.py 文件源码

def __init__(self, scene, shade):
        SnapUtilityBase.__init__(self)

        convert_types = {'MESH', 'CURVE', 'SURFACE', 'FONT', 'META'}
        self.cache = MeshCache(scene, convert_types)

        # ? seems that dict is enough
        self.bbox_cache = {}#collections.OrderedDict()
        self.sys_matrix_key = [0.0] * 9

        bm = prepare_gridbox_mesh(subdiv=2)
        mesh = bpy.data.meshes.new(tmp_name)
        bm.to_mesh(mesh)
        mesh.update(calc_tessface=True)
        #mesh.calc_tessface()

        self.bbox_obj = self.cache._make_obj(mesh, None)
        self.bbox_obj.hide = True
        self.bbox_obj.draw_type = 'WIRE'
        self.bbox_obj.name = "BoundBoxSnap"

        self.shade_bbox = (shade == 'BOUNDBOX')