CCEN.py 文件源码

def generate_bmesh_repr(p1, v1, axis, num_verts):
    '''
        p1:     center of circle (local coordinates)
        v1:     first vertex of circle in (local coordinates)
        axis:   orientation matrix
        origin: obj.location
    '''
    props = bpy.context.scene.tinycad_props
    rescale = props.rescale

    # generate geometry up front
    chain = []
    gamma = 2 * math.pi / num_verts
    for i in range(num_verts + 1):
        theta = gamma * i
        mat_rot = mathutils.Matrix.Rotation(theta, 4, axis)
        local_point = (mat_rot * ((v1 - p1) * rescale))
        chain.append(local_point + p1)

    obj = bpy.context.edit_object
    me = obj.data
    bm = bmesh.from_edit_mesh(me)

    # add verts
    v_refs = []
    for p in chain:
        v = bm.verts.new(p)
        v.select = False  # this might be a default.. redundant?
        v_refs.append(v)

    # join verts, daisy chain
    num_verts = len(v_refs)
    for i in range(num_verts):
        idx1 = i
        idx2 = (i + 1) % num_verts
        bm.edges.new([v_refs[idx1], v_refs[idx2]])

    bmesh.update_edit_mesh(me, True)