misc.py 文件源码

def lines_to_path(lines):
    '''
    Given a set of line segments (n, 2, [2|3]), populate a path
    '''
    lines = np.asanyarray(lines)

    if is_shape(lines, (-1, (2,3))):
        result = {'entities' : np.array([Line(np.arange(len(lines)))]),
                  'vertices' : lines}
        return result
    elif is_shape(lines, (-1,2,(2,3))):
        entities = [Line([i, i+1]) for i in range(0, (lines.shape[0]*2) - 1, 2)]
        vertices = lines.reshape((-1,lines.shape[2]))
        result = {'entities' : entities,
                  'vertices' : vertices}
    else:
        raise ValueError('Lines must be (n,(2|3)) or (n,2,(2|3))')
    return result