shp1.py 文件源码

def unpack_packet(stream,vertex_type,size):
    # The entire packet is read into memory at once for speed
    packet = stream.read(size)
    primitives = []
    i = 0

    while i < size:
        opcode = packet[i]
        if opcode == 0x00:
            i += 1
            continue
        primitive_type = gx.PrimitiveType(opcode)
        vertex_count = uint16.unpack_from(packet,i + 1)
        vertices = numpy.frombuffer(packet,vertex_type,vertex_count,i + 3)
        primitives.append(Primitive(primitive_type,vertices))
        i += 3 + vertex_count*vertex_type.itemsize

    return primitives