我不断发送一个相机的位置矩阵,通过UDP从胡迪尼,并设置在Cinema4d。两者都是三维软件程序.数据发送得很好,但是Cinema4d冻结了,并且在从houdini更新矩阵时速度很慢。为什么会发生这种情况?
这里是我从Houdini发送的python代码:
import socket
UDP_IP = '192.168.1.8'
UDP_PORT = 7864
cam = hou.selectedNodes()
camerac4d =  hou.node('/obj/obj_andcamera/cam1')
xform = camerac4d.worldTransform() #get the camera matrix
data_string = str(xform)
sock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM) # UDP
sock.sendto(data_string, (UDP_IP, UDP_PORT))电影中的UDP接收器4d:
import socket
def main():
    operateon = doc.SearchObject('Camera') #get cinema 4d camera
    UDP_IP = '192.168.1.8'
    UDP_PORT = 7864
    sock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
    sock.bind((UDP_IP,UDP_PORT))
    data_string,addr = sock.recvfrom(1024)
    data_string = ast.literal_eval(data_string) #converts string list
    #set houdini matrix to cinema 4d camera
    off = v(newlist[3][0],newlist[3][1], -newlist[3][2]) 
    v1 = v(-newlist[0][0],newlist[0][1], newlist[0][2])
    v2 = v(-newlist[1][0], -newlist[1][1], -newlist[1][2])
    v3 = v(-newlist[2][0], -newlist[2][1], newlist[2][2])
    mat = c4d.Matrix(off,v1*-1,v2*-1,v3)
    newpos = operateon.SetMg(mat)发布于 2017-01-06 17:51:22
因此,我想出了办法,我只需将矩阵设置插入一个while循环中,这个循环在5次尝试后就会死掉,这样cinema4d就不会崩溃,然后在电影院中用一行代码更新视口,每次矩阵在最后更新时都会刷新这个窗口。
def main():
operateon = doc.SearchObject('Camera') #find and set the cinema camera
##UDP receive transformation matrix from houdini##
UDP_IP = 'localhost'
UDP_PORT = 7864
sock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
sock.bind((UDP_IP,UDP_PORT))
##kill the connection after 5 viewport updates/works but stupid/but it stops cinema from freezing on an endless while loop
die = 0
while die < 5:
    die += 1
    data_string, addr = sock.recvfrom(1024)
# set each vector component 
    data_string = ast.literal_eval(data_string) #converts string to list 
    #a hou matrix is 4x4, cinema is a 3x4 matrix consisting of :off=position data, v1,v2,v3 stores the scale,rotation and shear
    index = 3  #Delete column 3 
    newlist = [ (x[0:index] + x[index+1:])  for x in data_string]
#print newlist
#---------------------set vectors for matrix---------------------------------#
    off = v(newlist[3][0],newlist[3][1], -newlist[3][2]) 
    v1 = v(-newlist[0][0],newlist[0][1], newlist[0][2])
    v2 = v(-newlist[1][0], -newlist[1][1], -newlist[1][2])
    v3 = v(-newlist[2][0], -newlist[2][1], newlist[2][2])
#---------------------create a matrix and set it---------------------------------#
    mat = c4d.Matrix(off,v1*-1,v2*-1,v3)
    newpos = operateon.SetMg(mat)
    #update the viewport with the new matrix 
    c4d.EventAdd()
    c4d.DrawViews(c4d.DRAWFLAGS_ONLY_ACTIVE_VIEW|c4d.DRAWFLAGS_NO_THREAD|c4d.DRAWFLAGS_NO_REDUCTION|c4d.DRAWFLAGS_STATICBREAK)https://stackoverflow.com/questions/41248560
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