urcontrol/urosc/oscreceive.py

from helpfunctions import *
import numpy as np
import time

class OSCReceive:
    from pythonosc import dispatcher 
    from pythonosc import osc_server 
    
    import threading 
    

    
    def __init__(self,ip,port,_oscsend,_ur=None):

        
        self.server=None
        self.server_thread=None
            
        #osc receive statistics
        self.oscreceiveintervals = np.zeros(100)
        self.oscreceiveintervals_pos=0
        self.last_oscreceive=0

        self.ur = _ur
        self.oscsend = _oscsend

        self.debug="Nothing"

        # Set up the dispatcher for the server 
        disp = self.dispatcher.Dispatcher() 
        disp.map("/joints", self.handle_received_osc_joint)
        disp.map("/invkin", self.handle_received_osc_invkin) #just calculate inverse kinematics
        disp.map("/movetcp", self.handle_received_osc_tcp) #calculaate inverse kinematics and move

    
        # Set up OSC server 
        self.server = self.osc_server.ThreadingOSCUDPServer((ip, port), disp) 
        print(f"Serving on {self.server.server_address}") 
        self.server_thread = self.threading.Thread(target=self.server.serve_forever) 
        self.server_thread.start() 
    

        
    def handle_received_osc_joint(self,address, *args):

        self.oscreceiveintervals[self.oscreceiveintervals_pos]=time.time()-self.last_oscreceive
        self.last_oscreceive=time.time()
        self.oscreceiveintervals_pos+=1
        self.oscreceiveintervals_pos%=np.size(self.oscreceiveintervals)
        
        #print(f"Received OSC message on {address}") 
        joint_q_aim=[0,0,0,0,0,0]
        try:
            for iarg, arg in enumerate(args): 
                #print(f"Data: {arg}") 
                joint_q_aim[iarg]=toRad(float(arg))
            self.debug=str(joint_q_aim)
        except:
            print("Data not in right format")
            print("Data: "+str(args)) 
        else:
            if self.ur is not None:
                self.ur.setJointQAim(joint_q_aim)

    
    def handle_received_osc_invkin(self,address, *args):

        
        tcp_aim=[0,0,0,0,0,0]
        try:
            for iarg, arg in enumerate(args): 
                #print(f"Data: {arg}") 
                tcp_aim[iarg]=float(arg)
        except:
            print("Data not in right format")
            print("Data: "+str(args)) 
            self.debug="Data not in right format: "+str(args)
        else:
            if self.ur is not None:
                self.debug="tcp_aim"+str(tcp_aim)
                #_rot=RPYtoVec(toRad(tcp_aim[3]),toRad(tcp_aim[4]),toRad(tcp_aim[5]))
                _rot=toRad(tcp_aim[3]),toRad(tcp_aim[4]),toRad(tcp_aim[5])
                pos_q=[tcp_aim[0],tcp_aim[1],tcp_aim[2],_rot[0],_rot[1],_rot[2]]
                joint_q_ik=self.ur.getInverseKinematics(pos_q)
                self.oscsend.sendMessage("/invkin/j",joint_q_ik)
                self.debug="Send joints"+str(joint_q_ik)
                
    def getDebug(self):
        return self.debug
    
    def handle_received_osc_tcp(self,address, *args):

        self.oscreceiveintervals[self.oscreceiveintervals_pos]=time.time()-self.last_oscreceive
        self.last_oscreceive=time.time()
        self.oscreceiveintervals_pos+=1
        self.oscreceiveintervals_pos%=np.size(self.oscreceiveintervals)
        
        tcp_aim=[0,0,0,0,0,0]
        try:
            for iarg, arg in enumerate(args): 
                #print(f"Data: {arg}") 
                tcp_aim[iarg]=float(arg)
        except:
            print("Data not in right format")
            print("Data: "+str(args)) 
        else:
            if self.ur is not None:
                _rot=RPYtoVec(toRad(tcp_aim[3]),toRad(tcp_aim[4]),toRad(tcp_aim[5]))
                pos_q=[tcp_aim[0],tcp_aim[1],tcp_aim[2],_rot[0],_rot[1],_rot[2]]
                joint_q_ik=self.ur.getInverseKinematics(pos_q)
                joint_q_aim=joint_q_ik
                self.ur.setJointQAim(joint_q_aim)
                
                

                

    def getCurrentReceiveFrequency(self):
        _mean=np.mean(self.oscreceiveintervals)
        if _mean>0:
            return 1.0/_mean
        else:
            return 0
    
        

    def disconnect(self):
        self.server.shutdown() 
        self.server_thread.join()