I am trying to build a neural controller to control the simple opensim double pendulum model(attachment). The controller(either PrescribedController or any Custom Controller by overriding computeControls() method ) needs muscle excitations(values between 0 and 1). Can someone help me how to calculat...

Thanks for the reply Thomas. Finally I am able to control the simulation with runtime control input from the keyboard.

is there any predefined controller class which takes control inputs in runtime(from keyboard,network socket,etc when the simulation is running) and apply to its actuator? if none is available is there any possibility of achieving this by overriding computeControls() of Controller? I tried the below ...

Thanks Christopher..!

1. Can't add .vtp files using addDisplayGeometry() function. What is the equivalent of addDisplayGeometry(){which is in 3.x} in opensim4.0?
2. What is the general procedure to visualize opensim model geometry(.osim and .vtp) using opensim4.0 C++ API?

I have built the opensim in ubuntu 16.04 successfully. But while running the example (simple arm whose elbow is articulated by a muscle) using the C++ interface provided in the readme i got the below error. Even after including the path to the directory containing Xml.h, it is still showing the same...