How can I take a picture with a code-defined camera in MATLAB figure?

I want to simulate a virtual camera taking picture from a structure in 3-D space in MATLAB figure. Let us consider that I initialize the focal length, intrinsic matrix, orientation, and position of the camera and plot it using plotCamera command of the MATLAB, and I draw a circle in front of it in MATLAB figure. I searched a lot but I could not find a command which gives us the picture that our defined camera takes from the mentioned circle. Is there any commands for my work?