Simulating mouse input programmatically in OS X

Question

Is it possible to simulate the actions of a mouse from a program in OS X? Specifically, the short version is that I\'m trying to simulate a touchscreen using two webcams. So

Answer 1

Swift mouse move and click example:

func mouseMoveAndClick(onPoint point: CGPoint) { 
    guard let moveEvent = CGEvent(mouseEventSource: nil, mouseType: .mouseMoved, mouseCursorPosition: point, mouseButton: .left) else {
        return
    }
    guard let downEvent = CGEvent(mouseEventSource: nil, mouseType: .leftMouseDown, mouseCursorPosition: point, mouseButton: .left) else {
        return
    }
    guard let upEvent = CGEvent(mouseEventSource: nil, mouseType: .leftMouseUp, mouseCursorPosition: point, mouseButton: .left) else {
        return
    }
    moveEvent.post(tap: CGEventTapLocation.cghidEventTap)
    downEvent.post(tap: CGEventTapLocation.cghidEventTap)
    upEvent.post(tap: CGEventTapLocation.cghidEventTap)
}