const ScriptElms = {
    "repeat-element": RepeatElement,
    "left-element": LeftElement,
    "right-element": RightElement,
    "forward-element": ForwardElement,
    "back-element": BackElement,
    "circle-element": CircleElement,
    "pen-up-element": PenUpElement,
    "pen-down-element": PenDownElement,
    "back-to-center-element": BackToCenterElement,
    "hider-turtle-element": HideTurtleElement
};

let Painter = {
    canvas:        null,
    canvasContext: null,
    rotation:      0,
    x1:            0,
    y1:            0,
    isPenLifted:   false
}

let draggedElm    = null;