CanvasTopLeft

Draws a circular arc on the canvas.

Side effecting procedure that draws a circle on the screen. Implemented by the target platform.

Side effecting procedure that fills a circle. Implemented by the target platform.

To be removed from CanvasPlatform.

Draws an elliptical arc on the canvas.

Side effecting procedure that draws an ellipse on the screen. Implemented by the target platform.

Side effecting procedure that fills an ellipse on the screen. Implemented by the target platform.

The centre of this geometric / graphical element. The centre will not change if the object type is capable of being rotated and is rotated. The cenDefault on other bounded elements may move relative to points on the object when the object is rotated.

The X component of the centre.

The Y component of the centre.

A callback timer with an elapsed time from a given start point. Although are in a general purpose form, the most common usage is for animations where things move dependent on how much time has passed. The function is of form: (elapsedTime(in milliseconds), Startime (in milliseconds) => Unit. The startTime is to be used to call the next frame at then end of the function, if another frame is needed.

Attempts to find and load file, attempts to parse the file, attempts to find object of type A. If all stages successful, calls procedure (Unit returning function) with that object of type A

Not sure why spacing has got a minus sign

Badly named I think, not sure why spacing has got a minus sign

The initial frame although are in a general purpose form, the most common usage is for animations where things move dependent on how much time has passed.

Top right offset from centre.

Returns the system (Unix) time in milliseconds.

A call back timer. Takes the delay in milliseconds

The canvas implementation will call this function when the mouse button is depressed. Named after Javascript command.

The canvas implementation will call this function when a mouse button is released. Named after Javascript command.

returns true if the shift key isdepressed.