Arc

Create an arc, part of an oval that fills the box given by two opposite corners.

Arcs are drawn between a starting point (x1, y1) and an ending point (x2, y2). They look like Ovals, except only the section from startAngle to endAngle is visible.

Creating an Arc

You can create an Arc using the following functions:

Arc(x1, y1, x2, y2)

Arc(x1, y1, x2, y2, startAngle, endAngle, style, color, fill, thickness, rotation, visibility)

Parameter	Type	Default	Description
x1	int or float	required	The horizontal position of the box's top-left corner, in pixels.
y1	int or float	required	The vertical position of the box's top-left corner, in pixels.
x2	int or float	required	The horizontal position of the box's bottom-right corner, in pixels.
y2	int or float	required	The vertical position of the box's bottom-right corner, in pixels.
startAngle	int or float	PI	The starting angle, in degrees.
endAngle	int or float	TWO_PI	The ending angle, in degrees.
style	int	OPEN	The arc style, one of OPEN (an open arc), CHORD (closed with a straight line between the ends), or PIE (closed with two lines to the center).
color	Color	Color.BLACK	The color.
fill	bool	False	Whether the arc is filled in (True) or just an outline (False).
thickness	int	1	The outline thickness, in pixels.
rotation	int or float	0	How far to turn the arc, in degrees, counter-clockwise.
visibility	int	100	How visible the arc is, from 0 (invisible) to 100 (fully visible).

For example,

arc = Arc(100, 100, 200, 200, 0, 180)

Once created, you can add it to a Display using the Display's add() function.

Functions

Once an Arc arc has been created, the following functions are available:

Position

Function	Description
arc.getPosition()	Return the object's position, the top-left corner of its bounding box.
arc.getX()	Return the object's horizontal position.
arc.getY()	Return the object's vertical position.
arc.getCenter()	Return the object's center point.
arc.getCenterX()	Return the object's horizontal center.
arc.getCenterY()	Return the object's vertical center.
arc.setPosition(x, y)	Move the object so the top-left corner of its bounding box sits at the given point.
arc.setX(x)	Set the object's horizontal position.
arc.setY(y)	Set the object's vertical position.
arc.setCenter(x, y)	Move the object so its center sits at the given point.
arc.setCenterX(x)	Set the object's horizontal center.
arc.setCenterY(y)	Set the object's vertical center.
arc.move(x, y)	Move the object to a new position.

Size

Function	Description
arc.getSize()	Return the object's width and height.
arc.getWidth()	Return the object's width.
arc.getHeight()	Return the object's height.
arc.setSize(width, height)	Set the object's width and height.
arc.setWidth(width)	Set the object's width.
arc.setHeight(height)	Set the object's height.

Rotation

Function	Description
arc.getRotation()	Return how far the object is turned.
arc.setRotation(rotation)	Turn the object to a given angle.
arc.rotate(angle)	Turn the object by an additional angle.

Visibility

Function	Description
arc.getVisibility()	Return how visible the object is.
arc.setVisibility(visibility)	Set how visible the object is.

Color

Function	Description
arc.getColor()	Return the shape's color.
arc.getFill()	Report whether the shape is filled in.
arc.getThickness()	Return the shape's outline thickness.
arc.setColor()	Set the shape's color.
arc.setFill(fill)	Set whether the shape is filled in.
arc.setThickness(thickness)	Set the shape's outline thickness.

Information

Function	Description
arc.getEndpoints()	Return the object's four corners.
arc.getBoundingBox()	Return the smallest upright box that surrounds the object.
arc.getGroup()	Return the Group this object belongs to.
arc.getDisplay()	Return the Display this object is on.
arc.setToolTipText()	Set the hover text shown over the object.

Hit Testing

Function	Description
arc.contains(x, y)	Report whether a point lies on (or inside) the arc.
arc.intersects(other)	Report whether this object overlaps another.
arc.encloses(other)	Report whether this object completely contains another.

Events

Function	Description
arc.onMouseClick(action)	Set up a function to call when the mouse is clicked on this object.
arc.onMouseDown(action)	Set up a function to call when the mouse button is pressed on this object.
arc.onMouseUp(action)	Set up a function to call when the mouse button is released over this object.
arc.onMouseMove(action)	Set up a function to call when the mouse moves over this object.
arc.onMouseDrag(action)	Set up a function to call when the mouse is dragged over this object.
arc.onMouseEnter(action)	Set up a function to call when the mouse moves onto this object.
arc.onMouseExit(action)	Set up a function to call when the mouse moves off this object.
arc.onKeyType(action)	Set up a function to call when a key is typed (pressed and released).
arc.onKeyDown(action)	Set up a function to call when a key is pressed down.
arc.onKeyUp(action)	Set up a function to call when a key is released.