# ArcLayer
ArcLayer displays arcs and provides controls for displaying them in interesting ways.
ArcLayer extends from [Layer2D]
## IArcLayerProps
IArcLayerProps extends [ILayer2DProps].
**animate: {
angle: IAutoEasingMethod;
angleOffset: IAutoEasingMethod;
center: IAutoEasingMethod;
colorEnd: IAutoEasingMethod;
colorStart: IAutoEasingMethod;
radius: IAutoEasingMethod;
thickness: IAutoEasingMethod;
}**
(optional for animate and its all elements)
Provides easing animation for properties of [ArcInstance]
**scaleType: ArcScaleType**
(optional) This specifies the scale Type of arc
ArcScaleType has two options:
* NONE: All dimensions are within world space
* SCREEN_CURVE: The thickness of the arc is in screen space. Thus, camera zoom changes will not affect it and must be controlled by scaleFactor alone.
# ArcInstance
ArcInstance extends [Instance]
## Constructor(options: IArcInstanceOptions)
**options: IArcInstanceOptions**
IArcInstanceOptions extends [IInstanceOptions]
* angle: Vec2
(required) The start and end angle of the arc
* center: Vec2
(required) The center point where the arc wraps around
* colorEnd: Vec4
(optional) This is the end color of the arc
* colorStart: Vec4
(optional) This is the start color of the arc
* depth: number
(optional) Depth sorting of the arc (or the z value of the label)
* radius: number
(required) The radius of how far the middle of the arc is from the center point
* thickness?: Vec2
(optional) The start to end thickness of the arc
## Properties
**angle: Vec2**
The start and end angle of the arc
Default value is [0, Math.PI]
**colorEnd: Vec4**
This is the end color of the arc
Default value is [1, 1, 1, 1]
**colorStart: Vec4**
This is the start color of the arc
Default value is [1, 1, 1, 1]
**center: Vec2**
The center point where the arc wraps around
Default value is [0, 0]
**depth: number**
Depth sorting of the arc (or the z value of the arc)
Default value is 0
**angleOffset: number**
An offset to apply to the angle. This makes it easy to animate the arc or set a point of reference
for angle 0
Default value is 0
**radius: number**
The radius of how far the middle of the arc is from the center point
Default value is 1
**thickness: Vec2**
The start to end thickness of the arc
Default value is [5, 5]