esengine/source/src/Physics/Shapes/Circle.ts

///<reference path="./Shape.ts" />
class Circle extends Shape {
    public radius: number;
    private _originalRadius: number;

    constructor(radius: number){
        super();
        this.radius = radius;
        this._originalRadius = radius;
    }

    public pointCollidesWithShape(point: Vector2): CollisionResult {
        return ShapeCollisions.pointToCicle(point, this);
    }

    public collidesWithShape(other: Shape): CollisionResult{
        if (other instanceof Rect && (other as Rect).isUnrotated){
            return ShapeCollisions.circleToRect(this, other as Rect);
        }

        throw new Error(`Collisions of Circle to ${other} are not supported`);
    }
}