Function pointOnPerimeter

Returns a point on a circle's perimeter at a specified angle in radians

// Circle without position
const circleA = { radius: 5 };

// Get point at angle Math.PI, passing in a origin coordinate
const ptA = Circles.pointOnPerimeter(circleA, Math.PI, {x: 10, y: 10 });

// Point on circle with position
const circleB = { radius: 5, x: 10, y: 10};
const ptB = Circles.pointOnPerimeter(circleB, Math.PI);
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