import * as gs from "../../gs-json";
/**
 * Calculate a set of xyz position on the circle/arc ir ellipse/arc. The number of points = length / resolution.
 * With resolution from 0.0001 to 0.5, 0.0001 being a higher resolution than 0.5
 */
export declare function getRenderXYZs(obj: gs.IObj, resolution: number): gs.XYZ[];
/**
 * Calculate the length of the circle or arc.
 */
export declare function circleLength(circle: gs.ICircle): number;
/**
 * Calculate the xyz position at parameter t on the circle or arc. The t parameter range is from 0 to 1.
 */
export declare function circleEvaluate(circle: gs.ICircle, t: number): gs.XYZ;
/**
 * Calculate the xyz tangent at parameter t on the circle or arc. The t parameter range is from 0 to 1.
 */
export declare function circleEvaluateTangent(circle: gs.ICircle, t: number): gs.XYZ;
/**
 * Project a point on a circle, and calculate the parameter t.
 */
export declare function circleEvaluatePoint(circle: gs.ICircle, point: gs.IPoint): number;
/**
 * Calculate a set of xyz position on the circle or arc. The number of points = length / resolution.
 * With resolution from 0.0001 to 0.5, 0.0001 being a higher resolution than 0.5
 */
export declare function circleGetRenderXYZs(circle: gs.ICircle, resolution: number): gs.XYZ[];