/**
 * A linear interpolation scheme.
 *
 * @type {number}
 * @category Math
 */
export const CURVE_LINEAR: number;
/**
 * A smooth step interpolation scheme.
 *
 * @type {number}
 * @category Math
 */
export const CURVE_SMOOTHSTEP: number;
/**
 * A Catmull-Rom spline interpolation scheme. This interpolation scheme is deprecated. Use
 * CURVE_SPLINE instead.
 *
 * @type {number}
 * @deprecated
 * @ignore
 */
export const CURVE_CATMULL: number;
/**
 * A cardinal spline interpolation scheme. This interpolation scheme is deprecated. Use
 * CURVE_SPLINE instead.
 *
 * @type {number}
 * @deprecated
 * @ignore
 */
export const CURVE_CARDINAL: number;
/**
 * Cardinal spline interpolation scheme. For Catmull-Rom, specify curve tension 0.5.
 *
 * @type {number}
 * @category Math
 */
export const CURVE_SPLINE: number;
/**
 * A stepped interpolator, free from the shackles of blending.
 *
 * @type {number}
 * @category Math
 */
export const CURVE_STEP: number;