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/*
 * Copyright (C) 2023 Parisi Alessandro - [email protected]
 * This file is part of MaterialFX (https://github.com/palexdev/MaterialFX)
 *
 * MaterialFX is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3 of the License,
 * or (at your option) any later version.
 *
 * MaterialFX is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with MaterialFX. If not, see .
 */

package io.github.palexdev.mfxeffects.enums;

import javafx.animation.Interpolator;

import java.util.function.Function;

/**
 * Enumerator that offers some new {@link Interpolator}s for JavaFX's animations.
 */
public enum Interpolators {
	INTERPOLATOR_V1(null) {
		public Interpolator toInterpolator() {
			return Interpolator.SPLINE(0.25D, 0.1D, 0.25D, 1.0D);
		}
	},
	INTERPOLATOR_V2(null) {
		public Interpolator toInterpolator() {
			return Interpolator.SPLINE(0.0825D, 0.3025D, 0.0875D, 0.9975D);
		}
	},
	LINEAR((t) -> t) {
		public Interpolator toInterpolator() {
			return new Interpolator() {
				protected double curve(double t) {
					return getCurve().apply(t);
				}
			};
		}
	},
	EASE_IN((t) -> t * t * t) {
		public Interpolator toInterpolator() {
			return new Interpolator() {
				protected double curve(double t) {
					return getCurve().apply(t);
				}
			};
		}
	},
	EASE_IN_SINE((t) -> 1.0D - Math.cos(t * 3.141592653589793D / 2.0D)) {
		public Interpolator toInterpolator() {
			return new Interpolator() {
				protected double curve(double t) {
					return getCurve().apply(t);
				}
			};
		}
	},
	EASE_OUT((t) -> 1.0D - (1.0D - t) * (1.0D - t) * (1.0D - t)) {
		public Interpolator toInterpolator() {
			return new Interpolator() {
				protected double curve(double t) {
					return getCurve().apply(t);
				}
			};
		}
	},
	EASE_OUT_SINE((t) -> Math.sin(t * 3.141592653589793D / 2.0D)) {
		public Interpolator toInterpolator() {
			return new Interpolator() {
				protected double curve(double t) {
					return getCurve().apply(t);
				}
			};
		}
	},
	EASE_IN_OUT((t) -> t < 0.5D ? 4.0D * t * t * t : 1.0D - Math.pow(-2.0D * t + 2.0D, 3.0D) / 2.0D) {
		public Interpolator toInterpolator() {
			return new Interpolator() {
				protected double curve(double t) {
					return getCurve().apply(t);
				}
			};
		}
	},
	EASE_IN_OUT_SINE((t) -> -(Math.cos(3.141592653589793D * t) - 1.0D) / 2.0D) {
		public Interpolator toInterpolator() {
			return new Interpolator() {
				protected double curve(double t) {
					return getCurve().apply(t);
				}
			};
		}
	};

	private final Function curve;

	Interpolators(Function curve) {
		this.curve = curve;
	}

	/**
	 * Converts a {@code Function} to a JavaFX's {@link Interpolator}.
	 */
	public abstract Interpolator toInterpolator();

	public Function getCurve() {
		return this.curve;
	}
}