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/*
 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.scenario.animation;

import com.sun.javafx.animation.TickCalculation;
import javafx.animation.Interpolator;
import javafx.util.Duration;

public class NumberTangentInterpolator extends Interpolator {

    private final double inValue, outValue;
    private final long inTicks, outTicks;

    public double getInValue() { return inValue; }

    public double getOutValue() { return outValue; }

    public double getInTicks() { return inTicks; }

    public double getOutTicks() { return outTicks; }

    public NumberTangentInterpolator(Duration inDuration, double inValue, Duration outDuration, double outValue) {
        this.inTicks = TickCalculation.fromDuration(inDuration);
        this.inValue = inValue;
        this.outTicks = TickCalculation.fromDuration(outDuration);
        this.outValue = outValue;
    }

    public NumberTangentInterpolator(Duration duration, double value) {
        this.outTicks = this.inTicks = TickCalculation.fromDuration(duration);
        this.inValue = this.outValue = value;
    }

    @Override
    public String toString() {
        return "NumberTangentInterpolator [inValue=" + inValue
                + ", inDuration=" + TickCalculation.toDuration(inTicks) + ", outValue="
                + outValue + ", outDuration=" + TickCalculation.toDuration(outTicks) + "]";
    }

    @Override
    public int hashCode() {
        int hash = 7;
        hash = 59 * hash + (int) (Double.doubleToLongBits(this.inValue) ^ (Double.doubleToLongBits(this.inValue) >>> 32));
        hash = 59 * hash + (int) (Double.doubleToLongBits(this.outValue) ^ (Double.doubleToLongBits(this.outValue) >>> 32));
        hash = 59 * hash + (int) (this.inTicks ^ (this.inTicks >>> 32));
        hash = 59 * hash + (int) (this.outTicks ^ (this.outTicks >>> 32));
        return hash;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final NumberTangentInterpolator other = (NumberTangentInterpolator) obj;
        if (Double.doubleToLongBits(this.inValue) != Double.doubleToLongBits(other.inValue)) {
            return false;
        }
        if (Double.doubleToLongBits(this.outValue) != Double.doubleToLongBits(other.outValue)) {
            return false;
        }
        if (this.inTicks != other.inTicks) {
            return false;
        }
        if (this.outTicks != other.outTicks) {
            return false;
        }
        return true;
    }

    @Override
    protected double curve(double t) {
        // Fallback: If NumberTangentInterpolator is used with a target, that is
        // not a number,
        // it behaves like linear interpolation.
        return t;
    }
}




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