xref: /frameworks/base/core/java/android/view/animation/LinearInterpolator.java

/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.view.animation;

import android.content.Context;
import android.util.AttributeSet;

import com.android.internal.view.animation.HasNativeInterpolator;
import com.android.internal.view.animation.NativeInterpolatorFactory;
import com.android.internal.view.animation.NativeInterpolatorFactoryHelper;

/**
 * An interpolator where the rate of change is constant
 */
@HasNativeInterpolator
public class LinearInterpolator extends BaseInterpolator implements NativeInterpolatorFactory {

    public LinearInterpolator() {
    }

    public LinearInterpolator(Context context, AttributeSet attrs) {
    }

    public float getInterpolation(float input) {
        return input;
    }

    /** @hide */
    @Override
    public long createNativeInterpolator() {
        return NativeInterpolatorFactoryHelper.createLinearInterpolator();
    }
}