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mik9/Interpolators.java

Created March 13, 2014 13:01
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Interpolators.java
/*
* Copyright (C) 2011 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 com.example.app;
import android.view.animation.Interpolator;
class Interpolators {
private static final float DOMAIN = 1.0f;
private static final float DURATION = 1.0f;
private static final float START = 0.0f;
static class Linear {
public static final Interpolator easeNone = new Interpolator() {
public float getInterpolation(float input) {
return input;
}
};
}
static class Cubic {
public static final Interpolator easeIn = new Interpolator() {
public float getInterpolation(float input) {
return DOMAIN*(input/=DURATION)*input*input + START;
}
};
public static final Interpolator easeOut = new Interpolator() {
public float getInterpolation(float input) {
return DOMAIN*((input=input/DURATION-1)*input*input + 1) + START;
}
};
public static final Interpolator easeInOut = new Interpolator() {
public float getInterpolation(float input) {
return ((input/=DURATION/2) < 1.0f) ?
(DOMAIN/2*input*input*input + START)
: (DOMAIN/2*((input-=2)*input*input + 2) + START);
}
};
}
static class Quad {
public static final Interpolator easeIn = new Interpolator() {
public float getInterpolation (float input) {
return DOMAIN*(input/=DURATION)*input + START;
}
};
public static final Interpolator easeOut = new Interpolator() {
public float getInterpolation(float input) {
return -DOMAIN *(input/=DURATION)*(input-2) + START;
}
};
public static final Interpolator easeInOut = new Interpolator() {
public float getInterpolation(float input) {
return ((input/=DURATION/2) < 1) ?
(DOMAIN/2*input*input + START)
: (-DOMAIN/2 * ((--input)*(input-2) - 1) + START);
}
};
}
static class Quart {
public static final Interpolator easeIn = new Interpolator() {
public float getInterpolation(float input) {
return DOMAIN*(input/=DURATION)*input*input*input + START;
}
};
public static final Interpolator easeOut = new Interpolator() {
public float getInterpolation(float input) {
return -DOMAIN * ((input=input/DURATION-1)*input*input*input - 1) + START;
}
};
public static final Interpolator easeInOut = new Interpolator() {
public float getInterpolation(float input) {
return ((input/=DURATION/2) < 1) ?
(DOMAIN/2*input*input*input*input + START)
: (-DOMAIN/2 * ((input-=2)*input*input*input - 2) + START);
}
};
}
static class Quint {
public static final Interpolator easeIn = new Interpolator() {
public float getInterpolation(float input) {
return DOMAIN*(input/=DURATION)*input*input*input*input + START;
}
};
public static final Interpolator easeOut = new Interpolator() {
public float getInterpolation(float input) {
return DOMAIN*((input=input/DURATION-1)*input*input*input*input + 1) + START;
}
};
public static final Interpolator easeInOut = new Interpolator() {
public float getInterpolation(float input) {
return ((input/=DURATION/2) < 1) ?
(DOMAIN/2*input*input*input*input*input + START)
: (DOMAIN/2*((input-=2)*input*input*input*input + 2) + START);
}
};
}
static class Sine {
public static final Interpolator easeIn = new Interpolator() {
public float getInterpolation(float input) {
return -DOMAIN * (float) Math.cos(input/DURATION * (Math.PI/2)) + DOMAIN + START;
}
};
public static final Interpolator easeOut = new Interpolator() {
public float getInterpolation(float input) {
return DOMAIN * (float) Math.sin(input/DURATION * (Math.PI/2)) + START;
}
};
public static final Interpolator easeInOut = new Interpolator() {
public float getInterpolation(float input) {
return -DOMAIN/2 * ((float)Math.cos(Math.PI*input/DURATION) - 1.0f) + START;
}
};
}
}
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