BaseFloatingPathTransition.java

/*
 * Copyright (C) 2015 UFreedom
 *
 * 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.ufreedom.floatingview.transition;

/**
 * Author UFreedom
 * Date : 2016 十月 19
 */

public abstract  class BaseFloatingPathTransition  implements FloatingPathTransition {

    private PathPosition mPathPosition;
    private float [] mPathPositionGetter;
    
    public float getStartPathPosition(){
        return 0;
    }
    
    public float getEndPathPosition(){
        if (getFloatingPath() != null){
            return getFloatingPath().getPathMeasure().getLength();
        }
        return 0;
    }
    
    public PathPosition getFloatingPosition(float progress) {
        if (mPathPosition == null){
            mPathPosition = new PathPosition();
        }
        if (mPathPositionGetter == null){
            mPathPositionGetter = new float[2];
        }
        if (getFloatingPath() != null){
            getFloatingPath() .getPathMeasure().getPosTan(progress, mPathPositionGetter, null);
            mPathPosition.x = mPathPositionGetter[0];
            mPathPosition.y = mPathPositionGetter[1];
        }
        return mPathPosition;
    }
    
    
    
}