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Android example source code file (Shape2d.java)

This example Android source code file (Shape2d.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

shape2d

The Shape2d.java Android example source code

/*
 * Copyright (C) 2008 Google Inc.
 *
 * 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.google.android.divideandconquer;

/**
 * A 2d shape has left, right, top and bottom dimensions.
 *
 */
public abstract class Shape2d {

    public abstract float getLeft();
    public abstract float getRight();
    public abstract float getTop();
    public abstract float getBottom();

    /**
     * @param other Another 2d shape
     * @return Whether this shape is intersecting with the other.
     */
    public boolean isIntersecting(Shape2d other) {
        return getLeft() <= other.getRight() && getRight() >= other.getLeft()
                && getTop() <= other.getBottom() && getBottom() >= other.getTop();
    }

    /**
     * @param x An x coordinate
     * @param y A y coordinate
     * @return Whether the point is within this shape
     */
    public boolean isPointWithin(float x, float y) {
        return (x > getLeft() && x < getRight()
                && y > getTop() && y < getBottom());

    }

    public float getArea() {
        return getHeight() * getWidth();
    }

    public float getHeight() {
        return getBottom() - getTop();
    }

    public float getWidth () {
        return getRight() - getLeft();
    }
}

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