Java Rectangle Intersect intersects(Rectangle aRectangle, Line2D aLine)

Description

intersects

License

Apache License

Declaration

public static boolean intersects(Rectangle aRectangle, Line2D aLine) 

Method Source Code

//package com.java2s;
/*//from   ww  w . j  ava  2 s . co  m
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * 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.
 */

import java.awt.*;

import java.awt.geom.Line2D;
import java.awt.geom.Point2D;

public class Main {
    public static boolean intersects(Rectangle aRectangle, Line2D aLine) {
        if (aLine == null || aRectangle == null) {
            return false;
        }

        return (!segmentOutsideRectangle(aRectangle, aLine)) && (!segmentInsideRectangle(aRectangle, aLine));
    }

    private static boolean segmentOutsideRectangle(Rectangle aRectangle, Line2D aSegment) {
        return (!isWithin(aRectangle, aSegment.getP1())) && (!isWithin(aRectangle, aSegment.getP2()));
    }

    private static boolean segmentInsideRectangle(Rectangle aRectangle, Line2D aSegment) {
        return isWithin(aRectangle, aSegment.getP1()) && isWithin(aRectangle, aSegment.getP2());
    }

    public static boolean isWithin(Rectangle aRectangle, Point2D aPoint) {
        return (aPoint.getX() > aRectangle.getX())
                && (aPoint.getX() < aRectangle.getX() + aRectangle.getBounds().width)
                && ((aPoint.getY() > aRectangle.getY())
                        && (aPoint.getY() < aRectangle.getY() + aRectangle.getBounds().height));
    }
}

Related

1. intersects(final float x, final float y, final float z, final int sx, final int sy, final int sz)
2. intersects(final Rectangle elementRect, final Rectangle viewportRect)
3. intersects(final Rectangle2D a, final Rectangle2D b)
4. intersects(float cx, float cy, float radius, float left, float top, float right, float bottom)
5. intersects(Point p1, Point p2, Rectangle rect)
6. intersects(Rectangle rect1, Rectangle rect2, boolean vertical)
7. intersects(Rectangle2D r, Object o)
8. intersects(Rectangle2D rect1, Rectangle2D rect2)
9. intersectsOutline(Rectangle2D r, Shape s)