java无法获取Rect。相交（rec，rec2）工作

Question

由于某种原因，我的程序无法通过Rect.intersects(re,hitcore)。如果我使用System.out.println()re.flattenToString()，我看到两个矩形相交，但它不会return true

我也尝试过使用re.intersect(hitcore)，但仍然没有。帮忙

import 安卓.graphics.Rect;   

public class Enemy {
public Rect re, hitCore;

private boolean hit = false;


public Enemy() {
    re = new Rect(0, 0, 0, 0);
    hitCore = new Rect(0, 0, 0, 0);

}

public void update() {

    re.set(centerX + leftX, centerY + topY, rightX, botY); // these are set by another class                  
    hitCore.set(ship.getCenterX() + 3, ship.getCenterY() + 10, 93, 20);

            //System.out.println(re.flattenToString() + " rect1");
    //System.out.println(hitCore.flattenToString() + " rect2");

    checkHit(hitCore);

}

private void checkHit(Rect hitCore) {
    if (Rect.intersects(hitCore, re)) {
        hit = true;
    }
}
}

Answer 1

我想出来了。我用x，y和宽度，高度来设置矩形。实际参数是左上角坐标和右下角坐标

 rect.set(x1,y1,x2,y2);