c# - C#中的多个方法

Question

我想有很多方法。但是，我不想一遍又一遍地写。我想要方法 bBIntersectsB1、bBIntersectsB2、...、bBIntersectsB9、bBIntersectsB10。在每个方法中，唯一的变化是 blueBallRect1，我想要 blueBallRect2，...，blueBallRect9，blueBallRect10。

public bool bBIntersectsB1(Rect barTopRect, Rect barBottomRect, Rect blueBallRect1)
{
    barTopRect.Intersect(blueBallRect1);
    barBottomRect.Intersect(blueBallRect1);

    if (barTopRect.IsEmpty && barBottomRect.IsEmpty)
    {
        return false;
    }
    else
    {
        return true;
    }
}

Answer 1

只做一个方法，像这样:

public bool DoesIntersect(Rect topRect, Rect bottomRect, Rect ballRect)
{
    topRect.Intersect(ballRect);
    bottomRect.Intersect(ballRect);

    if (topRect.IsEmpty && bottomRect.IsEmpty)
    {
        return false;
    }
    else
    {
        return true;
    }
}

然后只需调用 DoesIntersect，如下所示:

var doesBall1Intersect = DoesIntersect(topRect, bottomRect, blueBallRect1);
var doesBall2Intersect = DoesIntersect(topRect, bottomRect, blueBallRect2);
var doesBall3Intersect = DoesIntersect(topRect, bottomRect, blueBallRect3);
var doesBall4Intersect = DoesIntersect(topRect, bottomRect, blueBallRect4);
var doesBall5Intersect = DoesIntersect(topRect, bottomRect, blueBallRect5);
var doesBall6Intersect = DoesIntersect(topRect, bottomRect, blueBallRect6);
var doesBall7Intersect = DoesIntersect(topRect, bottomRect, blueBallRect7);
var doesBall8Intersect = DoesIntersect(topRect, bottomRect, blueBallRect8);
var doesBall9Intersect = DoesIntersect(topRect, bottomRect, blueBallRect9);

只要替换 blueBallRectX 就可以重复多次。

您还可以遍历 BlueBallRect 对象列表并将每个对象传递给 DoesIntersect 方法，如下所示:

List<BlueBallRect> listOfBlueBallRect = new List<BlueBallRect>();

listOfBlueBallRect = SomeMethodThatGetsListOfBlueBallRect;

foreach(BlueBallRect ball in listOfBlueBallRect)
{
    if(DoesIntersect(topRect, bottomRect, ball))
    {
        // Do something here, because they intersect
    }
    else
    {
        // Do something else here, because they do not intersect
    }
}