本文介绍了随机定位的div没有重叠的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

所有div都像我所需要的那样随机放置,但它们偶尔会重叠。
这只是一个偶然的问题。我怎样才能防止这种情况发生? (理想情况下,我可以设置它们之间的最小距离)



我可以通过进一步开发当前的javascript来实现这一目标吗?
我需要考虑一种完全不同的方法吗?



我真的不知道如何解决这个问题。
任何指导将不胜感激。
Thanks。

html

 < div id =box1class =boxes> 
< div id =text1>& nbsp;& nbsp; Lorem Ipsum Dolor Sit Amet& nbsp;& nbsp;< / div>
< / div>

< div id =box2class =boxes>
< div id =text2>& nbsp;& nbsp; Lorem Ipsum Dolor Sit Amet& nbsp;< / div>
< / div>

< div id =box3class =boxes>
< div id =text3>& nbsp;& nbsp; Lorem Ipsum Dolor Sit Amet& nbsp;& nbsp;< / div>
< / div>

< div id =box4class =boxes>
< div id =text4>& nbsp;& nbsp; Lorem Ipsum Dolor Sit Amet& nbsp;& nbsp;< / div>
< / div>

css

  .boxes {
position:absolute;
}

#text1 {
颜色:白色;
font-family:Times,Times New Roman,serif;
font-size:16px;
font-weight:bold;
line-height:24px;
背景颜色:黑色;
}

#text2 {
颜色:白色;
font-family:Times,Times New Roman,serif;
font-size:16px;
font-weight:bold;
line-height:24px;
background-color:blue;
}

#text3 {
颜色:白色;
font-family:Times,Times New Roman,serif;
font-size:16px;
font-weight:bold;
line-height:24px;
background-color:green;
}

#text4 {
颜色:白色;
font-family:Times,Times New Roman,serif;
font-size:16px;
font-weight:bold;
line-height:24px;
背景颜色:红色;

javascript



<$ p (Math.floor(Math.random()* x))$ p $ function setRandomPos(elements,x,dx){
elements.each(function(){
fixLeft = * 10)+ dx;
fixTop =(Math.floor(Math.random()* 40)* 10)+ 180;
$(this).offset({
left:fixLeft ,
top:fixTop
});
});
}

setRandomPos($(。boxes),40,40);

解决方案

将您的JavaScript修改为以下内容。这会存储每个盒子的尺寸,并检查每个新盒子是否有重叠。

  var boxDims = new Array(); 

函数setRandomPos(elements,x,dx){
elements.each(function(){
var conflict = true;
while(conflict){
fixLeft =(Math.floor(Math.random()* x)* 10)+ dx;
fixTop =(Math.floor(Math.random()* 40)* 10)+ 180;
$(this).offset({
left:fixLeft,
top:fixTop
});
var box = {
top:parseInt(window。 getComputedStyle($(this)[0])。top),
left:parseInt(window.getComputedStyle($(this)[0])。left),
width:parseInt(window.getComputedStyle $(this)[0])。width),
height:parseInt(window.getComputedStyle($(this)[0])。height)
}
conflict = false;
for(var i = 0; i< boxDims.length; i ++){
if(overlap(box,boxDims [i])){
conflict = true;
break;
} else {
冲突= false;
}
}
}
boxDims.push(box)

});
}

函数重叠(box1,box2){
var x1 = box1.left
var y1 = box2.top;
var h1 = box1.height;
var w1 = box1.width;
var b1 = y1 + h1;
var r1 = x1 + w1;
var x2 = box1.left;
var y2 = box1.top;
var h2 = box1.height;
var w2 = box1.width;
var b2 = y2 + h2;
var r2 = x2 + w2;

var buf = 24;

if(b1 + buf b2 + buf || r1 + buf r2 + buf)return false;
返回true;
}

setRandomPos($(。boxes),40,40);


All divs are being placed "randomly" like I need them to be, but they occasionally overlap.It's just a matter of chance. How can I prevent that from happening? (Ideally I'd be able to set a minimum distance between them)

Can I achieve this by further developing the current javascript?Do I need consider a completely different approach?

I honestly don't know how to tackle this issue.Any guidance would be highly appreciated.Thanks.

html

<div id="box1" class="boxes">
<div id="text1">&nbsp;&nbsp;Lorem Ipsum Dolor Sit Amet&nbsp;&nbsp;</div>
</div>

<div id="box2" class="boxes">
<div id="text2">&nbsp;&nbsp;Lorem Ipsum Dolor Sit Amet&nbsp;&nbsp;</div>
</div>

<div id="box3" class="boxes">
<div id="text3">&nbsp;&nbsp;Lorem Ipsum Dolor Sit Amet&nbsp;&nbsp;</div>
</div>

<div id="box4" class="boxes">
<div id="text4">&nbsp;&nbsp;Lorem Ipsum Dolor Sit Amet&nbsp;&nbsp;</div>
</div>

css

.boxes {
    position: absolute;
}

#text1 {
    color: white;
    font-family: "Times", Times New Roman, serif;
    font-size: 16px;
    font-weight: bold;
    line-height: 24px;
    background-color: black;
}

#text2 {
    color: white;
    font-family: "Times", Times New Roman, serif;
    font-size: 16px;
    font-weight: bold;
    line-height: 24px;
    background-color: blue;
}

#text3 {
    color: white;
    font-family: "Times", Times New Roman, serif;
    font-size: 16px;
    font-weight: bold;
    line-height: 24px;
    background-color: green;
}

#text4 {
    color: white;
    font-family: "Times", Times New Roman, serif;
    font-size: 16px;
    font-weight: bold;
    line-height: 24px;
    background-color: red;
}

javascript

function setRandomPos(elements,x,dx){
    elements.each(function(){
        fixLeft=(Math.floor(Math.random()*x)*10) + dx;
        fixTop = (Math.floor(Math.random()*40)*10) + 180;
        $(this).offset({
            left: fixLeft,
            top: fixTop
            });
        });
}

setRandomPos($(".boxes"),40,40);

Fiddle

解决方案

Ammend your JavaScript to the following. This stores each box's dimensions and checks each new box against overlaps.

var boxDims = new Array();

function setRandomPos(elements,x,dx){
  elements.each(function(){
    var conflict = true;
    while (conflict) {
        fixLeft=(Math.floor(Math.random()*x)*10) + dx;
        fixTop = (Math.floor(Math.random()*40)*10) + 180;
        $(this).offset({
            left: fixLeft,
            top: fixTop
        });
        var box = {
            top: parseInt(window.getComputedStyle($(this)[0]).top),
            left: parseInt(window.getComputedStyle($(this)[0]).left),
            width: parseInt(window.getComputedStyle($(this)[0]).width),
            height: parseInt(window.getComputedStyle($(this)[0]).height)
        }
        conflict = false;
        for (var i=0;i<boxDims.length;i++) {
            if (overlap(box,boxDims[i])) {
                conflict = true;
                break;
            } else {
                conflict = false;
            }                   
        }
    }
    boxDims.push(box)

  });
}

function overlap(box1,box2) {
  var x1 = box1.left
  var y1 = box2.top;
  var h1 = box1.height;
  var w1 = box1.width;
  var b1 = y1 + h1;
  var r1 = x1 + w1;
  var x2 = box1.left;
  var y2 = box1.top;
  var h2 = box1.height;
  var w2 = box1.width;
  var b2 = y2 + h2;
  var r2 = x2 + w2;

  var buf = 24;

  if (b1 + buf < y2 || y1 > b2 + buf || r1 + buf < x2 || x1 > r2 + buf) return false;
  return true;
}

setRandomPos($(".boxes"),40,40);

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10-28 00:36