本文介绍了JavaScript随机定位Div的没有重叠他们的处理方法,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 我一直在研究一个随机的概念想法,即在页面上出现6个云,并从数据库中提取随机评论。这部分很容易,但是我发现要确保6层云不相互重叠是非常困难的。我已经仔细研究了碰撞检测,发现在将新的随机定位div放在页面上之前,没有真正合适的方法来检查X或Y范围内的DIV。我的代码下面我知道现在非常混乱。我现在已经检查了最后一个DIV,但是如果DIV 1和DIV 3具有相似的X Y位置,那么这是一个问题。对不起,如果我没有任何意义..这是我的代码和一个jsFiddle $ $ p $ $ $ $文档.ready(函数() { var counter = 0; // var colide = {}; var px = 0; var py = 0; var cloud = new Array(cloud1,cloud2,cloud3,cloud4,cloud5,cloud6); var cloudtext = new Array(This is text for cloud 1:D, 这是云2:D的文本,这是云3的文本:D,这是云4的文本:D,这是云5的文本:D,这是云的文本如果(计数器< 6){计数器++; // var divsize = (Math.random()* 100)+ 50).toFixed(); // var color ='#'+ Math.round(0xffffff * Math.random())。toString(16); $ newdiv = $('< div class =''+ clouds [counter-1] +'>'+ cloudtext [counter - 1] +'< div />')。css({ 'width':'354px','height':'202px' //'width':divsize +'px', //'height':divsize +'px', //'background-color':color,}); var posx =(Math.random()*($(document).width() - 354))。toFixed(); var posy =(Math.random()*($(document).height() - 202))。toFixed(); while(posy posy =(Math.random()*($(document).height() - 202))。toFixed(); ((px> posx + 354)||(px< posx_354)){ if((py> posy + 202)||(py // alert(px +' - '+ posx +'px(temp) - posx(newdiv) - 很好去!'); py = posy; px = posx; $ newdiv.css({'position':'absolute','left':posx +'px','top':posy +'px', 'display':'none','background-image':'url(http://www.demixgaming.co.uk/cloud/images/Cloud.png)','text-align':'center','line-height':'202px','color':'#000'})。appendTo('body') .fadeIn(150).delay(300,function(){ makeDiv(); }); } else { counter--; px = posx; py = posy; makeDiv(); } } else { counter--; px = posx; py = posy; makeDiv(); }; } } makeDiv(); }); JS Fiddle - 链接到JSFiddle 解决方案算法看起来像这样;虽然我可能犯了一个错误,但是 获取文档的高度和宽度 y = docH,x = docW 减去< div> 的高度和宽度, y = y - divH,x = x - divH 在 0..x,0..y 之间选择随机坐标 curX,curY newX = curX,newY = curY 对于每一个< div> 调用它的信息prevX,prevY,prevW,prevH 如果 prevX< ; curX 然后 newX = newX + prevW 如果 prevY 然后 newY = newY + prevH 附加< div> 在 newX,newY 保存< div> curX,curY,divW,divH 如果有另一个< div> 2。 I've been working on a random concept idea of having 6 clouds appear on a page with random comments pulled from a database. That part is easy, however I'm finding it extremely difficult to make sure the 6 clouds don't overlap each other. I've looked into Collision Detection a lot and found that there's no real suitable method of checking for a DIV within a range at X or Y before placing the new "randomly positioned" div on the page. I have my code below which I know is extremely messy right now. I currently have it checking the last DIV with reasonable success but if DIV 1 and DIV 3 for example, have similar X Y positions then It's a problem. Sorry If I'm making no sense.. here's my code and a jsFiddle$(document).ready(function () {var counter = 0;//var colide = {};var px = 0;var py = 0;var clouds = new Array("cloud1", "cloud2", "cloud3", "cloud4", "cloud5", "cloud6");var cloudtext = new Array("This is text for cloud 1 :D", "This is text for cloud 2 :D", "This is text for cloud 3 :D", "This is text for cloud 4 :D", "This is text for cloud 5 :D", "This is text for cloud 6 :D");function makeDiv() { if (counter < 6) { counter++; //var divsize = ((Math.random() * 100) + 50).toFixed(); //var color = '#' + Math.round(0xffffff * Math.random()).toString(16); $newdiv = $('<div class="' + clouds[counter - 1] + '">' + cloudtext[counter - 1] + '<div/>').css({ 'width': '354px', 'height': '202px' //'width': divsize + 'px', //'height': divsize + 'px', //'background-color': color, }); var posx = (Math.random() * ($(document).width() - 354)).toFixed(); var posy = (Math.random() * ($(document).height() - 202)).toFixed(); while (posy < 180) { posy = (Math.random() * ($(document).height() - 202)).toFixed(); } if ((px > posx + 354) || (px < posx - 354)) { if ((py > posy + 202) || (py < posy - 202)) { //alert(px + ' - ' + posx + ' px(temp) - posx(newdiv) - good to go!'); py = posy; px = posx; $newdiv.css({ 'position': 'absolute', 'left': posx + 'px', 'top': posy + 'px', 'display': 'none', 'background-image': 'url(http://www.demixgaming.co.uk/cloud/images/Cloud.png)', 'text-align': 'center', 'line-height': '202px', 'color': '#000' }).appendTo('body').fadeIn(150).delay(300, function () { makeDiv(); }); } else { counter--; px = posx; py = posy; makeDiv(); } } else { counter--; px = posx; py = posy; makeDiv(); }; }}makeDiv();});JS Fiddle - Link to JSFiddle 解决方案 The algorithm would look something like this; I might have made a mistake thoughGet the document's height and width y = docH, x = docWSubtract the <div>'s height and width, y = y - divH, x = x - divHChoose random co-ordinates curX, curY between 0..x, 0..ynewX = curX, newY = curYFor each previous <div>Call it's info prevX, prevY, prevW, prevHIf prevX < curX then newX = newX + prevWIf prevY < curY then newY = newY + prevHAppend <div> at newX, newYSave <div> info curX, curY, divW, divHIf there is another <div>, go to step 2. 这篇关于JavaScript随机定位Div的没有重叠他们的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!
10-24 20:41