problem description
Theparameter is [number, distance] to find out the point coordinates satisfied in the two-bit plane of the browser.
number: the number of coordinate points in the two-bit plane of the browser.
distance: the distance between each coordinate point must be less than this distance.
related codes
/**
* :
* :(px)
*/
function starList() {
var list = [], //list
arg = [].slice.call(arguments), //
number = arg[0] || 10, //
distance = arg[1] || 100, //
domBody = document && document.body || {
clientWidth: 1920,
clientHeight: 1080
},
maxW = domBody.clientWidth,
maxH = domBody.clientHeight;
if(typeof number!=="number"){
throw("number");
}
if(typeof distance!=="number"){
throw("number");
}
if(number*distance>Math.min(maxW,maxH)){
throw("");
}
return {
init: function (callback) {
callback = callback || function () {};
if(typeof callback!=="function"){
throw("function");
}
this.pushList(); //
callback(list);
},
/**
*
*/
pushList: function () {
//
if (list.length === number) {
return;
}
var point = this._random(maxW, maxH, 0);
if (this.judgeDistances(point)) {
list.push(point);
this.pushList();
} else {
//
this.pushList();
}
},
/**
*
*/
_random: function (maxw, maxh, min) {
return {
x: parseInt(Math.random() * (maxw - min + 1) + min, 10),
y: parseInt(Math.random() * (maxh - min + 1) + min, 10)
};
},
/**
*
*/
judgeDistances: function (point) {
var l = list.length;
while (l--) {
//distance false
if (Math.abs(list[l].x - point.x) < distance || Math.abs(list[l].y - point.y) < distance) {
return false;
}
}
return true;
}
}
};
var creatStar = starList(20,26);//265045
creatStar.init(function(list){
console.log(list);
});/ / as a result, there is a stack explosion. I would like to ask if the boss has a good solution.