解决方法
如果其他人想要找到这些标签的长度,我为每个标签制作了一些功能,测试它们,我说它们工作得很好,这就是我需要的.
var tools = {
/**
*
* Used to get the length of a rect
*
* @param el is the rect element ex $('.rect')
* @return the length of the rect in px
*/
getRectLength:function(el){
var w = el.attr('width');
var h = el.attr('height');
return (w*2)+(h*2);
},/**
*
* Used to get the length of a Polygon
*
* @param el is the Polygon element ex $('.polygon')
* @return the length of the Polygon in px
*/
getPolygonLength:function(el){
var points = el.attr('points');
points = points.split(" ");
var x1 = null,x2,y1 = null,y2,lineLength = 0,x3,y3;
for(var i = 0; i < points.length; i++){
var coords = points[i].split(",");
if(x1 == null && y1 == null){
if(/(\r\n|\n|\r)/gm.test(coords[0])){
coords[0] = coords[0].replace(/(\r\n|\n|\r)/gm,"");
coords[0] = coords[0].replace(/\s+/g,"");
}
if(/(\r\n|\n|\r)/gm.test(coords[1])){
coords[0] = coords[1].replace(/(\r\n|\n|\r)/gm,"");
coords[0] = coords[1].replace(/\s+/g,"");
}
x1 = coords[0];
y1 = coords[1];
x3 = coords[0];
y3 = coords[1];
}else{
if(coords[0] != "" && coords[1] != ""){
if(/(\r\n|\n|\r)/gm.test(coords[0])){
coords[0] = coords[0].replace(/(\r\n|\n|\r)/gm,"");
coords[0] = coords[0].replace(/\s+/g,"");
}
if(/(\r\n|\n|\r)/gm.test(coords[1])){
coords[0] = coords[1].replace(/(\r\n|\n|\r)/gm,"");
coords[0] = coords[1].replace(/\s+/g,"");
}
x2 = coords[0];
y2 = coords[1];
lineLength += Math.sqrt(Math.pow((x2-x1),2)+Math.pow((y2-y1),2));
x1 = x2;
y1 = y2;
if(i == points.length-2){
lineLength += Math.sqrt(Math.pow((x3-x1),2)+Math.pow((y3-y1),2));
}
}
}
}
return lineLength;
},/**
*
* Used to get the length of a line
*
* @param el is the line element ex $('.line')
* @return the length of the line in px
*/
getLineLength:function(el){
var x1 = el.attr('x1');
var x2 = el.attr('x2');
var y1 = el.attr('y1');
var y2 = el.attr('y2');
var lineLength = Math.sqrt(Math.pow((x2-x1),2));
return lineLength;
},/**
*
* Used to get the length of a circle
*
* @param el is the circle element
* @return the length of the circle in px
*/
getCircleLength:function(el){
var r = el.attr('r');
var circleLength = 2 * Math.PI * r;
return circleLength;
},/**
*
* Used to get the length of the path
*
* @param el is the path element
* @return the length of the path in px
*/
getPathLength:function(el){
var pathCoords = el.get(0);
var pathLength = pathCoords.getTotalLength();
return pathLength;
}
}
