<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=iso-8859-1"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EstiloCorreioEletrnico17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 3.0cm 70.85pt 3.0cm;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=PT link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi guys,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I wanted to know if it’s possible to dynamically set a linestrings label to the center of the linestring. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Currently I have something like this:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> labelDeltaPixels: function (feature) {<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> var vert = feature.geometry.getVertices();<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> var startPoint = vert[0],<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> middlePoint;<o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span lang=EN-US style='color:#5B9BD5'>//If more than 1 point get a middle point<o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span lang=EN-US style='color:#5B9BD5'>//else calculate the middle coordenate<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> if(vert.length > 2){<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> middlePoint = vert[Math.floor(vert.length / 2)];<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> }else {<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> middlePoint = new OpenLayers.Geometry.Point((vert[0].x + vert[1].x)/2, (vert[0].y + vert[1].y)/2)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> }<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='color:#5B9BD5'> //This is where I am having problems the values obtain from pixelStart and PixelMiddle don’t coincide with the middle of the linestring, it’s not close at all, the label continues at the start point.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> var pixelStart = feature.layer.map.getPixelFromLonLat(new OpenLayers.LonLat(startPoint.x.toFixed(5) , startPoint.y.toFixed(5) ));<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> var pixelMiddle = feature.layer.map.getPixelFromLonLat(new OpenLayers.LonLat(middlePoint.x.toFixed(5) , middlePoint.y.toFixed(5) ));<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> var deltaX = pixelMiddle.x- pixelStart.x;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> var deltaY = pixelStart.y - pixelMiddle.y;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> return {<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> x: deltaX,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> y: deltaY<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> };<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US> }<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Any help is appreciated.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks<o:p></o:p></span></p></div></body></html>