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Keep transformed coordinates within valid y range

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This commit is contained in:
Tim Schaub
2016-10-05 07:26:41 -06:00
parent 5cdbd76b1e
commit 321c65b023
2 changed files with 41 additions and 2 deletions
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8
src/ol/proj/epsg3857.js
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@@ -118,8 +118,14 @@ ol.proj.EPSG3857.fromEPSG4326 = function(input, opt_output, opt_dimension) {
'modulus of output.length with dimension should be 0');
for (var i = 0; i < length; i += dimension) {
output[i] = ol.proj.EPSG3857.RADIUS * Math.PI * input[i] / 180;
output[i + 1] = ol.proj.EPSG3857.RADIUS *
var y = ol.proj.EPSG3857.RADIUS *
Math.log(Math.tan(Math.PI * (input[i + 1] + 90) / 360));
if (y > ol.proj.EPSG3857.HALF_SIZE) {
y = ol.proj.EPSG3857.HALF_SIZE;
} else if (y < -ol.proj.EPSG3857.HALF_SIZE) {
y = -ol.proj.EPSG3857.HALF_SIZE;
}
output[i + 1] = y;
}
return output;
};