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Maintain M and Z coordinates in ol.geom.Circle#getClosestPoint

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Tom Payne
2014-01-20 08:55:28 +01:00
parent d9437e469d
commit 5bee477734
2 changed files with 42 additions and 8 deletions
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19
src/ol/geom/circle.js
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@@ -39,21 +39,24 @@ ol.geom.Circle.prototype.clone = function() {
ol.geom.Circle.prototype.closestPointXY =
function(x, y, closestPoint, minSquaredDistance) {
var flatCoordinates = this.flatCoordinates;
var radius = flatCoordinates[this.stride] - flatCoordinates[0];
var dx = x - flatCoordinates[0];
var dy = y - flatCoordinates[1];
var d = Math.sqrt(dx * dx + dy * dy);
var distance = Math.max(d, 0);
var squaredDistance = distance * distance;
var squaredDistance = dx * dx + dy * dy;
if (squaredDistance < minSquaredDistance) {
if (d === 0) {
closestPoint[0] = flatCoordinates[0];
closestPoint[1] = flatCoordinates[1];
var i;
if (squaredDistance === 0) {
for (i = 0; i < this.stride; ++i) {
closestPoint[i] = flatCoordinates[i];
}
} else {
var delta = radius / d;
var delta = this.getRadius() / Math.sqrt(squaredDistance);
closestPoint[0] = flatCoordinates[0] + delta * dx;
closestPoint[1] = flatCoordinates[1] + delta * dy;
for (i = 2; i < this.stride; ++i) {
closestPoint[i] = flatCoordinates[i];
}
}
closestPoint.length = this.stride;
return squaredDistance;
} else {
return minSquaredDistance;