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Cache ol.geom.MultiPolygon interior points

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This commit is contained in:
Tom Payne
2013-12-01 18:30:07 +01:00
parent 72df83251d
commit dd1e0c616a
1 changed files with 20 additions and 4 deletions
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24
src/ol/geom/multipolygon.js
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@@ -22,6 +22,18 @@ ol.geom.MultiPolygon = function(coordinates, opt_layout) {
*/
this.endss_ = [];
/**
* @private
* @type {number}
*/
this.interiorPointsRevision_ = -1;
/**
* @private
* @type {Array.<ol.Coordinate>}
*/
this.interiorPoints_ = null;
this.setCoordinates(coordinates, opt_layout);
};
@@ -58,10 +70,14 @@ ol.geom.MultiPolygon.prototype.getEndss = function() {
* @return {Array.<ol.Coordinate>} Interior points.
*/
ol.geom.MultiPolygon.prototype.getInteriorPoints = function() {
var ys = ol.geom.flat.linearRingssMidYs(
this.flatCoordinates, 0, this.endss_, this.stride);
return ol.geom.flat.linearRingssGetInteriorPoints(
this.flatCoordinates, 0, this.endss_, this.stride, ys);
if (this.interiorPointsRevision_ != this.revision) {
var ys = ol.geom.flat.linearRingssMidYs(
this.flatCoordinates, 0, this.endss_, this.stride);
this.interiorPoints_ = ol.geom.flat.linearRingssGetInteriorPoints(
this.flatCoordinates, 0, this.endss_, this.stride, ys);
this.interiorPointsRevision_ = this.revision;
}
return this.interiorPoints_;
};