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Implement getChecksum for RegularShape

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This commit is contained in:
tsauerwein
2014-11-13 10:50:07 +01:00
parent 7e9dd65f8b
commit ea65f65b37
2 changed files with 221 additions and 0 deletions
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38
src/ol/style/regularshapestyle.js
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@@ -18,12 +18,19 @@ goog.require('ol.style.Stroke');
* @constructor
* @param {olx.style.RegularShapeOptions=} opt_options Options.
* @extends {ol.style.Image}
* @implements {ol.structs.IHasChecksum}
* @api
*/
ol.style.RegularShape = function(opt_options) {
var options = goog.isDef(opt_options) ? opt_options : {};
/**
* @private
* @type {Array.<ol.structs.Checksum>|null}
*/
this.checksums_ = null;
/**
* @private
* @type {HTMLCanvasElement}
@@ -305,3 +312,34 @@ ol.style.RegularShape.prototype.render_ = function() {
return size;
};
/**
* @inheritDoc
*/
ol.style.RegularShape.prototype.getChecksum = function() {
var strokeChecksum = !goog.isNull(this.stroke_) ?
this.stroke_.getChecksum() : '-';
var fillChecksum = !goog.isNull(this.fill_) ?
this.fill_.getChecksum() : '-';
var recalculate = goog.isNull(this.checksums_) ||
(strokeChecksum != this.checksums_[1] ||
fillChecksum != this.checksums_[2] ||
this.radius_ != this.checksums_[3] ||
this.radius2_ != this.checksums_[4] ||
this.angle_ != this.checksums_[5] ||
this.points_ != this.checksums_[6]);
if (recalculate) {
var checksum = 'r' + strokeChecksum + fillChecksum +
(goog.isDef(this.radius_) ? this.radius_.toString() : '-') +
(goog.isDef(this.radius2_) ? this.radius2_.toString() : '-') +
(goog.isDef(this.angle_) ? this.angle_.toString() : '-') +
(goog.isDef(this.points_) ? this.points_.toString() : '-');
this.checksums_ = [checksum, strokeChecksum, fillChecksum,
this.radius_, this.radius2_, this.angle_, this.points_];
}
return this.checksums_[0];
};