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Finish polygon drawing on last point

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This commit is contained in:
oterral
2014-01-13 14:49:18 +01:00
parent 913038a124
commit cbe1650c79
1 changed files with 22 additions and 8 deletions
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30
src/ol/interaction/drawinteraction.js
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@@ -309,20 +309,30 @@ ol.interaction.Draw.prototype.atFinish_ = function(event) {
if (!goog.isNull(this.sketchFeature_)) {
var geometry = this.sketchFeature_.getGeometry();
var potentiallyDone = false;
var potentiallyFinishCoordinates = [this.finishCoordinate_];
if (this.mode_ === ol.interaction.DrawMode.LINE_STRING) {
goog.asserts.assertInstanceof(geometry, ol.geom.LineString);
potentiallyDone = geometry.getCoordinates().length > 2;
} else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
goog.asserts.assertInstanceof(geometry, ol.geom.Polygon);
potentiallyDone = geometry.getCoordinates()[0].length > 3;
potentiallyDone = geometry.getCoordinates()[0].length > 2;
potentiallyFinishCoordinates = [this.sketchRawPolygon_[0][0],
this.sketchRawPolygon_[0][this.sketchRawPolygon_[0].length - 2]];
}
if (potentiallyDone) {
var map = event.map;
var finishPixel = map.getPixelFromCoordinate(this.finishCoordinate_);
var pixel = event.getPixel();
var dx = pixel[0] - finishPixel[0];
var dy = pixel[1] - finishPixel[1];
at = Math.sqrt(dx * dx + dy * dy) <= this.snapTolerance_;
for (var i = 0, ii = potentiallyFinishCoordinates.length; i < ii; i++) {
var finishCoordinate = potentiallyFinishCoordinates[i];
var finishPixel = map.getPixelFromCoordinate(finishCoordinate);
var pixel = event.getPixel();
var dx = pixel[0] - finishPixel[0];
var dy = pixel[1] - finishPixel[1];
at = Math.sqrt(dx * dx + dy * dy) <= this.snapTolerance_;
if (at) {
this.finishCoordinate_ = finishCoordinate;
break;
}
}
}
}
return at;
@@ -453,9 +463,13 @@ ol.interaction.Draw.prototype.finishDrawing_ = function(event) {
geometry.setCoordinates(coordinates);
} else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
goog.asserts.assertInstanceof(geometry, ol.geom.Polygon);
// When we finish drawing a polygon on the last point,
// the last coordinate is duplicated as for LineString
// we force the replacement by the first point
this.sketchRawPolygon_[0].pop();
this.sketchRawPolygon_[0].push(this.sketchRawPolygon_[0][0]);
geometry.setCoordinates(this.sketchRawPolygon_);
coordinates = geometry.getCoordinates();
// force clockwise order for exterior ring
sketchFeature.setGeometry(new ol.geom.Polygon(coordinates));
}
// cast multi-part geometries