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Always quantize all polygons

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Tom Payne
2013-12-17 17:46:43 +01:00
parent dc69e02438
commit 9bc92b2166
1 changed files with 13 additions and 0 deletions
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13
src/ol/render/canvas/canvasreplay.js
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@@ -14,6 +14,7 @@ goog.require('ol.array');
goog.require('ol.color');
goog.require('ol.extent');
goog.require('ol.geom.flat');
goog.require('ol.geom.simplify');
goog.require('ol.render.IRender');
goog.require('ol.render.IReplayGroup');
goog.require('ol.render.canvas');
@@ -984,6 +985,18 @@ ol.render.canvas.PolygonReplay.prototype.finish = function() {
goog.asserts.assert(!goog.isNull(this.state_));
this.reverseHitDetectionInstructions_();
this.state_ = null;
// We want to preserve topology when drawing polygons. Polygons are
// simplified using quantization and point elimination. However, we might
// have received a mix of quantized and non-quantized geometries, so ensure
// that all are quantized by quantizing all coordinates in the batch.
var tolerance = this.tolerance;
if (tolerance !== 0) {
var coordinates = this.coordinates;
var i, ii;
for (i = 0, ii = coordinates.length; i < ii; ++i) {
coordinates[i] = ol.geom.simplify.snap(coordinates[i], tolerance);
}
}
};