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Add ol.renderer.vector.getSquaredTolerance and ol.SIMPLIFY_TOLERANCE

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This commit is contained in:
Andreas Hocevar
2014-06-27 12:10:46 +02:00
parent 2171c92b5c
commit f67767aaf0
7 changed files with 45 additions and 21 deletions
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13
src/ol/renderer/canvas/canvasvectorlayerrenderer.js
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@@ -206,9 +206,10 @@ ol.renderer.canvas.VectorLayer.prototype.prepareFrame =
if (!goog.isDef(styleFunction)) {
styleFunction = ol.feature.defaultStyleFunction;
}
var tolerance = resolution / (2 * pixelRatio);
var replayGroup =
new ol.render.canvas.ReplayGroup(tolerance, extent, resolution);
new ol.render.canvas.ReplayGroup(
ol.renderer.vector.getTolerance(resolution, pixelRatio), extent,
resolution);
vectorSource.loadFeatures(extent, resolution, projection);
var renderFeature =
/**
@@ -261,14 +262,12 @@ ol.renderer.canvas.VectorLayer.prototype.renderFeature =
if (!goog.isDefAndNotNull(styles)) {
return false;
}
// simplify to a tolerance of half a device pixel
var squaredTolerance =
resolution * resolution / (4 * pixelRatio * pixelRatio);
var i, ii, loading = false;
for (i = 0, ii = styles.length; i < ii; ++i) {
loading = ol.renderer.vector.renderFeature(
replayGroup, feature, styles[i], squaredTolerance, feature,
this.handleImageChange_, this) || loading;
replayGroup, feature, styles[i],
ol.renderer.vector.getSquaredTolerance(resolution, pixelRatio),
feature, this.handleImageChange_, this) || loading;
}
return loading;
};