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Do not clip canvas for vector layers when wrapping the world

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This commit is contained in:
Andreas Hocevar
2015-06-19 14:55:20 +02:00
parent aa90c97ba3
commit 7463a58066
4 changed files with 87 additions and 11 deletions
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14
src/ol/renderer/canvas/canvasvectorlayerrenderer.js
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@@ -135,6 +135,8 @@ ol.renderer.canvas.VectorLayer.prototype.composeFrame =
skippedFeatureUids);
startX -= worldWidth;
}
// restore original transform for render and compose events
transform = this.getTransform(frameState, 0);
}
if (replayContext != context) {
@@ -235,9 +237,15 @@ ol.renderer.canvas.VectorLayer.prototype.prepareFrame =
if (vectorSource.getWrapX() && viewState.projection.canWrapX() &&
!ol.extent.containsExtent(projectionExtent, frameState.extent)) {
// do not clip when the view crosses the -180° or 180° meridians
extent[0] = projectionExtent[0];
extent[2] = projectionExtent[2];
// For the replay group, we need an extent that intersects the real world
// (-180° to +180°). To support geometries in a coordinate range from -540°
// to +540°, we add at least 1 world width on each side of the projection
// extent. If the viewport is wider than the world, we need to add half of
// the viewport width to make sure we cover the whole viewport.
var worldWidth = ol.extent.getWidth(projectionExtent);
var buffer = Math.max(ol.extent.getWidth(extent) / 2, worldWidth);
extent[0] = projectionExtent[0] - buffer;
extent[2] = projectionExtent[2] + buffer;
}
if (!this.dirty_ &&