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Better handling of tilegrids without extent during reprojection

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For WMTS source, the tilegrid has no extent, but the projection can
This commit is contained in:
Petr Sloup
2015-07-22 10:32:04 +02:00
parent be6bf00d74
commit ebc1bc0096
1 changed files with 14 additions and 9 deletions
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23
src/ol/reproj/tile.js
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@@ -97,6 +97,18 @@ ol.reproj.Tile = function(sourceProj, sourceTileGrid,
return;
}
if (!sourceProj.isGlobal()) {
var sourceProjExtent = sourceProj.getExtent();
if (!goog.isNull(sourceProjExtent)) {
if (goog.isNull(maxSourceExtent)) {
maxSourceExtent = sourceProjExtent;
} else {
maxSourceExtent = ol.extent.getIntersection(
maxSourceExtent, sourceProjExtent);
}
}
}
var targetResolution = targetTileGrid.getResolution(z);
var errorThresholdInPixels = ol.DEFAULT_RASTER_REPROJ_ERROR_THRESHOLD;
@@ -133,11 +145,6 @@ ol.reproj.Tile = function(sourceProj, sourceTileGrid,
this.srcZ_ = sourceTileGrid.getZForResolution(sourceResolution);
var srcExtent = this.triangulation_.calculateSourceExtent();
var sourceProjExtent = sourceProj.getExtent();
if (!sourceProj.isGlobal() && sourceProjExtent) {
srcExtent = ol.extent.getIntersection(srcExtent, sourceProjExtent);
}
if (!goog.isNull(maxSourceExtent) &&
!ol.extent.intersects(maxSourceExtent, srcExtent)) {
this.state = ol.TileState.EMPTY;
@@ -167,10 +174,8 @@ ol.reproj.Tile = function(sourceProj, sourceTileGrid,
}
var tilesRequired = xRange.length * srcRange.getHeight();
goog.asserts.assert(tilesRequired < ol.RASTER_REPROJ_MAX_SOURCE_TILES,
'reasonable number of tiles is required');
if (tilesRequired > ol.RASTER_REPROJ_MAX_SOURCE_TILES) {
if (!goog.asserts.assert(tilesRequired < ol.RASTER_REPROJ_MAX_SOURCE_TILES,
'reasonable number of tiles is required')) {
this.state = ol.TileState.ERROR;
return;
}