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Use render tiles instead of source tiles for hit detection

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This commit is contained in:
Andreas Hocevar
2019-10-30 11:44:12 +01:00
parent 97d0d277fb
commit 7097a4c6ba
3 changed files with 29 additions and 35 deletions
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48
src/ol/renderer/canvas/VectorTileLayer.js
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@@ -281,6 +281,7 @@ class CanvasVectorTileLayerRenderer extends CanvasTileLayerRenderer {
executorGroups[i].dispose();
}
}
tile.hitDetectionImageData = null;
tile.executorGroups[layerUid] = [];
for (let t = 0, tt = sourceTiles.length; t < tt; ++t) {
const sourceTile = sourceTiles[t];
@@ -318,7 +319,6 @@ class CanvasVectorTileLayerRenderer extends CanvasTileLayerRenderer {
if (renderOrder && renderOrder !== builderState.renderedRenderOrder) {
features.sort(renderOrder);
}
sourceTile.hitDetectionImageData = null;
for (let i = 0, ii = features.length; i < ii; ++i) {
const feature = features[i];
if (!bufferedExtent || intersects(bufferedExtent, feature.getGeometry().getExtent())) {
@@ -405,61 +405,55 @@ class CanvasVectorTileLayerRenderer extends CanvasTileLayerRenderer {
const projection = this.renderedProjection;
const projectionExtent = projection.getExtent();
const resolution = this.renderedResolution;
const pixelRatio = this.renderedPixelRatio;
const tileGrid = source.getTileGridForProjection(projection);
const sourceTileGrid = source.getTileGrid();
const coordinate = applyTransform(this.renderedPixelToCoordinateTransform_, pixel.slice());
const tileCoord = tileGrid.getTileCoordForCoordAndResolution(coordinate, resolution);
let sourceTile;
let tile;
for (let i = 0, ii = this.renderedTiles.length; i < ii; ++i) {
if (tileCoord.toString() === this.renderedTiles[i].tileCoord.toString()) {
const tile = this.renderedTiles[i];
tile = this.renderedTiles[i];
if (tile.getState() === TileState.LOADED && tile.hifi) {
const extent = tileGrid.getTileCoordExtent(tileCoord);
const extent = tileGrid.getTileCoordExtent(tile.tileCoord);
if (source.getWrapX() && projection.canWrapX() && !containsExtent(projectionExtent, extent)) {
const worldWidth = getWidth(projectionExtent);
const worldsAway = Math.floor((coordinate[0] - projectionExtent[0]) / worldWidth);
coordinate[0] -= (worldsAway * worldWidth);
}
const sourceTiles = source.getSourceTiles(pixelRatio, projection, tile);
const sourceTileCoord = sourceTileGrid.getTileCoordForCoordAndResolution(coordinate, resolution);
for (let j = 0, jj = sourceTiles.length; j < jj; ++j) {
if (sourceTileCoord.toString() === sourceTiles[j].tileCoord.toString()) {
sourceTile = sourceTiles[j];
break;
}
}
break;
}
break;
tile = undefined;
}
}
if (!sourceTile || sourceTile.getState() !== TileState.LOADED) {
if (!tile) {
resolve([]);
return;
}
const sourceTileCoord = sourceTile.tileCoord;
const corner = getTopLeft(tileGrid.getTileCoordExtent(sourceTileCoord));
const renderScale = sourceTileGrid.getResolution(sourceTileCoord[0]) / resolution;
const extent = tileGrid.getTileCoordExtent(tile.wrappedTileCoord);
const corner = getTopLeft(extent);
const renderScale = tileGrid.getResolution(tileCoord[0]) / resolution;
const tilePixel = [
(coordinate[0] - corner[0]) / resolution / renderScale,
(corner[1] - coordinate[1]) / resolution / renderScale
];
if (!sourceTile.hitDetectionImageData) {
const tileSize = toSize(sourceTileGrid.getTileSize(sourceTileGrid.getZForResolution(resolution)));
const features = tile.getSourceTiles().reduce(function(accumulator, sourceTile) {
return accumulator.concat(sourceTile.getFeatures());
}, []);
if (!tile.hitDetectionImageData) {
const tileSize = toSize(tileGrid.getTileSize(tileGrid.getZForResolution(resolution)));
const size = [tileSize[0] / 2, tileSize[1] / 2];
const rotation = this.renderedRotation_;
const transforms = [
this.getRenderTransform(tileGrid.getTileCoordCenter(sourceTile.tileCoord),
this.getRenderTransform(tileGrid.getTileCoordCenter(tile.wrappedTileCoord),
resolution * renderScale, 0, 0.5, size[0], size[1], 0)
];
requestAnimationFrame(function() {
sourceTile.hitDetectionImageData = createHitDetectionImageData(tileSize, transforms,
sourceTile.getFeatures(), layer.getStyleFunction(),
tileGrid.getTileCoordExtent(sourceTile.tileCoord), resolution, rotation);
resolve(hitDetect(tilePixel, sourceTile.getFeatures(), sourceTile.hitDetectionImageData));
tile.hitDetectionImageData = createHitDetectionImageData(tileSize, transforms,
features, layer.getStyleFunction(),
tileGrid.getTileCoordExtent(tile.wrappedTileCoord), resolution, rotation);
resolve(hitDetect(tilePixel, features, tile.hitDetectionImageData));
});
} else {
resolve(hitDetect(tilePixel, sourceTile.getFeatures(), sourceTile.hitDetectionImageData));
resolve(hitDetect(tilePixel, features, tile.hitDetectionImageData));
}
}.bind(this));
}