Automated class transform
npx lebab --replace src --transform class
This commit is contained in:
Tim Schaub
@@ -32,64 +32,355 @@ import WebGLBuffer from '../../webgl/Buffer.js';
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* @param {module:ol/layer/Tile} tileLayer Tile layer.
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* @api
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*/
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const WebGLTileLayerRenderer = function(mapRenderer, tileLayer) {
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class WebGLTileLayerRenderer {
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constructor(mapRenderer, tileLayer) {
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WebGLLayerRenderer.call(this, mapRenderer, tileLayer);
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WebGLLayerRenderer.call(this, mapRenderer, tileLayer);
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/**
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* @private
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* @type {module:ol/webgl/Fragment}
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*/
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this.fragmentShader_ = fragment;
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/**
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* @private
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* @type {module:ol/webgl/Vertex}
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*/
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this.vertexShader_ = vertex;
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/**
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* @private
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* @type {module:ol/renderer/webgl/tilelayershader/Locations}
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*/
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this.locations_ = null;
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/**
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* @private
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* @type {module:ol/webgl/Buffer}
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*/
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this.renderArrayBuffer_ = new WebGLBuffer([
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0, 0, 0, 1,
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1, 0, 1, 1,
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0, 1, 0, 0,
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1, 1, 1, 0
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]);
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/**
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* @private
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* @type {module:ol/TileRange}
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*/
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this.renderedTileRange_ = null;
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/**
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* @private
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* @type {module:ol/extent~Extent}
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*/
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this.renderedFramebufferExtent_ = null;
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/**
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* @private
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* @type {number}
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*/
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this.renderedRevision_ = -1;
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/**
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* @private
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* @type {module:ol/size~Size}
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*/
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this.tmpSize_ = [0, 0];
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}
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/**
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* @private
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* @type {module:ol/webgl/Fragment}
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* @inheritDoc
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*/
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this.fragmentShader_ = fragment;
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disposeInternal() {
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const context = this.mapRenderer.getContext();
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context.deleteBuffer(this.renderArrayBuffer_);
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WebGLLayerRenderer.prototype.disposeInternal.call(this);
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}
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/**
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* @private
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* @type {module:ol/webgl/Vertex}
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* @inheritDoc
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*/
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this.vertexShader_ = vertex;
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createLoadedTileFinder(source, projection, tiles) {
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const mapRenderer = this.mapRenderer;
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return (
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/**
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* @param {number} zoom Zoom level.
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* @param {module:ol/TileRange} tileRange Tile range.
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* @return {boolean} The tile range is fully loaded.
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*/
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function(zoom, tileRange) {
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function callback(tile) {
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const loaded = mapRenderer.isTileTextureLoaded(tile);
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if (loaded) {
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if (!tiles[zoom]) {
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tiles[zoom] = {};
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}
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tiles[zoom][tile.tileCoord.toString()] = tile;
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}
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return loaded;
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}
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return source.forEachLoadedTile(projection, zoom, tileRange, callback);
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}
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);
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}
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/**
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* @private
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* @type {module:ol/renderer/webgl/tilelayershader/Locations}
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* @inheritDoc
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*/
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this.locations_ = null;
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handleWebGLContextLost() {
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WebGLLayerRenderer.prototype.handleWebGLContextLost.call(this);
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this.locations_ = null;
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}
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/**
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* @private
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* @type {module:ol/webgl/Buffer}
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* @inheritDoc
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*/
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this.renderArrayBuffer_ = new WebGLBuffer([
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0, 0, 0, 1,
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1, 0, 1, 1,
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0, 1, 0, 0,
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1, 1, 1, 0
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]);
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prepareFrame(frameState, layerState, context) {
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const mapRenderer = this.mapRenderer;
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const gl = context.getGL();
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const viewState = frameState.viewState;
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const projection = viewState.projection;
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const tileLayer = /** @type {module:ol/layer/Tile} */ (this.getLayer());
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const tileSource = tileLayer.getSource();
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const tileGrid = tileSource.getTileGridForProjection(projection);
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const z = tileGrid.getZForResolution(viewState.resolution);
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const tileResolution = tileGrid.getResolution(z);
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const tilePixelSize =
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tileSource.getTilePixelSize(z, frameState.pixelRatio, projection);
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const pixelRatio = tilePixelSize[0] /
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toSize(tileGrid.getTileSize(z), this.tmpSize_)[0];
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const tilePixelResolution = tileResolution / pixelRatio;
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const tileGutter = tileSource.getTilePixelRatio(pixelRatio) * tileSource.getGutter(projection);
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const center = viewState.center;
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const extent = frameState.extent;
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const tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);
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let framebufferExtent;
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if (this.renderedTileRange_ &&
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this.renderedTileRange_.equals(tileRange) &&
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this.renderedRevision_ == tileSource.getRevision()) {
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framebufferExtent = this.renderedFramebufferExtent_;
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} else {
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const tileRangeSize = tileRange.getSize();
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const maxDimension = Math.max(
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tileRangeSize[0] * tilePixelSize[0],
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tileRangeSize[1] * tilePixelSize[1]);
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const framebufferDimension = roundUpToPowerOfTwo(maxDimension);
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const framebufferExtentDimension = tilePixelResolution * framebufferDimension;
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const origin = tileGrid.getOrigin(z);
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const minX = origin[0] +
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tileRange.minX * tilePixelSize[0] * tilePixelResolution;
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const minY = origin[1] +
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tileRange.minY * tilePixelSize[1] * tilePixelResolution;
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framebufferExtent = [
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minX, minY,
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minX + framebufferExtentDimension, minY + framebufferExtentDimension
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];
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this.bindFramebuffer(frameState, framebufferDimension);
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gl.viewport(0, 0, framebufferDimension, framebufferDimension);
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gl.clearColor(0, 0, 0, 0);
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gl.clear(COLOR_BUFFER_BIT);
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gl.disable(BLEND);
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const program = context.getProgram(this.fragmentShader_, this.vertexShader_);
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context.useProgram(program);
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if (!this.locations_) {
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this.locations_ = new Locations(gl, program);
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}
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context.bindBuffer(ARRAY_BUFFER, this.renderArrayBuffer_);
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gl.enableVertexAttribArray(this.locations_.a_position);
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gl.vertexAttribPointer(
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this.locations_.a_position, 2, FLOAT, false, 16, 0);
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gl.enableVertexAttribArray(this.locations_.a_texCoord);
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gl.vertexAttribPointer(
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this.locations_.a_texCoord, 2, FLOAT, false, 16, 8);
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gl.uniform1i(this.locations_.u_texture, 0);
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/**
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* @type {Object.<number, Object.<string, module:ol/Tile>>}
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*/
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const tilesToDrawByZ = {};
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tilesToDrawByZ[z] = {};
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const findLoadedTiles = this.createLoadedTileFinder(
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tileSource, projection, tilesToDrawByZ);
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const useInterimTilesOnError = tileLayer.getUseInterimTilesOnError();
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let allTilesLoaded = true;
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const tmpExtent = createEmpty();
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const tmpTileRange = new TileRange(0, 0, 0, 0);
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let childTileRange, drawable, fullyLoaded, tile, tileState;
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let x, y, tileExtent;
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for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
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for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
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tile = tileSource.getTile(z, x, y, pixelRatio, projection);
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if (layerState.extent !== undefined) {
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// ignore tiles outside layer extent
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tileExtent = tileGrid.getTileCoordExtent(tile.tileCoord, tmpExtent);
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if (!intersects(tileExtent, layerState.extent)) {
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continue;
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}
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}
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tileState = tile.getState();
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drawable = tileState == TileState.LOADED ||
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tileState == TileState.EMPTY ||
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tileState == TileState.ERROR && !useInterimTilesOnError;
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if (!drawable) {
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tile = tile.getInterimTile();
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}
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tileState = tile.getState();
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if (tileState == TileState.LOADED) {
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if (mapRenderer.isTileTextureLoaded(tile)) {
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tilesToDrawByZ[z][tile.tileCoord.toString()] = tile;
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continue;
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}
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} else if (tileState == TileState.EMPTY ||
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(tileState == TileState.ERROR &&
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!useInterimTilesOnError)) {
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continue;
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}
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allTilesLoaded = false;
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fullyLoaded = tileGrid.forEachTileCoordParentTileRange(
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tile.tileCoord, findLoadedTiles, null, tmpTileRange, tmpExtent);
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if (!fullyLoaded) {
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childTileRange = tileGrid.getTileCoordChildTileRange(
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tile.tileCoord, tmpTileRange, tmpExtent);
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if (childTileRange) {
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findLoadedTiles(z + 1, childTileRange);
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}
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}
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}
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}
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/** @type {Array.<number>} */
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const zs = Object.keys(tilesToDrawByZ).map(Number);
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zs.sort(numberSafeCompareFunction);
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const u_tileOffset = new Float32Array(4);
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for (let i = 0, ii = zs.length; i < ii; ++i) {
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const tilesToDraw = tilesToDrawByZ[zs[i]];
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for (const tileKey in tilesToDraw) {
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tile = tilesToDraw[tileKey];
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tileExtent = tileGrid.getTileCoordExtent(tile.tileCoord, tmpExtent);
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u_tileOffset[0] = 2 * (tileExtent[2] - tileExtent[0]) /
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framebufferExtentDimension;
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u_tileOffset[1] = 2 * (tileExtent[3] - tileExtent[1]) /
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framebufferExtentDimension;
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u_tileOffset[2] = 2 * (tileExtent[0] - framebufferExtent[0]) /
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framebufferExtentDimension - 1;
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u_tileOffset[3] = 2 * (tileExtent[1] - framebufferExtent[1]) /
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framebufferExtentDimension - 1;
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gl.uniform4fv(this.locations_.u_tileOffset, u_tileOffset);
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mapRenderer.bindTileTexture(tile, tilePixelSize,
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tileGutter * pixelRatio, LINEAR, LINEAR);
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gl.drawArrays(TRIANGLE_STRIP, 0, 4);
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}
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}
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if (allTilesLoaded) {
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this.renderedTileRange_ = tileRange;
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this.renderedFramebufferExtent_ = framebufferExtent;
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this.renderedRevision_ = tileSource.getRevision();
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} else {
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this.renderedTileRange_ = null;
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this.renderedFramebufferExtent_ = null;
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this.renderedRevision_ = -1;
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frameState.animate = true;
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}
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}
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this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange);
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const tileTextureQueue = mapRenderer.getTileTextureQueue();
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this.manageTilePyramid(
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frameState, tileSource, tileGrid, pixelRatio, projection, extent, z,
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tileLayer.getPreload(),
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/**
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* @param {module:ol/Tile} tile Tile.
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*/
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function(tile) {
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if (tile.getState() == TileState.LOADED &&
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!mapRenderer.isTileTextureLoaded(tile) &&
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!tileTextureQueue.isKeyQueued(tile.getKey())) {
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tileTextureQueue.enqueue([
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tile,
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tileGrid.getTileCoordCenter(tile.tileCoord),
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tileGrid.getResolution(tile.tileCoord[0]),
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tilePixelSize, tileGutter * pixelRatio
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]);
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}
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}, this);
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this.scheduleExpireCache(frameState, tileSource);
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const texCoordMatrix = this.texCoordMatrix;
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resetTransform(texCoordMatrix);
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translateTransform(texCoordMatrix,
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(Math.round(center[0] / tileResolution) * tileResolution - framebufferExtent[0]) /
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(framebufferExtent[2] - framebufferExtent[0]),
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(Math.round(center[1] / tileResolution) * tileResolution - framebufferExtent[1]) /
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(framebufferExtent[3] - framebufferExtent[1]));
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if (viewState.rotation !== 0) {
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rotateTransform(texCoordMatrix, viewState.rotation);
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}
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scaleTransform(texCoordMatrix,
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frameState.size[0] * viewState.resolution /
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(framebufferExtent[2] - framebufferExtent[0]),
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frameState.size[1] * viewState.resolution /
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(framebufferExtent[3] - framebufferExtent[1]));
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translateTransform(texCoordMatrix, -0.5, -0.5);
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return true;
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}
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/**
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* @private
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* @type {module:ol/TileRange}
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* @inheritDoc
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*/
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this.renderedTileRange_ = null;
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forEachLayerAtPixel(pixel, frameState, callback, thisArg) {
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if (!this.framebuffer) {
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return undefined;
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}
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/**
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* @private
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* @type {module:ol/extent~Extent}
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*/
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this.renderedFramebufferExtent_ = null;
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const pixelOnMapScaled = [
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pixel[0] / frameState.size[0],
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(frameState.size[1] - pixel[1]) / frameState.size[1]];
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/**
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* @private
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* @type {number}
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*/
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this.renderedRevision_ = -1;
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const pixelOnFrameBufferScaled = applyTransform(
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this.texCoordMatrix, pixelOnMapScaled.slice());
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const pixelOnFrameBuffer = [
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pixelOnFrameBufferScaled[0] * this.framebufferDimension,
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pixelOnFrameBufferScaled[1] * this.framebufferDimension];
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/**
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* @private
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* @type {module:ol/size~Size}
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*/
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this.tmpSize_ = [0, 0];
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const gl = this.mapRenderer.getContext().getGL();
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gl.bindFramebuffer(gl.FRAMEBUFFER, this.framebuffer);
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const imageData = new Uint8Array(4);
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gl.readPixels(pixelOnFrameBuffer[0], pixelOnFrameBuffer[1], 1, 1,
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gl.RGBA, gl.UNSIGNED_BYTE, imageData);
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};
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if (imageData[3] > 0) {
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return callback.call(thisArg, this.getLayer(), imageData);
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} else {
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return undefined;
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}
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}
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}
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inherits(WebGLTileLayerRenderer, WebGLLayerRenderer);
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@@ -118,296 +409,4 @@ WebGLTileLayerRenderer['create'] = function(mapRenderer, layer) {
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};
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/**
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* @inheritDoc
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*/
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WebGLTileLayerRenderer.prototype.disposeInternal = function() {
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const context = this.mapRenderer.getContext();
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context.deleteBuffer(this.renderArrayBuffer_);
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WebGLLayerRenderer.prototype.disposeInternal.call(this);
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};
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/**
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* @inheritDoc
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*/
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WebGLTileLayerRenderer.prototype.createLoadedTileFinder = function(source, projection, tiles) {
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const mapRenderer = this.mapRenderer;
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return (
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/**
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* @param {number} zoom Zoom level.
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* @param {module:ol/TileRange} tileRange Tile range.
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* @return {boolean} The tile range is fully loaded.
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*/
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function(zoom, tileRange) {
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function callback(tile) {
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const loaded = mapRenderer.isTileTextureLoaded(tile);
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if (loaded) {
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if (!tiles[zoom]) {
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tiles[zoom] = {};
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}
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tiles[zoom][tile.tileCoord.toString()] = tile;
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}
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return loaded;
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}
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return source.forEachLoadedTile(projection, zoom, tileRange, callback);
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}
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);
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};
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/**
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* @inheritDoc
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*/
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WebGLTileLayerRenderer.prototype.handleWebGLContextLost = function() {
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WebGLLayerRenderer.prototype.handleWebGLContextLost.call(this);
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this.locations_ = null;
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};
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/**
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* @inheritDoc
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*/
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WebGLTileLayerRenderer.prototype.prepareFrame = function(frameState, layerState, context) {
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const mapRenderer = this.mapRenderer;
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const gl = context.getGL();
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const viewState = frameState.viewState;
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const projection = viewState.projection;
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const tileLayer = /** @type {module:ol/layer/Tile} */ (this.getLayer());
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const tileSource = tileLayer.getSource();
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const tileGrid = tileSource.getTileGridForProjection(projection);
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const z = tileGrid.getZForResolution(viewState.resolution);
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const tileResolution = tileGrid.getResolution(z);
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const tilePixelSize =
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tileSource.getTilePixelSize(z, frameState.pixelRatio, projection);
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const pixelRatio = tilePixelSize[0] /
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toSize(tileGrid.getTileSize(z), this.tmpSize_)[0];
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const tilePixelResolution = tileResolution / pixelRatio;
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const tileGutter = tileSource.getTilePixelRatio(pixelRatio) * tileSource.getGutter(projection);
|
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|
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const center = viewState.center;
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const extent = frameState.extent;
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const tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);
|
||||
|
||||
let framebufferExtent;
|
||||
if (this.renderedTileRange_ &&
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||||
this.renderedTileRange_.equals(tileRange) &&
|
||||
this.renderedRevision_ == tileSource.getRevision()) {
|
||||
framebufferExtent = this.renderedFramebufferExtent_;
|
||||
} else {
|
||||
|
||||
const tileRangeSize = tileRange.getSize();
|
||||
|
||||
const maxDimension = Math.max(
|
||||
tileRangeSize[0] * tilePixelSize[0],
|
||||
tileRangeSize[1] * tilePixelSize[1]);
|
||||
const framebufferDimension = roundUpToPowerOfTwo(maxDimension);
|
||||
const framebufferExtentDimension = tilePixelResolution * framebufferDimension;
|
||||
const origin = tileGrid.getOrigin(z);
|
||||
const minX = origin[0] +
|
||||
tileRange.minX * tilePixelSize[0] * tilePixelResolution;
|
||||
const minY = origin[1] +
|
||||
tileRange.minY * tilePixelSize[1] * tilePixelResolution;
|
||||
framebufferExtent = [
|
||||
minX, minY,
|
||||
minX + framebufferExtentDimension, minY + framebufferExtentDimension
|
||||
];
|
||||
|
||||
this.bindFramebuffer(frameState, framebufferDimension);
|
||||
gl.viewport(0, 0, framebufferDimension, framebufferDimension);
|
||||
|
||||
gl.clearColor(0, 0, 0, 0);
|
||||
gl.clear(COLOR_BUFFER_BIT);
|
||||
gl.disable(BLEND);
|
||||
|
||||
const program = context.getProgram(this.fragmentShader_, this.vertexShader_);
|
||||
context.useProgram(program);
|
||||
if (!this.locations_) {
|
||||
this.locations_ = new Locations(gl, program);
|
||||
}
|
||||
|
||||
context.bindBuffer(ARRAY_BUFFER, this.renderArrayBuffer_);
|
||||
gl.enableVertexAttribArray(this.locations_.a_position);
|
||||
gl.vertexAttribPointer(
|
||||
this.locations_.a_position, 2, FLOAT, false, 16, 0);
|
||||
gl.enableVertexAttribArray(this.locations_.a_texCoord);
|
||||
gl.vertexAttribPointer(
|
||||
this.locations_.a_texCoord, 2, FLOAT, false, 16, 8);
|
||||
gl.uniform1i(this.locations_.u_texture, 0);
|
||||
|
||||
/**
|
||||
* @type {Object.<number, Object.<string, module:ol/Tile>>}
|
||||
*/
|
||||
const tilesToDrawByZ = {};
|
||||
tilesToDrawByZ[z] = {};
|
||||
|
||||
const findLoadedTiles = this.createLoadedTileFinder(
|
||||
tileSource, projection, tilesToDrawByZ);
|
||||
|
||||
const useInterimTilesOnError = tileLayer.getUseInterimTilesOnError();
|
||||
let allTilesLoaded = true;
|
||||
const tmpExtent = createEmpty();
|
||||
const tmpTileRange = new TileRange(0, 0, 0, 0);
|
||||
let childTileRange, drawable, fullyLoaded, tile, tileState;
|
||||
let x, y, tileExtent;
|
||||
for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
|
||||
for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
|
||||
|
||||
tile = tileSource.getTile(z, x, y, pixelRatio, projection);
|
||||
if (layerState.extent !== undefined) {
|
||||
// ignore tiles outside layer extent
|
||||
tileExtent = tileGrid.getTileCoordExtent(tile.tileCoord, tmpExtent);
|
||||
if (!intersects(tileExtent, layerState.extent)) {
|
||||
continue;
|
||||
}
|
||||
}
|
||||
tileState = tile.getState();
|
||||
drawable = tileState == TileState.LOADED ||
|
||||
tileState == TileState.EMPTY ||
|
||||
tileState == TileState.ERROR && !useInterimTilesOnError;
|
||||
if (!drawable) {
|
||||
tile = tile.getInterimTile();
|
||||
}
|
||||
tileState = tile.getState();
|
||||
if (tileState == TileState.LOADED) {
|
||||
if (mapRenderer.isTileTextureLoaded(tile)) {
|
||||
tilesToDrawByZ[z][tile.tileCoord.toString()] = tile;
|
||||
continue;
|
||||
}
|
||||
} else if (tileState == TileState.EMPTY ||
|
||||
(tileState == TileState.ERROR &&
|
||||
!useInterimTilesOnError)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
allTilesLoaded = false;
|
||||
fullyLoaded = tileGrid.forEachTileCoordParentTileRange(
|
||||
tile.tileCoord, findLoadedTiles, null, tmpTileRange, tmpExtent);
|
||||
if (!fullyLoaded) {
|
||||
childTileRange = tileGrid.getTileCoordChildTileRange(
|
||||
tile.tileCoord, tmpTileRange, tmpExtent);
|
||||
if (childTileRange) {
|
||||
findLoadedTiles(z + 1, childTileRange);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/** @type {Array.<number>} */
|
||||
const zs = Object.keys(tilesToDrawByZ).map(Number);
|
||||
zs.sort(numberSafeCompareFunction);
|
||||
const u_tileOffset = new Float32Array(4);
|
||||
for (let i = 0, ii = zs.length; i < ii; ++i) {
|
||||
const tilesToDraw = tilesToDrawByZ[zs[i]];
|
||||
for (const tileKey in tilesToDraw) {
|
||||
tile = tilesToDraw[tileKey];
|
||||
tileExtent = tileGrid.getTileCoordExtent(tile.tileCoord, tmpExtent);
|
||||
u_tileOffset[0] = 2 * (tileExtent[2] - tileExtent[0]) /
|
||||
framebufferExtentDimension;
|
||||
u_tileOffset[1] = 2 * (tileExtent[3] - tileExtent[1]) /
|
||||
framebufferExtentDimension;
|
||||
u_tileOffset[2] = 2 * (tileExtent[0] - framebufferExtent[0]) /
|
||||
framebufferExtentDimension - 1;
|
||||
u_tileOffset[3] = 2 * (tileExtent[1] - framebufferExtent[1]) /
|
||||
framebufferExtentDimension - 1;
|
||||
gl.uniform4fv(this.locations_.u_tileOffset, u_tileOffset);
|
||||
mapRenderer.bindTileTexture(tile, tilePixelSize,
|
||||
tileGutter * pixelRatio, LINEAR, LINEAR);
|
||||
gl.drawArrays(TRIANGLE_STRIP, 0, 4);
|
||||
}
|
||||
}
|
||||
|
||||
if (allTilesLoaded) {
|
||||
this.renderedTileRange_ = tileRange;
|
||||
this.renderedFramebufferExtent_ = framebufferExtent;
|
||||
this.renderedRevision_ = tileSource.getRevision();
|
||||
} else {
|
||||
this.renderedTileRange_ = null;
|
||||
this.renderedFramebufferExtent_ = null;
|
||||
this.renderedRevision_ = -1;
|
||||
frameState.animate = true;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange);
|
||||
const tileTextureQueue = mapRenderer.getTileTextureQueue();
|
||||
this.manageTilePyramid(
|
||||
frameState, tileSource, tileGrid, pixelRatio, projection, extent, z,
|
||||
tileLayer.getPreload(),
|
||||
/**
|
||||
* @param {module:ol/Tile} tile Tile.
|
||||
*/
|
||||
function(tile) {
|
||||
if (tile.getState() == TileState.LOADED &&
|
||||
!mapRenderer.isTileTextureLoaded(tile) &&
|
||||
!tileTextureQueue.isKeyQueued(tile.getKey())) {
|
||||
tileTextureQueue.enqueue([
|
||||
tile,
|
||||
tileGrid.getTileCoordCenter(tile.tileCoord),
|
||||
tileGrid.getResolution(tile.tileCoord[0]),
|
||||
tilePixelSize, tileGutter * pixelRatio
|
||||
]);
|
||||
}
|
||||
}, this);
|
||||
this.scheduleExpireCache(frameState, tileSource);
|
||||
|
||||
const texCoordMatrix = this.texCoordMatrix;
|
||||
resetTransform(texCoordMatrix);
|
||||
translateTransform(texCoordMatrix,
|
||||
(Math.round(center[0] / tileResolution) * tileResolution - framebufferExtent[0]) /
|
||||
(framebufferExtent[2] - framebufferExtent[0]),
|
||||
(Math.round(center[1] / tileResolution) * tileResolution - framebufferExtent[1]) /
|
||||
(framebufferExtent[3] - framebufferExtent[1]));
|
||||
if (viewState.rotation !== 0) {
|
||||
rotateTransform(texCoordMatrix, viewState.rotation);
|
||||
}
|
||||
scaleTransform(texCoordMatrix,
|
||||
frameState.size[0] * viewState.resolution /
|
||||
(framebufferExtent[2] - framebufferExtent[0]),
|
||||
frameState.size[1] * viewState.resolution /
|
||||
(framebufferExtent[3] - framebufferExtent[1]));
|
||||
translateTransform(texCoordMatrix, -0.5, -0.5);
|
||||
|
||||
return true;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
WebGLTileLayerRenderer.prototype.forEachLayerAtPixel = function(pixel, frameState, callback, thisArg) {
|
||||
if (!this.framebuffer) {
|
||||
return undefined;
|
||||
}
|
||||
|
||||
const pixelOnMapScaled = [
|
||||
pixel[0] / frameState.size[0],
|
||||
(frameState.size[1] - pixel[1]) / frameState.size[1]];
|
||||
|
||||
const pixelOnFrameBufferScaled = applyTransform(
|
||||
this.texCoordMatrix, pixelOnMapScaled.slice());
|
||||
const pixelOnFrameBuffer = [
|
||||
pixelOnFrameBufferScaled[0] * this.framebufferDimension,
|
||||
pixelOnFrameBufferScaled[1] * this.framebufferDimension];
|
||||
|
||||
const gl = this.mapRenderer.getContext().getGL();
|
||||
gl.bindFramebuffer(gl.FRAMEBUFFER, this.framebuffer);
|
||||
const imageData = new Uint8Array(4);
|
||||
gl.readPixels(pixelOnFrameBuffer[0], pixelOnFrameBuffer[1], 1, 1,
|
||||
gl.RGBA, gl.UNSIGNED_BYTE, imageData);
|
||||
|
||||
if (imageData[3] > 0) {
|
||||
return callback.call(thisArg, this.getLayer(), imageData);
|
||||
} else {
|
||||
return undefined;
|
||||
}
|
||||
};
|
||||
export default WebGLTileLayerRenderer;
|
||||
|
||||
Reference in New Issue
Block a user