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485 lines
16 KiB
485 lines
16 KiB
/**
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* @module ol/renderer/vector
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*/
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import ImageState from '../ImageState.js';
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import {getUid} from '../util.js';
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/**
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* Feature callback. The callback will be called with three arguments. The first
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* argument is one {@link module:ol/Feature~Feature feature} or {@link module:ol/render/Feature~RenderFeature render feature}
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* at the pixel, the second is the {@link module:ol/layer/Layer~Layer layer} of the feature and will be null for
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* unmanaged layers. The third is the {@link module:ol/geom/SimpleGeometry~SimpleGeometry} of the feature. For features
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* with a GeometryCollection geometry, it will be the first detected geometry from the collection.
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* @template T
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* @typedef {function(import("../Feature.js").FeatureLike, import("../layer/Layer.js").default<import("../source/Source").default>, import("../geom/SimpleGeometry.js").default): T} FeatureCallback
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*/
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/**
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* Tolerance for geometry simplification in device pixels.
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* @type {number}
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*/
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const SIMPLIFY_TOLERANCE = 0.5;
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/**
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* @const
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* @type {Object<import("../geom/Geometry.js").Type,
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* function(import("../render/canvas/BuilderGroup.js").default, import("../geom/Geometry.js").default,
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* import("../style/Style.js").default, Object): void>}
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*/
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const GEOMETRY_RENDERERS = {
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'Point': renderPointGeometry,
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'LineString': renderLineStringGeometry,
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'Polygon': renderPolygonGeometry,
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'MultiPoint': renderMultiPointGeometry,
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'MultiLineString': renderMultiLineStringGeometry,
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'MultiPolygon': renderMultiPolygonGeometry,
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'GeometryCollection': renderGeometryCollectionGeometry,
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'Circle': renderCircleGeometry,
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};
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/**
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* @param {import("../Feature.js").FeatureLike} feature1 Feature 1.
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* @param {import("../Feature.js").FeatureLike} feature2 Feature 2.
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* @return {number} Order.
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*/
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export function defaultOrder(feature1, feature2) {
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return parseInt(getUid(feature1), 10) - parseInt(getUid(feature2), 10);
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}
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/**
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* @param {number} resolution Resolution.
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* @param {number} pixelRatio Pixel ratio.
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* @return {number} Squared pixel tolerance.
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*/
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export function getSquaredTolerance(resolution, pixelRatio) {
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const tolerance = getTolerance(resolution, pixelRatio);
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return tolerance * tolerance;
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}
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/**
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* @param {number} resolution Resolution.
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* @param {number} pixelRatio Pixel ratio.
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* @return {number} Pixel tolerance.
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*/
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export function getTolerance(resolution, pixelRatio) {
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return (SIMPLIFY_TOLERANCE * resolution) / pixelRatio;
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}
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/**
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* @param {import("../render/canvas/BuilderGroup.js").default} builderGroup Builder group.
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* @param {import("../geom/Circle.js").default} geometry Geometry.
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* @param {import("../style/Style.js").default} style Style.
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* @param {import("../Feature.js").default} feature Feature.
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* @param {import("../render/canvas/BuilderGroup.js").default} [declutterBuilderGroup] Builder for decluttering.
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*/
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function renderCircleGeometry(
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builderGroup,
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geometry,
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style,
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feature,
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declutterBuilderGroup
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) {
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const fillStyle = style.getFill();
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const strokeStyle = style.getStroke();
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if (fillStyle || strokeStyle) {
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const circleReplay = builderGroup.getBuilder(style.getZIndex(), 'Circle');
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circleReplay.setFillStrokeStyle(fillStyle, strokeStyle);
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circleReplay.drawCircle(geometry, feature);
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}
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const textStyle = style.getText();
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if (textStyle && textStyle.getText()) {
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const textReplay = (declutterBuilderGroup || builderGroup).getBuilder(
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style.getZIndex(),
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'Text'
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);
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textReplay.setTextStyle(textStyle);
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textReplay.drawText(geometry, feature);
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}
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}
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/**
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* @param {import("../render/canvas/BuilderGroup.js").default} replayGroup Replay group.
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* @param {import("../Feature.js").FeatureLike} feature Feature.
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* @param {import("../style/Style.js").default} style Style.
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* @param {number} squaredTolerance Squared tolerance.
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* @param {function(import("../events/Event.js").default): void} listener Listener function.
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* @param {import("../proj.js").TransformFunction} [transform] Transform from user to view projection.
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* @param {import("../render/canvas/BuilderGroup.js").default} [declutterBuilderGroup] Builder for decluttering.
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* @return {boolean} `true` if style is loading.
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*/
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export function renderFeature(
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replayGroup,
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feature,
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style,
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squaredTolerance,
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listener,
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transform,
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declutterBuilderGroup
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) {
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let loading = false;
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const imageStyle = style.getImage();
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if (imageStyle) {
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const imageState = imageStyle.getImageState();
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if (imageState == ImageState.LOADED || imageState == ImageState.ERROR) {
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imageStyle.unlistenImageChange(listener);
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} else {
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if (imageState == ImageState.IDLE) {
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imageStyle.load();
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}
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imageStyle.listenImageChange(listener);
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loading = true;
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}
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}
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renderFeatureInternal(
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replayGroup,
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feature,
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style,
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squaredTolerance,
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transform,
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declutterBuilderGroup
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);
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return loading;
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}
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/**
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* @param {import("../render/canvas/BuilderGroup.js").default} replayGroup Replay group.
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* @param {import("../Feature.js").FeatureLike} feature Feature.
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* @param {import("../style/Style.js").default} style Style.
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* @param {number} squaredTolerance Squared tolerance.
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* @param {import("../proj.js").TransformFunction} [transform] Optional transform function.
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* @param {import("../render/canvas/BuilderGroup.js").default} [declutterBuilderGroup] Builder for decluttering.
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*/
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function renderFeatureInternal(
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replayGroup,
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feature,
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style,
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squaredTolerance,
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transform,
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declutterBuilderGroup
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) {
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const geometry = style.getGeometryFunction()(feature);
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if (!geometry) {
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return;
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}
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const simplifiedGeometry = geometry.simplifyTransformed(
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squaredTolerance,
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transform
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);
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const renderer = style.getRenderer();
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if (renderer) {
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renderGeometry(replayGroup, simplifiedGeometry, style, feature);
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} else {
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const geometryRenderer = GEOMETRY_RENDERERS[simplifiedGeometry.getType()];
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geometryRenderer(
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replayGroup,
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simplifiedGeometry,
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style,
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feature,
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declutterBuilderGroup
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);
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}
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}
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/**
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* @param {import("../render/canvas/BuilderGroup.js").default} replayGroup Replay group.
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* @param {import("../geom/Geometry.js").default|import("../render/Feature.js").default} geometry Geometry.
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* @param {import("../style/Style.js").default} style Style.
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* @param {import("../Feature.js").FeatureLike} feature Feature.
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*/
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function renderGeometry(replayGroup, geometry, style, feature) {
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if (geometry.getType() == 'GeometryCollection') {
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const geometries =
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/** @type {import("../geom/GeometryCollection.js").default} */ (
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geometry
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).getGeometries();
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for (let i = 0, ii = geometries.length; i < ii; ++i) {
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renderGeometry(replayGroup, geometries[i], style, feature);
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}
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return;
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}
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const replay = replayGroup.getBuilder(style.getZIndex(), 'Default');
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replay.drawCustom(
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/** @type {import("../geom/SimpleGeometry.js").default} */ (geometry),
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feature,
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style.getRenderer(),
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style.getHitDetectionRenderer()
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);
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}
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/**
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* @param {import("../render/canvas/BuilderGroup.js").default} replayGroup Replay group.
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* @param {import("../geom/GeometryCollection.js").default} geometry Geometry.
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* @param {import("../style/Style.js").default} style Style.
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* @param {import("../Feature.js").default} feature Feature.
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* @param {import("../render/canvas/BuilderGroup.js").default} [declutterBuilderGroup] Builder for decluttering.
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*/
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function renderGeometryCollectionGeometry(
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replayGroup,
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geometry,
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style,
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feature,
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declutterBuilderGroup
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) {
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const geometries = geometry.getGeometriesArray();
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let i, ii;
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for (i = 0, ii = geometries.length; i < ii; ++i) {
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const geometryRenderer = GEOMETRY_RENDERERS[geometries[i].getType()];
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geometryRenderer(
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replayGroup,
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geometries[i],
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style,
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feature,
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declutterBuilderGroup
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);
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}
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}
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/**
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* @param {import("../render/canvas/BuilderGroup.js").default} builderGroup Replay group.
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* @param {import("../geom/LineString.js").default|import("../render/Feature.js").default} geometry Geometry.
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* @param {import("../style/Style.js").default} style Style.
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* @param {import("../Feature.js").FeatureLike} feature Feature.
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* @param {import("../render/canvas/BuilderGroup.js").default} [declutterBuilderGroup] Builder for decluttering.
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*/
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function renderLineStringGeometry(
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builderGroup,
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geometry,
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style,
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feature,
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declutterBuilderGroup
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) {
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const strokeStyle = style.getStroke();
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if (strokeStyle) {
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const lineStringReplay = builderGroup.getBuilder(
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style.getZIndex(),
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'LineString'
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);
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lineStringReplay.setFillStrokeStyle(null, strokeStyle);
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lineStringReplay.drawLineString(geometry, feature);
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}
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const textStyle = style.getText();
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if (textStyle && textStyle.getText()) {
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const textReplay = (declutterBuilderGroup || builderGroup).getBuilder(
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style.getZIndex(),
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'Text'
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);
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textReplay.setTextStyle(textStyle);
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textReplay.drawText(geometry, feature);
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}
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}
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/**
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* @param {import("../render/canvas/BuilderGroup.js").default} builderGroup Replay group.
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* @param {import("../geom/MultiLineString.js").default|import("../render/Feature.js").default} geometry Geometry.
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* @param {import("../style/Style.js").default} style Style.
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* @param {import("../Feature.js").FeatureLike} feature Feature.
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* @param {import("../render/canvas/BuilderGroup.js").default} [declutterBuilderGroup] Builder for decluttering.
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*/
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function renderMultiLineStringGeometry(
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builderGroup,
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geometry,
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style,
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feature,
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declutterBuilderGroup
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) {
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const strokeStyle = style.getStroke();
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if (strokeStyle) {
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const lineStringReplay = builderGroup.getBuilder(
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style.getZIndex(),
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'LineString'
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);
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lineStringReplay.setFillStrokeStyle(null, strokeStyle);
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lineStringReplay.drawMultiLineString(geometry, feature);
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}
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const textStyle = style.getText();
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if (textStyle && textStyle.getText()) {
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const textReplay = (declutterBuilderGroup || builderGroup).getBuilder(
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style.getZIndex(),
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'Text'
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);
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textReplay.setTextStyle(textStyle);
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textReplay.drawText(geometry, feature);
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}
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}
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/**
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* @param {import("../render/canvas/BuilderGroup.js").default} builderGroup Replay group.
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* @param {import("../geom/MultiPolygon.js").default} geometry Geometry.
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* @param {import("../style/Style.js").default} style Style.
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* @param {import("../Feature.js").default} feature Feature.
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* @param {import("../render/canvas/BuilderGroup.js").default} [declutterBuilderGroup] Builder for decluttering.
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*/
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function renderMultiPolygonGeometry(
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builderGroup,
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geometry,
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style,
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feature,
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declutterBuilderGroup
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) {
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const fillStyle = style.getFill();
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const strokeStyle = style.getStroke();
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if (strokeStyle || fillStyle) {
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const polygonReplay = builderGroup.getBuilder(style.getZIndex(), 'Polygon');
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polygonReplay.setFillStrokeStyle(fillStyle, strokeStyle);
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polygonReplay.drawMultiPolygon(geometry, feature);
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}
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const textStyle = style.getText();
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if (textStyle && textStyle.getText()) {
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const textReplay = (declutterBuilderGroup || builderGroup).getBuilder(
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style.getZIndex(),
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'Text'
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);
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textReplay.setTextStyle(textStyle);
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textReplay.drawText(geometry, feature);
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}
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}
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/**
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* @param {import("../render/canvas/BuilderGroup.js").default} builderGroup Replay group.
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* @param {import("../geom/Point.js").default|import("../render/Feature.js").default} geometry Geometry.
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* @param {import("../style/Style.js").default} style Style.
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* @param {import("../Feature.js").FeatureLike} feature Feature.
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* @param {import("../render/canvas/BuilderGroup.js").default} [declutterBuilderGroup] Builder for decluttering.
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*/
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function renderPointGeometry(
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builderGroup,
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geometry,
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style,
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feature,
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declutterBuilderGroup
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) {
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const imageStyle = style.getImage();
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const textStyle = style.getText();
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/** @type {import("../render/canvas.js").DeclutterImageWithText} */
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let declutterImageWithText;
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if (imageStyle) {
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if (imageStyle.getImageState() != ImageState.LOADED) {
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return;
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}
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let imageBuilderGroup = builderGroup;
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if (declutterBuilderGroup) {
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const declutterMode = imageStyle.getDeclutterMode();
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if (declutterMode !== 'none') {
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imageBuilderGroup = declutterBuilderGroup;
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if (declutterMode === 'obstacle') {
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// draw in non-declutter group:
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const imageReplay = builderGroup.getBuilder(
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style.getZIndex(),
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'Image'
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);
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imageReplay.setImageStyle(imageStyle, declutterImageWithText);
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imageReplay.drawPoint(geometry, feature);
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} else if (textStyle && textStyle.getText()) {
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declutterImageWithText = {};
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}
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}
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}
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const imageReplay = imageBuilderGroup.getBuilder(
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style.getZIndex(),
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'Image'
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);
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imageReplay.setImageStyle(imageStyle, declutterImageWithText);
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imageReplay.drawPoint(geometry, feature);
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}
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if (textStyle && textStyle.getText()) {
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let textBuilderGroup = builderGroup;
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if (declutterBuilderGroup) {
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textBuilderGroup = declutterBuilderGroup;
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}
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const textReplay = textBuilderGroup.getBuilder(style.getZIndex(), 'Text');
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textReplay.setTextStyle(textStyle, declutterImageWithText);
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textReplay.drawText(geometry, feature);
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}
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}
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/**
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* @param {import("../render/canvas/BuilderGroup.js").default} builderGroup Replay group.
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* @param {import("../geom/MultiPoint.js").default|import("../render/Feature.js").default} geometry Geometry.
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* @param {import("../style/Style.js").default} style Style.
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* @param {import("../Feature.js").FeatureLike} feature Feature.
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* @param {import("../render/canvas/BuilderGroup.js").default} [declutterBuilderGroup] Builder for decluttering.
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*/
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function renderMultiPointGeometry(
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builderGroup,
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geometry,
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style,
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feature,
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declutterBuilderGroup
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) {
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const imageStyle = style.getImage();
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const textStyle = style.getText();
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/** @type {import("../render/canvas.js").DeclutterImageWithText} */
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let declutterImageWithText;
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if (imageStyle) {
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if (imageStyle.getImageState() != ImageState.LOADED) {
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return;
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}
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let imageBuilderGroup = builderGroup;
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if (declutterBuilderGroup) {
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const declutterMode = imageStyle.getDeclutterMode();
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if (declutterMode !== 'none') {
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imageBuilderGroup = declutterBuilderGroup;
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if (declutterMode === 'obstacle') {
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// draw in non-declutter group:
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const imageReplay = builderGroup.getBuilder(
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style.getZIndex(),
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'Image'
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);
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imageReplay.setImageStyle(imageStyle, declutterImageWithText);
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imageReplay.drawMultiPoint(geometry, feature);
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} else if (textStyle && textStyle.getText()) {
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declutterImageWithText = {};
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}
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}
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}
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const imageReplay = imageBuilderGroup.getBuilder(
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style.getZIndex(),
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'Image'
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);
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imageReplay.setImageStyle(imageStyle, declutterImageWithText);
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imageReplay.drawMultiPoint(geometry, feature);
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}
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if (textStyle && textStyle.getText()) {
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let textBuilderGroup = builderGroup;
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if (declutterBuilderGroup) {
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textBuilderGroup = declutterBuilderGroup;
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}
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const textReplay = textBuilderGroup.getBuilder(style.getZIndex(), 'Text');
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textReplay.setTextStyle(textStyle, declutterImageWithText);
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textReplay.drawText(geometry, feature);
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}
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}
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/**
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* @param {import("../render/canvas/BuilderGroup.js").default} builderGroup Replay group.
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* @param {import("../geom/Polygon.js").default|import("../render/Feature.js").default} geometry Geometry.
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|
* @param {import("../style/Style.js").default} style Style.
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|
* @param {import("../Feature.js").FeatureLike} feature Feature.
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* @param {import("../render/canvas/BuilderGroup.js").default} [declutterBuilderGroup] Builder for decluttering.
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*/
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function renderPolygonGeometry(
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builderGroup,
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geometry,
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style,
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feature,
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declutterBuilderGroup
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) {
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const fillStyle = style.getFill();
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const strokeStyle = style.getStroke();
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if (fillStyle || strokeStyle) {
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const polygonReplay = builderGroup.getBuilder(style.getZIndex(), 'Polygon');
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polygonReplay.setFillStrokeStyle(fillStyle, strokeStyle);
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polygonReplay.drawPolygon(geometry, feature);
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}
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const textStyle = style.getText();
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if (textStyle && textStyle.getText()) {
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const textReplay = (declutterBuilderGroup || builderGroup).getBuilder(
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style.getZIndex(),
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'Text'
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);
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textReplay.setTextStyle(textStyle);
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textReplay.drawText(geometry, feature);
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}
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}
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