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21049200541

Committed 15 Jan 2026 10:53PM UTC coverage: 90.937% (-0.2%) from 91.1%

Build # 21049200541

Build Type

Pull #9939

github

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web-flow

Commit Message

Merge 683e9f44b into 1975e2367

Pull Request Pull Request #9939: fix(mapbox): MapboxOverlay: render deck layers in batches

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76.17

/modules/mapbox/src/deck-utils.ts

// deck.gl
// SPDX-License-Identifier: MIT
// Copyright (c) vis.gl contributors

import {Deck, MapView, _GlobeView as GlobeView, _flatten as flatten} from '@deck.gl/core';
import type {Viewport, MapViewState, Layer} from '@deck.gl/core';
import type {Parameters} from '@luma.gl/core';
import type MapboxLayer from './mapbox-layer';
import type MapboxLayerGroup from './mapbox-layer-group';
import type {Map, OverlayLayer} from './types';

import {lngLatToWorld, unitsPerMeter} from '@math.gl/web-mercator';

const MAPBOX_VIEW_ID = 'mapbox';

type UserData = {
  isExternal: boolean;
  currentViewport?: Viewport | null;
  mapboxLayers: Set<MapboxLayer<any>>;
  // mapboxVersion: {minor: number; major: number};
};

// Mercator constants
const TILE_SIZE = 512;
const DEGREES_TO_RADIANS = Math.PI / 180;

// Create an interleaved deck instance.
export function getDeckInstance({
  map,
  gl,
  deck
}: {
  map: Map & {__deck?: Deck<any> | null};
  gl: WebGL2RenderingContext;
  deck?: Deck<any>;
}): Deck<any> {
  // Only create one deck instance per context
  if (map.__deck) {
    return map.__deck;
  }

  // Only initialize certain props once per context
  const customRender = deck?.props._customRender;
  const onLoad = deck?.props.onLoad;

  const deckProps = {
    ...deck?.props,
    _customRender: () => {
      map.triggerRepaint();
      // customRender may be subscribed by DeckGL React component to update child props
      // make sure it is still called
      // Hack - do not pass a redraw reason here to prevent the React component from clearing the context
      // Rerender will be triggered by MapboxLayer's render()
      customRender?.('');
    }
  };
  deckProps.parameters = {...getDefaultParameters(map, true), ...deckProps.parameters};
  deckProps.views ||= getDefaultView(map);

  let deckInstance: Deck;

  if (!deck || deck.props.gl === gl) {
    // If deck isn't defined (Internal MapboxLayer use case),
    // or if deck is defined and is using the WebGLContext created by mapbox (MapboxOverlay and External MapboxLayer use case),
    // block deck from setting the canvas size, and use the map's viewState to drive deck.
    // Otherwise, we use deck's viewState to drive the map.
    Object.assign(deckProps, {
      gl,
      width: null,
      height: null,
      touchAction: 'unset',
      viewState: getViewState(map)
    });
    if (deck?.isInitialized) {
      watchMapMove(deck, map);
    } else {
      deckProps.onLoad = () => {
        onLoad?.();
        watchMapMove(deckInstance, map);
      };
    }
  }

  if (deck) {
    deckInstance = deck;
    deck.setProps(deckProps);
    (deck.userData as UserData).isExternal = true;
  } else {
    deckInstance = new Deck(deckProps);
    map.on('remove', () => {
      removeDeckInstance(map);
    });
  }

  (deckInstance.userData as UserData).mapboxLayers = new Set();
  // (deckInstance.userData as UserData).mapboxVersion = getMapboxVersion(map);
  map.__deck = deckInstance;
  map.on('render', () => {
    if (deckInstance.isInitialized) afterRender(deckInstance, map);
  });

  return deckInstance;
}

function watchMapMove(deck: Deck, map: Map & {__deck?: Deck | null}) {
  const _handleMapMove = () => {
    if (deck.isInitialized) {
      // call view state methods
      onMapMove(deck, map);
    } else {
      // deregister itself when deck is finalized
      map.off('move', _handleMapMove);
    }
  };
  map.on('move', _handleMapMove);
}

export function removeDeckInstance(map: Map & {__deck?: Deck | null}) {
  map.__deck?.finalize();
  map.__deck = null;
}

export function getDefaultParameters(map: Map, interleaved: boolean): Parameters {
  const result: Parameters = interleaved
    ? {
        depthWriteEnabled: true,
        depthCompare: 'less-equal',
        depthBias: 0,
        blend: true,
        blendColorSrcFactor: 'src-alpha',
        blendColorDstFactor: 'one-minus-src-alpha',
        blendAlphaSrcFactor: 'one',
        blendAlphaDstFactor: 'one-minus-src-alpha',
        blendColorOperation: 'add',
        blendAlphaOperation: 'add'
      }
    : {};
  if (getProjection(map) === 'globe') {
    result.cullMode = 'back';
  }
  return result;
}

export function addLayer(deck: Deck, layer: MapboxLayer<any>): void {
  (deck.userData as UserData).mapboxLayers.add(layer);
  updateLayers(deck);
}

export function removeLayer(deck: Deck, layer: MapboxLayer<any>): void {
  (deck.userData as UserData).mapboxLayers.delete(layer);
  updateLayers(deck);
}

export function updateLayer(deck: Deck, layer: MapboxLayer<any>): void {
  updateLayers(deck);
}

export function drawLayer(
  deck: Deck,
  map: Map,
  layer: MapboxLayer<any>,
  renderParameters: any
): void {
  let {currentViewport} = deck.userData as UserData;
  let clearStack: boolean = false;
  if (!currentViewport) {
    // This is the first layer drawn in this render cycle.
    // Generate viewport from the current map state.
    currentViewport = getViewport(deck, map, renderParameters);
    (deck.userData as UserData).currentViewport = currentViewport;
    clearStack = true;
  }

  if (!deck.isInitialized) {
    return;
  }

  deck._drawLayers('mapbox-repaint', {
    viewports: [currentViewport],
    layerFilter: params =>
      (!deck.props.layerFilter || deck.props.layerFilter(params)) &&
      (layer.id === params.layer.id || params.layer.props.operation.includes('terrain')),

    clearStack,
    clearCanvas: false
  });
}

export function drawLayerGroup(
  deck: Deck,
  map: Map,
  group: MapboxLayerGroup,
  renderParameters: any
): void {
  let {currentViewport} = deck.userData as UserData;
  let clearStack: boolean = false;
  if (!currentViewport) {
    // This is the first layer drawn in this render cycle.
    // Generate viewport from the current map state.
    currentViewport = getViewport(deck, map, renderParameters);
    (deck.userData as UserData).currentViewport = currentViewport;
    clearStack = true;
  }

  if (!deck.isInitialized) {
    return;
  }

  deck._drawLayers('mapbox-repaint', {
    viewports: [currentViewport],
    layerFilter: params => {
      if (deck.props.layerFilter && !deck.props.layerFilter(params)) {
        return false;
      }

      const layer = params.layer as OverlayLayer;
      if (group.beforeId && layer.props.beforeId === group.beforeId) {
        return true;
      }
      if (group.slot && layer.props.slot === group.slot) {
        return true;
      }
      if (layer.props.operation.includes('terrain')) {
        return true;
      }
      return false;
    },
    clearStack,
    clearCanvas: false
  });
}

export function getProjection(map: Map): 'mercator' | 'globe' {
  const projection = map.getProjection?.();
  const type =
    // maplibre projection spec
    projection?.type ||
    // mapbox projection spec
    projection?.name;
  if (type === 'globe') {
    return 'globe';
  }
  if (type && type !== 'mercator') {
    throw new Error('Unsupported projection');
  }
  return 'mercator';
}

export function getDefaultView(map: Map): GlobeView | MapView {
  if (getProjection(map) === 'globe') {
    return new GlobeView({id: MAPBOX_VIEW_ID});
  }
  return new MapView({id: MAPBOX_VIEW_ID});
}

export function getViewState(map: Map): MapViewState & {
  repeat: boolean;
  padding: {
    left: number;
    right: number;
    top: number;
    bottom: number;
  };
} {
  const {lng, lat} = map.getCenter();

  const viewState: MapViewState & {
    repeat: boolean;
    padding: {
      left: number;
      right: number;
      top: number;
      bottom: number;
    };
  } = {
    // Longitude returned by getCenter can be outside of [-180, 180] when zooming near the anti meridian
    // https://github.com/visgl/deck.gl/issues/6894
    longitude: ((lng + 540) % 360) - 180,
    latitude: lat,
    zoom: map.getZoom(),
    bearing: map.getBearing(),
    pitch: map.getPitch(),
    padding: map.getPadding(),
    repeat: map.getRenderWorldCopies()
  };

  if (map.getTerrain?.()) {
    // When the base map has terrain, we need to target the camera at the terrain surface
    centerCameraOnTerrain(map, viewState);
  }

  return viewState;
}

function centerCameraOnTerrain(map: Map, viewState: MapViewState) {
  if (map.getFreeCameraOptions) {
    // mapbox-gl v2
    const {position} = map.getFreeCameraOptions();
    if (!position || position.z === undefined) {
      return;
    }

    // @ts-ignore transform is not typed
    const height = map.transform.height;
    const {longitude, latitude, pitch} = viewState;

    // Convert mapbox mercator coordinate to deck common space
    const cameraX = position.x * TILE_SIZE;
    const cameraY = (1 - position.y) * TILE_SIZE;
    const cameraZ = position.z * TILE_SIZE;

    // Mapbox manipulates zoom in terrain mode, see discussion here: https://github.com/mapbox/mapbox-gl-js/issues/12040
    const center = lngLatToWorld([longitude, latitude]);
    const dx = cameraX - center[0];
    const dy = cameraY - center[1];
    const cameraToCenterDistanceGround = Math.sqrt(dx * dx + dy * dy);

    const pitchRadians = pitch! * DEGREES_TO_RADIANS;
    const altitudePixels = 1.5 * height;
    const scale =
      pitchRadians < 0.001
        ? // Pitch angle too small to deduce the look at point, assume elevation is 0
          (altitudePixels * Math.cos(pitchRadians)) / cameraZ
        : (altitudePixels * Math.sin(pitchRadians)) / cameraToCenterDistanceGround;
    viewState.zoom = Math.log2(scale);

    const cameraZFromSurface = (altitudePixels * Math.cos(pitchRadians)) / scale;
    const surfaceElevation = cameraZ - cameraZFromSurface;
    viewState.position = [0, 0, surfaceElevation / unitsPerMeter(latitude)];
  }
  // @ts-ignore transform is not typed
  else if (typeof map.transform.elevation === 'number') {
    // maplibre-gl
    // @ts-ignore transform is not typed
    viewState.position = [0, 0, map.transform.elevation];
  }
}

// Since maplibre-gl@5
// https://github.com/maplibre/maplibre-gl-js/blob/main/src/style/style_layer/custom_style_layer.ts
type MaplibreRenderParameters = {
  farZ: number;
  nearZ: number;
  fov: number;
  modelViewProjectionMatrix: number[];
  projectionMatrix: number[];
};

function getViewport(deck: Deck, map: Map, renderParameters?: unknown): Viewport {
  const viewState = getViewState(map);
  const {views} = deck.props;
  const view =
    (views && flatten(views).find((v: {id: string}) => v.id === MAPBOX_VIEW_ID)) ||
    getDefaultView(map);

  if (renderParameters) {
    // Called from MapboxLayer.render
    // Magic number, matches mapbox-gl@>=1.3.0's projection matrix
    view.props.nearZMultiplier = 0.2;
  }

  // Get the base map near/far plane
  // renderParameters is maplibre API but not mapbox
  // Transform is not an official API, properties could be undefined for older versions
  const nearZ = (renderParameters as MaplibreRenderParameters)?.nearZ ?? map.transform._nearZ;
  const farZ = (renderParameters as MaplibreRenderParameters)?.farZ ?? map.transform._farZ;
  if (Number.isFinite(nearZ)) {
    viewState.nearZ = nearZ / map.transform.height;
    viewState.farZ = farZ / map.transform.height;
  }
  // Otherwise fallback to default calculation using nearZMultiplier/farZMultiplier

  return view.makeViewport({
    width: deck.width,
    height: deck.height,
    viewState
  }) as Viewport;
}

function afterRender(deck: Deck, map: Map): void {
  const {mapboxLayers, isExternal} = deck.userData as UserData;

  if (isExternal) {
    // Draw non-Mapbox layers
    const mapboxLayerIds = Array.from(mapboxLayers, layer => layer.id);
    const deckLayers = flatten(deck.props.layers, Boolean) as Layer[];
    const hasNonMapboxLayers = deckLayers.some(
      layer => layer && !mapboxLayerIds.includes(layer.id)
    );
    let viewports = deck.getViewports();
    const mapboxViewportIdx = viewports.findIndex(vp => vp.id === MAPBOX_VIEW_ID);
    const hasNonMapboxViews = viewports.length > 1 || mapboxViewportIdx < 0;

    if (hasNonMapboxLayers || hasNonMapboxViews) {
      if (mapboxViewportIdx >= 0) {
        viewports = viewports.slice();
        viewports[mapboxViewportIdx] = getViewport(deck, map);
      }

      deck._drawLayers('mapbox-repaint', {
        viewports,
        layerFilter: params =>
          (!deck.props.layerFilter || deck.props.layerFilter(params)) &&
          (params.viewport.id !== MAPBOX_VIEW_ID || !mapboxLayerIds.includes(params.layer.id)),
        clearCanvas: false
      });
    }
  }

  // End of render cycle, clear generated viewport
  (deck.userData as UserData).currentViewport = null;
}

function onMapMove(deck: Deck, map: Map): void {
  deck.setProps({
    viewState: getViewState(map)
  });
  // Camera changed, will trigger a map repaint right after this
  // Clear any change flag triggered by setting viewState so that deck does not request
  // a second repaint
  deck.needsRedraw({clearRedrawFlags: true});
}

function updateLayers(deck: Deck): void {
  if ((deck.userData as UserData).isExternal) {
    return;
  }

  const layers: Layer[] = [];
  (deck.userData as UserData).mapboxLayers.forEach(deckLayer => {
    const LayerType = deckLayer.props.type;
    const layer = new LayerType(deckLayer.props);
    layers.push(layer);
  });
  deck.setProps({layers});
}

1	// deck.gl	1✔
2	// SPDX-License-Identifier: MIT	1✔
3	// Copyright (c) vis.gl contributors	1✔
4		1✔
5	import {Deck, MapView, _GlobeView as GlobeView, _flatten as flatten} from '@deck.gl/core';	1✔
6	import type {Viewport, MapViewState, Layer} from '@deck.gl/core';	1✔
7	import type {Parameters} from '@luma.gl/core';	1✔
8	import type MapboxLayer from './mapbox-layer';	1✔
9	import type MapboxLayerGroup from './mapbox-layer-group';	1✔
10	import type {Map, OverlayLayer} from './types';	1✔
11		1✔
12	import {lngLatToWorld, unitsPerMeter} from '@math.gl/web-mercator';	1✔
13		1✔
14	const MAPBOX_VIEW_ID = 'mapbox';	1✔
15		1✔
16	type UserData = {	1✔
17	isExternal: boolean;	1✔
18	currentViewport?: Viewport \| null;	1✔
19	mapboxLayers: Set<MapboxLayer<any>>;	1✔
20	// mapboxVersion: {minor: number; major: number};	1✔
21	};	1✔
22		1✔
23	// Mercator constants	1✔
24	const TILE_SIZE = 512;	1✔
25	const DEGREES_TO_RADIANS = Math.PI / 180;	1✔
26		1✔
27	// Create an interleaved deck instance.	1✔
28	export function getDeckInstance({	1✔
29	map,	28✔
30	gl,	28✔
31	deck	28✔
32	}: {	28✔
33	map: Map & {__deck?: Deck<any> \| null};	28✔
34	gl: WebGL2RenderingContext;	28✔
35	deck?: Deck<any>;	28✔
36	}): Deck<any> {	28✔
37	// Only create one deck instance per context	28✔
38	if (map.__deck) {	28✔
39	return map.__deck;	15✔
40	}	15✔
41		13✔
42	// Only initialize certain props once per context	13✔
43	const customRender = deck?.props._customRender;	28✔
44	const onLoad = deck?.props.onLoad;	28✔
45		28✔
46	const deckProps = {	28✔
47	...deck?.props,	28✔
48	_customRender: () => {	28✔
49	map.triggerRepaint();	11✔
50	// customRender may be subscribed by DeckGL React component to update child props	11✔
51	// make sure it is still called	11✔
52	// Hack - do not pass a redraw reason here to prevent the React component from clearing the context	11✔
53	// Rerender will be triggered by MapboxLayer's render()	11✔
54	customRender?.('');	11!
55	}	11✔
56	};	28✔
57	deckProps.parameters = {...getDefaultParameters(map, true), ...deckProps.parameters};	28✔
58	deckProps.views \|\|= getDefaultView(map);	28✔
59		28✔
60	let deckInstance: Deck;	28✔
61		28✔
62	if (!deck \|\| deck.props.gl === gl) {	28✔
63	// If deck isn't defined (Internal MapboxLayer use case),	9✔
64	// or if deck is defined and is using the WebGLContext created by mapbox (MapboxOverlay and External MapboxLayer use case),	9✔
65	// block deck from setting the canvas size, and use the map's viewState to drive deck.	9✔
66	// Otherwise, we use deck's viewState to drive the map.	9✔
67	Object.assign(deckProps, {	9✔
68	gl,	9✔
69	width: null,	9✔
70	height: null,	9✔
71	touchAction: 'unset',	9✔
72	viewState: getViewState(map)	9✔
73	});	9✔
74	if (deck?.isInitialized) {	9!
75	watchMapMove(deck, map);	×
76	} else {	9✔
77	deckProps.onLoad = () => {	9✔
78	onLoad?.();	6✔
79	watchMapMove(deckInstance, map);	6✔
80	};	6✔
81	}	9✔
82	}	9✔
83		13✔
84	if (deck) {	28✔
85	deckInstance = deck;	12✔
86	deck.setProps(deckProps);	12✔
87	(deck.userData as UserData).isExternal = true;	12✔
88	} else {	28✔
89	deckInstance = new Deck(deckProps);	1✔
90	map.on('remove', () => {	1✔
91	removeDeckInstance(map);	1✔
92	});	1✔
93	}	1✔
94		13✔
95	(deckInstance.userData as UserData).mapboxLayers = new Set();	13✔
96	// (deckInstance.userData as UserData).mapboxVersion = getMapboxVersion(map);	13✔
97	map.__deck = deckInstance;	13✔
98	map.on('render', () => {	13✔
99	if (deckInstance.isInitialized) afterRender(deckInstance, map);	15✔
100	});	13✔
101		13✔
102	return deckInstance;	13✔
103	}	13✔
104		1✔
105	function watchMapMove(deck: Deck, map: Map & {__deck?: Deck \| null}) {	6✔
106	const _handleMapMove = () => {	6✔
107	if (deck.isInitialized) {	1!
108	// call view state methods	×
109	onMapMove(deck, map);	×
110	} else {	1✔
111	// deregister itself when deck is finalized	1✔
112	map.off('move', _handleMapMove);	1✔
113	}	1✔
114	};	1✔
115	map.on('move', _handleMapMove);	6✔
116	}	6✔
117		1✔
118	export function removeDeckInstance(map: Map & {__deck?: Deck \| null}) {	1✔
119	map.__deck?.finalize();	9✔
120	map.__deck = null;	9✔
121	}	9✔
122		1✔
123	export function getDefaultParameters(map: Map, interleaved: boolean): Parameters {	1✔
124	const result: Parameters = interleaved	27✔
125	? {	23✔
126	depthWriteEnabled: true,	23✔
127	depthCompare: 'less-equal',	23✔
128	depthBias: 0,	23✔
129	blend: true,	23✔
130	blendColorSrcFactor: 'src-alpha',	23✔
131	blendColorDstFactor: 'one-minus-src-alpha',	23✔
132	blendAlphaSrcFactor: 'one',	23✔
133	blendAlphaDstFactor: 'one-minus-src-alpha',	23✔
134	blendColorOperation: 'add',	23✔
135	blendAlphaOperation: 'add'	23✔
136	}	23✔
137	: {};	4✔
138	if (getProjection(map) === 'globe') {	27✔
139	result.cullMode = 'back';	2✔
140	}	2✔
141	return result;	27✔
142	}	27✔
143		1✔
144	export function addLayer(deck: Deck, layer: MapboxLayer<any>): void {	1✔
145	(deck.userData as UserData).mapboxLayers.add(layer);	20✔
146	updateLayers(deck);	20✔
147	}	20✔
148		1✔
149	export function removeLayer(deck: Deck, layer: MapboxLayer<any>): void {	1✔
150	(deck.userData as UserData).mapboxLayers.delete(layer);	13✔
151	updateLayers(deck);	13✔
152	}	13✔
153		1✔
154	export function updateLayer(deck: Deck, layer: MapboxLayer<any>): void {	1✔
155	updateLayers(deck);	13✔
156	}	13✔
157		1✔
158	export function drawLayer(	1✔
159	deck: Deck,	11✔
160	map: Map,	11✔
161	layer: MapboxLayer<any>,	11✔
162	renderParameters: any	11✔
163	): void {	11✔
164	let {currentViewport} = deck.userData as UserData;	11✔
165	let clearStack: boolean = false;	11✔
166	if (!currentViewport) {	11✔
167	// This is the first layer drawn in this render cycle.	10✔
168	// Generate viewport from the current map state.	10✔
169	currentViewport = getViewport(deck, map, renderParameters);	10✔
170	(deck.userData as UserData).currentViewport = currentViewport;	10✔
171	clearStack = true;	10✔
172	}	10✔
173		11✔
174	if (!deck.isInitialized) {	11✔
175	return;	1✔
176	}	1✔
177		10✔
178	deck._drawLayers('mapbox-repaint', {	10✔
179	viewports: [currentViewport],	10✔
180	layerFilter: params =>	10✔
181	(!deck.props.layerFilter \|\| deck.props.layerFilter(params)) &&	13✔
182	(layer.id === params.layer.id \|\| params.layer.props.operation.includes('terrain')),	10✔
183		10✔
184	clearStack,	10✔
185	clearCanvas: false	10✔
186	});	10✔
187	}	10✔
188		1✔
189	export function drawLayerGroup(	1✔
NEW 190	deck: Deck,	×
NEW 191	map: Map,	×
NEW 192	group: MapboxLayerGroup,	×
NEW 193	renderParameters: any	×
NEW 194	): void {	×
NEW 195	let {currentViewport} = deck.userData as UserData;	×
NEW 196	let clearStack: boolean = false;	×
NEW 197	if (!currentViewport) {	×
NEW 198	// This is the first layer drawn in this render cycle.	×
NEW 199	// Generate viewport from the current map state.	×
NEW 200	currentViewport = getViewport(deck, map, renderParameters);	×
NEW 201	(deck.userData as UserData).currentViewport = currentViewport;	×
NEW 202	clearStack = true;	×
NEW 203	}	×
NEW 204		×
NEW 205	if (!deck.isInitialized) {	×
NEW 206	return;	×
NEW 207	}	×
NEW 208		×
NEW 209	deck._drawLayers('mapbox-repaint', {	×
NEW 210	viewports: [currentViewport],	×
NEW 211	layerFilter: params => {	×
NEW 212	if (deck.props.layerFilter && !deck.props.layerFilter(params)) {	×
NEW 213	return false;	×
NEW 214	}	×
NEW 215		×
NEW 216	const layer = params.layer as OverlayLayer;	×
NEW 217	if (group.beforeId && layer.props.beforeId === group.beforeId) {	×
NEW 218	return true;	×
NEW 219	}	×
NEW 220	if (group.slot && layer.props.slot === group.slot) {	×
NEW 221	return true;	×
NEW 222	}	×
NEW 223	if (layer.props.operation.includes('terrain')) {	×
NEW 224	return true;	×
NEW 225	}	×
NEW 226	return false;	×
NEW 227	},	×
UNCOV 228	clearStack,	×
UNCOV 229	clearCanvas: false	×
UNCOV 230	});	×
UNCOV 231	}	×
232		1✔
233	export function getProjection(map: Map): 'mercator' \| 'globe' {	1✔
234	const projection = map.getProjection?.();	55✔
235	const type =	55✔
236	// maplibre projection spec	55✔
237	projection?.type \|\|	55!
238	// mapbox projection spec	×
239	projection?.name;	×
240	if (type === 'globe') {	55✔
241	return 'globe';	5✔
242	}	5✔
243	if (type && type !== 'mercator') {	55!
244	throw new Error('Unsupported projection');	×
245	}	✔
246	return 'mercator';	50✔
247	}	50✔
248		1✔
249	export function getDefaultView(map: Map): GlobeView \| MapView {	1✔
250	if (getProjection(map) === 'globe') {	22✔
251	return new GlobeView({id: MAPBOX_VIEW_ID});	2✔
252	}	2✔
253	return new MapView({id: MAPBOX_VIEW_ID});	20✔
254	}	20✔
255		1✔
256	export function getViewState(map: Map): MapViewState & {	1✔
257	repeat: boolean;	24✔
258	padding: {	24✔
259	left: number;	24✔
260	right: number;	24✔
261	top: number;	24✔
262	bottom: number;	24✔
263	};	24✔
264	} {	24✔
265	const {lng, lat} = map.getCenter();	24✔
266		24✔
267	const viewState: MapViewState & {	24✔
268	repeat: boolean;	24✔
269	padding: {	24✔
270	left: number;	24✔
271	right: number;	24✔
272	top: number;	24✔
273	bottom: number;	24✔
274	};	24✔
275	} = {	24✔
276	// Longitude returned by getCenter can be outside of [-180, 180] when zooming near the anti meridian	24✔
277	// https://github.com/visgl/deck.gl/issues/6894	24✔
278	longitude: ((lng + 540) % 360) - 180,	24✔
279	latitude: lat,	24✔
280	zoom: map.getZoom(),	24✔
281	bearing: map.getBearing(),	24✔
282	pitch: map.getPitch(),	24✔
283	padding: map.getPadding(),	24✔
284	repeat: map.getRenderWorldCopies()	24✔
285	};	24✔
286		24✔
287	if (map.getTerrain?.()) {	24!
288	// When the base map has terrain, we need to target the camera at the terrain surface	×
289	centerCameraOnTerrain(map, viewState);	×
290	}	×
291		24✔
292	return viewState;	24✔
293	}	24✔
294		1✔
295	function centerCameraOnTerrain(map: Map, viewState: MapViewState) {	×
296	if (map.getFreeCameraOptions) {	×
297	// mapbox-gl v2	×
298	const {position} = map.getFreeCameraOptions();	×
299	if (!position \|\| position.z === undefined) {	×
300	return;	×
301	}	×
302		×
303	// @ts-ignore transform is not typed	×
304	const height = map.transform.height;	×
305	const {longitude, latitude, pitch} = viewState;	×
306		×
307	// Convert mapbox mercator coordinate to deck common space	×
308	const cameraX = position.x * TILE_SIZE;	×
309	const cameraY = (1 - position.y) * TILE_SIZE;	×
310	const cameraZ = position.z * TILE_SIZE;	×
311		×
312	// Mapbox manipulates zoom in terrain mode, see discussion here: https://github.com/mapbox/mapbox-gl-js/issues/12040	×
313	const center = lngLatToWorld([longitude, latitude]);	×
314	const dx = cameraX - center[0];	×
315	const dy = cameraY - center[1];	×
316	const cameraToCenterDistanceGround = Math.sqrt(dx * dx + dy * dy);	×
317		×
318	const pitchRadians = pitch! * DEGREES_TO_RADIANS;	×
319	const altitudePixels = 1.5 * height;	×
320	const scale =	×
321	pitchRadians < 0.001	×
322	? // Pitch angle too small to deduce the look at point, assume elevation is 0	×
323	(altitudePixels * Math.cos(pitchRadians)) / cameraZ	×
324	: (altitudePixels * Math.sin(pitchRadians)) / cameraToCenterDistanceGround;	×
325	viewState.zoom = Math.log2(scale);	×
326		×
327	const cameraZFromSurface = (altitudePixels * Math.cos(pitchRadians)) / scale;	×
328	const surfaceElevation = cameraZ - cameraZFromSurface;	×
329	viewState.position = [0, 0, surfaceElevation / unitsPerMeter(latitude)];	×
330	}	×
331	// @ts-ignore transform is not typed	×
332	else if (typeof map.transform.elevation === 'number') {	×
333	// maplibre-gl	×
334	// @ts-ignore transform is not typed	×
335	viewState.position = [0, 0, map.transform.elevation];	×
336	}	×
337	}	×
338		1✔
339	// Since maplibre-gl@5	1✔
340	// https://github.com/maplibre/maplibre-gl-js/blob/main/src/style/style_layer/custom_style_layer.ts	1✔
341	type MaplibreRenderParameters = {	1✔
342	farZ: number;	1✔
343	nearZ: number;	1✔
344	fov: number;	1✔
345	modelViewProjectionMatrix: number[];	1✔
346	projectionMatrix: number[];	1✔
347	};	1✔
348		1✔
349	function getViewport(deck: Deck, map: Map, renderParameters?: unknown): Viewport {	11✔
350	const viewState = getViewState(map);	11✔
351	const {views} = deck.props;	11✔
352	const view =	11✔
353	(views && flatten(views).find((v: {id: string}) => v.id === MAPBOX_VIEW_ID)) \|\|	11✔
354	getDefaultView(map);	1✔
355		11✔
356	if (renderParameters) {	11!
357	// Called from MapboxLayer.render	×
358	// Magic number, matches mapbox-gl@>=1.3.0's projection matrix	×
359	view.props.nearZMultiplier = 0.2;	×
360	}	×
361		11✔
362	// Get the base map near/far plane	11✔
363	// renderParameters is maplibre API but not mapbox	11✔
364	// Transform is not an official API, properties could be undefined for older versions	11✔
365	const nearZ = (renderParameters as MaplibreRenderParameters)?.nearZ ?? map.transform._nearZ;	11!
366	const farZ = (renderParameters as MaplibreRenderParameters)?.farZ ?? map.transform._farZ;	11!
367	if (Number.isFinite(nearZ)) {	11!
368	viewState.nearZ = nearZ / map.transform.height;	×
369	viewState.farZ = farZ / map.transform.height;	×
370	}	×
371	// Otherwise fallback to default calculation using nearZMultiplier/farZMultiplier	11✔
372		11✔
373	return view.makeViewport({	11✔
374	width: deck.width,	11✔
375	height: deck.height,	11✔
376	viewState	11✔
377	}) as Viewport;	11✔
378	}	11✔
379		1✔
380	function afterRender(deck: Deck, map: Map): void {	13✔
381	const {mapboxLayers, isExternal} = deck.userData as UserData;	13✔
382		13✔
383	if (isExternal) {	13✔
384	// Draw non-Mapbox layers	12✔
385	const mapboxLayerIds = Array.from(mapboxLayers, layer => layer.id);	12✔
386	const deckLayers = flatten(deck.props.layers, Boolean) as Layer[];	12✔
387	const hasNonMapboxLayers = deckLayers.some(	12✔
388	layer => layer && !mapboxLayerIds.includes(layer.id)	12✔
389	);	12✔
390	let viewports = deck.getViewports();	12✔
391	const mapboxViewportIdx = viewports.findIndex(vp => vp.id === MAPBOX_VIEW_ID);	12✔
392	const hasNonMapboxViews = viewports.length > 1 \|\| mapboxViewportIdx < 0;	12✔
393		12✔
394	if (hasNonMapboxLayers \|\| hasNonMapboxViews) {	12✔
395	if (mapboxViewportIdx >= 0) {	2✔
396	viewports = viewports.slice();	1✔
397	viewports[mapboxViewportIdx] = getViewport(deck, map);	1✔
398	}	1✔
399		2✔
400	deck._drawLayers('mapbox-repaint', {	2✔
401	viewports,	2✔
402	layerFilter: params =>	2✔
403	(!deck.props.layerFilter \|\| deck.props.layerFilter(params)) &&	5✔
404	(params.viewport.id !== MAPBOX_VIEW_ID \|\| !mapboxLayerIds.includes(params.layer.id)),	3✔
405	clearCanvas: false	2✔
406	});	2✔
407	}	2✔
408	}	12✔
409		13✔
410	// End of render cycle, clear generated viewport	13✔
411	(deck.userData as UserData).currentViewport = null;	13✔
412	}	13✔
413		1✔
414	function onMapMove(deck: Deck, map: Map): void {	×
415	deck.setProps({	×
416	viewState: getViewState(map)	×
417	});	×
418	// Camera changed, will trigger a map repaint right after this	×
419	// Clear any change flag triggered by setting viewState so that deck does not request	×
420	// a second repaint	×
421	deck.needsRedraw({clearRedrawFlags: true});	×
422	}	×
423		1✔
424	function updateLayers(deck: Deck): void {	46✔
425	if ((deck.userData as UserData).isExternal) {	46✔
426	return;	42✔
427	}	42✔
428		4✔
429	const layers: Layer[] = [];	4✔
430	(deck.userData as UserData).mapboxLayers.forEach(deckLayer => {	4✔
431	const LayerType = deckLayer.props.type;	3✔
432	const layer = new LayerType(deckLayer.props);	3✔
433	layers.push(layer);	3✔
434	});	4✔
435	deck.setProps({layers});	4✔
436	}	4✔

visgl / deck.gl / 21049200541

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