21239617648

Committed 22 Jan 2026 07:18AM UTC coverage: 91.108% (-0.007%) from 91.115%

Build # 21239617648

Build Type

Pull #9955

github

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web-flow

Commit Message

Merge a4ab3d8cc into 83ac41278

Pull Request Pull Request #9955: chore(mapbox): Remove internal deck mode from MapboxLayer

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/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 {LayerOverlayProps, Map} from './types';

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

const MAPBOX_VIEW_ID = 'mapbox';

type UserData = {
  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);

  if (deck.props.gl === gl) {
    // deck is using the WebGLContext created by mapbox,
    // 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(deck, map);
      };
    }
  }

  deck.setProps(deckProps);

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

  return deck;
}

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);
}

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

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 Layer<LayerOverlayProps>;
      if (layer.props.beforeId === group.beforeId && layer.props.slot === group.slot) {
        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} = deck.userData as UserData;

  // 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});
}

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

visgl / deck.gl / 21239617648

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