22984455925

Committed 12 Mar 2026 02:54AM UTC coverage: 91.012% (+0.001%) from 91.011%

Build # 22984455925

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github

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web-flow

Commit Message

fix(mapbox): handle null viewport (#10086)

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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;
};

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

// Create an interleaved deck instance.
export function getDeckInstance({
  map,
  deck
}: {
  map: Map & {__deck?: Deck<any> | null};
  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.views ||= getDefaultView(map);

  // deck is using the WebGLContext created by mapbox,
  // block deck from setting the canvas size, and use the map's viewState to drive deck.
  Object.assign(deckProps, {
    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);

  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 drawLayer(
  deck: Deck,
  map: Map,
  layer: MapboxLayer<any>,
  renderParameters: any
): void {
  if (!deck.isInitialized) {
    return;
  }

  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 (!currentViewport) {
    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 {
  if (!deck.isInitialized) {
    return;
  }

  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 (!currentViewport) {
    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 | null {
  const viewState = getViewState(map);
  // View is always MapView or GlobeView in this context
  const view = (deck.getView(MAPBOX_VIEW_ID) || getDefaultView(map)) as MapView | GlobeView;

  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
  });
}

function afterRender(deck: Deck, map: Map): void {
  // Draw non-Mapbox layers (layers that don't have a corresponding MapboxLayer on the map)
  const deckLayers = flatten(deck.props.layers, Boolean) as Layer[];
  const hasNonMapboxLayers = deckLayers.some(layer => layer && !map.getLayer(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();
      const mapboxViewport = getViewport(deck, map);
      if (mapboxViewport) {
        viewports[mapboxViewportIdx] = mapboxViewport;
      } else {
        viewports.splice(mapboxViewportIdx, 1);
      }
    }

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

visgl / deck.gl / 22984455925

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