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147x 1x 147x 147x 147x 147x 1x 4631x 4631x 483x 4631x 988x 986x 1x 4590x 4588x 4588x 4370x 4588x 1993x 2595x 2595x 2595x 2595x 2595x 2595x 1179x 1179x 1179x 4x 4x 1179x 1179x 2595x 378x 1x 2636x 2636x 2636x 2636x 2636x 2636x 1673x 1673x 106x 106x 1567x 10x 10x 10x 10x 10x 10x 10x 10x 1557x 1557x 1557x 1557x 2636x 2636x 2636x 93x 93x 93x 93x 93x 93x 93x 93x 93x 93x 91x 2x 93x 93x 93x 93x 93x 93x 93x 93x 1x 91x 1x 2x 1x 766x 766x 766x 766x 766x 766x 766x 766x 766x 766x 766x 93x 93x 91x 91x 2x 2x 93x 93x 93x 4x 4x 4x 2x 93x 1x 27x 27x 27x 12x 15x 988x 988x 485x 485x 485x 393x 988x 37x 988x 451x 451x 451x 4370x 4370x 4370x 147x 147x 50x 4370x 150x 4370x 1132x 4370x 964x 4370x 762x 762x 4370x 733x 733x 8x 725x 725x 1x 1x 1x 150x 150x 3x 3x 147x 147x 147x 147x 147x 35x 112x 112x 78x 34x 34x 34x 34x 34x 919x 919x 919x 919x 2x 2x 2x 2x 2x 2x 1132x 1132x 1132x 1132x 921x 921x 919x 2x 211x 211x 1132x 1x 964x 964x 964x 964x 964x 964x 964x 964x 964x 964x 964x 964x 137x 827x 827x 827x 827x 1x 582x 582x 582x 582x 582x 582x 76x 76x 76x 76x 76x 76x 506x 582x 1x 494x 141x 141x 141x 141x 37x 37x 6x 762x 762x 762x 8x 8x 6x 6x 6x 6x 1x 6x 8x 8x 8x 8x 8x 8x 5x 4x 1x 3x 3x 3x 7x 7x 7x 1x 755x 755x 1565x 755x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import BoundingSphere from "../Core/BoundingSphere.js";
import Cartesian3 from "../Core/Cartesian3.js";
import Cartesian4 from "../Core/Cartesian4.js";
import defined from "../Core/defined.js";
import IndexDatatype from "../Core/IndexDatatype.js";
import PixelFormat from "../Core/PixelFormat.js";
import Request from "../Core/Request.js";
import RequestState from "../Core/RequestState.js";
import RequestType from "../Core/RequestType.js";
import TerrainEncoding from "../Core/TerrainEncoding.js";
import TileProviderError from "../Core/TileProviderError.js";
import Buffer from "../Renderer/Buffer.js";
import BufferUsage from "../Renderer/BufferUsage.js";
import PixelDatatype from "../Renderer/PixelDatatype.js";
import Sampler from "../Renderer/Sampler.js";
import Texture from "../Renderer/Texture.js";
import TextureMagnificationFilter from "../Renderer/TextureMagnificationFilter.js";
import TextureMinificationFilter from "../Renderer/TextureMinificationFilter.js";
import TextureWrap from "../Renderer/TextureWrap.js";
import VertexArray from "../Renderer/VertexArray.js";
import ImageryState from "./ImageryState.js";
import QuadtreeTileLoadState from "./QuadtreeTileLoadState.js";
import TerrainState from "./TerrainState.js";
/**
* Contains additional information about a {@link QuadtreeTile} of the globe's surface, and
* encapsulates state transition logic for loading tiles.
*
* @constructor
* @alias GlobeSurfaceTile
* @private
*/
function GlobeSurfaceTile() {
/**
* The {@link TileImagery} attached to this tile.
* @type {TileImagery[]}
* @default []
*/
this.imagery = [];
this.waterMaskTexture = undefined;
this.waterMaskTranslationAndScale = new Cartesian4(0.0, 0.0, 1.0, 1.0);
this.terrainData = undefined;
this.vertexArray = undefined;
/**
* A bounding region used to estimate distance to the tile. The horizontal bounds are always tight-fitting,
* but the `minimumHeight` and `maximumHeight` properties may be derived from the min/max of an ancestor tile
* and be quite loose-fitting and thus very poor for estimating distance.
* @type {TileBoundingRegion}
*/
this.tileBoundingRegion = undefined;
this.occludeePointInScaledSpace = new Cartesian3();
this.boundingVolumeSourceTile = undefined;
this.boundingVolumeIsFromMesh = false;
this.terrainState = TerrainState.UNLOADED;
this.mesh = undefined;
this.fill = undefined;
this.pickBoundingSphere = new BoundingSphere();
this.surfaceShader = undefined;
this.isClipped = true;
this.clippedByBoundaries = false;
}
Object.defineProperties(GlobeSurfaceTile.prototype, {
/**
* Gets a value indicating whether or not this tile is eligible to be unloaded.
* Typically, a tile is ineligible to be unloaded while an asynchronous operation,
* such as a request for data, is in progress on it. A tile will never be
* unloaded while it is needed for rendering, regardless of the value of this
* property.
* @memberof GlobeSurfaceTile.prototype
* @type {boolean}
*/
eligibleForUnloading: {
get: function () {
// Do not remove tiles that are transitioning or that have
// imagery that is transitioning.
const terrainState = this.terrainState;
const loadingIsTransitioning =
terrainState === TerrainState.RECEIVING ||
terrainState === TerrainState.TRANSFORMING;
let shouldRemoveTile = !loadingIsTransitioning;
const imagery = this.imagery;
for (let i = 0, len = imagery.length; shouldRemoveTile && i < len; ++i) {
const tileImagery = imagery[i];
shouldRemoveTile =
!defined(tileImagery.loadingImagery) ||
tileImagery.loadingImagery.state !== ImageryState.TRANSITIONING;
}
return shouldRemoveTile;
},
},
/**
* Gets the {@link TerrainMesh} that is used for rendering this tile, if any.
* Returns the value of the {@link GlobeSurfaceTile#mesh} property if
* {@link GlobeSurfaceTile#vertexArray} is defined. Otherwise, It returns the
* {@link TerrainFillMesh#mesh} property of the {@link GlobeSurfaceTile#fill}.
* If there is no fill, it returns undefined.
*
* @memberof GlobeSurfaceTile.prototype
* @type {TerrainMesh}
*/
renderedMesh: {
get: function () {
if (defined(this.vertexArray)) {
return this.mesh;
} else if (defined(this.fill)) {
return this.fill.mesh;
}
return undefined;
},
},
});
GlobeSurfaceTile.prototype.pick = function (
ray,
mode,
projection,
cullBackFaces,
result,
) {
Iif (!defined(this.renderedMesh)) {
return undefined;
}
const value = this.renderedMesh.pick(ray, cullBackFaces, mode, projection);
return Cartesian3.clone(value, result);
};
GlobeSurfaceTile.prototype.freeResources = function () {
if (defined(this.waterMaskTexture)) {
--this.waterMaskTexture.referenceCount;
if (this.waterMaskTexture.referenceCount === 0) {
this.waterMaskTexture.destroy();
}
this.waterMaskTexture = undefined;
}
this.terrainData = undefined;
this.terrainState = TerrainState.UNLOADED;
this.mesh = undefined;
this.fill = this.fill && this.fill.destroy();
const imageryList = this.imagery;
for (let i = 0, len = imageryList.length; i < len; ++i) {
imageryList[i].freeResources();
}
this.imagery.length = 0;
this.freeVertexArray();
};
GlobeSurfaceTile.prototype.freeVertexArray = function () {
GlobeSurfaceTile._freeVertexArray(this.vertexArray);
this.vertexArray = undefined;
GlobeSurfaceTile._freeVertexArray(this.wireframeVertexArray);
this.wireframeVertexArray = undefined;
};
GlobeSurfaceTile.initialize = function (
tile,
terrainProvider,
imageryLayerCollection,
) {
let surfaceTile = tile.data;
if (!defined(surfaceTile)) {
surfaceTile = tile.data = new GlobeSurfaceTile();
}
if (tile.state === QuadtreeTileLoadState.START) {
prepareNewTile(tile, terrainProvider, imageryLayerCollection);
tile.state = QuadtreeTileLoadState.LOADING;
}
};
GlobeSurfaceTile.processStateMachine = function (
tile,
frameState,
terrainProvider,
imageryLayerCollection,
quadtree,
vertexArraysToDestroy,
terrainOnly,
) {
GlobeSurfaceTile.initialize(tile, terrainProvider, imageryLayerCollection);
const surfaceTile = tile.data;
if (tile.state === QuadtreeTileLoadState.LOADING) {
processTerrainStateMachine(
tile,
frameState,
terrainProvider,
imageryLayerCollection,
quadtree,
vertexArraysToDestroy,
);
}
// From here down we're loading imagery, not terrain. We don't want to load imagery until
// we're certain that the terrain tiles are actually visible, though. We'll load terrainOnly
// in these scenarios:
// * our bounding volume isn't accurate so we're not certain this tile is really visible (see GlobeSurfaceTileProvider#loadTile).
// * we want to upsample from this tile but don't plan to render it (see processTerrainStateMachine).
if (terrainOnly) {
return;
}
const wasAlreadyRenderable = tile.renderable;
// The terrain is renderable as soon as we have a valid vertex array.
tile.renderable = defined(surfaceTile.vertexArray);
// But it's not done loading until it's in the READY state.
const isTerrainDoneLoading = surfaceTile.terrainState === TerrainState.READY;
// If this tile's terrain and imagery are just upsampled from its parent, mark the tile as
// upsampled only. We won't refine a tile if its four children are upsampled only.
tile.upsampledFromParent =
defined(surfaceTile.terrainData) &&
surfaceTile.terrainData.wasCreatedByUpsampling();
const isImageryDoneLoading = surfaceTile.processImagery(
tile,
terrainProvider,
frameState,
);
if (isTerrainDoneLoading && isImageryDoneLoading) {
const callbacks = tile._loadedCallbacks;
const newCallbacks = {};
for (const layerId in callbacks) {
Eif (callbacks.hasOwnProperty(layerId)) {
Iif (!callbacks[layerId](tile)) {
newCallbacks[layerId] = callbacks[layerId];
}
}
}
tile._loadedCallbacks = newCallbacks;
tile.state = QuadtreeTileLoadState.DONE;
}
// Once a tile is renderable, it stays renderable, because doing otherwise would
// cause detail (or maybe even the entire globe) to vanish when adding a new
// imagery layer. `GlobeSurfaceTileProvider._onLayerAdded` sets renderable to
// false for all affected tiles that are not currently being rendered.
if (wasAlreadyRenderable) {
tile.renderable = true;
}
};
GlobeSurfaceTile.prototype.processImagery = function (
tile,
terrainProvider,
frameState,
skipLoading,
) {
const surfaceTile = tile.data;
let isUpsampledOnly = tile.upsampledFromParent;
let isAnyTileLoaded = false;
let isDoneLoading = true;
// Transition imagery states
const tileImageryCollection = surfaceTile.imagery;
let i, len;
for (i = 0, len = tileImageryCollection.length; i < len; ++i) {
const tileImagery = tileImageryCollection[i];
if (!defined(tileImagery.loadingImagery)) {
isUpsampledOnly = false;
continue;
}
if (tileImagery.loadingImagery.state === ImageryState.PLACEHOLDER) {
const imageryLayer = tileImagery.loadingImagery.imageryLayer;
if (imageryLayer.ready) {
// Remove the placeholder and add the actual skeletons (if any)
// at the same position. Then continue the loop at the same index.
tileImagery.freeResources();
tileImageryCollection.splice(i, 1);
imageryLayer._createTileImagerySkeletons(tile, terrainProvider, i);
--i;
len = tileImageryCollection.length;
continue;
} else E{
isUpsampledOnly = false;
}
}
const thisTileDoneLoading = tileImagery.processStateMachine(
tile,
frameState,
skipLoading,
);
isDoneLoading = isDoneLoading && thisTileDoneLoading;
// The imagery is renderable as soon as we have any renderable imagery for this region.
isAnyTileLoaded =
isAnyTileLoaded ||
thisTileDoneLoading ||
defined(tileImagery.readyImagery);
isUpsampledOnly =
isUpsampledOnly &&
defined(tileImagery.loadingImagery) &&
(tileImagery.loadingImagery.state === ImageryState.FAILED ||
tileImagery.loadingImagery.state === ImageryState.INVALID);
}
tile.upsampledFromParent = isUpsampledOnly;
// Allow rendering if any available layers are loaded
tile.renderable = tile.renderable && (isAnyTileLoaded || isDoneLoading);
return isDoneLoading;
};
function toggleGeodeticSurfaceNormals(
surfaceTile,
enabled,
ellipsoid,
frameState,
) {
const renderedMesh = surfaceTile.renderedMesh;
const vertexBuffer = renderedMesh.vertices;
const encoding = renderedMesh.encoding;
const vertexCount = vertexBuffer.length / encoding.stride;
// Calculate the new stride and generate a new buffer
// Clone the other encoding, toggle geodetic surface normals, then clone again to get updated stride
let newEncoding = TerrainEncoding.clone(encoding);
newEncoding.hasGeodeticSurfaceNormals = enabled;
newEncoding = TerrainEncoding.clone(newEncoding);
const newStride = newEncoding.stride;
const newVertexBuffer = new Float32Array(vertexCount * newStride);
if (enabled) {
encoding.addGeodeticSurfaceNormals(
vertexBuffer,
newVertexBuffer,
ellipsoid,
);
} else {
encoding.removeGeodeticSurfaceNormals(vertexBuffer, newVertexBuffer);
}
renderedMesh.vertices = newVertexBuffer;
renderedMesh.stride = newStride;
// delete the old vertex array (which deletes the vertex buffer attached to it), and create a new vertex array with the new vertex buffer
const isFill = renderedMesh !== surfaceTile.mesh;
Iif (isFill) {
GlobeSurfaceTile._freeVertexArray(surfaceTile.fill.vertexArray);
surfaceTile.fill.vertexArray = GlobeSurfaceTile._createVertexArrayForMesh(
frameState.context,
renderedMesh,
);
} else {
GlobeSurfaceTile._freeVertexArray(surfaceTile.vertexArray);
surfaceTile.vertexArray = GlobeSurfaceTile._createVertexArrayForMesh(
frameState.context,
renderedMesh,
);
}
GlobeSurfaceTile._freeVertexArray(surfaceTile.wireframeVertexArray);
surfaceTile.wireframeVertexArray = undefined;
}
GlobeSurfaceTile.prototype.addGeodeticSurfaceNormals = function (
ellipsoid,
frameState,
) {
toggleGeodeticSurfaceNormals(this, true, ellipsoid, frameState);
};
GlobeSurfaceTile.prototype.removeGeodeticSurfaceNormals = function (
frameState,
) {
toggleGeodeticSurfaceNormals(this, false, undefined, frameState);
};
GlobeSurfaceTile.prototype.updateExaggeration = function (
tile,
frameState,
quadtree,
) {
const surfaceTile = this;
const mesh = surfaceTile.renderedMesh;
Iif (mesh === undefined) {
return;
}
// Check the tile's terrain encoding to see if it has been exaggerated yet
const exaggeration = frameState.verticalExaggeration;
const exaggerationRelativeHeight =
frameState.verticalExaggerationRelativeHeight;
const hasExaggerationScale = exaggeration !== 1.0;
const encoding = mesh.encoding;
const encodingExaggerationScaleChanged =
encoding.exaggeration !== exaggeration;
const encodingRelativeHeightChanged =
encoding.exaggerationRelativeHeight !== exaggerationRelativeHeight;
const exaggerationChanged =
encodingExaggerationScaleChanged || encodingRelativeHeightChanged;
if (exaggerationChanged) {
// Turning exaggeration scale on/off requires adding or removing geodetic surface normals
// Relative height only translates, so it has no effect on normals
Eif (encodingExaggerationScaleChanged) {
if (hasExaggerationScale && !encoding.hasGeodeticSurfaceNormals) {
const ellipsoid = tile.tilingScheme.ellipsoid;
surfaceTile.addGeodeticSurfaceNormals(ellipsoid, frameState);
} else Eif (!hasExaggerationScale && encoding.hasGeodeticSurfaceNormals) {
surfaceTile.removeGeodeticSurfaceNormals(frameState);
}
}
encoding.exaggeration = exaggeration;
encoding.exaggerationRelativeHeight = exaggerationRelativeHeight;
// Notify the quadtree that this tile's height has changed
if (quadtree !== undefined) {
quadtree._tileToUpdateHeights.push(tile);
const customData = tile.customData;
for (const data of customData) {
// Restart the level so that a height update is triggered
data.level = -1;
}
}
mesh.updateExaggeration(exaggeration, exaggerationRelativeHeight);
}
};
GlobeSurfaceTile.prototype.updateSceneMode = function (mode) {
const surfaceTile = this;
const mesh = surfaceTile.renderedMesh;
if (mesh === undefined) {
return;
}
mesh.updateSceneMode(mode);
};
function prepareNewTile(tile, terrainProvider, imageryLayerCollection) {
let available = terrainProvider.getTileDataAvailable(
tile.x,
tile.y,
tile.level,
);
if (!defined(available) && defined(tile.parent)) {
// Provider doesn't know if this tile is available. Does the parent tile know?
const parent = tile.parent;
const parentSurfaceTile = parent.data;
if (defined(parentSurfaceTile) && defined(parentSurfaceTile.terrainData)) {
available = parentSurfaceTile.terrainData.isChildAvailable(
parent.x,
parent.y,
tile.x,
tile.y,
);
}
}
if (available === false) {
// This tile is not available, so mark it failed so we start upsampling right away.
tile.data.terrainState = TerrainState.FAILED;
}
// Map imagery tiles to this terrain tile
for (let i = 0, len = imageryLayerCollection.length; i < len; ++i) {
const layer = imageryLayerCollection.get(i);
Eif (layer.show) {
layer._createTileImagerySkeletons(tile, terrainProvider);
}
}
}
function processTerrainStateMachine(
tile,
frameState,
terrainProvider,
imageryLayerCollection,
quadtree,
vertexArraysToDestroy,
) {
const surfaceTile = tile.data;
// If this tile is FAILED, we'll need to upsample from the parent. If the parent isn't
// ready for that, let's push it along.
const parent = tile.parent;
if (
surfaceTile.terrainState === TerrainState.FAILED &&
parent !== undefined
) {
const parentReady =
parent.data !== undefined &&
parent.data.terrainData !== undefined &&
parent.data.terrainData.canUpsample !== false;
if (!parentReady) {
GlobeSurfaceTile.processStateMachine(
parent,
frameState,
terrainProvider,
imageryLayerCollection,
quadtree,
vertexArraysToDestroy,
true,
);
}
}
if (surfaceTile.terrainState === TerrainState.FAILED) {
upsample(
surfaceTile,
tile,
frameState,
terrainProvider,
tile.x,
tile.y,
tile.level,
);
}
if (surfaceTile.terrainState === TerrainState.UNLOADED) {
requestTileGeometry(
surfaceTile,
terrainProvider,
tile.x,
tile.y,
tile.level,
);
}
if (surfaceTile.terrainState === TerrainState.RECEIVED) {
transform(
surfaceTile,
frameState,
terrainProvider,
tile.x,
tile.y,
tile.level,
);
}
if (surfaceTile.terrainState === TerrainState.TRANSFORMED) {
createResources(
surfaceTile,
frameState.context,
terrainProvider,
tile.x,
tile.y,
tile.level,
vertexArraysToDestroy,
);
// Update the tile's exaggeration in case the globe's exaggeration changed while the tile was being processed
surfaceTile.updateExaggeration(tile, frameState, quadtree);
}
if (
surfaceTile.terrainState >= TerrainState.RECEIVED &&
surfaceTile.waterMaskTexture === undefined &&
terrainProvider.hasWaterMask
) {
const terrainData = surfaceTile.terrainData;
if (terrainData.waterMask !== undefined) {
createWaterMaskTextureIfNeeded(frameState.context, surfaceTile);
} else {
const sourceTile = surfaceTile._findAncestorTileWithTerrainData(tile);
if (defined(sourceTile) && defined(sourceTile.data.waterMaskTexture)) {
surfaceTile.waterMaskTexture = sourceTile.data.waterMaskTexture;
++surfaceTile.waterMaskTexture.referenceCount;
surfaceTile._computeWaterMaskTranslationAndScale(
tile,
sourceTile,
surfaceTile.waterMaskTranslationAndScale,
);
}
}
}
}
function upsample(surfaceTile, tile, frameState, terrainProvider, x, y, level) {
const parent = tile.parent;
if (!parent) {
// Trying to upsample from a root tile. No can do. This tile is a failure.
tile.state = QuadtreeTileLoadState.FAILED;
return;
}
const sourceData = parent.data.terrainData;
const sourceX = parent.x;
const sourceY = parent.y;
const sourceLevel = parent.level;
if (!defined(sourceData)) {
// Parent is not available, so we can't upsample this tile yet.
return;
}
const terrainDataPromise = sourceData.upsample(
terrainProvider.tilingScheme,
sourceX,
sourceY,
sourceLevel,
x,
y,
level,
);
if (!defined(terrainDataPromise)) {
// The upsample request has been deferred - try again later.
return;
}
surfaceTile.terrainState = TerrainState.RECEIVING;
Promise.resolve(terrainDataPromise)
.then(function (terrainData) {
Iif (!defined(terrainData)) {
// The upsample request has been deferred - try again later.
return;
}
surfaceTile.terrainData = terrainData;
surfaceTile.terrainState = TerrainState.RECEIVED;
})
.catch(function () {
surfaceTile.terrainState = TerrainState.FAILED;
});
}
function requestTileGeometry(surfaceTile, terrainProvider, x, y, level) {
function success(terrainData) {
Iif (!defined(terrainData)) {
// Throttled due to low priority - try again later.
surfaceTile.terrainState = TerrainState.UNLOADED;
surfaceTile.request = undefined;
return;
}
surfaceTile.terrainData = terrainData;
surfaceTile.terrainState = TerrainState.RECEIVED;
surfaceTile.request = undefined;
}
function failure(error) {
Iif (surfaceTile.request.state === RequestState.CANCELLED) {
// Cancelled due to low priority - try again later.
surfaceTile.terrainData = undefined;
surfaceTile.terrainState = TerrainState.UNLOADED;
surfaceTile.request = undefined;
return;
}
// Initially assume failure. reportError may retry, in which case the state will
// change to RECEIVING or UNLOADED.
surfaceTile.terrainState = TerrainState.FAILED;
surfaceTile.request = undefined;
const message = `Failed to obtain terrain tile X: ${x} Y: ${y} Level: ${level}. Error message: "${error}"`;
terrainProvider._requestError = TileProviderError.reportError(
terrainProvider._requestError,
terrainProvider,
terrainProvider.errorEvent,
message,
x,
y,
level,
);
Iif (terrainProvider._requestError.retry) {
doRequest();
}
}
function doRequest() {
// Request the terrain from the terrain provider.
const request = new Request({
throttle: false,
throttleByServer: true,
type: RequestType.TERRAIN,
});
surfaceTile.request = request;
const requestPromise = terrainProvider.requestTileGeometry(
x,
y,
level,
request,
);
// If the request method returns undefined (instead of a promise), the request
// has been deferred.
if (defined(requestPromise)) {
surfaceTile.terrainState = TerrainState.RECEIVING;
Promise.resolve(requestPromise)
.then(function (terrainData) {
success(terrainData);
})
.catch(function (e) {
failure(e);
});
} else {
// Deferred - try again later.
surfaceTile.terrainState = TerrainState.UNLOADED;
surfaceTile.request = undefined;
}
}
doRequest();
}
const scratchCreateMeshOptions = {
tilingScheme: undefined,
x: 0,
y: 0,
level: 0,
exaggeration: 1.0,
exaggerationRelativeHeight: 0.0,
throttle: true,
};
function transform(surfaceTile, frameState, terrainProvider, x, y, level) {
const tilingScheme = terrainProvider.tilingScheme;
const createMeshOptions = scratchCreateMeshOptions;
createMeshOptions.tilingScheme = tilingScheme;
createMeshOptions.x = x;
createMeshOptions.y = y;
createMeshOptions.level = level;
createMeshOptions.exaggeration = frameState.verticalExaggeration;
createMeshOptions.exaggerationRelativeHeight =
frameState.verticalExaggerationRelativeHeight;
createMeshOptions.throttle = true;
const terrainData = surfaceTile.terrainData;
const meshPromise = terrainData.createMesh(createMeshOptions);
if (!defined(meshPromise)) {
// Postponed.
return;
}
surfaceTile.terrainState = TerrainState.TRANSFORMING;
Promise.resolve(meshPromise)
.then(function (mesh) {
surfaceTile.mesh = mesh;
surfaceTile.terrainState = TerrainState.TRANSFORMED;
})
.catch(function () {
surfaceTile.terrainState = TerrainState.FAILED;
});
}
GlobeSurfaceTile._createVertexArrayForMesh = function (context, mesh) {
const typedArray = mesh.vertices;
const buffer = Buffer.createVertexBuffer({
context: context,
typedArray: typedArray,
usage: BufferUsage.STATIC_DRAW,
});
const attributes = mesh.encoding.getAttributes(buffer);
const indexBuffers = mesh.indices.indexBuffers || {};
let indexBuffer = indexBuffers[context.id];
if (!defined(indexBuffer) || indexBuffer.isDestroyed()) {
const indices = mesh.indices;
indexBuffer = Buffer.createIndexBuffer({
context: context,
typedArray: indices,
usage: BufferUsage.STATIC_DRAW,
indexDatatype: IndexDatatype.fromSizeInBytes(indices.BYTES_PER_ELEMENT),
});
indexBuffer.vertexArrayDestroyable = false;
indexBuffer.referenceCount = 1;
indexBuffers[context.id] = indexBuffer;
mesh.indices.indexBuffers = indexBuffers;
} else {
++indexBuffer.referenceCount;
}
return new VertexArray({
context: context,
attributes: attributes,
indexBuffer: indexBuffer,
});
};
GlobeSurfaceTile._freeVertexArray = function (vertexArray) {
if (defined(vertexArray)) {
const indexBuffer = vertexArray.indexBuffer;
Eif (!vertexArray.isDestroyed()) {
vertexArray.destroy();
}
if (
defined(indexBuffer) &&
!indexBuffer.isDestroyed() &&
defined(indexBuffer.referenceCount)
) {
--indexBuffer.referenceCount;
if (indexBuffer.referenceCount === 0) {
indexBuffer.destroy();
}
}
}
};
function createResources(
surfaceTile,
context,
terrainProvider,
x,
y,
level,
vertexArraysToDestroy,
) {
surfaceTile.vertexArray = GlobeSurfaceTile._createVertexArrayForMesh(
context,
surfaceTile.mesh,
);
surfaceTile.terrainState = TerrainState.READY;
surfaceTile.fill =
surfaceTile.fill && surfaceTile.fill.destroy(vertexArraysToDestroy);
}
function getContextWaterMaskData(context) {
let data = context.cache.tile_waterMaskData;
if (!defined(data)) {
const allWaterTexture = Texture.create({
context: context,
pixelFormat: PixelFormat.LUMINANCE,
pixelDatatype: PixelDatatype.UNSIGNED_BYTE,
source: {
arrayBufferView: new Uint8Array([255]),
width: 1,
height: 1,
},
});
allWaterTexture.referenceCount = 1;
const sampler = new Sampler({
wrapS: TextureWrap.CLAMP_TO_EDGE,
wrapT: TextureWrap.CLAMP_TO_EDGE,
minificationFilter: TextureMinificationFilter.LINEAR,
magnificationFilter: TextureMagnificationFilter.LINEAR,
});
data = {
allWaterTexture: allWaterTexture,
sampler: sampler,
destroy: function () {
this.allWaterTexture.destroy();
},
};
context.cache.tile_waterMaskData = data;
}
return data;
}
function createWaterMaskTextureIfNeeded(context, surfaceTile) {
const waterMask = surfaceTile.terrainData.waterMask;
const waterMaskData = getContextWaterMaskData(context);
let texture;
const waterMaskLength = waterMask.length;
Iif (waterMask instanceof ImageBitmap) {
texture = Texture.create({
context: context,
source: waterMask,
sampler: waterMaskData.sampler,
flipY: false,
skipColorSpaceConversion: true,
});
} else if (waterMaskLength === 1) {
// Length 1 means the tile is entirely land or entirely water.
// A value of 0 indicates entirely land, a value of 1 indicates entirely water.
if (waterMask[0] !== 0) {
texture = waterMaskData.allWaterTexture;
} else {
// Leave the texture undefined if the tile is entirely land.
return;
}
} else {
const textureSize = Math.sqrt(waterMaskLength);
texture = Texture.create({
context: context,
pixelFormat: PixelFormat.LUMINANCE,
pixelDatatype: PixelDatatype.UNSIGNED_BYTE,
source: {
width: textureSize,
height: textureSize,
arrayBufferView: waterMask,
},
sampler: waterMaskData.sampler,
flipY: false,
});
texture.referenceCount = 0;
}
++texture.referenceCount;
surfaceTile.waterMaskTexture = texture;
Cartesian4.fromElements(
0.0,
0.0,
1.0,
1.0,
surfaceTile.waterMaskTranslationAndScale,
);
}
GlobeSurfaceTile.prototype._findAncestorTileWithTerrainData = function (tile) {
let sourceTile = tile.parent;
while (
defined(sourceTile) &&
(!defined(sourceTile.data) ||
!defined(sourceTile.data.terrainData) ||
sourceTile.data.terrainData.wasCreatedByUpsampling())
) {
sourceTile = sourceTile.parent;
}
return sourceTile;
};
GlobeSurfaceTile.prototype._computeWaterMaskTranslationAndScale = function (
tile,
sourceTile,
result,
) {
const sourceTileRectangle = sourceTile.rectangle;
const tileRectangle = tile.rectangle;
const tileWidth = tileRectangle.width;
const tileHeight = tileRectangle.height;
const scaleX = tileWidth / sourceTileRectangle.width;
const scaleY = tileHeight / sourceTileRectangle.height;
result.x =
(scaleX * (tileRectangle.west - sourceTileRectangle.west)) / tileWidth;
result.y =
(scaleY * (tileRectangle.south - sourceTileRectangle.south)) / tileHeight;
result.z = scaleX;
result.w = scaleY;
return result;
};
export default GlobeSurfaceTile;
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