import BoundingSphere from '../Core/BoundingSphere.js';
import BoxOutlineGeometry from '../Core/BoxOutlineGeometry.js';
import Cartesian2 from '../Core/Cartesian2.js';
import Cartesian3 from '../Core/Cartesian3.js';
import Cartesian4 from '../Core/Cartesian4.js';
import Cartographic from '../Core/Cartographic.js';
import Color from '../Core/Color.js';
import ColorGeometryInstanceAttribute from '../Core/ColorGeometryInstanceAttribute.js';
import combine from '../Core/combine.js';
import defaultValue from '../Core/defaultValue.js';
import defined from '../Core/defined.js';
import defineProperties from '../Core/defineProperties.js';
import destroyObject from '../Core/destroyObject.js';
import DeveloperError from '../Core/DeveloperError.js';
import Event from '../Core/Event.js';
import GeometryInstance from '../Core/GeometryInstance.js';
import GeometryPipeline from '../Core/GeometryPipeline.js';
import IndexDatatype from '../Core/IndexDatatype.js';
import Intersect from '../Core/Intersect.js';
import CesiumMath from '../Core/Math.js';
import Matrix4 from '../Core/Matrix4.js';
import OrientedBoundingBox from '../Core/OrientedBoundingBox.js';
import OrthographicFrustum from '../Core/OrthographicFrustum.js';
import PrimitiveType from '../Core/PrimitiveType.js';
import Rectangle from '../Core/Rectangle.js';
import SphereOutlineGeometry from '../Core/SphereOutlineGeometry.js';
import TerrainQuantization from '../Core/TerrainQuantization.js';
import Visibility from '../Core/Visibility.js';
import WebMercatorProjection from '../Core/WebMercatorProjection.js';
import Buffer from '../Renderer/Buffer.js';
import BufferUsage from '../Renderer/BufferUsage.js';
import ContextLimits from '../Renderer/ContextLimits.js';
import DrawCommand from '../Renderer/DrawCommand.js';
import Pass from '../Renderer/Pass.js';
import RenderState from '../Renderer/RenderState.js';
import VertexArray from '../Renderer/VertexArray.js';
import BlendingState from './BlendingState.js';
import ClippingPlaneCollection from './ClippingPlaneCollection.js';
import DepthFunction from './DepthFunction.js';
import GlobeSurfaceTile from './GlobeSurfaceTile.js';
import ImageryLayer from './ImageryLayer.js';
import ImageryState from './ImageryState.js';
import PerInstanceColorAppearance from './PerInstanceColorAppearance.js';
import Primitive from './Primitive.js';
import QuadtreeTileLoadState from './QuadtreeTileLoadState.js';
import SceneMode from './SceneMode.js';
import ShadowMode from './ShadowMode.js';
import TerrainFillMesh from './TerrainFillMesh.js';
import TerrainState from './TerrainState.js';
import TileBoundingRegion from './TileBoundingRegion.js';
import TileSelectionResult from './TileSelectionResult.js';
/**
* Provides quadtree tiles representing the surface of the globe. This type is intended to be used
* with {@link QuadtreePrimitive}.
*
* @alias GlobeSurfaceTileProvider
* @constructor
*
* @param {TerrainProvider} options.terrainProvider The terrain provider that describes the surface geometry.
* @param {ImageryLayerCollection} option.imageryLayers The collection of imagery layers describing the shading of the surface.
* @param {GlobeSurfaceShaderSet} options.surfaceShaderSet The set of shaders used to render the surface.
*
* @private
*/
function GlobeSurfaceTileProvider(options) {
//>>includeStart('debug', pragmas.debug);
if (!defined(options)) {
throw new DeveloperError('options is required.');
}
if (!defined(options.terrainProvider)) {
throw new DeveloperError('options.terrainProvider is required.');
} else if (!defined(options.imageryLayers)) {
throw new DeveloperError('options.imageryLayers is required.');
} else if (!defined(options.surfaceShaderSet)) {
throw new DeveloperError('options.surfaceShaderSet is required.');
}
//>>includeEnd('debug');
this.lightingFadeOutDistance = 6500000.0;
this.lightingFadeInDistance = 9000000.0;
this.hasWaterMask = false;
this.oceanNormalMap = undefined;
this.zoomedOutOceanSpecularIntensity = 0.5;
this.enableLighting = false;
this.showGroundAtmosphere = false;
this.shadows = ShadowMode.RECEIVE_ONLY;
/**
* The color to use to highlight terrain fill tiles. If undefined, fill tiles are not
* highlighted at all. The alpha value is used to alpha blend with the tile's
* actual color. Because terrain fill tiles do not represent the actual terrain surface,
* it may be useful in some applications to indicate visually that they are not to be trusted.
* @type {Color}
* @default undefined
*/
this.fillHighlightColor = undefined;
this.hueShift = 0.0;
this.saturationShift = 0.0;
this.brightnessShift = 0.0;
this._quadtree = undefined;
this._terrainProvider = options.terrainProvider;
this._imageryLayers = options.imageryLayers;
this._surfaceShaderSet = options.surfaceShaderSet;
this._renderState = undefined;
this._blendRenderState = undefined;
this._errorEvent = new Event();
this._imageryLayers.layerAdded.addEventListener(GlobeSurfaceTileProvider.prototype._onLayerAdded, this);
this._imageryLayers.layerRemoved.addEventListener(GlobeSurfaceTileProvider.prototype._onLayerRemoved, this);
this._imageryLayers.layerMoved.addEventListener(GlobeSurfaceTileProvider.prototype._onLayerMoved, this);
this._imageryLayers.layerShownOrHidden.addEventListener(GlobeSurfaceTileProvider.prototype._onLayerShownOrHidden, this);
this._imageryLayersUpdatedEvent = new Event();
this._layerOrderChanged = false;
this._tilesToRenderByTextureCount = [];
this._drawCommands = [];
this._uniformMaps = [];
this._usedDrawCommands = 0;
this._vertexArraysToDestroy = [];
this._debug = {
wireframe : false,
boundingSphereTile : undefined
};
this._baseColor = undefined;
this._firstPassInitialColor = undefined;
this.baseColor = new Color(0.0, 0.0, 0.5, 1.0);
/**
* A property specifying a {@link ClippingPlaneCollection} used to selectively disable rendering on the outside of each plane.
* @type {ClippingPlaneCollection}
* @private
*/
this._clippingPlanes = undefined;
/**
* A property specifying a {@link Rectangle} used to selectively limit terrain and imagery rendering.
* @type {Rectangle}
*/
this.cartographicLimitRectangle = Rectangle.clone(Rectangle.MAX_VALUE);
this._hasLoadedTilesThisFrame = false;
this._hasFillTilesThisFrame = false;
}
defineProperties(GlobeSurfaceTileProvider.prototype, {
/**
* Gets or sets the color of the globe when no imagery is available.
* @memberof GlobeSurfaceTileProvider.prototype
* @type {Color}
*/
baseColor : {
get : function() {
return this._baseColor;
},
set : function(value) {
//>>includeStart('debug', pragmas.debug);
if (!defined(value)) {
throw new DeveloperError('value is required.');
}
//>>includeEnd('debug');
this._baseColor = value;
this._firstPassInitialColor = Cartesian4.fromColor(value, this._firstPassInitialColor);
}
},
/**
* Gets or sets the {@link QuadtreePrimitive} for which this provider is
* providing tiles. This property may be undefined if the provider is not yet associated
* with a {@link QuadtreePrimitive}.
* @memberof GlobeSurfaceTileProvider.prototype
* @type {QuadtreePrimitive}
*/
quadtree : {
get : function() {
return this._quadtree;
},
set : function(value) {
//>>includeStart('debug', pragmas.debug);
if (!defined(value)) {
throw new DeveloperError('value is required.');
}
//>>includeEnd('debug');
this._quadtree = value;
}
},
/**
* Gets a value indicating whether or not the provider is ready for use.
* @memberof GlobeSurfaceTileProvider.prototype
* @type {Boolean}
*/
ready : {
get : function() {
return this._terrainProvider.ready && (this._imageryLayers.length === 0 || this._imageryLayers.get(0).imageryProvider.ready);
}
},
/**
* Gets the tiling scheme used by the provider. This property should
* not be accessed before {@link GlobeSurfaceTileProvider#ready} returns true.
* @memberof GlobeSurfaceTileProvider.prototype
* @type {TilingScheme}
*/
tilingScheme : {
get : function() {
return this._terrainProvider.tilingScheme;
}
},
/**
* Gets an event that is raised when the geometry provider encounters an asynchronous error. By subscribing
* to the event, you will be notified of the error and can potentially recover from it. Event listeners
* are passed an instance of {@link TileProviderError}.
* @memberof GlobeSurfaceTileProvider.prototype
* @type {Event}
*/
errorEvent : {
get : function() {
return this._errorEvent;
}
},
/**
* Gets an event that is raised when an imagery layer is added, shown, hidden, moved, or removed.
* @memberof GlobeSurfaceTileProvider.prototype
* @type {Event}
*/
imageryLayersUpdatedEvent : {
get : function() {
return this._imageryLayersUpdatedEvent;
}
},
/**
* Gets or sets the terrain provider that describes the surface geometry.
* @memberof GlobeSurfaceTileProvider.prototype
* @type {TerrainProvider}
*/
terrainProvider : {
get : function() {
return this._terrainProvider;
},
set : function(terrainProvider) {
if (this._terrainProvider === terrainProvider) {
return;
}
//>>includeStart('debug', pragmas.debug);
if (!defined(terrainProvider)) {
throw new DeveloperError('terrainProvider is required.');
}
//>>includeEnd('debug');
this._terrainProvider = terrainProvider;
if (defined(this._quadtree)) {
this._quadtree.invalidateAllTiles();
}
}
},
/**
* The {@link ClippingPlaneCollection} used to selectively disable rendering the tileset.
*
* @type {ClippingPlaneCollection}
*
* @private
*/
clippingPlanes : {
get : function() {
return this._clippingPlanes;
},
set : function(value) {
ClippingPlaneCollection.setOwner(value, this, '_clippingPlanes');
}
}
});
function sortTileImageryByLayerIndex(a, b) {
var aImagery = a.loadingImagery;
if (!defined(aImagery)) {
aImagery = a.readyImagery;
}
var bImagery = b.loadingImagery;
if (!defined(bImagery)) {
bImagery = b.readyImagery;
}
return aImagery.imageryLayer._layerIndex - bImagery.imageryLayer._layerIndex;
}
/**
* Make updates to the tile provider that are not involved in rendering. Called before the render update cycle.
*/
GlobeSurfaceTileProvider.prototype.update = function(frameState) {
// update collection: imagery indices, base layers, raise layer show/hide event
this._imageryLayers._update();
};
function updateCredits(surface, frameState) {
var creditDisplay = frameState.creditDisplay;
if (surface._terrainProvider.ready && defined(surface._terrainProvider.credit)) {
creditDisplay.addCredit(surface._terrainProvider.credit);
}
var imageryLayers = surface._imageryLayers;
for (var i = 0, len = imageryLayers.length; i < len; ++i) {
var imageryProvider = imageryLayers.get(i).imageryProvider;
if (imageryProvider.ready && defined(imageryProvider.credit)) {
creditDisplay.addCredit(imageryProvider.credit);
}
}
}
/**
* Called at the beginning of each render frame, before {@link QuadtreeTileProvider#showTileThisFrame}
* @param {FrameState} frameState The frame state.
*/
GlobeSurfaceTileProvider.prototype.initialize = function(frameState) {
// update each layer for texture reprojection.
this._imageryLayers.queueReprojectionCommands(frameState);
if (this._layerOrderChanged) {
this._layerOrderChanged = false;
// Sort the TileImagery instances in each tile by the layer index.
this._quadtree.forEachLoadedTile(function(tile) {
tile.data.imagery.sort(sortTileImageryByLayerIndex);
});
}
// Add credits for terrain and imagery providers.
updateCredits(this, frameState);
var vertexArraysToDestroy = this._vertexArraysToDestroy;
var length = vertexArraysToDestroy.length;
for (var j = 0; j < length; ++j) {
GlobeSurfaceTile._freeVertexArray(vertexArraysToDestroy[j]);
}
vertexArraysToDestroy.length = 0;
};
/**
* Called at the beginning of the update cycle for each render frame, before {@link QuadtreeTileProvider#showTileThisFrame}
* or any other functions.
*
* @param {FrameState} frameState The frame state.
*/
GlobeSurfaceTileProvider.prototype.beginUpdate = function(frameState) {
var tilesToRenderByTextureCount = this._tilesToRenderByTextureCount;
for (var i = 0, len = tilesToRenderByTextureCount.length; i < len; ++i) {
var tiles = tilesToRenderByTextureCount[i];
if (defined(tiles)) {
tiles.length = 0;
}
}
// update clipping planes
var clippingPlanes = this._clippingPlanes;
if (defined(clippingPlanes) && clippingPlanes.enabled) {
clippingPlanes.update(frameState);
}
this._usedDrawCommands = 0;
this._hasLoadedTilesThisFrame = false;
this._hasFillTilesThisFrame = false;
};
/**
* Called at the end of the update cycle for each render frame, after {@link QuadtreeTileProvider#showTileThisFrame}
* and any other functions.
*
* @param {FrameState} frameState The frame state.
*/
GlobeSurfaceTileProvider.prototype.endUpdate = function(frameState) {
if (!defined(this._renderState)) {
this._renderState = RenderState.fromCache({ // Write color and depth
cull : {
enabled : true
},
depthTest : {
enabled : true,
func : DepthFunction.LESS
}
});
this._blendRenderState = RenderState.fromCache({ // Write color and depth
cull : {
enabled : true
},
depthTest : {
enabled : true,
func : DepthFunction.LESS_OR_EQUAL
},
blending : BlendingState.ALPHA_BLEND
});
}
// If this frame has a mix of loaded and fill tiles, we need to propagate
// loaded heights to the fill tiles.
if (this._hasFillTilesThisFrame && this._hasLoadedTilesThisFrame) {
TerrainFillMesh.updateFillTiles(this, this._quadtree._tilesToRender, frameState, this._vertexArraysToDestroy);
}
// Add the tile render commands to the command list, sorted by texture count.
var tilesToRenderByTextureCount = this._tilesToRenderByTextureCount;
for (var textureCountIndex = 0, textureCountLength = tilesToRenderByTextureCount.length; textureCountIndex < textureCountLength; ++textureCountIndex) {
var tilesToRender = tilesToRenderByTextureCount[textureCountIndex];
if (!defined(tilesToRender)) {
continue;
}
for (var tileIndex = 0, tileLength = tilesToRender.length; tileIndex < tileLength; ++tileIndex) {
addDrawCommandsForTile(this, tilesToRender[tileIndex], frameState);
}
}
};
/**
* Adds draw commands for tiles rendered in the previous frame for a pick pass.
*
* @param {FrameState} frameState The frame state.
*/
GlobeSurfaceTileProvider.prototype.updateForPick = function(frameState) {
// Add the tile pick commands from the tiles drawn last frame.
var drawCommands = this._drawCommands;
for (var i = 0, length = this._usedDrawCommands; i < length; ++i) {
frameState.commandList.push(drawCommands[i]);
}
};
/**
* Cancels any imagery re-projections in the queue.
*/
GlobeSurfaceTileProvider.prototype.cancelReprojections = function() {
this._imageryLayers.cancelReprojections();
};
/**
* Gets the maximum geometric error allowed in a tile at a given level, in meters. This function should not be
* called before {@link GlobeSurfaceTileProvider#ready} returns true.
*
* @param {Number} level The tile level for which to get the maximum geometric error.
* @returns {Number} The maximum geometric error in meters.
*/
GlobeSurfaceTileProvider.prototype.getLevelMaximumGeometricError = function(level) {
return this._terrainProvider.getLevelMaximumGeometricError(level);
};
/**
* Loads, or continues loading, a given tile. This function will continue to be called
* until {@link QuadtreeTile#state} is no longer {@link QuadtreeTileLoadState#LOADING}. This function should
* not be called before {@link GlobeSurfaceTileProvider#ready} returns true.
*
* @param {FrameState} frameState The frame state.
* @param {QuadtreeTile} tile The tile to load.
*
* @exception {DeveloperError} loadTile must not be called before the tile provider is ready.
*/
GlobeSurfaceTileProvider.prototype.loadTile = function(frameState, tile) {
// We don't want to load imagery until we're certain that the terrain tiles are actually visible.
// So if our bounding volume isn't accurate because it came from another tile, load terrain only
// initially. If we load some terrain and suddenly have a more accurate bounding volume and the
// tile is _still_ visible, give the tile a chance to load imagery immediately rather than
// waiting for next frame.
var surfaceTile = tile.data;
var terrainOnly = true;
var terrainStateBefore;
if (defined(surfaceTile)) {
terrainOnly = surfaceTile.boundingVolumeSourceTile !== tile || tile._lastSelectionResult === TileSelectionResult.CULLED_BUT_NEEDED;
terrainStateBefore = surfaceTile.terrainState;
}
GlobeSurfaceTile.processStateMachine(tile, frameState, this.terrainProvider, this._imageryLayers, this._vertexArraysToDestroy, terrainOnly);
surfaceTile = tile.data;
if (terrainOnly && terrainStateBefore !== tile.data.terrainState) {
// Terrain state changed. If:
// a) The tile is visible, and
// b) The bounding volume is accurate (updated as a side effect of computing visibility)
// Then we'll load imagery, too.
if (this.computeTileVisibility(tile, frameState, this.quadtree.occluders) && surfaceTile.boundingVolumeSourceTile === tile) {
terrainOnly = false;
GlobeSurfaceTile.processStateMachine(tile, frameState, this.terrainProvider, this._imageryLayers, this._vertexArraysToDestroy, terrainOnly);
}
}
};
var boundingSphereScratch = new BoundingSphere();
var rectangleIntersectionScratch = new Rectangle();
var splitCartographicLimitRectangleScratch = new Rectangle();
var rectangleCenterScratch = new Cartographic();
// cartographicLimitRectangle may span the IDL, but tiles never will.
function clipRectangleAntimeridian(tileRectangle, cartographicLimitRectangle) {
if (cartographicLimitRectangle.west < cartographicLimitRectangle.east) {
return cartographicLimitRectangle;
}
var splitRectangle = Rectangle.clone(cartographicLimitRectangle, splitCartographicLimitRectangleScratch);
var tileCenter = Rectangle.center(tileRectangle, rectangleCenterScratch);
if (tileCenter.longitude > 0.0) {
splitRectangle.east = CesiumMath.PI;
} else {
splitRectangle.west = -CesiumMath.PI;
}
return splitRectangle;
}
/**
* Determines the visibility of a given tile. The tile may be fully visible, partially visible, or not
* visible at all. Tiles that are renderable and are at least partially visible will be shown by a call
* to {@link GlobeSurfaceTileProvider#showTileThisFrame}.
*
* @param {QuadtreeTile} tile The tile instance.
* @param {FrameState} frameState The state information about the current frame.
* @param {QuadtreeOccluders} occluders The objects that may occlude this tile.
*
* @returns {Visibility} The visibility of the tile.
*/
GlobeSurfaceTileProvider.prototype.computeTileVisibility = function(tile, frameState, occluders) {
var distance = this.computeDistanceToTile(tile, frameState);
tile._distance = distance;
if (frameState.fog.enabled) {
if (CesiumMath.fog(distance, frameState.fog.density) >= 1.0) {
// Tile is completely in fog so return that it is not visible.
return Visibility.NONE;
}
}
var surfaceTile = tile.data;
var tileBoundingRegion = surfaceTile.tileBoundingRegion;
if (surfaceTile.boundingVolumeSourceTile === undefined) {
// We have no idea where this tile is, so let's just call it partially visible.
return Visibility.PARTIAL;
}
var cullingVolume = frameState.cullingVolume;
var boundingVolume = surfaceTile.orientedBoundingBox;
if (!defined(boundingVolume) && defined(surfaceTile.renderedMesh)) {
boundingVolume = surfaceTile.renderedMesh.boundingSphere3D;
}
// Check if the tile is outside the limit area in cartographic space
surfaceTile.clippedByBoundaries = false;
var clippedCartographicLimitRectangle = clipRectangleAntimeridian(tile.rectangle, this.cartographicLimitRectangle);
var areaLimitIntersection = Rectangle.simpleIntersection(clippedCartographicLimitRectangle, tile.rectangle, rectangleIntersectionScratch);
if (!defined(areaLimitIntersection)) {
return Visibility.NONE;
}
if (!Rectangle.equals(areaLimitIntersection, tile.rectangle)) {
surfaceTile.clippedByBoundaries = true;
}
if (frameState.mode !== SceneMode.SCENE3D) {
boundingVolume = boundingSphereScratch;
BoundingSphere.fromRectangleWithHeights2D(tile.rectangle, frameState.mapProjection, tileBoundingRegion.minimumHeight, tileBoundingRegion.maximumHeight, boundingVolume);
Cartesian3.fromElements(boundingVolume.center.z, boundingVolume.center.x, boundingVolume.center.y, boundingVolume.center);
if (frameState.mode === SceneMode.MORPHING && defined(surfaceTile.renderedMesh)) {
boundingVolume = BoundingSphere.union(surfaceTile.renderedMesh.boundingSphere3D, boundingVolume, boundingVolume);
}
}
if (!defined(boundingVolume)) {
return Intersect.INTERSECTING;
}
var clippingPlanes = this._clippingPlanes;
if (defined(clippingPlanes) && clippingPlanes.enabled) {
var planeIntersection = clippingPlanes.computeIntersectionWithBoundingVolume(boundingVolume);
tile.isClipped = (planeIntersection !== Intersect.INSIDE);
if (planeIntersection === Intersect.OUTSIDE) {
return Visibility.NONE;
}
}
var intersection = cullingVolume.computeVisibility(boundingVolume);
if (intersection === Intersect.OUTSIDE) {
return Visibility.NONE;
}
var ortho3D = frameState.mode === SceneMode.SCENE3D && frameState.camera.frustum instanceof OrthographicFrustum;
if (frameState.mode === SceneMode.SCENE3D && !ortho3D && defined(occluders)) {
var occludeePointInScaledSpace = surfaceTile.occludeePointInScaledSpace;
if (!defined(occludeePointInScaledSpace)) {
return intersection;
}
if (occluders.ellipsoid.isScaledSpacePointVisible(occludeePointInScaledSpace)) {
return intersection;
}
return Visibility.NONE;
}
return intersection;
};
/**
* Determines if the given tile can be refined
* @param {QuadtreeTile} tile The tile to check.
* @returns {boolean} True if the tile can be refined, false if it cannot.
*/
GlobeSurfaceTileProvider.prototype.canRefine = function(tile) {
// Only allow refinement it we know whether or not the children of this tile exist.
// For a tileset with `availability`, we'll always be able to refine.
// We can ask for availability of _any_ child tile because we only need to confirm
// that we get a yes or no answer, it doesn't matter what the answer is.
if (defined(tile.data.terrainData)) {
return true;
}
var childAvailable = this.terrainProvider.getTileDataAvailable(tile.x * 2, tile.y * 2, tile.level + 1);
return childAvailable !== undefined;
};
var readyImageryScratch = [];
var canRenderTraversalStack = [];
/**
* Determines if the given not-fully-loaded tile can be rendered without losing detail that
* was present last frame as a result of rendering descendant tiles. This method will only be
* called if this tile's descendants were rendered last frame. If the tile is fully loaded,
* it is assumed that this method will return true and it will not be called.
* @param {QuadtreeTile} tile The tile to check.
* @returns {boolean} True if the tile can be rendered without losing detail.
*/
GlobeSurfaceTileProvider.prototype.canRenderWithoutLosingDetail = function(tile, frameState) {
var surfaceTile = tile.data;
var readyImagery = readyImageryScratch;
readyImagery.length = this._imageryLayers.length;
var terrainReady = false;
var initialImageryState = false;
var imagery;
if (defined(surfaceTile)) {
// We can render even with non-ready terrain as long as all our rendered descendants
// are missing terrain geometry too. i.e. if we rendered fills for more detailed tiles
// last frame, it's ok to render a fill for this tile this frame.
terrainReady = surfaceTile.terrainState === TerrainState.READY;
// Initially assume all imagery layers are ready, unless imagery hasn't been initialized at all.
initialImageryState = true;
imagery = surfaceTile.imagery;
}
var i;
var len;
for (i = 0, len = readyImagery.length; i < len; ++i) {
readyImagery[i] = initialImageryState;
}
if (defined(imagery)) {
for (i = 0, len = imagery.length; i < len; ++i) {
var tileImagery = imagery[i];
var loadingImagery = tileImagery.loadingImagery;
var isReady = !defined(loadingImagery) || loadingImagery.state === ImageryState.FAILED || loadingImagery.state === ImageryState.INVALID;
var layerIndex = (tileImagery.loadingImagery || tileImagery.readyImagery).imageryLayer._layerIndex;
// For a layer to be ready, all tiles belonging to that layer must be ready.
readyImagery[layerIndex] = isReady && readyImagery[layerIndex];
}
}
var lastFrame = this.quadtree._lastSelectionFrameNumber;
// Traverse the descendants looking for one with terrain or imagery that is not loaded on this tile.
var stack = canRenderTraversalStack;
stack.length = 0;
stack.push(tile.southwestChild, tile.southeastChild, tile.northwestChild, tile.northeastChild);
while (stack.length > 0) {
var descendant = stack.pop();
var lastFrameSelectionResult = descendant._lastSelectionResultFrame === lastFrame ? descendant._lastSelectionResult : TileSelectionResult.NONE;
if (lastFrameSelectionResult === TileSelectionResult.RENDERED) {
var descendantSurface = descendant.data;
if (!defined(descendantSurface)) {
// Descendant has no data, so it can't block rendering.
continue;
}
if (!terrainReady && descendant.data.terrainState === TerrainState.READY) {
// Rendered descendant has real terrain, but we don't. Rendering is blocked.
return false;
}
var descendantImagery = descendant.data.imagery;
for (i = 0, len = descendantImagery.length; i < len; ++i) {
var descendantTileImagery = descendantImagery[i];
var descendantLoadingImagery = descendantTileImagery.loadingImagery;
var descendantIsReady = !defined(descendantLoadingImagery) || descendantLoadingImagery.state === ImageryState.FAILED || descendantLoadingImagery.state === ImageryState.INVALID;
var descendantLayerIndex = (descendantTileImagery.loadingImagery || descendantTileImagery.readyImagery).imageryLayer._layerIndex;
// If this imagery tile of a descendant is ready but the layer isn't ready in this tile,
// then rendering is blocked.
if (descendantIsReady && !readyImagery[descendantLayerIndex]) {
return false;
}
}
} else if (lastFrameSelectionResult === TileSelectionResult.REFINED) {
stack.push(descendant.southwestChild, descendant.southeastChild, descendant.northwestChild, descendant.northeastChild);
}
}
return true;
};
var tileDirectionScratch = new Cartesian3();
/**
* Determines the priority for loading this tile. Lower priority values load sooner.
* @param {QuadtreeTile} tile The tile.
* @param {FrameState} frameState The frame state.
* @returns {Number} The load priority value.
*/
GlobeSurfaceTileProvider.prototype.computeTileLoadPriority = function(tile, frameState) {
var surfaceTile = tile.data;
if (surfaceTile === undefined) {
return 0.0;
}
var obb = surfaceTile.orientedBoundingBox;
if (obb === undefined) {
return 0.0;
}
var cameraPosition = frameState.camera.positionWC;
var cameraDirection = frameState.camera.directionWC;
var tileDirection = Cartesian3.subtract(obb.center, cameraPosition, tileDirectionScratch);
var magnitude = Cartesian3.magnitude(tileDirection);
if (magnitude < CesiumMath.EPSILON5) {
return 0.0;
}
Cartesian3.divideByScalar(tileDirection, magnitude, tileDirection);
return (1.0 - Cartesian3.dot(tileDirection, cameraDirection)) * tile._distance;
};
var modifiedModelViewScratch = new Matrix4();
var modifiedModelViewProjectionScratch = new Matrix4();
var tileRectangleScratch = new Cartesian4();
var localizedCartographicLimitRectangleScratch = new Cartesian4();
var rtcScratch = new Cartesian3();
var centerEyeScratch = new Cartesian3();
var southwestScratch = new Cartesian3();
var northeastScratch = new Cartesian3();
/**
* Shows a specified tile in this frame. The provider can cause the tile to be shown by adding
* render commands to the commandList, or use any other method as appropriate. The tile is not
* expected to be visible next frame as well, unless this method is called next frame, too.
*
* @param {QuadtreeTile} tile The tile instance.
* @param {FrameState} frameState The state information of the current rendering frame.
*/
GlobeSurfaceTileProvider.prototype.showTileThisFrame = function(tile, frameState) {
var readyTextureCount = 0;
var tileImageryCollection = tile.data.imagery;
for (var i = 0, len = tileImageryCollection.length; i < len; ++i) {
var tileImagery = tileImageryCollection[i];
if (defined(tileImagery.readyImagery) && tileImagery.readyImagery.imageryLayer.alpha !== 0.0) {
++readyTextureCount;
}
}
var tileSet = this._tilesToRenderByTextureCount[readyTextureCount];
if (!defined(tileSet)) {
tileSet = [];
this._tilesToRenderByTextureCount[readyTextureCount] = tileSet;
}
tileSet.push(tile);
var surfaceTile = tile.data;
if (!defined(surfaceTile.vertexArray)) {
this._hasFillTilesThisFrame = true;
} else {
this._hasLoadedTilesThisFrame = true;
}
var debug = this._debug;
++debug.tilesRendered;
debug.texturesRendered += readyTextureCount;
};
var cornerPositionsScratch = [new Cartesian3(), new Cartesian3(), new Cartesian3(), new Cartesian3()];
function computeOccludeePoint(tileProvider, center, rectangle, height, result) {
var ellipsoidalOccluder = tileProvider.quadtree._occluders.ellipsoid;
var ellipsoid = ellipsoidalOccluder.ellipsoid;
var cornerPositions = cornerPositionsScratch;
Cartesian3.fromRadians(rectangle.west, rectangle.south, height, ellipsoid, cornerPositions[0]);
Cartesian3.fromRadians(rectangle.east, rectangle.south, height, ellipsoid, cornerPositions[1]);
Cartesian3.fromRadians(rectangle.west, rectangle.north, height, ellipsoid, cornerPositions[2]);
Cartesian3.fromRadians(rectangle.east, rectangle.north, height, ellipsoid, cornerPositions[3]);
return ellipsoidalOccluder.computeHorizonCullingPoint(center, cornerPositions, result);
}
/**
* Gets the distance from the camera to the closest point on the tile. This is used for level-of-detail selection.
*
* @param {QuadtreeTile} tile The tile instance.
* @param {FrameState} frameState The state information of the current rendering frame.
*
* @returns {Number} The distance from the camera to the closest point on the tile, in meters.
*/
GlobeSurfaceTileProvider.prototype.computeDistanceToTile = function(tile, frameState) {
// The distance should be:
// 1. the actual distance to the tight-fitting bounding volume, or
// 2. a distance that is equal to or greater than the actual distance to the tight-fitting bounding volume.
//
// When we don't know the min/max heights for a tile, but we do know the min/max of an ancestor tile, we can
// build a tight-fitting bounding volume horizontally, but not vertically. The min/max heights from the
// ancestor will likely form a volume that is much bigger than it needs to be. This means that the volume may
// be deemed to be much closer to the camera than it really is, causing us to select tiles that are too detailed.
// Loading too-detailed tiles is super expensive, so we don't want to do that. We don't know where the child
// tile really lies within the parent range of heights, but we _do_ know the child tile can't be any closer than
// the ancestor height surface (min or max) that is _farthest away_ from the camera. So if we compute distance
// based that conservative metric, we may end up loading tiles that are not detailed enough, but that's much
// better (faster) than loading tiles that are too detailed.
var heightSource = updateTileBoundingRegion(tile, this.terrainProvider, frameState);
var surfaceTile = tile.data;
var tileBoundingRegion = surfaceTile.tileBoundingRegion;
if (heightSource === undefined) {
// Can't find any min/max heights anywhere? Ok, let's just say the
// tile is really far away so we'll load and render it rather than
// refining.
return 9999999999.0;
} else if (surfaceTile.boundingVolumeSourceTile !== heightSource) {
// Heights are from a new source tile, so update the bounding volume.
surfaceTile.boundingVolumeSourceTile = heightSource;
var rectangle = tile.rectangle;
if (defined(rectangle) && rectangle.width < CesiumMath.PI_OVER_TWO + CesiumMath.EPSILON5) {
surfaceTile.orientedBoundingBox = OrientedBoundingBox.fromRectangle(
tile.rectangle,
tileBoundingRegion.minimumHeight,
tileBoundingRegion.maximumHeight,
tile.tilingScheme.ellipsoid,
surfaceTile.orientedBoundingBox);
surfaceTile.occludeePointInScaledSpace = computeOccludeePoint(this, surfaceTile.orientedBoundingBox.center, tile.rectangle, tileBoundingRegion.maximumHeight, surfaceTile.occludeePointInScaledSpace);
}
}
var min = tileBoundingRegion.minimumHeight;
var max = tileBoundingRegion.maximumHeight;
if (surfaceTile.boundingVolumeSourceTile !== tile) {
var cameraHeight = frameState.camera.positionCartographic.height;
var distanceToMin = Math.abs(cameraHeight - min);
var distanceToMax = Math.abs(cameraHeight - max);
if (distanceToMin > distanceToMax) {
tileBoundingRegion.minimumHeight = min;
tileBoundingRegion.maximumHeight = min;
} else {
tileBoundingRegion.minimumHeight = max;
tileBoundingRegion.maximumHeight = max;
}
}
var result = tileBoundingRegion.distanceToCamera(frameState);
tileBoundingRegion.minimumHeight = min;
tileBoundingRegion.maximumHeight = max;
return result;
};
function updateTileBoundingRegion(tile, terrainProvider, frameState) {
var surfaceTile = tile.data;
if (surfaceTile === undefined) {
surfaceTile = tile.data = new GlobeSurfaceTile();
}
if (surfaceTile.tileBoundingRegion === undefined) {
surfaceTile.tileBoundingRegion = new TileBoundingRegion({
computeBoundingVolumes : false,
rectangle : tile.rectangle,
ellipsoid : tile.tilingScheme.ellipsoid,
minimumHeight : 0.0,
maximumHeight : 0.0
});
}
var terrainData = surfaceTile.terrainData;
var mesh = surfaceTile.mesh;
var tileBoundingRegion = surfaceTile.tileBoundingRegion;
if (mesh !== undefined && mesh.minimumHeight !== undefined && mesh.maximumHeight !== undefined) {
// We have tight-fitting min/max heights from the mesh.
tileBoundingRegion.minimumHeight = mesh.minimumHeight;
tileBoundingRegion.maximumHeight = mesh.maximumHeight;
return tile;
}
if (terrainData !== undefined && terrainData._minimumHeight !== undefined && terrainData._maximumHeight !== undefined) {
// We have tight-fitting min/max heights from the terrain data.
tileBoundingRegion.minimumHeight = terrainData._minimumHeight * frameState.terrainExaggeration;
tileBoundingRegion.maximumHeight = terrainData._maximumHeight * frameState.terrainExaggeration;
return tile;
}
// No accurate min/max heights available, so we're stuck with min/max heights from an ancestor tile.
tileBoundingRegion.minimumHeight = Number.NaN;
tileBoundingRegion.maximumHeight = Number.NaN;
var ancestor = tile.parent;
while (ancestor !== undefined) {
var ancestorSurfaceTile = ancestor.data;
if (ancestorSurfaceTile !== undefined) {
var ancestorMesh = ancestorSurfaceTile.mesh;
if (ancestorMesh !== undefined && ancestorMesh.minimumHeight !== undefined && ancestorMesh.maximumHeight !== undefined) {
tileBoundingRegion.minimumHeight = ancestorMesh.minimumHeight;
tileBoundingRegion.maximumHeight = ancestorMesh.maximumHeight;
return ancestor;
}
var ancestorTerrainData = ancestorSurfaceTile.terrainData;
if (ancestorTerrainData !== undefined && ancestorTerrainData._minimumHeight !== undefined && ancestorTerrainData._maximumHeight !== undefined) {
tileBoundingRegion.minimumHeight = ancestorTerrainData._minimumHeight * frameState.terrainExaggeration;
tileBoundingRegion.maximumHeight = ancestorTerrainData._maximumHeight * frameState.terrainExaggeration;
return ancestor;
}
}
ancestor = ancestor.parent;
}
return undefined;
}
/**
* Returns true if this object was destroyed; otherwise, false.
*
* If this object was destroyed, it should not be used; calling any function other than
* isDestroyed will result in a {@link DeveloperError} exception.
*
* @returns {Boolean} True if this object was destroyed; otherwise, false.
*
* @see GlobeSurfaceTileProvider#destroy
*/
GlobeSurfaceTileProvider.prototype.isDestroyed = function() {
return false;
};
/**
* Destroys the WebGL resources held by this object. Destroying an object allows for deterministic
* release of WebGL resources, instead of relying on the garbage collector to destroy this object.
*
* Once an object is destroyed, it should not be used; calling any function other than
* isDestroyed will result in a {@link DeveloperError} exception. Therefore,
* assign the return value (undefined) to the object as done in the example.
*
* @exception {DeveloperError} This object was destroyed, i.e., destroy() was called.
*
*
* @example
* provider = provider && provider();
*
* @see GlobeSurfaceTileProvider#isDestroyed
*/
GlobeSurfaceTileProvider.prototype.destroy = function() {
this._tileProvider = this._tileProvider && this._tileProvider.destroy();
this._clippingPlanes = this._clippingPlanes && this._clippingPlanes.destroy();
return destroyObject(this);
};
function getTileReadyCallback(tileImageriesToFree, layer, terrainProvider) {
return function(tile) {
var tileImagery;
var imagery;
var startIndex = -1;
var tileImageryCollection = tile.data.imagery;
var length = tileImageryCollection.length;
var i;
for (i = 0; i < length; ++i) {
tileImagery = tileImageryCollection[i];
imagery = defaultValue(tileImagery.readyImagery, tileImagery.loadingImagery);
if (imagery.imageryLayer === layer) {
startIndex = i;
break;
}
}
if (startIndex !== -1) {
var endIndex = startIndex + tileImageriesToFree;
tileImagery = tileImageryCollection[endIndex];
imagery = defined(tileImagery) ? defaultValue(tileImagery.readyImagery, tileImagery.loadingImagery) : undefined;
if (!defined(imagery) || imagery.imageryLayer !== layer) {
// Return false to keep the callback if we have to wait on the skeletons
// Return true to remove the callback if something went wrong
return !(layer._createTileImagerySkeletons(tile, terrainProvider, endIndex));
}
for (i = startIndex; i < endIndex; ++i) {
tileImageryCollection[i].freeResources();
}
tileImageryCollection.splice(startIndex, tileImageriesToFree);
}
return true; // Everything is done, so remove the callback
};
}
GlobeSurfaceTileProvider.prototype._onLayerAdded = function(layer, index) {
if (layer.show) {
var terrainProvider = this._terrainProvider;
var that = this;
var imageryProvider = layer.imageryProvider;
var tileImageryUpdatedEvent = this._imageryLayersUpdatedEvent;
imageryProvider._reload = function() {
// Clear the layer's cache
layer._imageryCache = {};
that._quadtree.forEachLoadedTile(function(tile) {
// If this layer is still waiting to for the loaded callback, just return
if (defined(tile._loadedCallbacks[layer._layerIndex])) {
return;
}
var i;
// Figure out how many TileImageries we will need to remove and where to insert new ones
var tileImageryCollection = tile.data.imagery;
var length = tileImageryCollection.length;
var startIndex = -1;
var tileImageriesToFree = 0;
for (i = 0; i < length; ++i) {
var tileImagery = tileImageryCollection[i];
var imagery = defaultValue(tileImagery.readyImagery, tileImagery.loadingImagery);
if (imagery.imageryLayer === layer) {
if (startIndex === -1) {
startIndex = i;
}
++tileImageriesToFree;
} else if (startIndex !== -1) {
// iterated past the section of TileImageries belonging to this layer, no need to continue.
break;
}
}
if (startIndex === -1) {
return;
}
// Insert immediately after existing TileImageries
var insertionPoint = startIndex + tileImageriesToFree;
// Create new TileImageries for all loaded tiles
if (layer._createTileImagerySkeletons(tile, terrainProvider, insertionPoint)) {
// Add callback to remove old TileImageries when the new TileImageries are ready
tile._loadedCallbacks[layer._layerIndex] = getTileReadyCallback(tileImageriesToFree, layer, terrainProvider);
tile.state = QuadtreeTileLoadState.LOADING;
}
});
};
// create TileImageries for this layer for all previously loaded tiles
this._quadtree.forEachLoadedTile(function(tile) {
if (layer._createTileImagerySkeletons(tile, terrainProvider)) {
tile.state = QuadtreeTileLoadState.LOADING;
// Tiles that are not currently being rendered need to load the new layer before they're renderable.
// We don't mark the rendered tiles non-renderable, though, because that would make the globe disappear.
if (tile.level !== 0 && (tile._lastSelectionResultFrame !== that.quadtree._lastSelectionFrameNumber || tile._lastSelectionResult !== TileSelectionResult.RENDERED)) {
tile.renderable = false;
}
}
});
this._layerOrderChanged = true;
tileImageryUpdatedEvent.raiseEvent();
}
};
GlobeSurfaceTileProvider.prototype._onLayerRemoved = function(layer, index) {
// destroy TileImagerys for this layer for all previously loaded tiles
this._quadtree.forEachLoadedTile(function(tile) {
var tileImageryCollection = tile.data.imagery;
var startIndex = -1;
var numDestroyed = 0;
for (var i = 0, len = tileImageryCollection.length; i < len; ++i) {
var tileImagery = tileImageryCollection[i];
var imagery = tileImagery.loadingImagery;
if (!defined(imagery)) {
imagery = tileImagery.readyImagery;
}
if (imagery.imageryLayer === layer) {
if (startIndex === -1) {
startIndex = i;
}
tileImagery.freeResources();
++numDestroyed;
} else if (startIndex !== -1) {
// iterated past the section of TileImagerys belonging to this layer, no need to continue.
break;
}
}
if (startIndex !== -1) {
tileImageryCollection.splice(startIndex, numDestroyed);
}
});
if (defined(layer.imageryProvider)) {
layer.imageryProvider._reload = undefined;
}
this._imageryLayersUpdatedEvent.raiseEvent();
};
GlobeSurfaceTileProvider.prototype._onLayerMoved = function(layer, newIndex, oldIndex) {
this._layerOrderChanged = true;
this._imageryLayersUpdatedEvent.raiseEvent();
};
GlobeSurfaceTileProvider.prototype._onLayerShownOrHidden = function(layer, index, show) {
if (show) {
this._onLayerAdded(layer, index);
} else {
this._onLayerRemoved(layer, index);
}
};
var scratchClippingPlaneMatrix = new Matrix4();
function createTileUniformMap(frameState, globeSurfaceTileProvider) {
var uniformMap = {
u_initialColor : function() {
return this.properties.initialColor;
},
u_fillHighlightColor : function() {
return this.properties.fillHighlightColor;
},
u_zoomedOutOceanSpecularIntensity : function() {
return this.properties.zoomedOutOceanSpecularIntensity;
},
u_oceanNormalMap : function() {
return this.properties.oceanNormalMap;
},
u_lightingFadeDistance : function() {
return this.properties.lightingFadeDistance;
},
u_nightFadeDistance : function() {
return this.properties.nightFadeDistance;
},
u_center3D : function() {
return this.properties.center3D;
},
u_tileRectangle : function() {
return this.properties.tileRectangle;
},
u_modifiedModelView : function() {
var viewMatrix = frameState.context.uniformState.view;
var centerEye = Matrix4.multiplyByPoint(viewMatrix, this.properties.rtc, centerEyeScratch);
Matrix4.setTranslation(viewMatrix, centerEye, modifiedModelViewScratch);
return modifiedModelViewScratch;
},
u_modifiedModelViewProjection : function() {
var viewMatrix = frameState.context.uniformState.view;
var projectionMatrix = frameState.context.uniformState.projection;
var centerEye = Matrix4.multiplyByPoint(viewMatrix, this.properties.rtc, centerEyeScratch);
Matrix4.setTranslation(viewMatrix, centerEye, modifiedModelViewProjectionScratch);
Matrix4.multiply(projectionMatrix, modifiedModelViewProjectionScratch, modifiedModelViewProjectionScratch);
return modifiedModelViewProjectionScratch;
},
u_dayTextures : function() {
return this.properties.dayTextures;
},
u_dayTextureTranslationAndScale : function() {
return this.properties.dayTextureTranslationAndScale;
},
u_dayTextureTexCoordsRectangle : function() {
return this.properties.dayTextureTexCoordsRectangle;
},
u_dayTextureUseWebMercatorT : function() {
return this.properties.dayTextureUseWebMercatorT;
},
u_dayTextureAlpha : function() {
return this.properties.dayTextureAlpha;
},
u_dayTextureBrightness : function() {
return this.properties.dayTextureBrightness;
},
u_dayTextureContrast : function() {
return this.properties.dayTextureContrast;
},
u_dayTextureHue : function() {
return this.properties.dayTextureHue;
},
u_dayTextureSaturation : function() {
return this.properties.dayTextureSaturation;
},
u_dayTextureOneOverGamma : function() {
return this.properties.dayTextureOneOverGamma;
},
u_dayIntensity : function() {
return this.properties.dayIntensity;
},
u_southAndNorthLatitude : function() {
return this.properties.southAndNorthLatitude;
},
u_southMercatorYAndOneOverHeight : function() {
return this.properties.southMercatorYAndOneOverHeight;
},
u_waterMask : function() {
return this.properties.waterMask;
},
u_waterMaskTranslationAndScale : function() {
return this.properties.waterMaskTranslationAndScale;
},
u_minMaxHeight : function() {
return this.properties.minMaxHeight;
},
u_scaleAndBias : function() {
return this.properties.scaleAndBias;
},
u_dayTextureSplit : function() {
return this.properties.dayTextureSplit;
},
u_dayTextureCutoutRectangles : function() {
return this.properties.dayTextureCutoutRectangles;
},
u_clippingPlanes : function() {
var clippingPlanes = globeSurfaceTileProvider._clippingPlanes;
if (defined(clippingPlanes) && defined(clippingPlanes.texture)) {
// Check in case clippingPlanes hasn't been updated yet.
return clippingPlanes.texture;
}
return frameState.context.defaultTexture;
},
u_cartographicLimitRectangle : function() {
return this.properties.localizedCartographicLimitRectangle;
},
u_clippingPlanesMatrix : function() {
var clippingPlanes = globeSurfaceTileProvider._clippingPlanes;
return defined(clippingPlanes) ? Matrix4.multiply(frameState.context.uniformState.view, clippingPlanes.modelMatrix, scratchClippingPlaneMatrix) : Matrix4.IDENTITY;
},
u_clippingPlanesEdgeStyle : function() {
var style = this.properties.clippingPlanesEdgeColor;
style.alpha = this.properties.clippingPlanesEdgeWidth;
return style;
},
u_minimumBrightness : function() {
return frameState.fog.minimumBrightness;
},
u_hsbShift : function() {
return this.properties.hsbShift;
},
u_colorsToAlpha : function() {
return this.properties.colorsToAlpha;
},
// make a separate object so that changes to the properties are seen on
// derived commands that combine another uniform map with this one.
properties : {
initialColor : new Cartesian4(0.0, 0.0, 0.5, 1.0),
fillHighlightColor : new Color(0.0, 0.0, 0.0, 0.0),
zoomedOutOceanSpecularIntensity : 0.5,
oceanNormalMap : undefined,
lightingFadeDistance : new Cartesian2(6500000.0, 9000000.0),
nightFadeDistance : new Cartesian2(10000000.0, 40000000.0),
hsbShift : new Cartesian3(),
center3D : undefined,
rtc : new Cartesian3(),
modifiedModelView : new Matrix4(),
tileRectangle : new Cartesian4(),
dayTextures : [],
dayTextureTranslationAndScale : [],
dayTextureTexCoordsRectangle : [],
dayTextureUseWebMercatorT : [],
dayTextureAlpha : [],
dayTextureBrightness : [],
dayTextureContrast : [],
dayTextureHue : [],
dayTextureSaturation : [],
dayTextureOneOverGamma : [],
dayTextureSplit : [],
dayTextureCutoutRectangles : [],
dayIntensity : 0.0,
colorsToAlpha : [],
southAndNorthLatitude : new Cartesian2(),
southMercatorYAndOneOverHeight : new Cartesian2(),
waterMask : undefined,
waterMaskTranslationAndScale : new Cartesian4(),
minMaxHeight : new Cartesian2(),
scaleAndBias : new Matrix4(),
clippingPlanesEdgeColor : Color.clone(Color.WHITE),
clippingPlanesEdgeWidth : 0.0,
localizedCartographicLimitRectangle : new Cartesian4()
}
};
return uniformMap;
}
function createWireframeVertexArrayIfNecessary(context, provider, tile) {
var surfaceTile = tile.data;
var mesh;
var vertexArray;
if (defined(surfaceTile.vertexArray)) {
mesh = surfaceTile.mesh;
vertexArray = surfaceTile.vertexArray;
} else if (defined(surfaceTile.fill) && defined(surfaceTile.fill.vertexArray)) {
mesh = surfaceTile.fill.mesh;
vertexArray = surfaceTile.fill.vertexArray;
}
if (!defined(mesh) || !defined(vertexArray)) {
return;
}
if (defined(surfaceTile.wireframeVertexArray)) {
if (surfaceTile.wireframeVertexArray.mesh === mesh) {
return;
}
surfaceTile.wireframeVertexArray.destroy();
surfaceTile.wireframeVertexArray = undefined;
}
surfaceTile.wireframeVertexArray = createWireframeVertexArray(context, vertexArray, mesh);
surfaceTile.wireframeVertexArray.mesh = mesh;
}
/**
* Creates a vertex array for wireframe rendering of a terrain tile.
*
* @private
*
* @param {Context} context The context in which to create the vertex array.
* @param {VertexArray} vertexArray The existing, non-wireframe vertex array. The new vertex array
* will share vertex buffers with this existing one.
* @param {TerrainMesh} terrainMesh The terrain mesh containing non-wireframe indices.
* @returns {VertexArray} The vertex array for wireframe rendering.
*/
function createWireframeVertexArray(context, vertexArray, terrainMesh) {
var indices = terrainMesh.indices;
var geometry = {
indices : indices,
primitiveType : PrimitiveType.TRIANGLES
};
GeometryPipeline.toWireframe(geometry);
var wireframeIndices = geometry.indices;
var wireframeIndexBuffer = Buffer.createIndexBuffer({
context : context,
typedArray : wireframeIndices,
usage : BufferUsage.STATIC_DRAW,
indexDatatype : IndexDatatype.fromSizeInBytes(wireframeIndices.BYTES_PER_ELEMENT)
});
return new VertexArray({
context : context,
attributes : vertexArray._attributes,
indexBuffer : wireframeIndexBuffer
});
}
var getDebugOrientedBoundingBox;
var getDebugBoundingSphere;
var debugDestroyPrimitive;
(function() {
var instanceOBB = new GeometryInstance({
geometry : BoxOutlineGeometry.fromDimensions({dimensions : new Cartesian3(2.0, 2.0, 2.0)})
});
var instanceSphere = new GeometryInstance({
geometry : new SphereOutlineGeometry({radius : 1.0})
});
var modelMatrix = new Matrix4();
var previousVolume;
var primitive;
function createDebugPrimitive(instance) {
return new Primitive({
geometryInstances : instance,
appearance : new PerInstanceColorAppearance({
translucent : false,
flat : true
}),
asynchronous : false
});
}
getDebugOrientedBoundingBox = function(obb, color) {
if (obb === previousVolume) {
return primitive;
}
debugDestroyPrimitive();
previousVolume = obb;
modelMatrix = Matrix4.fromRotationTranslation(obb.halfAxes, obb.center, modelMatrix);
instanceOBB.modelMatrix = modelMatrix;
instanceOBB.attributes.color = ColorGeometryInstanceAttribute.fromColor(color);
primitive = createDebugPrimitive(instanceOBB);
return primitive;
};
getDebugBoundingSphere = function(sphere, color) {
if (sphere === previousVolume) {
return primitive;
}
debugDestroyPrimitive();
previousVolume = sphere;
modelMatrix = Matrix4.fromTranslation(sphere.center, modelMatrix);
modelMatrix = Matrix4.multiplyByUniformScale(modelMatrix, sphere.radius, modelMatrix);
instanceSphere.modelMatrix = modelMatrix;
instanceSphere.attributes.color = ColorGeometryInstanceAttribute.fromColor(color);
primitive = createDebugPrimitive(instanceSphere);
return primitive;
};
debugDestroyPrimitive = function() {
if (defined(primitive)) {
primitive.destroy();
primitive = undefined;
previousVolume = undefined;
}
};
})();
var otherPassesInitialColor = new Cartesian4(0.0, 0.0, 0.0, 0.0);
var surfaceShaderSetOptionsScratch = {
frameState : undefined,
surfaceTile : undefined,
numberOfDayTextures : undefined,
applyBrightness : undefined,
applyContrast : undefined,
applyHue : undefined,
applySaturation : undefined,
applyGamma : undefined,
applyAlpha : undefined,
applySplit : undefined,
showReflectiveOcean : undefined,
showOceanWaves : undefined,
enableLighting : undefined,
showGroundAtmosphere : undefined,
perFragmentGroundAtmosphere : undefined,
hasVertexNormals : undefined,
useWebMercatorProjection : undefined,
enableFog : undefined,
enableClippingPlanes : undefined,
clippingPlanes : undefined,
clippedByBoundaries : undefined,
hasImageryLayerCutout : undefined,
colorCorrect : undefined,
colorToAlpha : undefined
};
function addDrawCommandsForTile(tileProvider, tile, frameState) {
var surfaceTile = tile.data;
if (!defined(surfaceTile.vertexArray)) {
if (surfaceTile.fill === undefined) {
// No fill was created for this tile, probably because this tile is not connected to
// any renderable tiles. So create a simple tile in the middle of the tile's possible
// height range.
surfaceTile.fill = new TerrainFillMesh(tile);
}
surfaceTile.fill.update(tileProvider, frameState);
}
var creditDisplay = frameState.creditDisplay;
var terrainData = surfaceTile.terrainData;
if (defined(terrainData) && defined(terrainData.credits)) {
var tileCredits = terrainData.credits;
for (var tileCreditIndex = 0,
tileCreditLength = tileCredits.length; tileCreditIndex < tileCreditLength; ++tileCreditIndex) {
creditDisplay.addCredit(tileCredits[tileCreditIndex]);
}
}
var maxTextures = ContextLimits.maximumTextureImageUnits;
var waterMaskTexture = surfaceTile.waterMaskTexture;
var waterMaskTranslationAndScale = surfaceTile.waterMaskTranslationAndScale;
if (!defined(waterMaskTexture) && defined(surfaceTile.fill)) {
waterMaskTexture = surfaceTile.fill.waterMaskTexture;
waterMaskTranslationAndScale = surfaceTile.fill.waterMaskTranslationAndScale;
}
var showReflectiveOcean = tileProvider.hasWaterMask && defined(waterMaskTexture);
var oceanNormalMap = tileProvider.oceanNormalMap;
var showOceanWaves = showReflectiveOcean && defined(oceanNormalMap);
var hasVertexNormals = tileProvider.terrainProvider.ready && tileProvider.terrainProvider.hasVertexNormals;
var enableFog = frameState.fog.enabled;
var showGroundAtmosphere = tileProvider.showGroundAtmosphere;
var castShadows = ShadowMode.castShadows(tileProvider.shadows);
var receiveShadows = ShadowMode.receiveShadows(tileProvider.shadows);
var hueShift = tileProvider.hueShift;
var saturationShift = tileProvider.saturationShift;
var brightnessShift = tileProvider.brightnessShift;
var colorCorrect = !(CesiumMath.equalsEpsilon(hueShift, 0.0, CesiumMath.EPSILON7) &&
CesiumMath.equalsEpsilon(saturationShift, 0.0, CesiumMath.EPSILON7) &&
CesiumMath.equalsEpsilon(brightnessShift, 0.0, CesiumMath.EPSILON7));
var perFragmentGroundAtmosphere = false;
if (showGroundAtmosphere) {
var mode = frameState.mode;
var camera = frameState.camera;
var cameraDistance;
if (mode === SceneMode.SCENE2D || mode === SceneMode.COLUMBUS_VIEW) {
cameraDistance = camera.positionCartographic.height;
} else {
cameraDistance = Cartesian3.magnitude(camera.positionWC);
}
var fadeOutDistance = tileProvider.nightFadeOutDistance;
if (mode !== SceneMode.SCENE3D) {
fadeOutDistance -= frameState.mapProjection.ellipsoid.maximumRadius;
}
perFragmentGroundAtmosphere = cameraDistance > fadeOutDistance;
}
if (showReflectiveOcean) {
--maxTextures;
}
if (showOceanWaves) {
--maxTextures;
}
if (defined(frameState.shadowState) && frameState.shadowState.shadowsEnabled) {
--maxTextures;
}
if (defined(tileProvider.clippingPlanes) && tileProvider.clippingPlanes.enabled) {
--maxTextures;
}
var mesh = surfaceTile.renderedMesh;
var rtc = mesh.center;
var encoding = mesh.encoding;
// Not used in 3D.
var tileRectangle = tileRectangleScratch;
// Only used for Mercator projections.
var southLatitude = 0.0;
var northLatitude = 0.0;
var southMercatorY = 0.0;
var oneOverMercatorHeight = 0.0;
var useWebMercatorProjection = false;
if (frameState.mode !== SceneMode.SCENE3D) {
var projection = frameState.mapProjection;
var southwest = projection.project(Rectangle.southwest(tile.rectangle), southwestScratch);
var northeast = projection.project(Rectangle.northeast(tile.rectangle), northeastScratch);
tileRectangle.x = southwest.x;
tileRectangle.y = southwest.y;
tileRectangle.z = northeast.x;
tileRectangle.w = northeast.y;
// In 2D and Columbus View, use the center of the tile for RTC rendering.
if (frameState.mode !== SceneMode.MORPHING) {
rtc = rtcScratch;
rtc.x = 0.0;
rtc.y = (tileRectangle.z + tileRectangle.x) * 0.5;
rtc.z = (tileRectangle.w + tileRectangle.y) * 0.5;
tileRectangle.x -= rtc.y;
tileRectangle.y -= rtc.z;
tileRectangle.z -= rtc.y;
tileRectangle.w -= rtc.z;
}
if (frameState.mode === SceneMode.SCENE2D && encoding.quantization === TerrainQuantization.BITS12) {
// In 2D, the texture coordinates of the tile are interpolated over the rectangle to get the position in the vertex shader.
// When the texture coordinates are quantized, error is introduced. This can be seen through the 1px wide cracking
// between the quantized tiles in 2D. To compensate for the error, move the expand the rectangle in each direction by
// half the error amount.
var epsilon = (1.0 / (Math.pow(2.0, 12.0) - 1.0)) * 0.5;
var widthEpsilon = (tileRectangle.z - tileRectangle.x) * epsilon;
var heightEpsilon = (tileRectangle.w - tileRectangle.y) * epsilon;
tileRectangle.x -= widthEpsilon;
tileRectangle.y -= heightEpsilon;
tileRectangle.z += widthEpsilon;
tileRectangle.w += heightEpsilon;
}
if (projection instanceof WebMercatorProjection) {
southLatitude = tile.rectangle.south;
northLatitude = tile.rectangle.north;
southMercatorY = WebMercatorProjection.geodeticLatitudeToMercatorAngle(southLatitude);
oneOverMercatorHeight = 1.0 / (WebMercatorProjection.geodeticLatitudeToMercatorAngle(northLatitude) - southMercatorY);
useWebMercatorProjection = true;
}
}
var surfaceShaderSetOptions = surfaceShaderSetOptionsScratch;
surfaceShaderSetOptions.frameState = frameState;
surfaceShaderSetOptions.surfaceTile = surfaceTile;
surfaceShaderSetOptions.showReflectiveOcean = showReflectiveOcean;
surfaceShaderSetOptions.showOceanWaves = showOceanWaves;
surfaceShaderSetOptions.enableLighting = tileProvider.enableLighting;
surfaceShaderSetOptions.showGroundAtmosphere = showGroundAtmosphere;
surfaceShaderSetOptions.perFragmentGroundAtmosphere = perFragmentGroundAtmosphere;
surfaceShaderSetOptions.hasVertexNormals = hasVertexNormals;
surfaceShaderSetOptions.useWebMercatorProjection = useWebMercatorProjection;
surfaceShaderSetOptions.clippedByBoundaries = surfaceTile.clippedByBoundaries;
var tileImageryCollection = surfaceTile.imagery;
var imageryIndex = 0;
var imageryLen = tileImageryCollection.length;
var firstPassRenderState = tileProvider._renderState;
var otherPassesRenderState = tileProvider._blendRenderState;
var renderState = firstPassRenderState;
var initialColor = tileProvider._firstPassInitialColor;
var context = frameState.context;
if (!defined(tileProvider._debug.boundingSphereTile)) {
debugDestroyPrimitive();
}
do {
var numberOfDayTextures = 0;
var command;
var uniformMap;
if (tileProvider._drawCommands.length <= tileProvider._usedDrawCommands) {
command = new DrawCommand();
command.owner = tile;
command.cull = false;
command.boundingVolume = new BoundingSphere();
command.orientedBoundingBox = undefined;
uniformMap = createTileUniformMap(frameState, tileProvider);
tileProvider._drawCommands.push(command);
tileProvider._uniformMaps.push(uniformMap);
} else {
command = tileProvider._drawCommands[tileProvider._usedDrawCommands];
uniformMap = tileProvider._uniformMaps[tileProvider._usedDrawCommands];
}
command.owner = tile;
++tileProvider._usedDrawCommands;
if (tile === tileProvider._debug.boundingSphereTile) {
var obb = surfaceTile.orientedBoundingBox;
// If a debug primitive already exists for this tile, it will not be
// re-created, to avoid allocation every frame. If it were possible
// to have more than one selected tile, this would have to change.
if (defined(obb)) {
getDebugOrientedBoundingBox(obb, Color.RED).update(frameState);
} else if (defined(mesh) && defined(mesh.boundingSphere3D)) {
getDebugBoundingSphere(mesh.boundingSphere3D, Color.RED).update(frameState);
}
}
var uniformMapProperties = uniformMap.properties;
Cartesian4.clone(initialColor, uniformMapProperties.initialColor);
uniformMapProperties.oceanNormalMap = oceanNormalMap;
uniformMapProperties.lightingFadeDistance.x = tileProvider.lightingFadeOutDistance;
uniformMapProperties.lightingFadeDistance.y = tileProvider.lightingFadeInDistance;
uniformMapProperties.nightFadeDistance.x = tileProvider.nightFadeOutDistance;
uniformMapProperties.nightFadeDistance.y = tileProvider.nightFadeInDistance;
uniformMapProperties.zoomedOutOceanSpecularIntensity = tileProvider.zoomedOutOceanSpecularIntensity;
var highlightFillTile = !defined(surfaceTile.vertexArray) && defined(tileProvider.fillHighlightColor) && tileProvider.fillHighlightColor.alpha > 0.0;
if (highlightFillTile) {
Color.clone(tileProvider.fillHighlightColor, uniformMapProperties.fillHighlightColor);
}
uniformMapProperties.center3D = mesh.center;
Cartesian3.clone(rtc, uniformMapProperties.rtc);
Cartesian4.clone(tileRectangle, uniformMapProperties.tileRectangle);
uniformMapProperties.southAndNorthLatitude.x = southLatitude;
uniformMapProperties.southAndNorthLatitude.y = northLatitude;
uniformMapProperties.southMercatorYAndOneOverHeight.x = southMercatorY;
uniformMapProperties.southMercatorYAndOneOverHeight.y = oneOverMercatorHeight;
// Convert tile limiter rectangle from cartographic to texture space using the tileRectangle.
var localizedCartographicLimitRectangle = localizedCartographicLimitRectangleScratch;
var cartographicLimitRectangle = clipRectangleAntimeridian(tile.rectangle, tileProvider.cartographicLimitRectangle);
Cartesian3.fromElements(hueShift, saturationShift, brightnessShift, uniformMapProperties.hsbShift);
var cartographicTileRectangle = tile.rectangle;
var inverseTileWidth = 1.0 / cartographicTileRectangle.width;
var inverseTileHeight = 1.0 / cartographicTileRectangle.height;
localizedCartographicLimitRectangle.x = (cartographicLimitRectangle.west - cartographicTileRectangle.west) * inverseTileWidth;
localizedCartographicLimitRectangle.y = (cartographicLimitRectangle.south - cartographicTileRectangle.south) * inverseTileHeight;
localizedCartographicLimitRectangle.z = (cartographicLimitRectangle.east - cartographicTileRectangle.west) * inverseTileWidth;
localizedCartographicLimitRectangle.w = (cartographicLimitRectangle.north - cartographicTileRectangle.south) * inverseTileHeight;
Cartesian4.clone(localizedCartographicLimitRectangle, uniformMapProperties.localizedCartographicLimitRectangle);
// For performance, use fog in the shader only when the tile is in fog.
var applyFog = enableFog && CesiumMath.fog(tile._distance, frameState.fog.density) > CesiumMath.EPSILON3;
colorCorrect = colorCorrect && (applyFog || showGroundAtmosphere);
var applyBrightness = false;
var applyContrast = false;
var applyHue = false;
var applySaturation = false;
var applyGamma = false;
var applyAlpha = false;
var applySplit = false;
var applyCutout = false;
var applyColorToAlpha = false;
while (numberOfDayTextures < maxTextures && imageryIndex < imageryLen) {
var tileImagery = tileImageryCollection[imageryIndex];
var imagery = tileImagery.readyImagery;
++imageryIndex;
if (!defined(imagery) || imagery.imageryLayer.alpha === 0.0) {
continue;
}
var texture = tileImagery.useWebMercatorT ? imagery.textureWebMercator : imagery.texture;
//>>includeStart('debug', pragmas.debug);
if (!defined(texture)) {
// Our "ready" texture isn't actually ready. This should never happen.
//
// Side note: It IS possible for it to not be in the READY ImageryState, though.
// This can happen when a single imagery tile is shared by two terrain tiles (common)
// and one of them (A) needs a geographic version of the tile because it is near the poles,
// and the other (B) does not. B can and will transition the imagery tile to the READY state
// without reprojecting to geographic. Then, later, A will deem that same tile not-ready-yet
// because it only has the Web Mercator texture, and flip it back to the TRANSITIONING state.
// The imagery tile won't be in the READY state anymore, but it's still READY enough for B's
// purposes.
throw new DeveloperError('readyImagery is not actually ready!');
}
//>>includeEnd('debug');
var imageryLayer = imagery.imageryLayer;
if (!defined(tileImagery.textureTranslationAndScale)) {
tileImagery.textureTranslationAndScale = imageryLayer._calculateTextureTranslationAndScale(tile, tileImagery);
}
uniformMapProperties.dayTextures[numberOfDayTextures] = texture;
uniformMapProperties.dayTextureTranslationAndScale[numberOfDayTextures] = tileImagery.textureTranslationAndScale;
uniformMapProperties.dayTextureTexCoordsRectangle[numberOfDayTextures] = tileImagery.textureCoordinateRectangle;
uniformMapProperties.dayTextureUseWebMercatorT[numberOfDayTextures] = tileImagery.useWebMercatorT;
uniformMapProperties.dayTextureAlpha[numberOfDayTextures] = imageryLayer.alpha;
applyAlpha = applyAlpha || uniformMapProperties.dayTextureAlpha[numberOfDayTextures] !== 1.0;
uniformMapProperties.dayTextureBrightness[numberOfDayTextures] = imageryLayer.brightness;
applyBrightness = applyBrightness || uniformMapProperties.dayTextureBrightness[numberOfDayTextures] !== ImageryLayer.DEFAULT_BRIGHTNESS;
uniformMapProperties.dayTextureContrast[numberOfDayTextures] = imageryLayer.contrast;
applyContrast = applyContrast || uniformMapProperties.dayTextureContrast[numberOfDayTextures] !== ImageryLayer.DEFAULT_CONTRAST;
uniformMapProperties.dayTextureHue[numberOfDayTextures] = imageryLayer.hue;
applyHue = applyHue || uniformMapProperties.dayTextureHue[numberOfDayTextures] !== ImageryLayer.DEFAULT_HUE;
uniformMapProperties.dayTextureSaturation[numberOfDayTextures] = imageryLayer.saturation;
applySaturation = applySaturation || uniformMapProperties.dayTextureSaturation[numberOfDayTextures] !== ImageryLayer.DEFAULT_SATURATION;
uniformMapProperties.dayTextureOneOverGamma[numberOfDayTextures] = 1.0 / imageryLayer.gamma;
applyGamma = applyGamma || uniformMapProperties.dayTextureOneOverGamma[numberOfDayTextures] !== 1.0 / ImageryLayer.DEFAULT_GAMMA;
uniformMapProperties.dayTextureSplit[numberOfDayTextures] = imageryLayer.splitDirection;
applySplit = applySplit || uniformMapProperties.dayTextureSplit[numberOfDayTextures] !== 0.0;
// Update cutout rectangle
var dayTextureCutoutRectangle = uniformMapProperties.dayTextureCutoutRectangles[numberOfDayTextures];
if (!defined(dayTextureCutoutRectangle)) {
dayTextureCutoutRectangle = uniformMapProperties.dayTextureCutoutRectangles[numberOfDayTextures] = new Cartesian4();
}
Cartesian4.clone(Cartesian4.ZERO, dayTextureCutoutRectangle);
if (defined(imageryLayer.cutoutRectangle)) {
var cutoutRectangle = clipRectangleAntimeridian(cartographicTileRectangle, imageryLayer.cutoutRectangle);
var intersection = Rectangle.simpleIntersection(cutoutRectangle, cartographicTileRectangle, rectangleIntersectionScratch);
applyCutout = defined(intersection) || applyCutout;
dayTextureCutoutRectangle.x = (cutoutRectangle.west - cartographicTileRectangle.west) * inverseTileWidth;
dayTextureCutoutRectangle.y = (cutoutRectangle.south - cartographicTileRectangle.south) * inverseTileHeight;
dayTextureCutoutRectangle.z = (cutoutRectangle.east - cartographicTileRectangle.west) * inverseTileWidth;
dayTextureCutoutRectangle.w = (cutoutRectangle.north - cartographicTileRectangle.south) * inverseTileHeight;
}
// Update color to alpha
var colorToAlpha = uniformMapProperties.colorsToAlpha[numberOfDayTextures];
if (!defined(colorToAlpha)) {
colorToAlpha = uniformMapProperties.colorsToAlpha[numberOfDayTextures] = new Cartesian4();
}
var hasColorToAlpha = defined(imageryLayer.colorToAlpha) && imageryLayer.colorToAlphaThreshold > 0.0;
applyColorToAlpha = applyColorToAlpha || hasColorToAlpha;
if (hasColorToAlpha) {
var color = imageryLayer.colorToAlpha;
colorToAlpha.x = color.red;
colorToAlpha.y = color.green;
colorToAlpha.z = color.blue;
colorToAlpha.w = imageryLayer.colorToAlphaThreshold;
} else {
colorToAlpha.w = -1.0;
}
if (defined(imagery.credits)) {
var credits = imagery.credits;
for (var creditIndex = 0, creditLength = credits.length; creditIndex < creditLength; ++creditIndex) {
creditDisplay.addCredit(credits[creditIndex]);
}
}
++numberOfDayTextures;
}
// trim texture array to the used length so we don't end up using old textures
// which might get destroyed eventually
uniformMapProperties.dayTextures.length = numberOfDayTextures;
uniformMapProperties.waterMask = waterMaskTexture;
Cartesian4.clone(waterMaskTranslationAndScale, uniformMapProperties.waterMaskTranslationAndScale);
uniformMapProperties.minMaxHeight.x = encoding.minimumHeight;
uniformMapProperties.minMaxHeight.y = encoding.maximumHeight;
Matrix4.clone(encoding.matrix, uniformMapProperties.scaleAndBias);
// update clipping planes
var clippingPlanes = tileProvider._clippingPlanes;
var clippingPlanesEnabled = defined(clippingPlanes) && clippingPlanes.enabled && tile.isClipped;
if (clippingPlanesEnabled) {
uniformMapProperties.clippingPlanesEdgeColor = Color.clone(clippingPlanes.edgeColor, uniformMapProperties.clippingPlanesEdgeColor);
uniformMapProperties.clippingPlanesEdgeWidth = clippingPlanes.edgeWidth;
}
if (defined(tileProvider.uniformMap)) {
uniformMap = combine(uniformMap, tileProvider.uniformMap);
}
surfaceShaderSetOptions.numberOfDayTextures = numberOfDayTextures;
surfaceShaderSetOptions.applyBrightness = applyBrightness;
surfaceShaderSetOptions.applyContrast = applyContrast;
surfaceShaderSetOptions.applyHue = applyHue;
surfaceShaderSetOptions.applySaturation = applySaturation;
surfaceShaderSetOptions.applyGamma = applyGamma;
surfaceShaderSetOptions.applyAlpha = applyAlpha;
surfaceShaderSetOptions.applySplit = applySplit;
surfaceShaderSetOptions.enableFog = applyFog;
surfaceShaderSetOptions.enableClippingPlanes = clippingPlanesEnabled;
surfaceShaderSetOptions.clippingPlanes = clippingPlanes;
surfaceShaderSetOptions.hasImageryLayerCutout = applyCutout;
surfaceShaderSetOptions.colorCorrect = colorCorrect;
surfaceShaderSetOptions.highlightFillTile = highlightFillTile;
surfaceShaderSetOptions.colorToAlpha = applyColorToAlpha;
command.shaderProgram = tileProvider._surfaceShaderSet.getShaderProgram(surfaceShaderSetOptions);
command.castShadows = castShadows;
command.receiveShadows = receiveShadows;
command.renderState = renderState;
command.primitiveType = PrimitiveType.TRIANGLES;
command.vertexArray = surfaceTile.vertexArray || surfaceTile.fill.vertexArray;
command.uniformMap = uniformMap;
command.pass = Pass.GLOBE;
if (tileProvider._debug.wireframe) {
createWireframeVertexArrayIfNecessary(context, tileProvider, tile);
if (defined(surfaceTile.wireframeVertexArray)) {
command.vertexArray = surfaceTile.wireframeVertexArray;
command.primitiveType = PrimitiveType.LINES;
}
}
var boundingVolume = command.boundingVolume;
var orientedBoundingBox = command.orientedBoundingBox;
if (frameState.mode !== SceneMode.SCENE3D) {
var tileBoundingRegion = surfaceTile.tileBoundingRegion;
BoundingSphere.fromRectangleWithHeights2D(tile.rectangle, frameState.mapProjection, tileBoundingRegion.minimumHeight, tileBoundingRegion.maximumHeight, boundingVolume);
Cartesian3.fromElements(boundingVolume.center.z, boundingVolume.center.x, boundingVolume.center.y, boundingVolume.center);
if (frameState.mode === SceneMode.MORPHING) {
boundingVolume = BoundingSphere.union(mesh.boundingSphere3D, boundingVolume, boundingVolume);
}
} else {
command.boundingVolume = BoundingSphere.clone(mesh.boundingSphere3D, boundingVolume);
command.orientedBoundingBox = OrientedBoundingBox.clone(surfaceTile.orientedBoundingBox, orientedBoundingBox);
}
command.dirty = true;
frameState.commandList.push(command);
renderState = otherPassesRenderState;
initialColor = otherPassesInitialColor;
} while (imageryIndex < imageryLen);
}
export default GlobeSurfaceTileProvider;