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- import Color from '../Core/Color.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 CesiumMath from '../Core/Math.js';
- import Pass from '../Renderer/Pass.js';
- import Cesium3DTileBatchTable from './Cesium3DTileBatchTable.js';
- import Cesium3DTileFeature from './Cesium3DTileFeature.js';
- import Cesium3DTileRefine from './Cesium3DTileRefine.js';
- import PointCloud from './PointCloud.js';
- import PointCloudShading from './PointCloudShading.js';
- import SceneMode from './SceneMode.js';
- /**
- * Represents the contents of a
- * {@link https://github.com/AnalyticalGraphicsInc/3d-tiles/tree/master/specification/TileFormats/PointCloud|Point Cloud}
- * tile in a {@link https://github.com/AnalyticalGraphicsInc/3d-tiles/tree/master/specification|3D Tiles} tileset.
- * <p>
- * Implements the {@link Cesium3DTileContent} interface.
- * </p>
- *
- * @alias PointCloud3DTileContent
- * @constructor
- *
- * @private
- */
- function PointCloud3DTileContent(tileset, tile, resource, arrayBuffer, byteOffset) {
- this._tileset = tileset;
- this._tile = tile;
- this._resource = resource;
- this._pickId = undefined; // Only defined when batchTable is undefined
- this._batchTable = undefined; // Used when feature table contains BATCH_ID semantic
- this._styleDirty = false;
- this._features = undefined;
- /**
- * @inheritdoc Cesium3DTileContent#featurePropertiesDirty
- */
- this.featurePropertiesDirty = false;
- this._pointCloud = new PointCloud({
- arrayBuffer : arrayBuffer,
- byteOffset : byteOffset,
- cull : false,
- opaquePass : Pass.CESIUM_3D_TILE,
- vertexShaderLoaded : getVertexShaderLoaded(this),
- fragmentShaderLoaded : getFragmentShaderLoaded(this),
- uniformMapLoaded : getUniformMapLoaded(this),
- batchTableLoaded : getBatchTableLoaded(this),
- pickIdLoaded : getPickIdLoaded(this)
- });
- }
- defineProperties(PointCloud3DTileContent.prototype, {
- featuresLength : {
- get : function() {
- if (defined(this._batchTable)) {
- return this._batchTable.featuresLength;
- }
- return 0;
- }
- },
- pointsLength : {
- get : function() {
- return this._pointCloud.pointsLength;
- }
- },
- trianglesLength : {
- get : function() {
- return 0;
- }
- },
- geometryByteLength : {
- get : function() {
- return this._pointCloud.geometryByteLength;
- }
- },
- texturesByteLength : {
- get : function() {
- return 0;
- }
- },
- batchTableByteLength : {
- get : function() {
- if (defined(this._batchTable)) {
- return this._batchTable.memorySizeInBytes;
- }
- return 0;
- }
- },
- innerContents : {
- get : function() {
- return undefined;
- }
- },
- readyPromise : {
- get : function() {
- return this._pointCloud.readyPromise;
- }
- },
- tileset : {
- get : function() {
- return this._tileset;
- }
- },
- tile : {
- get : function() {
- return this._tile;
- }
- },
- url : {
- get : function() {
- return this._resource.getUrlComponent(true);
- }
- },
- batchTable : {
- get : function() {
- return this._batchTable;
- }
- }
- });
- function getVertexShaderLoaded(content) {
- return function(vs) {
- if (defined(content._batchTable)) {
- return content._batchTable.getVertexShaderCallback(false, 'a_batchId', undefined)(vs);
- }
- return vs;
- };
- }
- function getFragmentShaderLoaded(content) {
- return function(fs) {
- if (defined(content._batchTable)) {
- return content._batchTable.getFragmentShaderCallback(false, undefined)(fs);
- }
- return 'uniform vec4 czm_pickColor;\n' + fs;
- };
- }
- function getUniformMapLoaded(content) {
- return function(uniformMap) {
- if (defined(content._batchTable)) {
- return content._batchTable.getUniformMapCallback()(uniformMap);
- }
- return combine(uniformMap, {
- czm_pickColor : function() {
- return content._pickId.color;
- }
- });
- };
- }
- function getBatchTableLoaded(content) {
- return function(batchLength, batchTableJson, batchTableBinary) {
- content._batchTable = new Cesium3DTileBatchTable(content, batchLength, batchTableJson, batchTableBinary);
- };
- }
- function getPickIdLoaded(content) {
- return function() {
- return defined(content._batchTable) ? content._batchTable.getPickId() : 'czm_pickColor';
- };
- }
- function getGeometricError(content) {
- var pointCloudShading = content._tileset.pointCloudShading;
- var sphereVolume = content._tile.contentBoundingVolume.boundingSphere.volume();
- var baseResolutionApproximation = CesiumMath.cbrt(sphereVolume / content.pointsLength);
- var geometricError = content._tile.geometricError;
- if (geometricError === 0) {
- if (defined(pointCloudShading) && defined(pointCloudShading.baseResolution)) {
- geometricError = pointCloudShading.baseResolution;
- } else {
- geometricError = baseResolutionApproximation;
- }
- }
- return geometricError;
- }
- function createFeatures(content) {
- var featuresLength = content.featuresLength;
- if (!defined(content._features) && (featuresLength > 0)) {
- var features = new Array(featuresLength);
- for (var i = 0; i < featuresLength; ++i) {
- features[i] = new Cesium3DTileFeature(content, i);
- }
- content._features = features;
- }
- }
- PointCloud3DTileContent.prototype.hasProperty = function(batchId, name) {
- if (defined(this._batchTable)) {
- return this._batchTable.hasProperty(batchId, name);
- }
- return false;
- };
- /**
- * Part of the {@link Cesium3DTileContent} interface.
- *
- * In this context a feature refers to a group of points that share the same BATCH_ID.
- * For example all the points that represent a door in a house point cloud would be a feature.
- *
- * Features are backed by a batch table and can be colored, shown/hidden, picked, etc like features
- * in b3dm and i3dm.
- *
- * When the BATCH_ID semantic is omitted and the point cloud stores per-point properties, they
- * are not accessible by getFeature. They are only used for dynamic styling.
- */
- PointCloud3DTileContent.prototype.getFeature = function(batchId) {
- if (!defined(this._batchTable)) {
- return undefined;
- }
- var featuresLength = this.featuresLength;
- //>>includeStart('debug', pragmas.debug);
- if (!defined(batchId) || (batchId < 0) || (batchId >= featuresLength)) {
- throw new DeveloperError('batchId is required and between zero and featuresLength - 1 (' + (featuresLength - 1) + ').');
- }
- //>>includeEnd('debug');
- createFeatures(this);
- return this._features[batchId];
- };
- PointCloud3DTileContent.prototype.applyDebugSettings = function(enabled, color) {
- this._pointCloud.color = enabled ? color : Color.WHITE;
- };
- PointCloud3DTileContent.prototype.applyStyle = function(style) {
- if (defined(this._batchTable)) {
- this._batchTable.applyStyle(style);
- } else {
- this._styleDirty = true;
- }
- };
- var defaultShading = new PointCloudShading();
- PointCloud3DTileContent.prototype.update = function(tileset, frameState) {
- var pointCloud = this._pointCloud;
- var pointCloudShading = defaultValue(tileset.pointCloudShading, defaultShading);
- var tile = this._tile;
- var batchTable = this._batchTable;
- var mode = frameState.mode;
- var clippingPlanes = tileset.clippingPlanes;
- if (!defined(this._pickId) && !defined(batchTable)) {
- this._pickId = frameState.context.createPickId({
- primitive : tileset,
- content : this
- });
- }
- if (defined(batchTable)) {
- batchTable.update(tileset, frameState);
- }
- var boundingSphere;
- if (defined(tile._contentBoundingVolume)) {
- boundingSphere = mode === SceneMode.SCENE3D ? tile._contentBoundingVolume.boundingSphere : tile._contentBoundingVolume2D.boundingSphere;
- } else {
- boundingSphere = mode === SceneMode.SCENE3D ? tile._boundingVolume.boundingSphere : tile._boundingVolume2D.boundingSphere;
- }
- var styleDirty = this._styleDirty;
- this._styleDirty = false;
- pointCloud.clippingPlanesOriginMatrix = tileset.clippingPlanesOriginMatrix;
- pointCloud.style = defined(batchTable) ? undefined : tileset.style;
- pointCloud.styleDirty = styleDirty;
- pointCloud.modelMatrix = tile.computedTransform;
- pointCloud.time = tileset.timeSinceLoad;
- pointCloud.shadows = tileset.shadows;
- pointCloud.boundingSphere = boundingSphere;
- pointCloud.clippingPlanes = clippingPlanes;
- pointCloud.isClipped = defined(clippingPlanes) && clippingPlanes.enabled && tile._isClipped;
- pointCloud.clippingPlanesDirty = tile.clippingPlanesDirty;
- pointCloud.attenuation = pointCloudShading.attenuation;
- pointCloud.backFaceCulling = pointCloudShading.backFaceCulling;
- pointCloud.normalShading = pointCloudShading.normalShading;
- pointCloud.geometricError = getGeometricError(this);
- pointCloud.geometricErrorScale = pointCloudShading.geometricErrorScale;
- if (defined(pointCloudShading) && defined(pointCloudShading.maximumAttenuation)) {
- pointCloud.maximumAttenuation = pointCloudShading.maximumAttenuation;
- } else if (tile.refine === Cesium3DTileRefine.ADD) {
- pointCloud.maximumAttenuation = 5.0;
- } else {
- pointCloud.maximumAttenuation = tileset.maximumScreenSpaceError;
- }
- pointCloud.update(frameState);
- };
- PointCloud3DTileContent.prototype.isDestroyed = function() {
- return false;
- };
- PointCloud3DTileContent.prototype.destroy = function() {
- this._pickId = this._pickId && this._pickId.destroy();
- this._pointCloud = this._pointCloud && this._pointCloud.destroy();
- this._batchTable = this._batchTable && this._batchTable.destroy();
- return destroyObject(this);
- };
- export default PointCloud3DTileContent;
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