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