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/main/specification/TileFormats/PointCloud|Point Cloud}
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* tile in a {@link https://github.com/CesiumGS/3d-tiles/tree/main/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(
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tileset,
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tile,
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resource,
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arrayBuffer,
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byteOffset
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) {
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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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this.featurePropertiesDirty = false;
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this._groupMetadata = undefined;
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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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groupMetadata: {
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get: function () {
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return this._groupMetadata;
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},
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set: function (value) {
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this._groupMetadata = value;
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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(
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false,
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"a_batchId",
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undefined
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)(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(
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false,
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undefined,
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false
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)(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(
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content,
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batchLength,
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batchTableJson,
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batchTableBinary
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);
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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)
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? content._batchTable.getPickId()
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: "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(
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sphereVolume / content.pointsLength
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);
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var geometricError = content._tile.geometricError;
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if (geometricError === 0) {
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if (
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defined(pointCloudShading) &&
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defined(pointCloudShading.baseResolution)
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) {
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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(
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"batchId is required and between zero and featuresLength - 1 (" +
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(featuresLength - 1) +
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")."
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);
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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 (
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enabled,
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color
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) {
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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(
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tileset.pointCloudShading,
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defaultShading
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);
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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 =
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mode === SceneMode.SCENE3D
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? tile._contentBoundingVolume.boundingSphere
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: tile._contentBoundingVolume2D.boundingSphere;
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} else {
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boundingSphere =
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mode === SceneMode.SCENE3D
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? tile._boundingVolume.boundingSphere
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: 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 =
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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 (
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defined(pointCloudShading) &&
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defined(pointCloudShading.maximumAttenuation)
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) {
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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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