import arraySlice from '../Core/arraySlice.js';
|
import Cartesian3 from '../Core/Cartesian3.js';
|
import Color from '../Core/Color.js';
|
import defaultValue from '../Core/defaultValue.js';
|
import defined from '../Core/defined.js';
|
import destroyObject from '../Core/destroyObject.js';
|
import Ellipsoid from '../Core/Ellipsoid.js';
|
import IndexDatatype from '../Core/IndexDatatype.js';
|
import OrientedBoundingBox from '../Core/OrientedBoundingBox.js';
|
import Rectangle from '../Core/Rectangle.js';
|
import TaskProcessor from '../Core/TaskProcessor.js';
|
import when from '../ThirdParty/when.js';
|
import ClassificationType from './ClassificationType.js';
|
import Vector3DTileBatch from './Vector3DTileBatch.js';
|
import Vector3DTilePrimitive from './Vector3DTilePrimitive.js';
|
|
/**
|
* Creates a batch of pre-triangulated polygons draped on terrain and/or 3D Tiles.
|
*
|
* @alias Vector3DTilePolygons
|
* @constructor
|
*
|
* @param {Object} options An object with following properties:
|
* @param {Float32Array|Uint16Array} options.positions The positions of the polygons. The positions must be contiguous
|
* so that the positions for polygon n are in [c, c + counts[n]] where c = sum{counts[0], counts[n - 1]} and they are the outer ring of
|
* the polygon in counter-clockwise order.
|
* @param {Uint32Array} options.counts The number of positions in the each polygon.
|
* @param {Uint32Array} options.indices The indices of the triangulated polygons. The indices must be contiguous so that
|
* the indices for polygon n are in [i, i + indexCounts[n]] where i = sum{indexCounts[0], indexCounts[n - 1]}.
|
* @param {Uint32Array} options.indexCounts The number of indices for each polygon.
|
* @param {Number} options.minimumHeight The minimum height of the terrain covered by the tile.
|
* @param {Number} options.maximumHeight The maximum height of the terrain covered by the tile.
|
* @param {Float32Array} [options.polygonMinimumHeights] An array containing the minimum heights for each polygon.
|
* @param {Float32Array} [options.polygonMaximumHeights] An array containing the maximum heights for each polygon.
|
* @param {Rectangle} options.rectangle The rectangle containing the tile.
|
* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid.
|
* @param {Cartesian3} [options.center=Cartesian3.ZERO] The RTC center.
|
* @param {Cesium3DTileBatchTable} options.batchTable The batch table for the tile containing the batched polygons.
|
* @param {Uint16Array} options.batchIds The batch ids for each polygon.
|
* @param {BoundingSphere} options.boundingVolume The bounding volume for the entire batch of polygons.
|
*
|
* @private
|
*/
|
function Vector3DTilePolygons(options) {
|
// All of the private properties will be released except _readyPromise
|
// and _primitive after the Vector3DTilePrimitive is created.
|
this._batchTable = options.batchTable;
|
|
this._batchIds = options.batchIds;
|
this._positions = options.positions;
|
this._counts = options.counts;
|
|
this._indices = options.indices;
|
this._indexCounts = options.indexCounts;
|
this._indexOffsets = undefined;
|
|
this._batchTableColors = undefined;
|
this._packedBuffer = undefined;
|
|
this._batchedPositions = undefined;
|
this._transferrableBatchIds = undefined;
|
this._vertexBatchIds = undefined;
|
|
this._ellipsoid = defaultValue(options.ellipsoid, Ellipsoid.WGS84);
|
this._minimumHeight = options.minimumHeight;
|
this._maximumHeight = options.maximumHeight;
|
this._polygonMinimumHeights = options.polygonMinimumHeights;
|
this._polygonMaximumHeights = options.polygonMaximumHeights;
|
this._center = defaultValue(options.center, Cartesian3.ZERO);
|
this._rectangle = options.rectangle;
|
|
this._center = undefined;
|
|
this._boundingVolume = options.boundingVolume;
|
this._boundingVolumes = undefined;
|
|
this._batchedIndices = undefined;
|
|
this._ready = false;
|
this._readyPromise = when.defer();
|
|
this._verticesPromise = undefined;
|
|
this._primitive = undefined;
|
|
/**
|
* Draws the wireframe of the classification meshes.
|
* @type {Boolean}
|
* @default false
|
*/
|
this.debugWireframe = false;
|
|
/**
|
* Forces a re-batch instead of waiting after a number of frames have been rendered. For testing only.
|
* @type {Boolean}
|
* @default false
|
*/
|
this.forceRebatch = false;
|
|
/**
|
* What this tile will classify.
|
* @type {ClassificationType}
|
* @default ClassificationType.BOTH
|
*/
|
this.classificationType = ClassificationType.BOTH;
|
}
|
|
Object.defineProperties(Vector3DTilePolygons.prototype, {
|
/**
|
* Gets the number of triangles.
|
*
|
* @memberof Vector3DTilePolygons.prototype
|
*
|
* @type {Number}
|
* @readonly
|
*/
|
trianglesLength : {
|
get : function() {
|
if (defined(this._primitive)) {
|
return this._primitive.trianglesLength;
|
}
|
return 0;
|
}
|
},
|
|
/**
|
* Gets the geometry memory in bytes.
|
*
|
* @memberof Vector3DTilePolygons.prototype
|
*
|
* @type {Number}
|
* @readonly
|
*/
|
geometryByteLength : {
|
get : function() {
|
if (defined(this._primitive)) {
|
return this._primitive.geometryByteLength;
|
}
|
return 0;
|
}
|
},
|
|
/**
|
* Gets a promise that resolves when the primitive is ready to render.
|
* @memberof Vector3DTilePolygons.prototype
|
* @type {Promise}
|
* @readonly
|
*/
|
readyPromise : {
|
get : function() {
|
return this._readyPromise.promise;
|
}
|
}
|
});
|
|
function packBuffer(polygons) {
|
var packedBuffer = new Float64Array(3 + Cartesian3.packedLength + Ellipsoid.packedLength + Rectangle.packedLength);
|
|
var offset = 0;
|
packedBuffer[offset++] = polygons._indices.BYTES_PER_ELEMENT;
|
|
packedBuffer[offset++] = polygons._minimumHeight;
|
packedBuffer[offset++] = polygons._maximumHeight;
|
|
Cartesian3.pack(polygons._center, packedBuffer, offset);
|
offset += Cartesian3.packedLength;
|
|
Ellipsoid.pack(polygons._ellipsoid, packedBuffer, offset);
|
offset += Ellipsoid.packedLength;
|
|
Rectangle.pack(polygons._rectangle, packedBuffer, offset);
|
|
return packedBuffer;
|
}
|
|
function unpackBuffer(polygons, packedBuffer) {
|
var offset = 1;
|
|
var numBVS = packedBuffer[offset++];
|
var bvs = polygons._boundingVolumes = new Array(numBVS);
|
|
for (var i = 0; i < numBVS; ++i) {
|
bvs[i] = OrientedBoundingBox.unpack(packedBuffer, offset);
|
offset += OrientedBoundingBox.packedLength;
|
}
|
|
var numBatchedIndices = packedBuffer[offset++];
|
var bis = polygons._batchedIndices = new Array(numBatchedIndices);
|
|
for (var j = 0; j < numBatchedIndices; ++j) {
|
var color = Color.unpack(packedBuffer, offset);
|
offset += Color.packedLength;
|
|
var indexOffset = packedBuffer[offset++];
|
var count = packedBuffer[offset++];
|
|
var length = packedBuffer[offset++];
|
var batchIds = new Array(length);
|
|
for (var k = 0; k < length; ++k) {
|
batchIds[k] = packedBuffer[offset++];
|
}
|
|
bis[j] = new Vector3DTileBatch({
|
color : color,
|
offset : indexOffset,
|
count : count,
|
batchIds : batchIds
|
});
|
}
|
}
|
|
var createVerticesTaskProcessor = new TaskProcessor('createVectorTilePolygons');
|
var scratchColor = new Color();
|
|
function createPrimitive(polygons) {
|
if (defined(polygons._primitive)) {
|
return;
|
}
|
|
if (!defined(polygons._verticesPromise)) {
|
var positions = polygons._positions;
|
var counts = polygons._counts;
|
var indexCounts = polygons._indexCounts;
|
var indices = polygons._indices;
|
|
var batchIds = polygons._transferrableBatchIds;
|
var batchTableColors = polygons._batchTableColors;
|
|
var packedBuffer = polygons._packedBuffer;
|
|
if (!defined(batchTableColors)) {
|
// Copy because they may be the views on the same buffer.
|
positions = polygons._positions = arraySlice(polygons._positions);
|
counts = polygons._counts = arraySlice(polygons._counts);
|
indexCounts = polygons._indexCounts= arraySlice(polygons._indexCounts);
|
indices = polygons._indices = arraySlice(polygons._indices);
|
|
polygons._center = polygons._ellipsoid.cartographicToCartesian(Rectangle.center(polygons._rectangle));
|
|
batchIds = polygons._transferrableBatchIds = new Uint32Array(polygons._batchIds);
|
batchTableColors = polygons._batchTableColors = new Uint32Array(batchIds.length);
|
var batchTable = polygons._batchTable;
|
|
var length = batchTableColors.length;
|
for (var i = 0; i < length; ++i) {
|
var color = batchTable.getColor(i, scratchColor);
|
batchTableColors[i] = color.toRgba();
|
}
|
|
packedBuffer = polygons._packedBuffer = packBuffer(polygons);
|
}
|
|
var transferrableObjects = [positions.buffer, counts.buffer, indexCounts.buffer, indices.buffer, batchIds.buffer, batchTableColors.buffer, packedBuffer.buffer];
|
var parameters = {
|
packedBuffer : packedBuffer.buffer,
|
positions : positions.buffer,
|
counts : counts.buffer,
|
indexCounts : indexCounts.buffer,
|
indices : indices.buffer,
|
batchIds : batchIds.buffer,
|
batchTableColors : batchTableColors.buffer
|
};
|
|
var minimumHeights = polygons._polygonMinimumHeights;
|
var maximumHeights = polygons._polygonMaximumHeights;
|
if (defined(minimumHeights) && defined(maximumHeights)) {
|
minimumHeights = arraySlice(minimumHeights);
|
maximumHeights = arraySlice(maximumHeights);
|
|
transferrableObjects.push(minimumHeights.buffer, maximumHeights.buffer);
|
parameters.minimumHeights = minimumHeights;
|
parameters.maximumHeights = maximumHeights;
|
}
|
|
var verticesPromise = polygons._verticesPromise = createVerticesTaskProcessor.scheduleTask(parameters, transferrableObjects);
|
if (!defined(verticesPromise)) {
|
// Postponed
|
return;
|
}
|
|
when(verticesPromise, function(result) {
|
polygons._positions = undefined;
|
polygons._counts = undefined;
|
polygons._polygonMinimumHeights = undefined;
|
polygons._polygonMaximumHeights = undefined;
|
|
var packedBuffer = new Float64Array(result.packedBuffer);
|
var indexDatatype = packedBuffer[0];
|
unpackBuffer(polygons, packedBuffer);
|
|
polygons._indices = IndexDatatype.getSizeInBytes(indexDatatype) === 2 ? new Uint16Array(result.indices) : new Uint32Array(result.indices);
|
polygons._indexOffsets = new Uint32Array(result.indexOffsets);
|
polygons._indexCounts = new Uint32Array(result.indexCounts);
|
|
// will be released
|
polygons._batchedPositions = new Float32Array(result.positions);
|
polygons._vertexBatchIds = new Uint16Array(result.batchIds);
|
|
polygons._ready = true;
|
});
|
}
|
|
if (polygons._ready && !defined(polygons._primitive)) {
|
polygons._primitive = new Vector3DTilePrimitive({
|
batchTable : polygons._batchTable,
|
positions : polygons._batchedPositions,
|
batchIds : polygons._batchIds,
|
vertexBatchIds : polygons._vertexBatchIds,
|
indices : polygons._indices,
|
indexOffsets : polygons._indexOffsets,
|
indexCounts : polygons._indexCounts,
|
batchedIndices : polygons._batchedIndices,
|
boundingVolume : polygons._boundingVolume,
|
boundingVolumes : polygons._boundingVolumes,
|
center : polygons._center
|
});
|
|
polygons._batchTable = undefined;
|
polygons._batchIds = undefined;
|
polygons._positions = undefined;
|
polygons._counts = undefined;
|
polygons._indices = undefined;
|
polygons._indexCounts = undefined;
|
polygons._indexOffsets = undefined;
|
polygons._batchTableColors = undefined;
|
polygons._packedBuffer = undefined;
|
polygons._batchedPositions = undefined;
|
polygons._transferrableBatchIds = undefined;
|
polygons._vertexBatchIds = undefined;
|
polygons._ellipsoid = undefined;
|
polygons._minimumHeight = undefined;
|
polygons._maximumHeight = undefined;
|
polygons._polygonMinimumHeights = undefined;
|
polygons._polygonMaximumHeights = undefined;
|
polygons._center = undefined;
|
polygons._rectangle = undefined;
|
polygons._boundingVolume = undefined;
|
polygons._boundingVolumes = undefined;
|
polygons._batchedIndices = undefined;
|
polygons._verticesPromise = undefined;
|
|
polygons._readyPromise.resolve();
|
}
|
}
|
|
/**
|
* Creates features for each polygon and places it at the batch id index of features.
|
*
|
* @param {Vector3DTileContent} content The vector tile content.
|
* @param {Cesium3DTileFeature[]} features An array of features where the polygon features will be placed.
|
*/
|
Vector3DTilePolygons.prototype.createFeatures = function(content, features) {
|
this._primitive.createFeatures(content, features);
|
};
|
|
/**
|
* Colors the entire tile when enabled is true. The resulting color will be (polygon batch table color * color).
|
*
|
* @param {Boolean} enabled Whether to enable debug coloring.
|
* @param {Color} color The debug color.
|
*/
|
Vector3DTilePolygons.prototype.applyDebugSettings = function(enabled, color) {
|
this._primitive.applyDebugSettings(enabled, color);
|
};
|
|
/**
|
* Apply a style to the content.
|
*
|
* @param {Cesium3DTileStyle} style The style.
|
* @param {Cesium3DTileFeature[]} features The array of features.
|
*/
|
Vector3DTilePolygons.prototype.applyStyle = function(style, features) {
|
this._primitive.applyStyle(style, features);
|
};
|
|
/**
|
* Call when updating the color of a polygon with batchId changes color. The polygons will need to be re-batched
|
* on the next update.
|
*
|
* @param {Number} batchId The batch id of the polygon whose color has changed.
|
* @param {Color} color The new polygon color.
|
*/
|
Vector3DTilePolygons.prototype.updateCommands = function(batchId, color) {
|
this._primitive.updateCommands(batchId, color);
|
};
|
|
/**
|
* Updates the batches and queues the commands for rendering.
|
*
|
* @param {FrameState} frameState The current frame state.
|
*/
|
Vector3DTilePolygons.prototype.update = function(frameState) {
|
createPrimitive(this);
|
|
if (!this._ready) {
|
return;
|
}
|
|
this._primitive.debugWireframe = this.debugWireframe;
|
this._primitive.forceRebatch = this.forceRebatch;
|
this._primitive.classificationType = this.classificationType;
|
this._primitive.update(frameState);
|
};
|
|
/**
|
* Returns true if this object was destroyed; otherwise, false.
|
* <p>
|
* If this object was destroyed, it should not be used; calling any function other than
|
* <code>isDestroyed</code> will result in a {@link DeveloperError} exception.
|
* </p>
|
*
|
* @returns {Boolean} <code>true</code> if this object was destroyed; otherwise, <code>false</code>.
|
*/
|
Vector3DTilePolygons.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.
|
* <p>
|
* Once an object is destroyed, it should not be used; calling any function other than
|
* <code>isDestroyed</code> will result in a {@link DeveloperError} exception. Therefore,
|
* assign the return value (<code>undefined</code>) to the object as done in the example.
|
* </p>
|
*
|
* @exception {DeveloperError} This object was destroyed, i.e., destroy() was called.
|
*/
|
Vector3DTilePolygons.prototype.destroy = function() {
|
this._primitive = this._primitive && this._primitive.destroy();
|
return destroyObject(this);
|
};
|
export default Vector3DTilePolygons;
|
