cesiumDemo/Source/Workers/createVectorTileGeometries.js

/* This file is automatically rebuilt by the Cesium build process. */
define(['./defined-26bd4a03', './Check-da037458', './freezeObject-2d83f591', './defaultValue-f2e68450', './Math-fa6e45cb', './Cartesian2-2a723276', './defineProperties-6f7a50f2', './Transforms-65aba0a4', './RuntimeError-ad75c885', './WebGLConstants-497deb20', './ComponentDatatype-69643096', './GeometryAttribute-ed359d71', './when-ee12a2cb', './GeometryAttributes-eecc9f43', './IndexDatatype-3de60176', './createTaskProcessorWorker', './GeometryOffsetAttribute-cb30cd97', './VertexFormat-fbb91dc7', './BoxGeometry-652222c8', './CylinderGeometryLibrary-1a22ba0e', './CylinderGeometry-3515f379', './EllipsoidGeometry-592b342c', './Color-63c0bcb4'], function (defined, Check, freezeObject, defaultValue, _Math, Cartesian2, defineProperties, Transforms, RuntimeError, WebGLConstants, ComponentDatatype, GeometryAttribute, when, GeometryAttributes, IndexDatatype, createTaskProcessorWorker, GeometryOffsetAttribute, VertexFormat, BoxGeometry, CylinderGeometryLibrary, CylinderGeometry, EllipsoidGeometry, Color) { 'use strict';

    /**
         * Describes a renderable batch of geometry.
         *
         * @alias Vector3DTileBatch
         * @constructor
         *
         * @param {Object} options An object with the following properties:
         * @param {Number} options.offset The offset of the batch into the indices buffer.
         * @param {Number} options.count The number of indices in the batch.
         * @param {Color} options.color The color of the geometry in the batch.
         * @param {Number[]} options.batchIds An array where each element is the batch id of the geometry in the batch.
         *
         * @private
         */
        function Vector3DTileBatch(options) {
            /**
             * The offset of the batch into the indices buffer.
             * @type {Number}
             */
            this.offset = options.offset;
            /**
             * The number of indices in the batch.
             * @type {Number}
             */
            this.count = options.count;
            /**
             * The color of the geometry in the batch.
             * @type {Color}
             */
            this.color = options.color;
            /**
             * An array where each element is the batch id of the geometry in the batch.
             * @type {Number[]}
             */
            this.batchIds = options.batchIds;
        }

    var scratchCartesian = new Cartesian2.Cartesian3();

        var packedBoxLength = Transforms.Matrix4.packedLength + Cartesian2.Cartesian3.packedLength;
        var packedCylinderLength = Transforms.Matrix4.packedLength + 2;
        var packedEllipsoidLength = Transforms.Matrix4.packedLength + Cartesian2.Cartesian3.packedLength;
        var packedSphereLength = Cartesian2.Cartesian3.packedLength + 1;

        var scratchModelMatrixAndBV = {
            modelMatrix : new Transforms.Matrix4(),
            boundingVolume : new Transforms.BoundingSphere()
        };

        function boxModelMatrixAndBoundingVolume(boxes, index) {
            var boxIndex  = index * packedBoxLength;

            var dimensions = Cartesian2.Cartesian3.unpack(boxes, boxIndex, scratchCartesian);
            boxIndex += Cartesian2.Cartesian3.packedLength;

            var boxModelMatrix = Transforms.Matrix4.unpack(boxes, boxIndex, scratchModelMatrixAndBV.modelMatrix);
            Transforms.Matrix4.multiplyByScale(boxModelMatrix, dimensions, boxModelMatrix);

            var boundingVolume = scratchModelMatrixAndBV.boundingVolume;
            Cartesian2.Cartesian3.clone(Cartesian2.Cartesian3.ZERO, boundingVolume.center);
            boundingVolume.radius = Math.sqrt(3.0);

            return scratchModelMatrixAndBV;
        }

        function cylinderModelMatrixAndBoundingVolume(cylinders, index) {
            var cylinderIndex = index * packedCylinderLength;

            var cylinderRadius = cylinders[cylinderIndex++];
            var length = cylinders[cylinderIndex++];
            var scale = Cartesian2.Cartesian3.fromElements(cylinderRadius, cylinderRadius, length, scratchCartesian);

            var cylinderModelMatrix = Transforms.Matrix4.unpack(cylinders, cylinderIndex, scratchModelMatrixAndBV.modelMatrix);
            Transforms.Matrix4.multiplyByScale(cylinderModelMatrix, scale, cylinderModelMatrix);

            var boundingVolume = scratchModelMatrixAndBV.boundingVolume;
            Cartesian2.Cartesian3.clone(Cartesian2.Cartesian3.ZERO, boundingVolume.center);
            boundingVolume.radius = Math.sqrt(2.0);

            return scratchModelMatrixAndBV;
        }

        function ellipsoidModelMatrixAndBoundingVolume(ellipsoids, index) {
            var ellipsoidIndex = index * packedEllipsoidLength;

            var radii = Cartesian2.Cartesian3.unpack(ellipsoids, ellipsoidIndex, scratchCartesian);
            ellipsoidIndex += Cartesian2.Cartesian3.packedLength;

            var ellipsoidModelMatrix = Transforms.Matrix4.unpack(ellipsoids, ellipsoidIndex, scratchModelMatrixAndBV.modelMatrix);
            Transforms.Matrix4.multiplyByScale(ellipsoidModelMatrix, radii, ellipsoidModelMatrix);

            var boundingVolume = scratchModelMatrixAndBV.boundingVolume;
            Cartesian2.Cartesian3.clone(Cartesian2.Cartesian3.ZERO, boundingVolume.center);
            boundingVolume.radius = 1.0;

            return scratchModelMatrixAndBV;
        }

        function sphereModelMatrixAndBoundingVolume(spheres, index) {
            var sphereIndex = index * packedSphereLength;

            var sphereRadius = spheres[sphereIndex++];

            var sphereTranslation = Cartesian2.Cartesian3.unpack(spheres, sphereIndex, scratchCartesian);
            var sphereModelMatrix = Transforms.Matrix4.fromTranslation(sphereTranslation, scratchModelMatrixAndBV.modelMatrix);
            Transforms.Matrix4.multiplyByUniformScale(sphereModelMatrix, sphereRadius, sphereModelMatrix);

            var boundingVolume = scratchModelMatrixAndBV.boundingVolume;
            Cartesian2.Cartesian3.clone(Cartesian2.Cartesian3.ZERO, boundingVolume.center);
            boundingVolume.radius = 1.0;

            return scratchModelMatrixAndBV;
        }

        var scratchPosition = new Cartesian2.Cartesian3();

        function createPrimitive(options, primitive, primitiveBatchIds, geometry, getModelMatrixAndBoundingVolume) {
            if (!defined.defined(primitive)) {
                return;
            }

            var numberOfPrimitives = primitiveBatchIds.length;
            var geometryPositions = geometry.attributes.position.values;
            var geometryIndices = geometry.indices;

            var positions = options.positions;
            var vertexBatchIds = options.vertexBatchIds;
            var indices = options.indices;

            var batchIds = options.batchIds;
            var batchTableColors = options.batchTableColors;
            var batchedIndices = options.batchedIndices;
            var indexOffsets = options.indexOffsets;
            var indexCounts = options.indexCounts;
            var boundingVolumes = options.boundingVolumes;

            var modelMatrix = options.modelMatrix;
            var center = options.center;

            var positionOffset = options.positionOffset;
            var batchIdIndex = options.batchIdIndex;
            var indexOffset = options.indexOffset;
            var batchedIndicesOffset = options.batchedIndicesOffset;

            for (var i = 0; i < numberOfPrimitives; ++i) {
                var primitiveModelMatrixAndBV = getModelMatrixAndBoundingVolume(primitive, i);
                var primitiveModelMatrix = primitiveModelMatrixAndBV.modelMatrix;
                Transforms.Matrix4.multiply(modelMatrix, primitiveModelMatrix, primitiveModelMatrix);

                var batchId = primitiveBatchIds[i];

                var positionsLength = geometryPositions.length;
                for (var j = 0; j < positionsLength; j += 3) {
                    var position = Cartesian2.Cartesian3.unpack(geometryPositions, j, scratchPosition);
                    Transforms.Matrix4.multiplyByPoint(primitiveModelMatrix, position, position);
                    Cartesian2.Cartesian3.subtract(position, center, position);

                    Cartesian2.Cartesian3.pack(position, positions, positionOffset * 3 + j);
                    vertexBatchIds[batchIdIndex++] = batchId;
                }

                var indicesLength = geometryIndices.length;
                for (var k = 0; k < indicesLength; ++k) {
                    indices[indexOffset + k] = geometryIndices[k] + positionOffset;
                }

                var offset = i + batchedIndicesOffset;
                batchedIndices[offset] = new Vector3DTileBatch({
                    offset : indexOffset,
                    count : indicesLength,
                    color : Color.Color.fromRgba(batchTableColors[batchId]),
                    batchIds : [batchId]
                });
                batchIds[offset] = batchId;
                indexOffsets[offset] = indexOffset;
                indexCounts[offset] = indicesLength;
                boundingVolumes[offset] = Transforms.BoundingSphere.transform(primitiveModelMatrixAndBV.boundingVolume, primitiveModelMatrix);

                positionOffset += positionsLength / 3;
                indexOffset += indicesLength;
            }

            options.positionOffset = positionOffset;
            options.batchIdIndex = batchIdIndex;
            options.indexOffset = indexOffset;
            options.batchedIndicesOffset += numberOfPrimitives;
        }

        var scratchCenter = new Cartesian2.Cartesian3();
        var scratchMatrix4 = new Transforms.Matrix4();

        function unpackBuffer(buffer) {
            var packedBuffer = new Float64Array(buffer);

            var offset = 0;
            Cartesian2.Cartesian3.unpack(packedBuffer, offset, scratchCenter);
            offset += Cartesian2.Cartesian3.packedLength;

            Transforms.Matrix4.unpack(packedBuffer, offset, scratchMatrix4);
        }

        function packedBatchedIndicesLength(batchedIndices) {
            var length = batchedIndices.length;
            var count = 0;
            for (var i = 0; i < length; ++i) {
                count += Color.Color.packedLength + 3 + batchedIndices[i].batchIds.length;
            }
            return count;
        }

        function packBuffer(indicesBytesPerElement, batchedIndices, boundingVolumes) {
            var numBVs = boundingVolumes.length;
            var length = 1 + 1 + numBVs * Transforms.BoundingSphere.packedLength + 1 + packedBatchedIndicesLength(batchedIndices);

            var packedBuffer = new Float64Array(length);

            var offset = 0;
            packedBuffer[offset++] = indicesBytesPerElement;
            packedBuffer[offset++] = numBVs;

            for (var i = 0; i < numBVs; ++i) {
                Transforms.BoundingSphere.pack(boundingVolumes[i], packedBuffer, offset);
                offset += Transforms.BoundingSphere.packedLength;
            }

            var indicesLength = batchedIndices.length;
            packedBuffer[offset++] = indicesLength;

            for (var j = 0; j < indicesLength; ++j) {
                var batchedIndex = batchedIndices[j];

                Color.Color.pack(batchedIndex.color, packedBuffer, offset);
                offset += Color.Color.packedLength;

                packedBuffer[offset++] = batchedIndex.offset;
                packedBuffer[offset++] = batchedIndex.count;

                var batchIds = batchedIndex.batchIds;
                var batchIdsLength = batchIds.length;
                packedBuffer[offset++] = batchIdsLength;

                for (var k = 0; k < batchIdsLength; ++k) {
                    packedBuffer[offset++] = batchIds[k];
                }
            }

            return packedBuffer;
        }

        function createVectorTileGeometries(parameters, transferableObjects) {
            var boxes = defined.defined(parameters.boxes) ? new Float32Array(parameters.boxes) : undefined;
            var boxBatchIds = defined.defined(parameters.boxBatchIds) ? new Uint16Array(parameters.boxBatchIds) : undefined;
            var cylinders =  defined.defined(parameters.cylinders) ? new Float32Array(parameters.cylinders) : undefined;
            var cylinderBatchIds = defined.defined(parameters.cylinderBatchIds) ? new Uint16Array(parameters.cylinderBatchIds) : undefined;
            var ellipsoids =  defined.defined(parameters.ellipsoids) ? new Float32Array(parameters.ellipsoids) : undefined;
            var ellipsoidBatchIds = defined.defined(parameters.ellipsoidBatchIds) ? new Uint16Array(parameters.ellipsoidBatchIds) : undefined;
            var spheres = defined.defined(parameters.spheres) ?  new Float32Array(parameters.spheres) : undefined;
            var sphereBatchIds = defined.defined(parameters.sphereBatchIds) ? new Uint16Array(parameters.sphereBatchIds) : undefined;

            var numberOfBoxes = defined.defined(boxes) ? boxBatchIds.length : 0;
            var numberOfCylinders = defined.defined(cylinders) ? cylinderBatchIds.length : 0;
            var numberOfEllipsoids = defined.defined(ellipsoids) ? ellipsoidBatchIds.length : 0;
            var numberOfSpheres = defined.defined(spheres) ? sphereBatchIds.length : 0;

            var boxGeometry = BoxGeometry.BoxGeometry.getUnitBox();
            var cylinderGeometry = CylinderGeometry.CylinderGeometry.getUnitCylinder();
            var ellipsoidGeometry = EllipsoidGeometry.EllipsoidGeometry.getUnitEllipsoid();

            var boxPositions = boxGeometry.attributes.position.values;
            var cylinderPositions = cylinderGeometry.attributes.position.values;
            var ellipsoidPositions = ellipsoidGeometry.attributes.position.values;

            var numberOfPositions = boxPositions.length * numberOfBoxes;
            numberOfPositions += cylinderPositions.length * numberOfCylinders;
            numberOfPositions += ellipsoidPositions.length * (numberOfEllipsoids + numberOfSpheres);

            var boxIndices = boxGeometry.indices;
            var cylinderIndices = cylinderGeometry.indices;
            var ellipsoidIndices = ellipsoidGeometry.indices;

            var numberOfIndices = boxIndices.length * numberOfBoxes;
            numberOfIndices += cylinderIndices.length * numberOfCylinders;
            numberOfIndices += ellipsoidIndices.length * (numberOfEllipsoids + numberOfSpheres);

            var positions = new Float32Array(numberOfPositions);
            var vertexBatchIds = new Uint16Array(numberOfPositions / 3);
            var indices = IndexDatatype.IndexDatatype.createTypedArray(numberOfPositions / 3, numberOfIndices);

            var numberOfGeometries = numberOfBoxes + numberOfCylinders + numberOfEllipsoids + numberOfSpheres;
            var batchIds = new Uint16Array(numberOfGeometries);
            var batchedIndices = new Array(numberOfGeometries);
            var indexOffsets = new Uint32Array(numberOfGeometries);
            var indexCounts = new Uint32Array(numberOfGeometries);
            var boundingVolumes = new Array(numberOfGeometries);

            unpackBuffer(parameters.packedBuffer);

            var options = {
                batchTableColors : new Uint32Array(parameters.batchTableColors),
                positions : positions,
                vertexBatchIds : vertexBatchIds,
                indices : indices,
                batchIds : batchIds,
                batchedIndices : batchedIndices,
                indexOffsets : indexOffsets,
                indexCounts : indexCounts,
                boundingVolumes : boundingVolumes,
                positionOffset : 0,
                batchIdIndex : 0,
                indexOffset : 0,
                batchedIndicesOffset : 0,
                modelMatrix : scratchMatrix4,
                center : scratchCenter
            };

            createPrimitive(options, boxes, boxBatchIds, boxGeometry, boxModelMatrixAndBoundingVolume);
            createPrimitive(options, cylinders, cylinderBatchIds, cylinderGeometry, cylinderModelMatrixAndBoundingVolume);
            createPrimitive(options, ellipsoids, ellipsoidBatchIds, ellipsoidGeometry, ellipsoidModelMatrixAndBoundingVolume);
            createPrimitive(options, spheres, sphereBatchIds, ellipsoidGeometry, sphereModelMatrixAndBoundingVolume);

            var packedBuffer = packBuffer(indices.BYTES_PER_ELEMENT, batchedIndices, boundingVolumes);
            transferableObjects.push(positions.buffer, vertexBatchIds.buffer, indices.buffer);
            transferableObjects.push(batchIds.buffer, indexOffsets.buffer, indexCounts.buffer);
            transferableObjects.push(packedBuffer.buffer);

            return {
                positions : positions.buffer,
                vertexBatchIds : vertexBatchIds.buffer,
                indices : indices.buffer,
                indexOffsets : indexOffsets.buffer,
                indexCounts : indexCounts.buffer,
                batchIds : batchIds.buffer,
                packedBuffer : packedBuffer.buffer
            };
        }
    var createVectorTileGeometries$1 = createTaskProcessorWorker(createVectorTileGeometries);

    return createVectorTileGeometries$1;

});