/** * Cesium - https://github.com/CesiumGS/cesium * * Copyright 2011-2020 Cesium Contributors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Columbus View (Pat. Pend.) * * Portions licensed separately. * See https://github.com/CesiumGS/cesium/blob/master/LICENSE.md for full licensing details. */ define(['exports', './when-8d13db60', './Check-70bec281', './Cartographic-fe4be337', './BoundingSphere-775c5788', './ComponentDatatype-5862616f', './GeometryAttribute-ed9d707f', './PrimitiveType-97893bc7', './GeometryAttributes-aacecde6', './arrayFill-9766fb2e', './GeometryOffsetAttribute-999fc023', './VertexFormat-fe4db402'], function (exports, when, Check, Cartographic, BoundingSphere, ComponentDatatype, GeometryAttribute, PrimitiveType, GeometryAttributes, arrayFill, GeometryOffsetAttribute, VertexFormat) { 'use strict'; var diffScratch = new Cartographic.Cartesian3(); /** * Describes a cube centered at the origin. * * @alias BoxGeometry * @constructor * * @param {Object} options Object with the following properties: * @param {Cartesian3} options.minimum The minimum x, y, and z coordinates of the box. * @param {Cartesian3} options.maximum The maximum x, y, and z coordinates of the box. * @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed. * * @see BoxGeometry.fromDimensions * @see BoxGeometry.createGeometry * @see Packable * * @demo {@link https://sandcastle.cesium.com/index.html?src=Box.html|Cesium Sandcastle Box Demo} * * @example * var box = new Cesium.BoxGeometry({ * vertexFormat : Cesium.VertexFormat.POSITION_ONLY, * maximum : new Cesium.Cartesian3(250000.0, 250000.0, 250000.0), * minimum : new Cesium.Cartesian3(-250000.0, -250000.0, -250000.0) * }); * var geometry = Cesium.BoxGeometry.createGeometry(box); */ function BoxGeometry(options) { options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT); var min = options.minimum; var max = options.maximum; //>>includeStart('debug', pragmas.debug); Check.Check.typeOf.object('min', min); Check.Check.typeOf.object('max', max); if (when.defined(options.offsetAttribute) && options.offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.TOP) { throw new Check.DeveloperError('GeometryOffsetAttribute.TOP is not a supported options.offsetAttribute for this geometry.'); } //>>includeEnd('debug'); var vertexFormat = when.defaultValue(options.vertexFormat, VertexFormat.VertexFormat.DEFAULT); this._minimum = Cartographic.Cartesian3.clone(min); this._maximum = Cartographic.Cartesian3.clone(max); this._vertexFormat = vertexFormat; this._offsetAttribute = options.offsetAttribute; this._workerName = 'createBoxGeometry'; } /** * Creates a cube centered at the origin given its dimensions. * * @param {Object} options Object with the following properties: * @param {Cartesian3} options.dimensions The width, depth, and height of the box stored in the x, y, and z coordinates of the Cartesian3, respectively. * @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed. * @returns {BoxGeometry} * * @exception {DeveloperError} All dimensions components must be greater than or equal to zero. * * * @example * var box = Cesium.BoxGeometry.fromDimensions({ * vertexFormat : Cesium.VertexFormat.POSITION_ONLY, * dimensions : new Cesium.Cartesian3(500000.0, 500000.0, 500000.0) * }); * var geometry = Cesium.BoxGeometry.createGeometry(box); * * @see BoxGeometry.createGeometry */ BoxGeometry.fromDimensions = function(options) { options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT); var dimensions = options.dimensions; //>>includeStart('debug', pragmas.debug); Check.Check.typeOf.object('dimensions', dimensions); Check.Check.typeOf.number.greaterThanOrEquals('dimensions.x', dimensions.x, 0); Check.Check.typeOf.number.greaterThanOrEquals('dimensions.y', dimensions.y, 0); Check.Check.typeOf.number.greaterThanOrEquals('dimensions.z', dimensions.z, 0); //>>includeEnd('debug'); var corner = Cartographic.Cartesian3.multiplyByScalar(dimensions, 0.5, new Cartographic.Cartesian3()); return new BoxGeometry({ minimum : Cartographic.Cartesian3.negate(corner, new Cartographic.Cartesian3()), maximum : corner, vertexFormat : options.vertexFormat, offsetAttribute: options.offsetAttribute }); }; /** * Creates a cube from the dimensions of an AxisAlignedBoundingBox. * * @param {AxisAlignedBoundingBox} boundingBox A description of the AxisAlignedBoundingBox. * @returns {BoxGeometry} * * * * @example * var aabb = Cesium.AxisAlignedBoundingBox.fromPoints(Cesium.Cartesian3.fromDegreesArray([ * -72.0, 40.0, * -70.0, 35.0, * -75.0, 30.0, * -70.0, 30.0, * -68.0, 40.0 * ])); * var box = Cesium.BoxGeometry.fromAxisAlignedBoundingBox(aabb); * * @see BoxGeometry.createGeometry */ BoxGeometry.fromAxisAlignedBoundingBox = function (boundingBox) { //>>includeStart('debug', pragmas.debug); Check.Check.typeOf.object('boundingBox', boundingBox); //>>includeEnd('debug'); return new BoxGeometry({ minimum : boundingBox.minimum, maximum : boundingBox.maximum }); }; /** * The number of elements used to pack the object into an array. * @type {Number} */ BoxGeometry.packedLength = 2 * Cartographic.Cartesian3.packedLength + VertexFormat.VertexFormat.packedLength + 1; /** * Stores the provided instance into the provided array. * * @param {BoxGeometry} value The value to pack. * @param {Number[]} array The array to pack into. * @param {Number} [startingIndex=0] The index into the array at which to start packing the elements. * * @returns {Number[]} The array that was packed into */ BoxGeometry.pack = function(value, array, startingIndex) { //>>includeStart('debug', pragmas.debug); Check.Check.typeOf.object('value', value); Check.Check.defined('array', array); //>>includeEnd('debug'); startingIndex = when.defaultValue(startingIndex, 0); Cartographic.Cartesian3.pack(value._minimum, array, startingIndex); Cartographic.Cartesian3.pack(value._maximum, array, startingIndex + Cartographic.Cartesian3.packedLength); VertexFormat.VertexFormat.pack(value._vertexFormat, array, startingIndex + 2 * Cartographic.Cartesian3.packedLength); array[startingIndex + 2 * Cartographic.Cartesian3.packedLength + VertexFormat.VertexFormat.packedLength] = when.defaultValue(value._offsetAttribute, -1); return array; }; var scratchMin = new Cartographic.Cartesian3(); var scratchMax = new Cartographic.Cartesian3(); var scratchVertexFormat = new VertexFormat.VertexFormat(); var scratchOptions = { minimum: scratchMin, maximum: scratchMax, vertexFormat: scratchVertexFormat, offsetAttribute : undefined }; /** * Retrieves an instance from a packed array. * * @param {Number[]} array The packed array. * @param {Number} [startingIndex=0] The starting index of the element to be unpacked. * @param {BoxGeometry} [result] The object into which to store the result. * @returns {BoxGeometry} The modified result parameter or a new BoxGeometry instance if one was not provided. */ BoxGeometry.unpack = function(array, startingIndex, result) { //>>includeStart('debug', pragmas.debug); Check.Check.defined('array', array); //>>includeEnd('debug'); startingIndex = when.defaultValue(startingIndex, 0); var min = Cartographic.Cartesian3.unpack(array, startingIndex, scratchMin); var max = Cartographic.Cartesian3.unpack(array, startingIndex + Cartographic.Cartesian3.packedLength, scratchMax); var vertexFormat = VertexFormat.VertexFormat.unpack(array, startingIndex + 2 * Cartographic.Cartesian3.packedLength, scratchVertexFormat); var offsetAttribute = array[startingIndex + 2 * Cartographic.Cartesian3.packedLength + VertexFormat.VertexFormat.packedLength]; if (!when.defined(result)) { scratchOptions.offsetAttribute = offsetAttribute === -1 ? undefined : offsetAttribute; return new BoxGeometry(scratchOptions); } result._minimum = Cartographic.Cartesian3.clone(min, result._minimum); result._maximum = Cartographic.Cartesian3.clone(max, result._maximum); result._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, result._vertexFormat); result._offsetAttribute = offsetAttribute === -1 ? undefined : offsetAttribute; return result; }; /** * Computes the geometric representation of a box, including its vertices, indices, and a bounding sphere. * * @param {BoxGeometry} boxGeometry A description of the box. * @returns {Geometry|undefined} The computed vertices and indices. */ BoxGeometry.createGeometry = function(boxGeometry) { var min = boxGeometry._minimum; var max = boxGeometry._maximum; var vertexFormat = boxGeometry._vertexFormat; if (Cartographic.Cartesian3.equals(min, max)) { return; } var attributes = new GeometryAttributes.GeometryAttributes(); var indices; var positions; if (vertexFormat.position && (vertexFormat.st || vertexFormat.normal || vertexFormat.tangent || vertexFormat.bitangent)) { if (vertexFormat.position) { // 8 corner points. Duplicated 3 times each for each incident edge/face. positions = new Float64Array(6 * 4 * 3); // +z face positions[0] = min.x; positions[1] = min.y; positions[2] = max.z; positions[3] = max.x; positions[4] = min.y; positions[5] = max.z; positions[6] = max.x; positions[7] = max.y; positions[8] = max.z; positions[9] = min.x; positions[10] = max.y; positions[11] = max.z; // -z face positions[12] = min.x; positions[13] = min.y; positions[14] = min.z; positions[15] = max.x; positions[16] = min.y; positions[17] = min.z; positions[18] = max.x; positions[19] = max.y; positions[20] = min.z; positions[21] = min.x; positions[22] = max.y; positions[23] = min.z; // +x face positions[24] = max.x; positions[25] = min.y; positions[26] = min.z; positions[27] = max.x; positions[28] = max.y; positions[29] = min.z; positions[30] = max.x; positions[31] = max.y; positions[32] = max.z; positions[33] = max.x; positions[34] = min.y; positions[35] = max.z; // -x face positions[36] = min.x; positions[37] = min.y; positions[38] = min.z; positions[39] = min.x; positions[40] = max.y; positions[41] = min.z; positions[42] = min.x; positions[43] = max.y; positions[44] = max.z; positions[45] = min.x; positions[46] = min.y; positions[47] = max.z; // +y face positions[48] = min.x; positions[49] = max.y; positions[50] = min.z; positions[51] = max.x; positions[52] = max.y; positions[53] = min.z; positions[54] = max.x; positions[55] = max.y; positions[56] = max.z; positions[57] = min.x; positions[58] = max.y; positions[59] = max.z; // -y face positions[60] = min.x; positions[61] = min.y; positions[62] = min.z; positions[63] = max.x; positions[64] = min.y; positions[65] = min.z; positions[66] = max.x; positions[67] = min.y; positions[68] = max.z; positions[69] = min.x; positions[70] = min.y; positions[71] = max.z; attributes.position = new GeometryAttribute.GeometryAttribute({ componentDatatype : ComponentDatatype.ComponentDatatype.DOUBLE, componentsPerAttribute : 3, values : positions }); } if (vertexFormat.normal) { var normals = new Float32Array(6 * 4 * 3); // +z face normals[0] = 0.0; normals[1] = 0.0; normals[2] = 1.0; normals[3] = 0.0; normals[4] = 0.0; normals[5] = 1.0; normals[6] = 0.0; normals[7] = 0.0; normals[8] = 1.0; normals[9] = 0.0; normals[10] = 0.0; normals[11] = 1.0; // -z face normals[12] = 0.0; normals[13] = 0.0; normals[14] = -1.0; normals[15] = 0.0; normals[16] = 0.0; normals[17] = -1.0; normals[18] = 0.0; normals[19] = 0.0; normals[20] = -1.0; normals[21] = 0.0; normals[22] = 0.0; normals[23] = -1.0; // +x face normals[24] = 1.0; normals[25] = 0.0; normals[26] = 0.0; normals[27] = 1.0; normals[28] = 0.0; normals[29] = 0.0; normals[30] = 1.0; normals[31] = 0.0; normals[32] = 0.0; normals[33] = 1.0; normals[34] = 0.0; normals[35] = 0.0; // -x face normals[36] = -1.0; normals[37] = 0.0; normals[38] = 0.0; normals[39] = -1.0; normals[40] = 0.0; normals[41] = 0.0; normals[42] = -1.0; normals[43] = 0.0; normals[44] = 0.0; normals[45] = -1.0; normals[46] = 0.0; normals[47] = 0.0; // +y face normals[48] = 0.0; normals[49] = 1.0; normals[50] = 0.0; normals[51] = 0.0; normals[52] = 1.0; normals[53] = 0.0; normals[54] = 0.0; normals[55] = 1.0; normals[56] = 0.0; normals[57] = 0.0; normals[58] = 1.0; normals[59] = 0.0; // -y face normals[60] = 0.0; normals[61] = -1.0; normals[62] = 0.0; normals[63] = 0.0; normals[64] = -1.0; normals[65] = 0.0; normals[66] = 0.0; normals[67] = -1.0; normals[68] = 0.0; normals[69] = 0.0; normals[70] = -1.0; normals[71] = 0.0; attributes.normal = new GeometryAttribute.GeometryAttribute({ componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT, componentsPerAttribute : 3, values : normals }); } if (vertexFormat.st) { // 纹理坐标多用一位存储顶点数据哪个面，BOX剖面分析贴纹理需要用 var texCoords = new Float32Array(6 * 4 * 3); var texValueIndex = 0; // +z face texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = -1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = -1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = -1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = -1.0; // -z face texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = -1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = -1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = -1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = -1.0; //+x face texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; // -x face texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; // +y face texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; // -y face texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 0.0; texCoords[texValueIndex++] = 1.0; texCoords[texValueIndex++] = 1.0; attributes.st = new GeometryAttribute.GeometryAttribute({ componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT, componentsPerAttribute : 3, values : texCoords }); } if (vertexFormat.tangent) { var tangents = new Float32Array(6 * 4 * 3); // +z face tangents[0] = 1.0; tangents[1] = 0.0; tangents[2] = 0.0; tangents[3] = 1.0; tangents[4] = 0.0; tangents[5] = 0.0; tangents[6] = 1.0; tangents[7] = 0.0; tangents[8] = 0.0; tangents[9] = 1.0; tangents[10] = 0.0; tangents[11] = 0.0; // -z face tangents[12] = -1.0; tangents[13] = 0.0; tangents[14] = 0.0; tangents[15] = -1.0; tangents[16] = 0.0; tangents[17] = 0.0; tangents[18] = -1.0; tangents[19] = 0.0; tangents[20] = 0.0; tangents[21] = -1.0; tangents[22] = 0.0; tangents[23] = 0.0; // +x face tangents[24] = 0.0; tangents[25] = 1.0; tangents[26] = 0.0; tangents[27] = 0.0; tangents[28] = 1.0; tangents[29] = 0.0; tangents[30] = 0.0; tangents[31] = 1.0; tangents[32] = 0.0; tangents[33] = 0.0; tangents[34] = 1.0; tangents[35] = 0.0; // -x face tangents[36] = 0.0; tangents[37] = -1.0; tangents[38] = 0.0; tangents[39] = 0.0; tangents[40] = -1.0; tangents[41] = 0.0; tangents[42] = 0.0; tangents[43] = -1.0; tangents[44] = 0.0; tangents[45] = 0.0; tangents[46] = -1.0; tangents[47] = 0.0; // +y face tangents[48] = -1.0; tangents[49] = 0.0; tangents[50] = 0.0; tangents[51] = -1.0; tangents[52] = 0.0; tangents[53] = 0.0; tangents[54] = -1.0; tangents[55] = 0.0; tangents[56] = 0.0; tangents[57] = -1.0; tangents[58] = 0.0; tangents[59] = 0.0; // -y face tangents[60] = 1.0; tangents[61] = 0.0; tangents[62] = 0.0; tangents[63] = 1.0; tangents[64] = 0.0; tangents[65] = 0.0; tangents[66] = 1.0; tangents[67] = 0.0; tangents[68] = 0.0; tangents[69] = 1.0; tangents[70] = 0.0; tangents[71] = 0.0; attributes.tangent = new GeometryAttribute.GeometryAttribute({ componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT, componentsPerAttribute : 3, values : tangents }); } if (vertexFormat.bitangent) { var bitangents = new Float32Array(6 * 4 * 3); // +z face bitangents[0] = 0.0; bitangents[1] = 1.0; bitangents[2] = 0.0; bitangents[3] = 0.0; bitangents[4] = 1.0; bitangents[5] = 0.0; bitangents[6] = 0.0; bitangents[7] = 1.0; bitangents[8] = 0.0; bitangents[9] = 0.0; bitangents[10] = 1.0; bitangents[11] = 0.0; // -z face bitangents[12] = 0.0; bitangents[13] = 1.0; bitangents[14] = 0.0; bitangents[15] = 0.0; bitangents[16] = 1.0; bitangents[17] = 0.0; bitangents[18] = 0.0; bitangents[19] = 1.0; bitangents[20] = 0.0; bitangents[21] = 0.0; bitangents[22] = 1.0; bitangents[23] = 0.0; // +x face bitangents[24] = 0.0; bitangents[25] = 0.0; bitangents[26] = 1.0; bitangents[27] = 0.0; bitangents[28] = 0.0; bitangents[29] = 1.0; bitangents[30] = 0.0; bitangents[31] = 0.0; bitangents[32] = 1.0; bitangents[33] = 0.0; bitangents[34] = 0.0; bitangents[35] = 1.0; // -x face bitangents[36] = 0.0; bitangents[37] = 0.0; bitangents[38] = 1.0; bitangents[39] = 0.0; bitangents[40] = 0.0; bitangents[41] = 1.0; bitangents[42] = 0.0; bitangents[43] = 0.0; bitangents[44] = 1.0; bitangents[45] = 0.0; bitangents[46] = 0.0; bitangents[47] = 1.0; // +y face bitangents[48] = 0.0; bitangents[49] = 0.0; bitangents[50] = 1.0; bitangents[51] = 0.0; bitangents[52] = 0.0; bitangents[53] = 1.0; bitangents[54] = 0.0; bitangents[55] = 0.0; bitangents[56] = 1.0; bitangents[57] = 0.0; bitangents[58] = 0.0; bitangents[59] = 1.0; // -y face bitangents[60] = 0.0; bitangents[61] = 0.0; bitangents[62] = 1.0; bitangents[63] = 0.0; bitangents[64] = 0.0; bitangents[65] = 1.0; bitangents[66] = 0.0; bitangents[67] = 0.0; bitangents[68] = 1.0; bitangents[69] = 0.0; bitangents[70] = 0.0; bitangents[71] = 1.0; attributes.bitangent = new GeometryAttribute.GeometryAttribute({ componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT, componentsPerAttribute : 3, values : bitangents }); } // 12 triangles: 6 faces, 2 triangles each. indices = new Uint16Array(6 * 2 * 3); // +z face indices[0] = 0; indices[1] = 1; indices[2] = 2; indices[3] = 0; indices[4] = 2; indices[5] = 3; // -z face indices[6] = 4 + 2; indices[7] = 4 + 1; indices[8] = 4 + 0; indices[9] = 4 + 3; indices[10] = 4 + 2; indices[11] = 4 + 0; // +x face indices[12] = 8 + 0; indices[13] = 8 + 1; indices[14] = 8 + 2; indices[15] = 8 + 0; indices[16] = 8 + 2; indices[17] = 8 + 3; // -x face indices[18] = 12 + 2; indices[19] = 12 + 1; indices[20] = 12 + 0; indices[21] = 12 + 3; indices[22] = 12 + 2; indices[23] = 12 + 0; // +y face indices[24] = 16 + 2; indices[25] = 16 + 1; indices[26] = 16 + 0; indices[27] = 16 + 3; indices[28] = 16 + 2; indices[29] = 16 + 0; // -y face indices[30] = 20 + 0; indices[31] = 20 + 1; indices[32] = 20 + 2; indices[33] = 20 + 0; indices[34] = 20 + 2; indices[35] = 20 + 3; } else { // Positions only - no need to duplicate corner points positions = new Float64Array(8 * 3); positions[0] = min.x; positions[1] = min.y; positions[2] = min.z; positions[3] = max.x; positions[4] = min.y; positions[5] = min.z; positions[6] = max.x; positions[7] = max.y; positions[8] = min.z; positions[9] = min.x; positions[10] = max.y; positions[11] = min.z; positions[12] = min.x; positions[13] = min.y; positions[14] = max.z; positions[15] = max.x; positions[16] = min.y; positions[17] = max.z; positions[18] = max.x; positions[19] = max.y; positions[20] = max.z; positions[21] = min.x; positions[22] = max.y; positions[23] = max.z; attributes.position = new GeometryAttribute.GeometryAttribute({ componentDatatype : ComponentDatatype.ComponentDatatype.DOUBLE, componentsPerAttribute : 3, values : positions }); // 12 triangles: 6 faces, 2 triangles each. indices = new Uint16Array(6 * 2 * 3); // plane z = corner.Z indices[0] = 4; indices[1] = 5; indices[2] = 6; indices[3] = 4; indices[4] = 6; indices[5] = 7; // plane z = -corner.Z indices[6] = 1; indices[7] = 0; indices[8] = 3; indices[9] = 1; indices[10] = 3; indices[11] = 2; // plane x = corner.X indices[12] = 1; indices[13] = 6; indices[14] = 5; indices[15] = 1; indices[16] = 2; indices[17] = 6; // plane y = corner.Y indices[18] = 2; indices[19] = 3; indices[20] = 7; indices[21] = 2; indices[22] = 7; indices[23] = 6; // plane x = -corner.X indices[24] = 3; indices[25] = 0; indices[26] = 4; indices[27] = 3; indices[28] = 4; indices[29] = 7; // plane y = -corner.Y indices[30] = 0; indices[31] = 1; indices[32] = 5; indices[33] = 0; indices[34] = 5; indices[35] = 4; } var diff = Cartographic.Cartesian3.subtract(max, min, diffScratch); var radius = Cartographic.Cartesian3.magnitude(diff) * 0.5; if (when.defined(boxGeometry._offsetAttribute)) { var length = positions.length; var applyOffset = new Uint8Array(length / 3); var offsetValue = boxGeometry._offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.NONE ? 0 : 1; arrayFill.arrayFill(applyOffset, offsetValue); attributes.applyOffset = new GeometryAttribute.GeometryAttribute({ componentDatatype : ComponentDatatype.ComponentDatatype.UNSIGNED_BYTE, componentsPerAttribute : 1, values: applyOffset }); } return new GeometryAttribute.Geometry({ attributes : attributes, indices : indices, primitiveType : PrimitiveType.PrimitiveType.TRIANGLES, boundingSphere : new BoundingSphere.BoundingSphere(Cartographic.Cartesian3.ZERO, radius), offsetAttribute : boxGeometry._offsetAttribute }); }; var unitBoxGeometry; /** * Returns the geometric representation of a unit box, including its vertices, indices, and a bounding sphere. * @returns {Geometry} The computed vertices and indices. * * @private */ BoxGeometry.getUnitBox = function() { if (!when.defined(unitBoxGeometry)) { unitBoxGeometry = BoxGeometry.createGeometry(BoxGeometry.fromDimensions({ dimensions : new Cartographic.Cartesian3(1.0, 1.0, 1.0), vertexFormat : VertexFormat.VertexFormat.POSITION_ONLY })); } return unitBoxGeometry; }; exports.BoxGeometry = BoxGeometry; });