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41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 41x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 115x 156x 156x 156x 1x 1x 1x 1x 156x 1x | import BoundingSphere from "./BoundingSphere.js";
import Cartesian3 from "./Cartesian3.js";
import Check from "./Check.js";
import ComponentDatatype from "./ComponentDatatype.js";
import Frozen from "./Frozen.js";
import defined from "./defined.js";
import DeveloperError from "./DeveloperError.js";
import Geometry from "./Geometry.js";
import GeometryAttribute from "./GeometryAttribute.js";
import GeometryAttributes from "./GeometryAttributes.js";
import GeometryOffsetAttribute from "./GeometryOffsetAttribute.js";
import PrimitiveType from "./PrimitiveType.js";
import VertexFormat from "./VertexFormat.js";
const diffScratch = new 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
* const 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)
* });
* const geometry = Cesium.BoxGeometry.createGeometry(box);
*/
function BoxGeometry(options) {
options = options ?? Frozen.EMPTY_OBJECT;
const min = options.minimum;
const max = options.maximum;
//>>includeStart('debug', pragmas.debug);
Check.typeOf.object("min", min);
Check.typeOf.object("max", max);
Iif (
defined(options.offsetAttribute) &&
options.offsetAttribute === GeometryOffsetAttribute.TOP
) {
throw new DeveloperError(
"GeometryOffsetAttribute.TOP is not a supported options.offsetAttribute for this geometry.",
);
}
//>>includeEnd('debug');
const vertexFormat = options.vertexFormat ?? VertexFormat.DEFAULT;
this._minimum = Cartesian3.clone(min);
this._maximum = 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 <code>Cartesian3</code>, 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
* const box = Cesium.BoxGeometry.fromDimensions({
* vertexFormat : Cesium.VertexFormat.POSITION_ONLY,
* dimensions : new Cesium.Cartesian3(500000.0, 500000.0, 500000.0)
* });
* const geometry = Cesium.BoxGeometry.createGeometry(box);
*
* @see BoxGeometry.createGeometry
*/
BoxGeometry.fromDimensions = function (options) {
options = options ?? Frozen.EMPTY_OBJECT;
const dimensions = options.dimensions;
//>>includeStart('debug', pragmas.debug);
Check.typeOf.object("dimensions", dimensions);
Check.typeOf.number.greaterThanOrEquals("dimensions.x", dimensions.x, 0);
Check.typeOf.number.greaterThanOrEquals("dimensions.y", dimensions.y, 0);
Check.typeOf.number.greaterThanOrEquals("dimensions.z", dimensions.z, 0);
//>>includeEnd('debug');
const corner = Cartesian3.multiplyByScalar(dimensions, 0.5, new Cartesian3());
return new BoxGeometry({
minimum: Cartesian3.negate(corner, new 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
* const 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
* ]));
* const box = Cesium.BoxGeometry.fromAxisAlignedBoundingBox(aabb);
*
* @see BoxGeometry.createGeometry
*/
BoxGeometry.fromAxisAlignedBoundingBox = function (boundingBox) {
//>>includeStart('debug', pragmas.debug);
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 * Cartesian3.packedLength + 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.typeOf.object("value", value);
Check.defined("array", array);
//>>includeEnd('debug');
startingIndex = startingIndex ?? 0;
Cartesian3.pack(value._minimum, array, startingIndex);
Cartesian3.pack(
value._maximum,
array,
startingIndex + Cartesian3.packedLength,
);
VertexFormat.pack(
value._vertexFormat,
array,
startingIndex + 2 * Cartesian3.packedLength,
);
array[
startingIndex + 2 * Cartesian3.packedLength + VertexFormat.packedLength
] = value._offsetAttribute ?? -1;
return array;
};
const scratchMin = new Cartesian3();
const scratchMax = new Cartesian3();
const scratchVertexFormat = new VertexFormat();
const 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.defined("array", array);
//>>includeEnd('debug');
startingIndex = startingIndex ?? 0;
const min = Cartesian3.unpack(array, startingIndex, scratchMin);
const max = Cartesian3.unpack(
array,
startingIndex + Cartesian3.packedLength,
scratchMax,
);
const vertexFormat = VertexFormat.unpack(
array,
startingIndex + 2 * Cartesian3.packedLength,
scratchVertexFormat,
);
const offsetAttribute =
array[
startingIndex + 2 * Cartesian3.packedLength + VertexFormat.packedLength
];
Eif (!defined(result)) {
scratchOptions.offsetAttribute =
offsetAttribute === -1 ? undefined : offsetAttribute;
return new BoxGeometry(scratchOptions);
}
result._minimum = Cartesian3.clone(min, result._minimum);
result._maximum = Cartesian3.clone(max, result._maximum);
result._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) {
const min = boxGeometry._minimum;
const max = boxGeometry._maximum;
const vertexFormat = boxGeometry._vertexFormat;
if (Cartesian3.equals(min, max)) {
return;
}
const attributes = new GeometryAttributes();
let indices;
let positions;
if (
vertexFormat.position &&
(vertexFormat.st ||
vertexFormat.normal ||
vertexFormat.tangent ||
vertexFormat.bitangent)
) {
Eif (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({
componentDatatype: ComponentDatatype.DOUBLE,
componentsPerAttribute: 3,
values: positions,
});
}
if (vertexFormat.normal) {
const 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({
componentDatatype: ComponentDatatype.FLOAT,
componentsPerAttribute: 3,
values: normals,
});
}
if (vertexFormat.st) {
const texCoords = new Float32Array(6 * 4 * 2);
// +z face
texCoords[0] = 0.0;
texCoords[1] = 0.0;
texCoords[2] = 1.0;
texCoords[3] = 0.0;
texCoords[4] = 1.0;
texCoords[5] = 1.0;
texCoords[6] = 0.0;
texCoords[7] = 1.0;
// -z face
texCoords[8] = 1.0;
texCoords[9] = 0.0;
texCoords[10] = 0.0;
texCoords[11] = 0.0;
texCoords[12] = 0.0;
texCoords[13] = 1.0;
texCoords[14] = 1.0;
texCoords[15] = 1.0;
//+x face
texCoords[16] = 0.0;
texCoords[17] = 0.0;
texCoords[18] = 1.0;
texCoords[19] = 0.0;
texCoords[20] = 1.0;
texCoords[21] = 1.0;
texCoords[22] = 0.0;
texCoords[23] = 1.0;
// -x face
texCoords[24] = 1.0;
texCoords[25] = 0.0;
texCoords[26] = 0.0;
texCoords[27] = 0.0;
texCoords[28] = 0.0;
texCoords[29] = 1.0;
texCoords[30] = 1.0;
texCoords[31] = 1.0;
// +y face
texCoords[32] = 1.0;
texCoords[33] = 0.0;
texCoords[34] = 0.0;
texCoords[35] = 0.0;
texCoords[36] = 0.0;
texCoords[37] = 1.0;
texCoords[38] = 1.0;
texCoords[39] = 1.0;
// -y face
texCoords[40] = 0.0;
texCoords[41] = 0.0;
texCoords[42] = 1.0;
texCoords[43] = 0.0;
texCoords[44] = 1.0;
texCoords[45] = 1.0;
texCoords[46] = 0.0;
texCoords[47] = 1.0;
attributes.st = new GeometryAttribute({
componentDatatype: ComponentDatatype.FLOAT,
componentsPerAttribute: 2,
values: texCoords,
});
}
if (vertexFormat.tangent) {
const 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({
componentDatatype: ComponentDatatype.FLOAT,
componentsPerAttribute: 3,
values: tangents,
});
}
if (vertexFormat.bitangent) {
const 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({
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({
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;
}
const diff = Cartesian3.subtract(max, min, diffScratch);
const radius = Cartesian3.magnitude(diff) * 0.5;
if (defined(boxGeometry._offsetAttribute)) {
const length = positions.length;
const offsetValue =
boxGeometry._offsetAttribute === GeometryOffsetAttribute.NONE ? 0 : 1;
const applyOffset = new Uint8Array(length / 3).fill(offsetValue);
attributes.applyOffset = new GeometryAttribute({
componentDatatype: ComponentDatatype.UNSIGNED_BYTE,
componentsPerAttribute: 1,
values: applyOffset,
});
}
return new Geometry({
attributes: attributes,
indices: indices,
primitiveType: PrimitiveType.TRIANGLES,
boundingSphere: new BoundingSphere(Cartesian3.ZERO, radius),
offsetAttribute: boxGeometry._offsetAttribute,
});
};
let 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 (!defined(unitBoxGeometry)) {
unitBoxGeometry = BoxGeometry.createGeometry(
BoxGeometry.fromDimensions({
dimensions: new Cartesian3(1.0, 1.0, 1.0),
vertexFormat: VertexFormat.POSITION_ONLY,
}),
);
}
return unitBoxGeometry;
};
export default BoxGeometry;
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