Agriculture-front-end/public/Cesium/Workers/CylinderGeometry-e26c252a.js
2023-04-16 22:33:44 +08:00

446 lines
20 KiB
JavaScript

/**
* 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', './Math-61ede240', './Cartographic-f2a06374', './Cartesian2-16a61632', './BoundingSphere-d018a565', './ComponentDatatype-5862616f', './GeometryAttribute-1e248a71', './PrimitiveType-97893bc7', './GeometryAttributes-aacecde6', './IndexDatatype-9435b55f', './arrayFill-9766fb2e', './GeometryOffsetAttribute-999fc023', './VertexFormat-fe4db402', './CylinderGeometryLibrary-8c0fda9f'], function (exports, when, Check, _Math, Cartographic, Cartesian2, BoundingSphere, ComponentDatatype, GeometryAttribute, PrimitiveType, GeometryAttributes, IndexDatatype, arrayFill, GeometryOffsetAttribute, VertexFormat, CylinderGeometryLibrary) { 'use strict';
var radiusScratch = new Cartesian2.Cartesian2();
var normalScratch = new Cartographic.Cartesian3();
var bitangentScratch = new Cartographic.Cartesian3();
var tangentScratch = new Cartographic.Cartesian3();
var positionScratch = new Cartographic.Cartesian3();
/**
* A description of a cylinder.
*
* @alias CylinderGeometry
* @constructor
*
* @param {Object} options Object with the following properties:
* @param {Number} options.length The length of the cylinder.
* @param {Number} options.topRadius The radius of the top of the cylinder.
* @param {Number} options.bottomRadius The radius of the bottom of the cylinder.
* @param {Number} [options.slices=128] The number of edges around the perimeter of the cylinder.
* @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
*
* @exception {DeveloperError} options.slices must be greater than or equal to 3.
*
* @see CylinderGeometry.createGeometry
*
* @example
* // create cylinder geometry
* var cylinder = new Cesium.CylinderGeometry({
* length: 200000,
* topRadius: 80000,
* bottomRadius: 200000,
* });
* var geometry = Cesium.CylinderGeometry.createGeometry(cylinder);
*/
function CylinderGeometry(options) {
options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
var length = options.length;
var topRadius = options.topRadius;
var bottomRadius = options.bottomRadius;
var vertexFormat = when.defaultValue(options.vertexFormat, VertexFormat.VertexFormat.DEFAULT);
var slices = when.defaultValue(options.slices, 128);
//>>includeStart('debug', pragmas.debug);
if (!when.defined(length)) {
throw new Check.DeveloperError('options.length must be defined.');
}
if (!when.defined(topRadius)) {
throw new Check.DeveloperError('options.topRadius must be defined.');
}
if (!when.defined(bottomRadius)) {
throw new Check.DeveloperError('options.bottomRadius must be defined.');
}
if (slices < 3) {
throw new Check.DeveloperError('options.slices must be greater than or equal to 3.');
}
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');
this._length = length;
this._topRadius = topRadius;
this._bottomRadius = bottomRadius;
this._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat);
this._slices = slices;
this._offsetAttribute = options.offsetAttribute;
this._workerName = 'createCylinderGeometry';
}
/**
* The number of elements used to pack the object into an array.
* @type {Number}
*/
CylinderGeometry.packedLength = VertexFormat.VertexFormat.packedLength + 5;
/**
* Stores the provided instance into the provided array.
*
* @param {CylinderGeometry} 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
*/
CylinderGeometry.pack = function(value, array, startingIndex) {
//>>includeStart('debug', pragmas.debug);
if (!when.defined(value)) {
throw new Check.DeveloperError('value is required');
}
if (!when.defined(array)) {
throw new Check.DeveloperError('array is required');
}
//>>includeEnd('debug');
startingIndex = when.defaultValue(startingIndex, 0);
VertexFormat.VertexFormat.pack(value._vertexFormat, array, startingIndex);
startingIndex += VertexFormat.VertexFormat.packedLength;
array[startingIndex++] = value._length;
array[startingIndex++] = value._topRadius;
array[startingIndex++] = value._bottomRadius;
array[startingIndex++] = value._slices;
array[startingIndex] = when.defaultValue(value._offsetAttribute, -1);
return array;
};
var scratchVertexFormat = new VertexFormat.VertexFormat();
var scratchOptions = {
vertexFormat : scratchVertexFormat,
length : undefined,
topRadius : undefined,
bottomRadius : undefined,
slices : undefined,
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 {CylinderGeometry} [result] The object into which to store the result.
* @returns {CylinderGeometry} The modified result parameter or a new CylinderGeometry instance if one was not provided.
*/
CylinderGeometry.unpack = function(array, startingIndex, result) {
//>>includeStart('debug', pragmas.debug);
if (!when.defined(array)) {
throw new Check.DeveloperError('array is required');
}
//>>includeEnd('debug');
startingIndex = when.defaultValue(startingIndex, 0);
var vertexFormat = VertexFormat.VertexFormat.unpack(array, startingIndex, scratchVertexFormat);
startingIndex += VertexFormat.VertexFormat.packedLength;
var length = array[startingIndex++];
var topRadius = array[startingIndex++];
var bottomRadius = array[startingIndex++];
var slices = array[startingIndex++];
var offsetAttribute = array[startingIndex];
if (!when.defined(result)) {
scratchOptions.length = length;
scratchOptions.topRadius = topRadius;
scratchOptions.bottomRadius = bottomRadius;
scratchOptions.slices = slices;
scratchOptions.offsetAttribute = offsetAttribute === -1 ? undefined : offsetAttribute;
return new CylinderGeometry(scratchOptions);
}
result._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, result._vertexFormat);
result._length = length;
result._topRadius = topRadius;
result._bottomRadius = bottomRadius;
result._slices = slices;
result._offsetAttribute = offsetAttribute === -1 ? undefined : offsetAttribute;
return result;
};
/**
* Computes the geometric representation of a cylinder, including its vertices, indices, and a bounding sphere.
*
* @param {CylinderGeometry} cylinderGeometry A description of the cylinder.
* @returns {Geometry|undefined} The computed vertices and indices.
*/
CylinderGeometry.createGeometry = function(cylinderGeometry) {
var length = cylinderGeometry._length;
var topRadius = cylinderGeometry._topRadius;
var bottomRadius = cylinderGeometry._bottomRadius;
var vertexFormat = cylinderGeometry._vertexFormat;
var slices = cylinderGeometry._slices;
if ((length <= 0) || (topRadius < 0) || (bottomRadius < 0) || ((topRadius === 0) && (bottomRadius === 0))) {
return;
}
var twoSlices = slices + slices;
var threeSlices = slices + twoSlices;
var numVertices = twoSlices + twoSlices;
var positions = CylinderGeometryLibrary.CylinderGeometryLibrary.computePositions(length, topRadius, bottomRadius, slices, true);
var st = (vertexFormat.st) ? new Float32Array(numVertices * 2) : undefined;
var normals = (vertexFormat.normal) ? new Float32Array(numVertices * 3) : undefined;
var tangents = (vertexFormat.tangent) ? new Float32Array(numVertices * 3) : undefined;
var bitangents = (vertexFormat.bitangent) ? new Float32Array(numVertices * 3) : undefined;
var i;
var computeNormal = (vertexFormat.normal || vertexFormat.tangent || vertexFormat.bitangent);
if (computeNormal) {
var computeTangent = (vertexFormat.tangent || vertexFormat.bitangent);
var normalIndex = 0;
var tangentIndex = 0;
var bitangentIndex = 0;
var theta = Math.atan2(bottomRadius - topRadius, length);
var normal = normalScratch;
normal.z = Math.sin(theta);
var normalScale = Math.cos(theta);
var tangent = tangentScratch;
var bitangent = bitangentScratch;
for (i = 0; i < slices; i++) {
var angle = i / slices * _Math.CesiumMath.TWO_PI;
var x = normalScale * Math.cos(angle);
var y = normalScale * Math.sin(angle);
if (computeNormal) {
normal.x = x;
normal.y = y;
if (computeTangent) {
tangent = Cartographic.Cartesian3.normalize(Cartographic.Cartesian3.cross(Cartographic.Cartesian3.UNIT_Z, normal, tangent), tangent);
}
if (vertexFormat.normal) {
normals[normalIndex++] = normal.x;
normals[normalIndex++] = normal.y;
normals[normalIndex++] = normal.z;
normals[normalIndex++] = normal.x;
normals[normalIndex++] = normal.y;
normals[normalIndex++] = normal.z;
}
if (vertexFormat.tangent) {
tangents[tangentIndex++] = tangent.x;
tangents[tangentIndex++] = tangent.y;
tangents[tangentIndex++] = tangent.z;
tangents[tangentIndex++] = tangent.x;
tangents[tangentIndex++] = tangent.y;
tangents[tangentIndex++] = tangent.z;
}
if (vertexFormat.bitangent) {
bitangent = Cartographic.Cartesian3.normalize(Cartographic.Cartesian3.cross(normal, tangent, bitangent), bitangent);
bitangents[bitangentIndex++] = bitangent.x;
bitangents[bitangentIndex++] = bitangent.y;
bitangents[bitangentIndex++] = bitangent.z;
bitangents[bitangentIndex++] = bitangent.x;
bitangents[bitangentIndex++] = bitangent.y;
bitangents[bitangentIndex++] = bitangent.z;
}
}
}
for (i = 0; i < slices; i++) {
if (vertexFormat.normal) {
normals[normalIndex++] = 0;
normals[normalIndex++] = 0;
normals[normalIndex++] = -1;
}
if (vertexFormat.tangent) {
tangents[tangentIndex++] = 1;
tangents[tangentIndex++] = 0;
tangents[tangentIndex++] = 0;
}
if (vertexFormat.bitangent) {
bitangents[bitangentIndex++] = 0;
bitangents[bitangentIndex++] = -1;
bitangents[bitangentIndex++] = 0;
}
}
for (i = 0; i < slices; i++) {
if (vertexFormat.normal) {
normals[normalIndex++] = 0;
normals[normalIndex++] = 0;
normals[normalIndex++] = 1;
}
if (vertexFormat.tangent) {
tangents[tangentIndex++] = 1;
tangents[tangentIndex++] = 0;
tangents[tangentIndex++] = 0;
}
if (vertexFormat.bitangent) {
bitangents[bitangentIndex++] = 0;
bitangents[bitangentIndex++] = 1;
bitangents[bitangentIndex++] = 0;
}
}
}
var numIndices = 12 * slices - 12;
var indices = IndexDatatype.IndexDatatype.createTypedArray(numVertices, numIndices);
var index = 0;
var j = 0;
for (i = 0; i < slices - 1; i++) {
indices[index++] = j;
indices[index++] = j + 2;
indices[index++] = j + 3;
indices[index++] = j;
indices[index++] = j + 3;
indices[index++] = j + 1;
j += 2;
}
indices[index++] = twoSlices - 2;
indices[index++] = 0;
indices[index++] = 1;
indices[index++] = twoSlices - 2;
indices[index++] = 1;
indices[index++] = twoSlices - 1;
for (i = 1; i < slices - 1; i++) {
indices[index++] = twoSlices + i + 1;
indices[index++] = twoSlices + i;
indices[index++] = twoSlices;
}
for (i = 1; i < slices - 1; i++) {
indices[index++] = threeSlices;
indices[index++] = threeSlices + i;
indices[index++] = threeSlices + i + 1;
}
var textureCoordIndex = 0;
if (vertexFormat.st) {
var rad = Math.max(topRadius, bottomRadius);
for (i = 0; i < numVertices; i++) {
var position = Cartographic.Cartesian3.fromArray(positions, i * 3, positionScratch);
st[textureCoordIndex++] = (position.x + rad) / (2.0 * rad);
st[textureCoordIndex++] = (position.y + rad) / (2.0 * rad);
}
}
var attributes = new GeometryAttributes.GeometryAttributes();
if (vertexFormat.position) {
attributes.position = new GeometryAttribute.GeometryAttribute({
componentDatatype: ComponentDatatype.ComponentDatatype.DOUBLE,
componentsPerAttribute: 3,
values: positions
});
}
if (vertexFormat.normal) {
attributes.normal = new GeometryAttribute.GeometryAttribute({
componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
componentsPerAttribute : 3,
values : normals
});
}
if (vertexFormat.tangent) {
attributes.tangent = new GeometryAttribute.GeometryAttribute({
componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
componentsPerAttribute : 3,
values : tangents
});
}
if (vertexFormat.bitangent) {
attributes.bitangent = new GeometryAttribute.GeometryAttribute({
componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
componentsPerAttribute : 3,
values : bitangents
});
}
if (vertexFormat.st) {
attributes.st = new GeometryAttribute.GeometryAttribute({
componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
componentsPerAttribute : 2,
values : st
});
}
radiusScratch.x = length * 0.5;
radiusScratch.y = Math.max(bottomRadius, topRadius);
var boundingSphere = new BoundingSphere.BoundingSphere(Cartographic.Cartesian3.ZERO, Cartesian2.Cartesian2.magnitude(radiusScratch));
if (when.defined(cylinderGeometry._offsetAttribute)) {
length = positions.length;
var applyOffset = new Uint8Array(length / 3);
var offsetValue = cylinderGeometry._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 : boundingSphere,
offsetAttribute : cylinderGeometry._offsetAttribute
});
};
var unitCylinderGeometry;
/**
* Returns the geometric representation of a unit cylinder, including its vertices, indices, and a bounding sphere.
* @returns {Geometry} The computed vertices and indices.
*
* @private
*/
CylinderGeometry.getUnitCylinder = function() {
if (!when.defined(unitCylinderGeometry)) {
unitCylinderGeometry = CylinderGeometry.createGeometry(new CylinderGeometry({
topRadius : 1.0,
bottomRadius : 1.0,
length : 1.0,
vertexFormat : VertexFormat.VertexFormat.POSITION_ONLY
}));
}
return unitCylinderGeometry;
};
exports.CylinderGeometry = CylinderGeometry;
});