qd-changjing/public/static/Build/CesiumUnminified/Workers/PolylinePipeline-b9913663.js

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/**
* 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/main/LICENSE.md for full licensing details.
*/
define(['exports', './Matrix2-265d9610', './when-4bbc8319', './RuntimeError-5b082e8f', './EllipsoidGeodesic-ed024f16', './EllipsoidRhumbLine-d09d563f', './IntersectionTests-596e31ec', './ComponentDatatype-aad54330', './Plane-616c9c0a'], (function (exports, Matrix2, when, RuntimeError, EllipsoidGeodesic, EllipsoidRhumbLine, IntersectionTests, ComponentDatatype, Plane) { 'use strict';
/**
* @private
*/
const PolylinePipeline = {};
PolylinePipeline.numberOfPoints = function (p0, p1, minDistance) {
const distance = Matrix2.Cartesian3.distance(p0, p1);
return Math.ceil(distance / minDistance);
};
PolylinePipeline.numberOfPointsRhumbLine = function (p0, p1, granularity) {
const radiansDistanceSquared =
Math.pow(p0.longitude - p1.longitude, 2) +
Math.pow(p0.latitude - p1.latitude, 2);
return Math.max(
1,
Math.ceil(Math.sqrt(radiansDistanceSquared / (granularity * granularity)))
);
};
const cartoScratch = new Matrix2.Cartographic();
PolylinePipeline.extractHeights = function (positions, ellipsoid) {
const length = positions.length;
const heights = new Array(length);
for (let i = 0; i < length; i++) {
const p = positions[i];
heights[i] = ellipsoid.cartesianToCartographic(p, cartoScratch).height;
}
return heights;
};
const wrapLongitudeInversMatrix = new Matrix2.Matrix4();
const wrapLongitudeOrigin = new Matrix2.Cartesian3();
const wrapLongitudeXZNormal = new Matrix2.Cartesian3();
const wrapLongitudeXZPlane = new Plane.Plane(Matrix2.Cartesian3.UNIT_X, 0.0);
const wrapLongitudeYZNormal = new Matrix2.Cartesian3();
const wrapLongitudeYZPlane = new Plane.Plane(Matrix2.Cartesian3.UNIT_X, 0.0);
const wrapLongitudeIntersection = new Matrix2.Cartesian3();
const wrapLongitudeOffset = new Matrix2.Cartesian3();
const subdivideHeightsScratchArray = [];
function subdivideHeights(numPoints, h0, h1) {
const heights = subdivideHeightsScratchArray;
heights.length = numPoints;
let i;
if (h0 === h1) {
for (i = 0; i < numPoints; i++) {
heights[i] = h0;
}
return heights;
}
const dHeight = h1 - h0;
const heightPerVertex = dHeight / numPoints;
for (i = 0; i < numPoints; i++) {
const h = h0 + i * heightPerVertex;
heights[i] = h;
}
return heights;
}
const carto1 = new Matrix2.Cartographic();
const carto2 = new Matrix2.Cartographic();
const cartesian = new Matrix2.Cartesian3();
const scaleFirst = new Matrix2.Cartesian3();
const scaleLast = new Matrix2.Cartesian3();
const ellipsoidGeodesic = new EllipsoidGeodesic.EllipsoidGeodesic();
let ellipsoidRhumb = new EllipsoidRhumbLine.EllipsoidRhumbLine();
//Returns subdivided line scaled to ellipsoid surface starting at p1 and ending at p2.
//Result includes p1, but not include p2. This function is called for a sequence of line segments,
//and this prevents duplication of end point.
function generateCartesianArc(
p0,
p1,
minDistance,
ellipsoid,
h0,
h1,
array,
offset
) {
const first = ellipsoid.scaleToGeodeticSurface(p0, scaleFirst);
const last = ellipsoid.scaleToGeodeticSurface(p1, scaleLast);
const numPoints = PolylinePipeline.numberOfPoints(p0, p1, minDistance);
const start = ellipsoid.cartesianToCartographic(first, carto1);
const end = ellipsoid.cartesianToCartographic(last, carto2);
const heights = subdivideHeights(numPoints, h0, h1);
ellipsoidGeodesic.setEndPoints(start, end);
const surfaceDistanceBetweenPoints =
ellipsoidGeodesic.surfaceDistance / numPoints;
let index = offset;
start.height = h0;
let cart = ellipsoid.cartographicToCartesian(start, cartesian);
Matrix2.Cartesian3.pack(cart, array, index);
index += 3;
for (let i = 1; i < numPoints; i++) {
const carto = ellipsoidGeodesic.interpolateUsingSurfaceDistance(
i * surfaceDistanceBetweenPoints,
carto2
);
carto.height = heights[i];
cart = ellipsoid.cartographicToCartesian(carto, cartesian);
Matrix2.Cartesian3.pack(cart, array, index);
index += 3;
}
return index;
}
//Returns subdivided line scaled to ellipsoid surface starting at p1 and ending at p2.
//Result includes p1, but not include p2. This function is called for a sequence of line segments,
//and this prevents duplication of end point.
function generateCartesianRhumbArc(
p0,
p1,
granularity,
ellipsoid,
h0,
h1,
array,
offset
) {
const start = ellipsoid.cartesianToCartographic(p0, carto1);
const end = ellipsoid.cartesianToCartographic(p1, carto2);
const numPoints = PolylinePipeline.numberOfPointsRhumbLine(
start,
end,
granularity
);
start.height = 0.0;
end.height = 0.0;
const heights = subdivideHeights(numPoints, h0, h1);
if (!ellipsoidRhumb.ellipsoid.equals(ellipsoid)) {
ellipsoidRhumb = new EllipsoidRhumbLine.EllipsoidRhumbLine(undefined, undefined, ellipsoid);
}
ellipsoidRhumb.setEndPoints(start, end);
const surfaceDistanceBetweenPoints =
ellipsoidRhumb.surfaceDistance / numPoints;
let index = offset;
start.height = h0;
let cart = ellipsoid.cartographicToCartesian(start, cartesian);
Matrix2.Cartesian3.pack(cart, array, index);
index += 3;
for (let i = 1; i < numPoints; i++) {
const carto = ellipsoidRhumb.interpolateUsingSurfaceDistance(
i * surfaceDistanceBetweenPoints,
carto2
);
carto.height = heights[i];
cart = ellipsoid.cartographicToCartesian(carto, cartesian);
Matrix2.Cartesian3.pack(cart, array, index);
index += 3;
}
return index;
}
/**
* Breaks a {@link Polyline} into segments such that it does not cross the &plusmn;180 degree meridian of an ellipsoid.
*
* @param {Cartesian3[]} positions The polyline's Cartesian positions.
* @param {Matrix4} [modelMatrix=Matrix4.IDENTITY] The polyline's model matrix. Assumed to be an affine
* transformation matrix, where the upper left 3x3 elements are a rotation matrix, and
* the upper three elements in the fourth column are the translation. The bottom row is assumed to be [0, 0, 0, 1].
* The matrix is not verified to be in the proper form.
* @returns {Object} An object with a <code>positions</code> property that is an array of positions and a
* <code>segments</code> property.
*
*
* @example
* const polylines = new Cesium.PolylineCollection();
* const polyline = polylines.add(...);
* const positions = polyline.positions;
* const modelMatrix = polylines.modelMatrix;
* const segments = Cesium.PolylinePipeline.wrapLongitude(positions, modelMatrix);
*
* @see PolygonPipeline.wrapLongitude
* @see Polyline
* @see PolylineCollection
*/
PolylinePipeline.wrapLongitude = function (positions, modelMatrix) {
const cartesians = [];
const segments = [];
if (when.defined(positions) && positions.length > 0) {
modelMatrix = when.defaultValue(modelMatrix, Matrix2.Matrix4.IDENTITY);
const inverseModelMatrix = Matrix2.Matrix4.inverseTransformation(
modelMatrix,
wrapLongitudeInversMatrix
);
const origin = Matrix2.Matrix4.multiplyByPoint(
inverseModelMatrix,
Matrix2.Cartesian3.ZERO,
wrapLongitudeOrigin
);
const xzNormal = Matrix2.Cartesian3.normalize(
Matrix2.Matrix4.multiplyByPointAsVector(
inverseModelMatrix,
Matrix2.Cartesian3.UNIT_Y,
wrapLongitudeXZNormal
),
wrapLongitudeXZNormal
);
const xzPlane = Plane.Plane.fromPointNormal(
origin,
xzNormal,
wrapLongitudeXZPlane
);
const yzNormal = Matrix2.Cartesian3.normalize(
Matrix2.Matrix4.multiplyByPointAsVector(
inverseModelMatrix,
Matrix2.Cartesian3.UNIT_X,
wrapLongitudeYZNormal
),
wrapLongitudeYZNormal
);
const yzPlane = Plane.Plane.fromPointNormal(
origin,
yzNormal,
wrapLongitudeYZPlane
);
let count = 1;
cartesians.push(Matrix2.Cartesian3.clone(positions[0]));
let prev = cartesians[0];
const length = positions.length;
for (let i = 1; i < length; ++i) {
const cur = positions[i];
// intersects the IDL if either endpoint is on the negative side of the yz-plane
if (
Plane.Plane.getPointDistance(yzPlane, prev) < 0.0 ||
Plane.Plane.getPointDistance(yzPlane, cur) < 0.0
) {
// and intersects the xz-plane
const intersection = IntersectionTests.IntersectionTests.lineSegmentPlane(
prev,
cur,
xzPlane,
wrapLongitudeIntersection
);
if (when.defined(intersection)) {
// move point on the xz-plane slightly away from the plane
const offset = Matrix2.Cartesian3.multiplyByScalar(
xzNormal,
5.0e-9,
wrapLongitudeOffset
);
if (Plane.Plane.getPointDistance(xzPlane, prev) < 0.0) {
Matrix2.Cartesian3.negate(offset, offset);
}
cartesians.push(
Matrix2.Cartesian3.add(intersection, offset, new Matrix2.Cartesian3())
);
segments.push(count + 1);
Matrix2.Cartesian3.negate(offset, offset);
cartesians.push(
Matrix2.Cartesian3.add(intersection, offset, new Matrix2.Cartesian3())
);
count = 1;
}
}
cartesians.push(Matrix2.Cartesian3.clone(positions[i]));
count++;
prev = cur;
}
segments.push(count);
}
return {
positions: cartesians,
lengths: segments,
};
};
/**
* Subdivides polyline and raises all points to the specified height. Returns an array of numbers to represent the positions.
* @param {Object} options Object with the following properties:
* @param {Cartesian3[]} options.positions The array of type {Cartesian3} representing positions.
* @param {Number|Number[]} [options.height=0.0] A number or array of numbers representing the heights of each position.
* @param {Number} [options.granularity = CesiumMath.RADIANS_PER_DEGREE] The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the positions lie.
* @returns {Number[]} A new array of positions of type {Number} that have been subdivided and raised to the surface of the ellipsoid.
*
* @example
* const positions = Cesium.Cartesian3.fromDegreesArray([
* -105.0, 40.0,
* -100.0, 38.0,
* -105.0, 35.0,
* -100.0, 32.0
* ]);
* const surfacePositions = Cesium.PolylinePipeline.generateArc({
* positons: positions
* });
*/
PolylinePipeline.generateArc = function (options) {
if (!when.defined(options)) {
options = {};
}
const positions = options.positions;
//>>includeStart('debug', pragmas.debug);
if (!when.defined(positions)) {
throw new RuntimeError.DeveloperError("options.positions is required.");
}
//>>includeEnd('debug');
const length = positions.length;
const ellipsoid = when.defaultValue(options.ellipsoid, Matrix2.Ellipsoid.WGS84);
let height = when.defaultValue(options.height, 0);
const hasHeightArray = Array.isArray(height);
if (length < 1) {
return [];
} else if (length === 1) {
const p = ellipsoid.scaleToGeodeticSurface(positions[0], scaleFirst);
height = hasHeightArray ? height[0] : height;
if (height !== 0) {
const n = ellipsoid.geodeticSurfaceNormal(p, cartesian);
Matrix2.Cartesian3.multiplyByScalar(n, height, n);
Matrix2.Cartesian3.add(p, n, p);
}
return [p.x, p.y, p.z];
}
let minDistance = options.minDistance;
if (!when.defined(minDistance)) {
const granularity = when.defaultValue(
options.granularity,
ComponentDatatype.CesiumMath.RADIANS_PER_DEGREE
);
minDistance = ComponentDatatype.CesiumMath.chordLength(granularity, ellipsoid.maximumRadius);
}
let numPoints = 0;
let i;
for (i = 0; i < length - 1; i++) {
numPoints += PolylinePipeline.numberOfPoints(
positions[i],
positions[i + 1],
minDistance
);
}
const arrayLength = (numPoints + 1) * 3;
const newPositions = new Array(arrayLength);
let offset = 0;
for (i = 0; i < length - 1; i++) {
const p0 = positions[i];
const p1 = positions[i + 1];
const h0 = hasHeightArray ? height[i] : height;
const h1 = hasHeightArray ? height[i + 1] : height;
offset = generateCartesianArc(
p0,
p1,
minDistance,
ellipsoid,
h0,
h1,
newPositions,
offset
);
}
subdivideHeightsScratchArray.length = 0;
const lastPoint = positions[length - 1];
const carto = ellipsoid.cartesianToCartographic(lastPoint, carto1);
carto.height = hasHeightArray ? height[length - 1] : height;
const cart = ellipsoid.cartographicToCartesian(carto, cartesian);
Matrix2.Cartesian3.pack(cart, newPositions, arrayLength - 3);
return newPositions;
};
const scratchCartographic0 = new Matrix2.Cartographic();
const scratchCartographic1 = new Matrix2.Cartographic();
/**
* Subdivides polyline and raises all points to the specified height using Rhumb lines. Returns an array of numbers to represent the positions.
* @param {Object} options Object with the following properties:
* @param {Cartesian3[]} options.positions The array of type {Cartesian3} representing positions.
* @param {Number|Number[]} [options.height=0.0] A number or array of numbers representing the heights of each position.
* @param {Number} [options.granularity = CesiumMath.RADIANS_PER_DEGREE] The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the positions lie.
* @returns {Number[]} A new array of positions of type {Number} that have been subdivided and raised to the surface of the ellipsoid.
*
* @example
* const positions = Cesium.Cartesian3.fromDegreesArray([
* -105.0, 40.0,
* -100.0, 38.0,
* -105.0, 35.0,
* -100.0, 32.0
* ]);
* const surfacePositions = Cesium.PolylinePipeline.generateRhumbArc({
* positons: positions
* });
*/
PolylinePipeline.generateRhumbArc = function (options) {
if (!when.defined(options)) {
options = {};
}
const positions = options.positions;
//>>includeStart('debug', pragmas.debug);
if (!when.defined(positions)) {
throw new RuntimeError.DeveloperError("options.positions is required.");
}
//>>includeEnd('debug');
const length = positions.length;
const ellipsoid = when.defaultValue(options.ellipsoid, Matrix2.Ellipsoid.WGS84);
let height = when.defaultValue(options.height, 0);
const hasHeightArray = Array.isArray(height);
if (length < 1) {
return [];
} else if (length === 1) {
const p = ellipsoid.scaleToGeodeticSurface(positions[0], scaleFirst);
height = hasHeightArray ? height[0] : height;
if (height !== 0) {
const n = ellipsoid.geodeticSurfaceNormal(p, cartesian);
Matrix2.Cartesian3.multiplyByScalar(n, height, n);
Matrix2.Cartesian3.add(p, n, p);
}
return [p.x, p.y, p.z];
}
const granularity = when.defaultValue(
options.granularity,
ComponentDatatype.CesiumMath.RADIANS_PER_DEGREE
);
let numPoints = 0;
let i;
let c0 = ellipsoid.cartesianToCartographic(
positions[0],
scratchCartographic0
);
let c1;
for (i = 0; i < length - 1; i++) {
c1 = ellipsoid.cartesianToCartographic(
positions[i + 1],
scratchCartographic1
);
numPoints += PolylinePipeline.numberOfPointsRhumbLine(c0, c1, granularity);
c0 = Matrix2.Cartographic.clone(c1, scratchCartographic0);
}
const arrayLength = (numPoints + 1) * 3;
const newPositions = new Array(arrayLength);
let offset = 0;
for (i = 0; i < length - 1; i++) {
const p0 = positions[i];
const p1 = positions[i + 1];
const h0 = hasHeightArray ? height[i] : height;
const h1 = hasHeightArray ? height[i + 1] : height;
offset = generateCartesianRhumbArc(
p0,
p1,
granularity,
ellipsoid,
h0,
h1,
newPositions,
offset
);
}
subdivideHeightsScratchArray.length = 0;
const lastPoint = positions[length - 1];
const carto = ellipsoid.cartesianToCartographic(lastPoint, carto1);
carto.height = hasHeightArray ? height[length - 1] : height;
const cart = ellipsoid.cartographicToCartesian(carto, cartesian);
Matrix2.Cartesian3.pack(cart, newPositions, arrayLength - 3);
return newPositions;
};
/**
* Subdivides polyline and raises all points to the specified height. Returns an array of new {Cartesian3} positions.
* @param {Object} options Object with the following properties:
* @param {Cartesian3[]} options.positions The array of type {Cartesian3} representing positions.
* @param {Number|Number[]} [options.height=0.0] A number or array of numbers representing the heights of each position.
* @param {Number} [options.granularity = CesiumMath.RADIANS_PER_DEGREE] The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the positions lie.
* @returns {Cartesian3[]} A new array of cartesian3 positions that have been subdivided and raised to the surface of the ellipsoid.
*
* @example
* const positions = Cesium.Cartesian3.fromDegreesArray([
* -105.0, 40.0,
* -100.0, 38.0,
* -105.0, 35.0,
* -100.0, 32.0
* ]);
* const surfacePositions = Cesium.PolylinePipeline.generateCartesianArc({
* positons: positions
* });
*/
PolylinePipeline.generateCartesianArc = function (options) {
const numberArray = PolylinePipeline.generateArc(options);
const size = numberArray.length / 3;
const newPositions = new Array(size);
for (let i = 0; i < size; i++) {
newPositions[i] = Matrix2.Cartesian3.unpack(numberArray, i * 3);
}
return newPositions;
};
/**
* Subdivides polyline and raises all points to the specified height using Rhumb Lines. Returns an array of new {Cartesian3} positions.
* @param {Object} options Object with the following properties:
* @param {Cartesian3[]} options.positions The array of type {Cartesian3} representing positions.
* @param {Number|Number[]} [options.height=0.0] A number or array of numbers representing the heights of each position.
* @param {Number} [options.granularity = CesiumMath.RADIANS_PER_DEGREE] The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the positions lie.
* @returns {Cartesian3[]} A new array of cartesian3 positions that have been subdivided and raised to the surface of the ellipsoid.
*
* @example
* const positions = Cesium.Cartesian3.fromDegreesArray([
* -105.0, 40.0,
* -100.0, 38.0,
* -105.0, 35.0,
* -100.0, 32.0
* ]);
* const surfacePositions = Cesium.PolylinePipeline.generateCartesianRhumbArc({
* positons: positions
* });
*/
PolylinePipeline.generateCartesianRhumbArc = function (options) {
const numberArray = PolylinePipeline.generateRhumbArc(options);
const size = numberArray.length / 3;
const newPositions = new Array(size);
for (let i = 0; i < size; i++) {
newPositions[i] = Matrix2.Cartesian3.unpack(numberArray, i * 3);
}
return newPositions;
};
exports.PolylinePipeline = PolylinePipeline;
}));
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