Agriculture-front-end/public/Cesium/Workers/CoplanarPolygonGeometryLibrary-81d1880f.js
2023-04-16 22:33:44 +08:00

129 lines
5.7 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', './Check-70bec281', './Cartographic-fe4be337', './Cartesian2-85064f09', './BoundingSphere-775c5788', './OrientedBoundingBox-0ede1598'], function (exports, Check, Cartographic, Cartesian2, BoundingSphere, OrientedBoundingBox) { 'use strict';
/**
* @private
*/
var CoplanarPolygonGeometryLibrary = {};
var scratchIntersectionPoint = new Cartographic.Cartesian3();
var scratchXAxis = new Cartographic.Cartesian3();
var scratchYAxis = new Cartographic.Cartesian3();
var scratchZAxis = new Cartographic.Cartesian3();
var obbScratch = new OrientedBoundingBox.OrientedBoundingBox();
CoplanarPolygonGeometryLibrary.validOutline = function(positions) {
//>>includeStart('debug', pragmas.debug);
Check.Check.defined('positions', positions);
//>>includeEnd('debug');
var orientedBoundingBox = OrientedBoundingBox.OrientedBoundingBox.fromPoints(positions, obbScratch);
var halfAxes = orientedBoundingBox.halfAxes;
var xAxis = BoundingSphere.Matrix3.getColumn(halfAxes, 0, scratchXAxis);
var yAxis = BoundingSphere.Matrix3.getColumn(halfAxes, 1, scratchYAxis);
var zAxis = BoundingSphere.Matrix3.getColumn(halfAxes, 2, scratchZAxis);
var xMag = Cartographic.Cartesian3.magnitude(xAxis);
var yMag = Cartographic.Cartesian3.magnitude(yAxis);
var zMag = Cartographic.Cartesian3.magnitude(zAxis);
// If all the points are on a line return undefined because we can't draw a polygon
return !((xMag === 0 && (yMag === 0 || zMag === 0)) || (yMag === 0 && zMag === 0));
};
// call after removeDuplicates
CoplanarPolygonGeometryLibrary.computeProjectTo2DArguments = function(positions, centerResult, planeAxis1Result, planeAxis2Result) {
//>>includeStart('debug', pragmas.debug);
Check.Check.defined('positions', positions);
Check.Check.defined('centerResult', centerResult);
Check.Check.defined('planeAxis1Result', planeAxis1Result);
Check.Check.defined('planeAxis2Result', planeAxis2Result);
//>>includeEnd('debug');
var orientedBoundingBox = OrientedBoundingBox.OrientedBoundingBox.fromPoints(positions, obbScratch);
var halfAxes = orientedBoundingBox.halfAxes;
var xAxis = BoundingSphere.Matrix3.getColumn(halfAxes, 0, scratchXAxis);
var yAxis = BoundingSphere.Matrix3.getColumn(halfAxes, 1, scratchYAxis);
var zAxis = BoundingSphere.Matrix3.getColumn(halfAxes, 2, scratchZAxis);
var xMag = Cartographic.Cartesian3.magnitude(xAxis);
var yMag = Cartographic.Cartesian3.magnitude(yAxis);
var zMag = Cartographic.Cartesian3.magnitude(zAxis);
var min = Math.min(xMag, yMag, zMag);
// If all the points are on a line return undefined because we can't draw a polygon
if ((xMag === 0 && (yMag === 0 || zMag === 0)) || (yMag === 0 && zMag === 0)) {
return false;
}
var planeAxis1;
var planeAxis2;
if (min === yMag || min === zMag) {
planeAxis1 = xAxis;
}
if (min === xMag) {
planeAxis1 = yAxis;
} else if (min === zMag) {
planeAxis2 = yAxis;
}
if (min === xMag || min === yMag) {
planeAxis2 = zAxis;
}
Cartographic.Cartesian3.normalize(planeAxis1, planeAxis1Result);
Cartographic.Cartesian3.normalize(planeAxis2, planeAxis2Result);
Cartographic.Cartesian3.clone(orientedBoundingBox.center, centerResult);
return true;
};
function projectTo2D(position, center, axis1, axis2, result) {
var v = Cartographic.Cartesian3.subtract(position, center, scratchIntersectionPoint);
var x = Cartographic.Cartesian3.dot(axis1, v);
var y = Cartographic.Cartesian3.dot(axis2, v);
return Cartesian2.Cartesian2.fromElements(x, y, result);
}
CoplanarPolygonGeometryLibrary.createProjectPointsTo2DFunction = function(center, axis1, axis2) {
return function(positions) {
var positionResults = new Array(positions.length);
for (var i = 0; i < positions.length; i++) {
positionResults[i] = projectTo2D(positions[i], center, axis1, axis2);
}
return positionResults;
};
};
CoplanarPolygonGeometryLibrary.createProjectPointTo2DFunction = function(center, axis1, axis2) {
return function(position, result) {
return projectTo2D(position, center, axis1, axis2, result);
};
};
exports.CoplanarPolygonGeometryLibrary = CoplanarPolygonGeometryLibrary;
});