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158 lines
5.2 KiB
158 lines
5.2 KiB
/**
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* @license
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* Cesium - https://github.com/CesiumGS/cesium
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* Version 1.99
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*
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* Copyright 2011-2022 Cesium Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Columbus View (Pat. Pend.)
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*
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* Portions licensed separately.
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* See https://github.com/CesiumGS/cesium/blob/main/LICENSE.md for full licensing details.
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*/
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define(['exports', './Matrix2-f9f1b94b', './Matrix3-ea964448', './Check-40d84a28', './OrientedBoundingBox-14c97a6c'], (function (exports, Matrix2, Matrix3, Check, OrientedBoundingBox) { 'use strict';
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/**
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* @private
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*/
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const CoplanarPolygonGeometryLibrary = {};
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const scratchIntersectionPoint = new Matrix3.Cartesian3();
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const scratchXAxis = new Matrix3.Cartesian3();
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const scratchYAxis = new Matrix3.Cartesian3();
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const scratchZAxis = new Matrix3.Cartesian3();
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const obbScratch = new OrientedBoundingBox.OrientedBoundingBox();
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CoplanarPolygonGeometryLibrary.validOutline = function (positions) {
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//>>includeStart('debug', pragmas.debug);
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Check.Check.defined("positions", positions);
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//>>includeEnd('debug');
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const orientedBoundingBox = OrientedBoundingBox.OrientedBoundingBox.fromPoints(
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positions,
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obbScratch
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);
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const halfAxes = orientedBoundingBox.halfAxes;
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const xAxis = Matrix3.Matrix3.getColumn(halfAxes, 0, scratchXAxis);
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const yAxis = Matrix3.Matrix3.getColumn(halfAxes, 1, scratchYAxis);
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const zAxis = Matrix3.Matrix3.getColumn(halfAxes, 2, scratchZAxis);
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const xMag = Matrix3.Cartesian3.magnitude(xAxis);
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const yMag = Matrix3.Cartesian3.magnitude(yAxis);
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const zMag = Matrix3.Cartesian3.magnitude(zAxis);
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// If all the points are on a line return undefined because we can't draw a polygon
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return !(
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(xMag === 0 && (yMag === 0 || zMag === 0)) ||
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(yMag === 0 && zMag === 0)
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);
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};
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// call after removeDuplicates
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CoplanarPolygonGeometryLibrary.computeProjectTo2DArguments = function (
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positions,
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centerResult,
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planeAxis1Result,
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planeAxis2Result
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) {
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//>>includeStart('debug', pragmas.debug);
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Check.Check.defined("positions", positions);
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Check.Check.defined("centerResult", centerResult);
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Check.Check.defined("planeAxis1Result", planeAxis1Result);
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Check.Check.defined("planeAxis2Result", planeAxis2Result);
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//>>includeEnd('debug');
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const orientedBoundingBox = OrientedBoundingBox.OrientedBoundingBox.fromPoints(
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positions,
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obbScratch
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);
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const halfAxes = orientedBoundingBox.halfAxes;
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const xAxis = Matrix3.Matrix3.getColumn(halfAxes, 0, scratchXAxis);
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const yAxis = Matrix3.Matrix3.getColumn(halfAxes, 1, scratchYAxis);
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const zAxis = Matrix3.Matrix3.getColumn(halfAxes, 2, scratchZAxis);
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const xMag = Matrix3.Cartesian3.magnitude(xAxis);
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const yMag = Matrix3.Cartesian3.magnitude(yAxis);
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const zMag = Matrix3.Cartesian3.magnitude(zAxis);
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const min = Math.min(xMag, yMag, zMag);
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// If all the points are on a line return undefined because we can't draw a polygon
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if (
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(xMag === 0 && (yMag === 0 || zMag === 0)) ||
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(yMag === 0 && zMag === 0)
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) {
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return false;
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}
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let planeAxis1;
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let planeAxis2;
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if (min === yMag || min === zMag) {
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planeAxis1 = xAxis;
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}
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if (min === xMag) {
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planeAxis1 = yAxis;
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} else if (min === zMag) {
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planeAxis2 = yAxis;
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}
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if (min === xMag || min === yMag) {
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planeAxis2 = zAxis;
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}
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Matrix3.Cartesian3.normalize(planeAxis1, planeAxis1Result);
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Matrix3.Cartesian3.normalize(planeAxis2, planeAxis2Result);
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Matrix3.Cartesian3.clone(orientedBoundingBox.center, centerResult);
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return true;
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};
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function projectTo2D(position, center, axis1, axis2, result) {
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const v = Matrix3.Cartesian3.subtract(position, center, scratchIntersectionPoint);
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const x = Matrix3.Cartesian3.dot(axis1, v);
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const y = Matrix3.Cartesian3.dot(axis2, v);
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return Matrix2.Cartesian2.fromElements(x, y, result);
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}
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CoplanarPolygonGeometryLibrary.createProjectPointsTo2DFunction = function (
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center,
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axis1,
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axis2
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) {
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return function (positions) {
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const positionResults = new Array(positions.length);
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for (let i = 0; i < positions.length; i++) {
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positionResults[i] = projectTo2D(positions[i], center, axis1, axis2);
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}
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return positionResults;
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};
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};
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CoplanarPolygonGeometryLibrary.createProjectPointTo2DFunction = function (
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center,
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axis1,
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axis2
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) {
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return function (position, result) {
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return projectTo2D(position, center, axis1, axis2, result);
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};
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};
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var CoplanarPolygonGeometryLibrary$1 = CoplanarPolygonGeometryLibrary;
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exports.CoplanarPolygonGeometryLibrary = CoplanarPolygonGeometryLibrary$1;
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}));
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