/**
|
* 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', './Matrix2-91d5b6af', './RuntimeError-346a3079', './OrientedBoundingBox-79e3c3fe'], (function (exports, Matrix2, RuntimeError, OrientedBoundingBox) { 'use strict';
|
|
/**
|
* @private
|
*/
|
var CoplanarPolygonGeometryLibrary = {};
|
|
var scratchIntersectionPoint = new Matrix2.Cartesian3();
|
var scratchXAxis = new Matrix2.Cartesian3();
|
var scratchYAxis = new Matrix2.Cartesian3();
|
var scratchZAxis = new Matrix2.Cartesian3();
|
var obbScratch = new OrientedBoundingBox.OrientedBoundingBox();
|
|
CoplanarPolygonGeometryLibrary.validOutline = function (positions) {
|
//>>includeStart('debug', pragmas.debug);
|
RuntimeError.Check.defined("positions", positions);
|
//>>includeEnd('debug');
|
|
var orientedBoundingBox = OrientedBoundingBox.OrientedBoundingBox.fromPoints(
|
positions,
|
obbScratch
|
);
|
var halfAxes = orientedBoundingBox.halfAxes;
|
var xAxis = Matrix2.Matrix3.getColumn(halfAxes, 0, scratchXAxis);
|
var yAxis = Matrix2.Matrix3.getColumn(halfAxes, 1, scratchYAxis);
|
var zAxis = Matrix2.Matrix3.getColumn(halfAxes, 2, scratchZAxis);
|
|
var xMag = Matrix2.Cartesian3.magnitude(xAxis);
|
var yMag = Matrix2.Cartesian3.magnitude(yAxis);
|
var zMag = Matrix2.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);
|
RuntimeError.Check.defined("positions", positions);
|
RuntimeError.Check.defined("centerResult", centerResult);
|
RuntimeError.Check.defined("planeAxis1Result", planeAxis1Result);
|
RuntimeError.Check.defined("planeAxis2Result", planeAxis2Result);
|
//>>includeEnd('debug');
|
|
var orientedBoundingBox = OrientedBoundingBox.OrientedBoundingBox.fromPoints(
|
positions,
|
obbScratch
|
);
|
var halfAxes = orientedBoundingBox.halfAxes;
|
var xAxis = Matrix2.Matrix3.getColumn(halfAxes, 0, scratchXAxis);
|
var yAxis = Matrix2.Matrix3.getColumn(halfAxes, 1, scratchYAxis);
|
var zAxis = Matrix2.Matrix3.getColumn(halfAxes, 2, scratchZAxis);
|
|
var xMag = Matrix2.Cartesian3.magnitude(xAxis);
|
var yMag = Matrix2.Cartesian3.magnitude(yAxis);
|
var zMag = Matrix2.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;
|
}
|
|
Matrix2.Cartesian3.normalize(planeAxis1, planeAxis1Result);
|
Matrix2.Cartesian3.normalize(planeAxis2, planeAxis2Result);
|
Matrix2.Cartesian3.clone(orientedBoundingBox.center, centerResult);
|
return true;
|
};
|
|
function projectTo2D(position, center, axis1, axis2, result) {
|
var v = Matrix2.Cartesian3.subtract(position, center, scratchIntersectionPoint);
|
var x = Matrix2.Cartesian3.dot(axis1, v);
|
var y = Matrix2.Cartesian3.dot(axis2, v);
|
|
return Matrix2.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;
|
|
}));
|
//# sourceMappingURL=CoplanarPolygonGeometryLibrary-bddbb12e.js.map
|
