/**
|
* Cesium - https://github.com/AnalyticalGraphicsInc/cesium
|
*
|
* Copyright 2011-2017 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/AnalyticalGraphicsInc/cesium/blob/master/LICENSE.md for full licensing details.
|
*/
|
define(['exports', './when-8d13db60', './Math-61ede240', './Cartesian2-2cbe6c75', './EllipsoidTangentPlane-fe3014f8', './PolygonPipeline-4e2bb580', './PolylinePipeline-3f99899a'], function (exports, when, _Math, Cartesian2, EllipsoidTangentPlane, PolygonPipeline, PolylinePipeline) { 'use strict';
|
|
/**
|
* private
|
*/
|
var WallGeometryLibrary = {};
|
|
function latLonEquals(c0, c1) {
|
return ((_Math.CesiumMath.equalsEpsilon(c0.latitude, c1.latitude, _Math.CesiumMath.EPSILON14)) && (_Math.CesiumMath.equalsEpsilon(c0.longitude, c1.longitude, _Math.CesiumMath.EPSILON14)));
|
}
|
|
var scratchCartographic1 = new Cartesian2.Cartographic();
|
var scratchCartographic2 = new Cartesian2.Cartographic();
|
function removeDuplicates(ellipsoid, positions, topHeights, bottomHeights) {
|
var length = positions.length;
|
if (length < 2) {
|
return;
|
}
|
|
var hasBottomHeights = when.defined(bottomHeights);
|
var hasTopHeights = when.defined(topHeights);
|
var hasAllZeroHeights = true;
|
|
var cleanedPositions = new Array(length);
|
var cleanedTopHeights = new Array(length);
|
var cleanedBottomHeights = new Array(length);
|
|
var v0 = positions[0];
|
cleanedPositions[0] = v0;
|
|
var c0 = ellipsoid.cartesianToCartographic(v0, scratchCartographic1);
|
if (hasTopHeights) {
|
c0.height = topHeights[0];
|
}
|
|
hasAllZeroHeights = hasAllZeroHeights && c0.height <= 0;
|
|
cleanedTopHeights[0] = c0.height;
|
|
if (hasBottomHeights) {
|
cleanedBottomHeights[0] = bottomHeights[0];
|
} else {
|
cleanedBottomHeights[0] = 0.0;
|
}
|
|
var index = 1;
|
for (var i = 1; i < length; ++i) {
|
var v1 = positions[i];
|
var c1 = ellipsoid.cartesianToCartographic(v1, scratchCartographic2);
|
if (hasTopHeights) {
|
c1.height = topHeights[i];
|
}
|
hasAllZeroHeights = hasAllZeroHeights && c1.height <= 0;
|
|
if (!latLonEquals(c0, c1)) {
|
cleanedPositions[index] = v1; // Shallow copy!
|
cleanedTopHeights[index] = c1.height;
|
|
if (hasBottomHeights) {
|
cleanedBottomHeights[index] = bottomHeights[i];
|
} else {
|
cleanedBottomHeights[index] = 0.0;
|
}
|
|
Cartesian2.Cartographic.clone(c1, c0);
|
++index;
|
} else if (c0.height < c1.height) {
|
cleanedTopHeights[index - 1] = c1.height;
|
}
|
}
|
|
if (hasAllZeroHeights || index < 2) {
|
return;
|
}
|
|
cleanedPositions.length = index;
|
cleanedTopHeights.length = index;
|
cleanedBottomHeights.length = index;
|
|
return {
|
positions: cleanedPositions,
|
topHeights: cleanedTopHeights,
|
bottomHeights: cleanedBottomHeights
|
};
|
}
|
|
var positionsArrayScratch = new Array(2);
|
var heightsArrayScratch = new Array(2);
|
var generateArcOptionsScratch = {
|
positions : undefined,
|
height : undefined,
|
granularity : undefined,
|
ellipsoid : undefined
|
};
|
|
/**
|
* @private
|
*/
|
WallGeometryLibrary.computePositions = function(ellipsoid, wallPositions, maximumHeights, minimumHeights, granularity, duplicateCorners) {
|
var o = removeDuplicates(ellipsoid, wallPositions, maximumHeights, minimumHeights);
|
|
if (!when.defined(o)) {
|
return;
|
}
|
|
wallPositions = o.positions;
|
maximumHeights = o.topHeights;
|
minimumHeights = o.bottomHeights;
|
|
if (wallPositions.length >= 3) {
|
// Order positions counter-clockwise
|
var tangentPlane = EllipsoidTangentPlane.EllipsoidTangentPlane.fromPoints(wallPositions, ellipsoid);
|
var positions2D = tangentPlane.projectPointsOntoPlane(wallPositions);
|
|
if (PolygonPipeline.PolygonPipeline.computeWindingOrder2D(positions2D) === PolygonPipeline.WindingOrder.CLOCKWISE) {
|
wallPositions.reverse();
|
maximumHeights.reverse();
|
minimumHeights.reverse();
|
}
|
}
|
|
var length = wallPositions.length;
|
var numCorners = length - 2;
|
var topPositions;
|
var bottomPositions;
|
|
var minDistance = _Math.CesiumMath.chordLength(granularity, ellipsoid.maximumRadius);
|
|
var generateArcOptions = generateArcOptionsScratch;
|
generateArcOptions.minDistance = minDistance;
|
generateArcOptions.ellipsoid = ellipsoid;
|
|
if (duplicateCorners) {
|
var count = 0;
|
var i;
|
|
for (i = 0; i < length - 1; i++) {
|
count += PolylinePipeline.PolylinePipeline.numberOfPoints(wallPositions[i], wallPositions[i+1], minDistance) + 1;
|
}
|
|
topPositions = new Float64Array(count * 3);
|
bottomPositions = new Float64Array(count * 3);
|
|
var generateArcPositions = positionsArrayScratch;
|
var generateArcHeights = heightsArrayScratch;
|
generateArcOptions.positions = generateArcPositions;
|
generateArcOptions.height = generateArcHeights;
|
|
var offset = 0;
|
for (i = 0; i < length - 1; i++) {
|
generateArcPositions[0] = wallPositions[i];
|
generateArcPositions[1] = wallPositions[i + 1];
|
|
generateArcHeights[0] = maximumHeights[i];
|
generateArcHeights[1] = maximumHeights[i + 1];
|
|
var pos = PolylinePipeline.PolylinePipeline.generateArc(generateArcOptions);
|
topPositions.set(pos, offset);
|
|
generateArcHeights[0] = minimumHeights[i];
|
generateArcHeights[1] = minimumHeights[i + 1];
|
|
bottomPositions.set(PolylinePipeline.PolylinePipeline.generateArc(generateArcOptions), offset);
|
|
offset += pos.length;
|
}
|
} else {
|
generateArcOptions.positions = wallPositions;
|
generateArcOptions.height = maximumHeights;
|
topPositions = new Float64Array(PolylinePipeline.PolylinePipeline.generateArc(generateArcOptions));
|
|
generateArcOptions.height = minimumHeights;
|
bottomPositions = new Float64Array(PolylinePipeline.PolylinePipeline.generateArc(generateArcOptions));
|
}
|
|
return {
|
bottomPositions: bottomPositions,
|
topPositions: topPositions,
|
numCorners: numCorners
|
};
|
};
|
|
exports.WallGeometryLibrary = WallGeometryLibrary;
|
|
});
|
