/**
|
* 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(['./when-8d13db60', './Check-70bec281', './Math-61ede240', './Cartographic-fe4be337', './Cartesian2-85064f09', './BoundingSphere-775c5788', './Cartesian4-5af5bb24', './RuntimeError-ba10bc3e', './WebGLConstants-4c11ee5f', './ComponentDatatype-5862616f', './GeometryAttribute-ed9d707f', './PrimitiveType-97893bc7', './FeatureDetection-7bd32c34', './Transforms-a1cf7267', './buildModuleUrl-e7952659', './GeometryAttributes-aacecde6', './AttributeCompression-84a90a13', './GeometryPipeline-245a05d7', './EncodedCartesian3-a569cba8', './IndexDatatype-9435b55f', './IntersectionTests-397d9494', './Plane-8390418f', './VertexFormat-fe4db402', './arrayRemoveDuplicates-f0b089b1', './BoundingRectangle-dc808c42', './EllipsoidTangentPlane-e324bfa4', './EllipsoidRhumbLine-f161e674', './earcut-2.2.1-b404d9e6', './PolygonPipeline-fd46002b', './PolylineVolumeGeometryLibrary-5bb7662e', './EllipsoidGeodesic-84507801', './PolylinePipeline-a9f32196'], function (when, Check, _Math, Cartographic, Cartesian2, BoundingSphere, Cartesian4, RuntimeError, WebGLConstants, ComponentDatatype, GeometryAttribute, PrimitiveType, FeatureDetection, Transforms, buildModuleUrl, GeometryAttributes, AttributeCompression, GeometryPipeline, EncodedCartesian3, IndexDatatype, IntersectionTests, Plane, VertexFormat, arrayRemoveDuplicates, BoundingRectangle, EllipsoidTangentPlane, EllipsoidRhumbLine, earcut2_2_1, PolygonPipeline, PolylineVolumeGeometryLibrary, EllipsoidGeodesic, PolylinePipeline) { 'use strict';
|
|
function computeAttributes(result, shape, boundingRectangle, vertexFormat) {
|
var combinedPositions = result.combinedPositions;
|
var combinedLocalPositions = result.combinedLocalPositions;
|
var attributes = new GeometryAttributes.GeometryAttributes();
|
if (vertexFormat.position) {
|
attributes.position = new GeometryAttribute.GeometryAttribute({
|
componentDatatype : ComponentDatatype.ComponentDatatype.DOUBLE,
|
componentsPerAttribute : 3,
|
values : combinedPositions
|
});
|
}
|
var shapeLength = shape.length;
|
var vertexCount = combinedPositions.length / 3;
|
var length = (vertexCount - shapeLength * 2) / (shapeLength * 2);
|
var firstEndIndices = PolygonPipeline.PolygonPipeline.triangulate(shape);
|
|
var indicesCount = (length - 1) * (shapeLength) * 6 + firstEndIndices.length * 2;
|
var indices = IndexDatatype.IndexDatatype.createTypedArray(vertexCount, indicesCount);
|
var i, j;
|
var ll, ul, ur, lr;
|
var offset = shapeLength * 2;
|
var index = 0;
|
for (i = 0; i < length - 1; i++) {
|
for (j = 0; j < shapeLength - 1; j++) {
|
ll = j * 2 + i * shapeLength * 2;
|
lr = ll + offset;
|
ul = ll + 1;
|
ur = ul + offset;
|
|
indices[index++] = ul;
|
indices[index++] = ll;
|
indices[index++] = ur;
|
indices[index++] = ur;
|
indices[index++] = ll;
|
indices[index++] = lr;
|
}
|
ll = shapeLength * 2 - 2 + i * shapeLength * 2;
|
ul = ll + 1;
|
ur = ul + offset;
|
lr = ll + offset;
|
|
indices[index++] = ul;
|
indices[index++] = ll;
|
indices[index++] = ur;
|
indices[index++] = ur;
|
indices[index++] = ll;
|
indices[index++] = lr;
|
}
|
|
if (vertexFormat.st || vertexFormat.tangent || vertexFormat.bitangent) { // st required for tangent/bitangent calculation
|
var st = new Float32Array(vertexCount * 2);
|
var lengthSt = 1 / (length - 1);
|
var heightSt = 1 / (boundingRectangle.height);
|
var heightOffset = boundingRectangle.height / 2;
|
var s, t;
|
var stindex = 0;
|
for (i = 0; i < length; i++) {
|
s = i * lengthSt;
|
t = heightSt * (shape[0].y + heightOffset);
|
st[stindex++] = s;
|
st[stindex++] = t;
|
for (j = 1; j < shapeLength; j++) {
|
t = heightSt * (shape[j].y + heightOffset);
|
st[stindex++] = s;
|
st[stindex++] = t;
|
st[stindex++] = s;
|
st[stindex++] = t;
|
}
|
t = heightSt * (shape[0].y + heightOffset);
|
st[stindex++] = s;
|
st[stindex++] = t;
|
}
|
for (j = 0; j < shapeLength; j++) {
|
s = 0;
|
t = heightSt * (shape[j].y + heightOffset);
|
st[stindex++] = s;
|
st[stindex++] = t;
|
}
|
for (j = 0; j < shapeLength; j++) {
|
s = (length - 1) * lengthSt;
|
t = heightSt * (shape[j].y + heightOffset);
|
st[stindex++] = s;
|
st[stindex++] = t;
|
}
|
|
attributes.st = new GeometryAttribute.GeometryAttribute({
|
componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
|
componentsPerAttribute : 2,
|
values : new Float32Array(st)
|
});
|
}
|
|
var endOffset = vertexCount - shapeLength * 2;
|
for (i = 0; i < firstEndIndices.length; i += 3) {
|
var v0 = firstEndIndices[i] + endOffset;
|
var v1 = firstEndIndices[i + 1] + endOffset;
|
var v2 = firstEndIndices[i + 2] + endOffset;
|
|
indices[index++] = v0;
|
indices[index++] = v1;
|
indices[index++] = v2;
|
indices[index++] = v2 + shapeLength;
|
indices[index++] = v1 + shapeLength;
|
indices[index++] = v0 + shapeLength;
|
}
|
|
var geometry = new GeometryAttribute.Geometry({
|
attributes : attributes,
|
indices : indices,
|
boundingSphere : BoundingSphere.BoundingSphere.fromVertices(combinedPositions),
|
primitiveType : PrimitiveType.PrimitiveType.TRIANGLES
|
});
|
|
if (vertexFormat.normal) {
|
geometry = GeometryPipeline.GeometryPipeline.computeNormal(geometry);
|
}
|
|
if (vertexFormat.tangent || vertexFormat.bitangent) {
|
try {
|
geometry = GeometryPipeline.GeometryPipeline.computeTangentAndBitangent(geometry);
|
} catch (e) {
|
buildModuleUrl.oneTimeWarning('polyline-volume-tangent-bitangent', 'Unable to compute tangents and bitangents for polyline volume geometry');
|
//TODO https://github.com/AnalyticalGraphicsInc/cesium/issues/3609
|
}
|
|
if (!vertexFormat.tangent) {
|
geometry.attributes.tangent = undefined;
|
}
|
if (!vertexFormat.bitangent) {
|
geometry.attributes.bitangent = undefined;
|
}
|
if (!vertexFormat.st) {
|
geometry.attributes.st = undefined;
|
}
|
}
|
|
if(when.defined(combinedLocalPositions)) {
|
geometry.attributes.position.values = combinedLocalPositions;
|
geometry.attributes.position.componentDatatype = ComponentDatatype.ComponentDatatype.FLOAT;
|
}
|
|
return geometry;
|
}
|
|
/**
|
* A description of a polyline with a volume (a 2D shape extruded along a polyline).
|
*
|
* @alias PolylineVolumeGeometry
|
* @constructor
|
*
|
* @param {Object} options Object with the following properties:
|
* @param {Cartesian3[]} options.polylinePositions An array of {@link Cartesain3} positions that define the center of the polyline volume.
|
* @param {Cartesian2[]} options.shapePositions An array of {@link Cartesian2} positions that define the shape to be extruded along the polyline
|
* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid to be used as a reference.
|
* @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 {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
|
* @param {CornerType} [options.cornerType=CornerType.ROUNDED] Determines the style of the corners.
|
*
|
* @see PolylineVolumeGeometry#createGeometry
|
*
|
* @demo {@link https://cesiumjs.org/Cesium/Apps/Sandcastle/index.html?src=Polyline%20Volume.html|Cesium Sandcastle Polyline Volume Demo}
|
*
|
* @example
|
* function computeCircle(radius) {
|
* var positions = [];
|
* for (var i = 0; i < 360; i++) {
|
* var radians = Cesium.Math.toRadians(i);
|
* positions.push(new Cesium.Cartesian2(radius * Math.cos(radians), radius * Math.sin(radians)));
|
* }
|
* return positions;
|
* }
|
*
|
* var volume = new Cesium.PolylineVolumeGeometry({
|
* vertexFormat : Cesium.VertexFormat.POSITION_ONLY,
|
* polylinePositions : Cesium.Cartesian3.fromDegreesArray([
|
* -72.0, 40.0,
|
* -70.0, 35.0
|
* ]),
|
* shapePositions : computeCircle(100000.0)
|
* });
|
*/
|
function PolylineVolumeGeometry(options) {
|
options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
|
var positions = options.polylinePositions;
|
var shape = options.shapePositions;
|
|
//>>includeStart('debug', pragmas.debug);
|
if (!when.defined(positions)) {
|
throw new Check.DeveloperError('options.polylinePositions is required.');
|
}
|
if (!when.defined(shape)) {
|
throw new Check.DeveloperError('options.shapePositions is required.');
|
}
|
//>>includeEnd('debug');
|
|
this._positions = positions;
|
this._shape = shape;
|
this._ellipsoid = Cartesian2.Ellipsoid.clone(when.defaultValue(options.ellipsoid, Cartesian2.Ellipsoid.WGS84));
|
this._cornerType = when.defaultValue(options.cornerType, PolylineVolumeGeometryLibrary.CornerType.ROUNDED);
|
this._vertexFormat = VertexFormat.VertexFormat.clone(when.defaultValue(options.vertexFormat, VertexFormat.VertexFormat.DEFAULT));
|
this._granularity = when.defaultValue(options.granularity, _Math.CesiumMath.RADIANS_PER_DEGREE);
|
this._workerName = 'createPolylineVolumeGeometry';
|
this.enuCenter = when.defaultValue(options.enuCenter, Cartographic.Cartesian3.ZERO);
|
var numComponents = 1 + positions.length * Cartographic.Cartesian3.packedLength;
|
numComponents += 1 + shape.length * Cartesian2.Cartesian2.packedLength + Cartographic.Cartesian3.packedLength;
|
|
/**
|
* The number of elements used to pack the object into an array.
|
* @type {Number}
|
*/
|
this.packedLength = numComponents + Cartesian2.Ellipsoid.packedLength + VertexFormat.VertexFormat.packedLength + 2;
|
}
|
|
/**
|
* Stores the provided instance into the provided array.
|
*
|
* @param {PolylineVolumeGeometry} value The value to pack.
|
* @param {Number[]} array The array to pack into.
|
* @param {Number} [startingIndex=0] The index into the array at which to start packing the elements.
|
*
|
* @returns {Number[]} The array that was packed into
|
*/
|
PolylineVolumeGeometry.pack = function(value, array, startingIndex) {
|
//>>includeStart('debug', pragmas.debug);
|
if (!when.defined(value)) {
|
throw new Check.DeveloperError('value is required');
|
}
|
if (!when.defined(array)) {
|
throw new Check.DeveloperError('array is required');
|
}
|
//>>includeEnd('debug');
|
|
startingIndex = when.defaultValue(startingIndex, 0);
|
|
var i;
|
|
var positions = value._positions;
|
var length = positions.length;
|
array[startingIndex++] = length;
|
|
for (i = 0; i < length; ++i, startingIndex += Cartographic.Cartesian3.packedLength) {
|
Cartographic.Cartesian3.pack(positions[i], array, startingIndex);
|
}
|
|
var shape = value._shape;
|
length = shape.length;
|
array[startingIndex++] = length;
|
|
for (i = 0; i < length; ++i, startingIndex += Cartesian2.Cartesian2.packedLength) {
|
Cartesian2.Cartesian2.pack(shape[i], array, startingIndex);
|
}
|
|
Cartesian2.Ellipsoid.pack(value._ellipsoid, array, startingIndex);
|
startingIndex += Cartesian2.Ellipsoid.packedLength;
|
|
VertexFormat.VertexFormat.pack(value._vertexFormat, array, startingIndex);
|
startingIndex += VertexFormat.VertexFormat.packedLength;
|
|
array[startingIndex++] = value._cornerType;
|
array[startingIndex++] = value._granularity;
|
Cartographic.Cartesian3.pack(value.enuCenter, array, startingIndex);
|
return array;
|
};
|
|
var scratchEllipsoid = Cartesian2.Ellipsoid.clone(Cartesian2.Ellipsoid.UNIT_SPHERE);
|
var scratchVertexFormat = new VertexFormat.VertexFormat();
|
var scratchOptions = {
|
polylinePositions : undefined,
|
shapePositions : undefined,
|
ellipsoid : scratchEllipsoid,
|
vertexFormat : scratchVertexFormat,
|
cornerType : undefined,
|
granularity : undefined,
|
enuCenter : undefined
|
};
|
|
/**
|
* Retrieves an instance from a packed array.
|
*
|
* @param {Number[]} array The packed array.
|
* @param {Number} [startingIndex=0] The starting index of the element to be unpacked.
|
* @param {PolylineVolumeGeometry} [result] The object into which to store the result.
|
* @returns {PolylineVolumeGeometry} The modified result parameter or a new PolylineVolumeGeometry instance if one was not provided.
|
*/
|
PolylineVolumeGeometry.unpack = function(array, startingIndex, result) {
|
//>>includeStart('debug', pragmas.debug);
|
if (!when.defined(array)) {
|
throw new Check.DeveloperError('array is required');
|
}
|
//>>includeEnd('debug');
|
|
startingIndex = when.defaultValue(startingIndex, 0);
|
|
var i;
|
|
var length = array[startingIndex++];
|
var positions = new Array(length);
|
|
for (i = 0; i < length; ++i, startingIndex += Cartographic.Cartesian3.packedLength) {
|
positions[i] = Cartographic.Cartesian3.unpack(array, startingIndex);
|
}
|
|
length = array[startingIndex++];
|
var shape = new Array(length);
|
|
for (i = 0; i < length; ++i, startingIndex += Cartesian2.Cartesian2.packedLength) {
|
shape[i] = Cartesian2.Cartesian2.unpack(array, startingIndex);
|
}
|
|
var ellipsoid = Cartesian2.Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
|
startingIndex += Cartesian2.Ellipsoid.packedLength;
|
|
var vertexFormat = VertexFormat.VertexFormat.unpack(array, startingIndex, scratchVertexFormat);
|
startingIndex += VertexFormat.VertexFormat.packedLength;
|
|
var cornerType = array[startingIndex++];
|
var granularity = array[startingIndex++];
|
var enuCenter;
|
enuCenter = Cartographic.Cartesian3.unpack(array, startingIndex);
|
if (!when.defined(result)) {
|
scratchOptions.polylinePositions = positions;
|
scratchOptions.shapePositions = shape;
|
scratchOptions.cornerType = cornerType;
|
scratchOptions.granularity = granularity;
|
scratchOptions.enuCenter = enuCenter;
|
return new PolylineVolumeGeometry(scratchOptions);
|
}
|
|
result._positions = positions;
|
result._shape = shape;
|
result._ellipsoid = Cartesian2.Ellipsoid.clone(ellipsoid, result._ellipsoid);
|
result._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, result._vertexFormat);
|
result._cornerType = cornerType;
|
result._granularity = granularity;
|
result.enuCenter = enuCenter;
|
|
return result;
|
};
|
|
var brScratch = new BoundingRectangle.BoundingRectangle();
|
|
/**
|
* Computes the geometric representation of a polyline with a volume, including its vertices, indices, and a bounding sphere.
|
*
|
* @param {PolylineVolumeGeometry} polylineVolumeGeometry A description of the polyline volume.
|
* @returns {Geometry|undefined} The computed vertices and indices.
|
*/
|
PolylineVolumeGeometry.createGeometry = function(polylineVolumeGeometry) {
|
var positions = polylineVolumeGeometry._positions;
|
var cleanPositions = arrayRemoveDuplicates.arrayRemoveDuplicates(positions, Cartographic.Cartesian3.equalsEpsilon);
|
var len = cleanPositions.length;
|
var copyPositions = new Array(len);
|
for(var i = 0;i < len;i++){
|
copyPositions[i] = Cartographic.Cartesian3.clone(cleanPositions[i]);
|
}
|
var shape2D = polylineVolumeGeometry._shape;
|
shape2D = PolylineVolumeGeometryLibrary.PolylineVolumeGeometryLibrary.removeDuplicatesFromShape(shape2D);
|
|
if (cleanPositions.length < 2 || shape2D.length < 3) {
|
return undefined;
|
}
|
|
if (PolygonPipeline.PolygonPipeline.computeWindingOrder2D(shape2D) === PolygonPipeline.WindingOrder.CLOCKWISE) {
|
shape2D.reverse();
|
}
|
var boundingRectangle = BoundingRectangle.BoundingRectangle.fromPoints(shape2D, brScratch);
|
|
var res = {};
|
res.combinedPositions = PolylineVolumeGeometryLibrary.PolylineVolumeGeometryLibrary.computePositions(copyPositions, shape2D, boundingRectangle, polylineVolumeGeometry, true);
|
if(!Cartographic.Cartesian3.equals(polylineVolumeGeometry.enuCenter, Cartographic.Cartesian3.ZERO)) {
|
var cleanPositionsClone = new Array(len);
|
for(var i = 0;i < len;i++){
|
cleanPositionsClone[i] = Cartographic.Cartesian3.clone(cleanPositions[i]);
|
}
|
res.combinedLocalPositions = PolylineVolumeGeometryLibrary.PolylineVolumeGeometryLibrary.computeLocalPositions(cleanPositionsClone, shape2D, boundingRectangle, polylineVolumeGeometry, true, polylineVolumeGeometry.enuCenter);
|
}
|
return computeAttributes(res, shape2D, boundingRectangle, polylineVolumeGeometry._vertexFormat);
|
};
|
|
function createPolylineVolumeGeometry(polylineVolumeGeometry, offset) {
|
if (when.defined(offset)) {
|
polylineVolumeGeometry = PolylineVolumeGeometry.unpack(polylineVolumeGeometry, offset);
|
}
|
polylineVolumeGeometry._ellipsoid = Cartesian2.Ellipsoid.clone(polylineVolumeGeometry._ellipsoid);
|
return PolylineVolumeGeometry.createGeometry(polylineVolumeGeometry);
|
}
|
|
return createPolylineVolumeGeometry;
|
|
});
|
