436 lines
16 KiB
JavaScript
436 lines
16 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/main/LICENSE.md for full licensing details.
|
|
*/
|
|
|
|
define(['./when-4bbc8319', './Matrix2-265d9610', './arrayRemoveDuplicates-65de6756', './BoundingRectangle-8f2409a1', './Transforms-8b90e17c', './ComponentDatatype-aad54330', './PolylineVolumeGeometryLibrary-738776c0', './RuntimeError-5b082e8f', './GeometryAttribute-4bcb785f', './GeometryAttributes-7827a6c2', './GeometryPipeline-e93f6439', './IndexDatatype-6739e544', './PolygonPipeline-5fd67ae2', './VertexFormat-07539138', './combine-e9466e32', './WebGLConstants-508b9636', './EllipsoidTangentPlane-f1a69a20', './AxisAlignedBoundingBox-2a0ca7ef', './IntersectionTests-596e31ec', './Plane-616c9c0a', './PolylinePipeline-b9913663', './EllipsoidGeodesic-ed024f16', './EllipsoidRhumbLine-d09d563f', './AttributeCompression-442278a0', './EncodedCartesian3-da8f96bc'], (function (when, Matrix2, arrayRemoveDuplicates, BoundingRectangle, Transforms, ComponentDatatype, PolylineVolumeGeometryLibrary, RuntimeError, GeometryAttribute, GeometryAttributes, GeometryPipeline, IndexDatatype, PolygonPipeline, VertexFormat, combine, WebGLConstants, EllipsoidTangentPlane, AxisAlignedBoundingBox, IntersectionTests, Plane, PolylinePipeline, EllipsoidGeodesic, EllipsoidRhumbLine, AttributeCompression, EncodedCartesian3) { 'use strict';
|
|
|
|
function computeAttributes(
|
|
combinedPositions,
|
|
shape,
|
|
boundingRectangle,
|
|
vertexFormat
|
|
) {
|
|
const attributes = new GeometryAttributes.GeometryAttributes();
|
|
if (vertexFormat.position) {
|
|
attributes.position = new GeometryAttribute.GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.ComponentDatatype.DOUBLE,
|
|
componentsPerAttribute: 3,
|
|
values: combinedPositions,
|
|
});
|
|
}
|
|
const shapeLength = shape.length;
|
|
const vertexCount = combinedPositions.length / 3;
|
|
const length = (vertexCount - shapeLength * 2) / (shapeLength * 2);
|
|
const firstEndIndices = PolygonPipeline.PolygonPipeline.triangulate(shape);
|
|
|
|
const indicesCount =
|
|
(length - 1) * shapeLength * 6 + firstEndIndices.length * 2;
|
|
const indices = IndexDatatype.IndexDatatype.createTypedArray(vertexCount, indicesCount);
|
|
let i, j;
|
|
let ll, ul, ur, lr;
|
|
const offset = shapeLength * 2;
|
|
let 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
|
|
const st = new Float32Array(vertexCount * 2);
|
|
const lengthSt = 1 / (length - 1);
|
|
const heightSt = 1 / boundingRectangle.height;
|
|
const heightOffset = boundingRectangle.height / 2;
|
|
let s, t;
|
|
let 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),
|
|
});
|
|
}
|
|
|
|
const endOffset = vertexCount - shapeLength * 2;
|
|
for (i = 0; i < firstEndIndices.length; i += 3) {
|
|
const v0 = firstEndIndices[i] + endOffset;
|
|
const v1 = firstEndIndices[i + 1] + endOffset;
|
|
const 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;
|
|
}
|
|
|
|
let geometry = new GeometryAttribute.Geometry({
|
|
attributes: attributes,
|
|
indices: indices,
|
|
boundingSphere: Transforms.BoundingSphere.fromVertices(combinedPositions),
|
|
primitiveType: GeometryAttribute.PrimitiveType.TRIANGLES,
|
|
});
|
|
|
|
if (vertexFormat.normal) {
|
|
geometry = GeometryPipeline.GeometryPipeline.computeNormal(geometry);
|
|
}
|
|
|
|
if (vertexFormat.tangent || vertexFormat.bitangent) {
|
|
try {
|
|
geometry = GeometryPipeline.GeometryPipeline.computeTangentAndBitangent(geometry);
|
|
} catch (e) {
|
|
PolylineVolumeGeometryLibrary.oneTimeWarning(
|
|
"polyline-volume-tangent-bitangent",
|
|
"Unable to compute tangents and bitangents for polyline volume geometry"
|
|
);
|
|
//TODO https://github.com/CesiumGS/cesium/issues/3609
|
|
}
|
|
|
|
if (!vertexFormat.tangent) {
|
|
geometry.attributes.tangent = undefined;
|
|
}
|
|
if (!vertexFormat.bitangent) {
|
|
geometry.attributes.bitangent = undefined;
|
|
}
|
|
if (!vertexFormat.st) {
|
|
geometry.attributes.st = undefined;
|
|
}
|
|
}
|
|
|
|
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 Cartesian3} 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://sandcastle.cesium.com/index.html?src=Polyline%20Volume.html|Cesium Sandcastle Polyline Volume Demo}
|
|
*
|
|
* @example
|
|
* function computeCircle(radius) {
|
|
* const positions = [];
|
|
* for (let i = 0; i < 360; i++) {
|
|
* const radians = Cesium.Math.toRadians(i);
|
|
* positions.push(new Cesium.Cartesian2(radius * Math.cos(radians), radius * Math.sin(radians)));
|
|
* }
|
|
* return positions;
|
|
* }
|
|
*
|
|
* const 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);
|
|
const positions = options.polylinePositions;
|
|
const shape = options.shapePositions;
|
|
|
|
//>>includeStart('debug', pragmas.debug);
|
|
if (!when.defined(positions)) {
|
|
throw new RuntimeError.DeveloperError("options.polylinePositions is required.");
|
|
}
|
|
if (!when.defined(shape)) {
|
|
throw new RuntimeError.DeveloperError("options.shapePositions is required.");
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
this._positions = positions;
|
|
this._shape = shape;
|
|
this._ellipsoid = Matrix2.Ellipsoid.clone(
|
|
when.defaultValue(options.ellipsoid, Matrix2.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,
|
|
ComponentDatatype.CesiumMath.RADIANS_PER_DEGREE
|
|
);
|
|
this._workerName = "createPolylineVolumeGeometry";
|
|
|
|
let numComponents = 1 + positions.length * Matrix2.Cartesian3.packedLength;
|
|
numComponents += 1 + shape.length * Matrix2.Cartesian2.packedLength;
|
|
|
|
/**
|
|
* The number of elements used to pack the object into an array.
|
|
* @type {Number}
|
|
*/
|
|
this.packedLength =
|
|
numComponents + Matrix2.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 RuntimeError.DeveloperError("value is required");
|
|
}
|
|
if (!when.defined(array)) {
|
|
throw new RuntimeError.DeveloperError("array is required");
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
startingIndex = when.defaultValue(startingIndex, 0);
|
|
|
|
let i;
|
|
|
|
const positions = value._positions;
|
|
let length = positions.length;
|
|
array[startingIndex++] = length;
|
|
|
|
for (i = 0; i < length; ++i, startingIndex += Matrix2.Cartesian3.packedLength) {
|
|
Matrix2.Cartesian3.pack(positions[i], array, startingIndex);
|
|
}
|
|
|
|
const shape = value._shape;
|
|
length = shape.length;
|
|
array[startingIndex++] = length;
|
|
|
|
for (i = 0; i < length; ++i, startingIndex += Matrix2.Cartesian2.packedLength) {
|
|
Matrix2.Cartesian2.pack(shape[i], array, startingIndex);
|
|
}
|
|
|
|
Matrix2.Ellipsoid.pack(value._ellipsoid, array, startingIndex);
|
|
startingIndex += Matrix2.Ellipsoid.packedLength;
|
|
|
|
VertexFormat.VertexFormat.pack(value._vertexFormat, array, startingIndex);
|
|
startingIndex += VertexFormat.VertexFormat.packedLength;
|
|
|
|
array[startingIndex++] = value._cornerType;
|
|
array[startingIndex] = value._granularity;
|
|
|
|
return array;
|
|
};
|
|
|
|
const scratchEllipsoid = Matrix2.Ellipsoid.clone(Matrix2.Ellipsoid.UNIT_SPHERE);
|
|
const scratchVertexFormat = new VertexFormat.VertexFormat();
|
|
const scratchOptions = {
|
|
polylinePositions: undefined,
|
|
shapePositions: undefined,
|
|
ellipsoid: scratchEllipsoid,
|
|
vertexFormat: scratchVertexFormat,
|
|
cornerType: undefined,
|
|
granularity: 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 RuntimeError.DeveloperError("array is required");
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
startingIndex = when.defaultValue(startingIndex, 0);
|
|
|
|
let i;
|
|
|
|
let length = array[startingIndex++];
|
|
const positions = new Array(length);
|
|
|
|
for (i = 0; i < length; ++i, startingIndex += Matrix2.Cartesian3.packedLength) {
|
|
positions[i] = Matrix2.Cartesian3.unpack(array, startingIndex);
|
|
}
|
|
|
|
length = array[startingIndex++];
|
|
const shape = new Array(length);
|
|
|
|
for (i = 0; i < length; ++i, startingIndex += Matrix2.Cartesian2.packedLength) {
|
|
shape[i] = Matrix2.Cartesian2.unpack(array, startingIndex);
|
|
}
|
|
|
|
const ellipsoid = Matrix2.Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
|
|
startingIndex += Matrix2.Ellipsoid.packedLength;
|
|
|
|
const vertexFormat = VertexFormat.VertexFormat.unpack(
|
|
array,
|
|
startingIndex,
|
|
scratchVertexFormat
|
|
);
|
|
startingIndex += VertexFormat.VertexFormat.packedLength;
|
|
|
|
const cornerType = array[startingIndex++];
|
|
const granularity = array[startingIndex];
|
|
|
|
if (!when.defined(result)) {
|
|
scratchOptions.polylinePositions = positions;
|
|
scratchOptions.shapePositions = shape;
|
|
scratchOptions.cornerType = cornerType;
|
|
scratchOptions.granularity = granularity;
|
|
return new PolylineVolumeGeometry(scratchOptions);
|
|
}
|
|
|
|
result._positions = positions;
|
|
result._shape = shape;
|
|
result._ellipsoid = Matrix2.Ellipsoid.clone(ellipsoid, result._ellipsoid);
|
|
result._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, result._vertexFormat);
|
|
result._cornerType = cornerType;
|
|
result._granularity = granularity;
|
|
|
|
return result;
|
|
};
|
|
|
|
const 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) {
|
|
const positions = polylineVolumeGeometry._positions;
|
|
const cleanPositions = arrayRemoveDuplicates.arrayRemoveDuplicates(
|
|
positions,
|
|
Matrix2.Cartesian3.equalsEpsilon
|
|
);
|
|
let 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();
|
|
}
|
|
const boundingRectangle = BoundingRectangle.BoundingRectangle.fromPoints(shape2D, brScratch);
|
|
|
|
const computedPositions = PolylineVolumeGeometryLibrary.PolylineVolumeGeometryLibrary.computePositions(
|
|
cleanPositions,
|
|
shape2D,
|
|
boundingRectangle,
|
|
polylineVolumeGeometry,
|
|
true
|
|
);
|
|
return computeAttributes(
|
|
computedPositions,
|
|
shape2D,
|
|
boundingRectangle,
|
|
polylineVolumeGeometry._vertexFormat
|
|
);
|
|
};
|
|
|
|
function createPolylineVolumeGeometry(polylineVolumeGeometry, offset) {
|
|
if (when.defined(offset)) {
|
|
polylineVolumeGeometry = PolylineVolumeGeometry.unpack(
|
|
polylineVolumeGeometry,
|
|
offset
|
|
);
|
|
}
|
|
polylineVolumeGeometry._ellipsoid = Matrix2.Ellipsoid.clone(
|
|
polylineVolumeGeometry._ellipsoid
|
|
);
|
|
return PolylineVolumeGeometry.createGeometry(polylineVolumeGeometry);
|
|
}
|
|
|
|
return createPolylineVolumeGeometry;
|
|
|
|
}));
|
|
//# sourceMappingURL=createPolylineVolumeGeometry.js.map
|