469 lines
17 KiB
JavaScript
469 lines
17 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(['exports', './GeometryOffsetAttribute-7e016332', './Transforms-8b90e17c', './Matrix2-265d9610', './ComponentDatatype-aad54330', './when-4bbc8319', './RuntimeError-5b082e8f', './EllipseGeometryLibrary-4ab591fa', './GeometryAttribute-4bcb785f', './GeometryAttributes-7827a6c2', './IndexDatatype-6739e544'], (function (exports, GeometryOffsetAttribute, Transforms, Matrix2, ComponentDatatype, when, RuntimeError, EllipseGeometryLibrary, GeometryAttribute, GeometryAttributes, IndexDatatype) { 'use strict';
|
|
|
|
const scratchCartesian1 = new Matrix2.Cartesian3();
|
|
let boundingSphereCenter = new Matrix2.Cartesian3();
|
|
|
|
function computeEllipse(options) {
|
|
const center = options.center;
|
|
boundingSphereCenter = Matrix2.Cartesian3.multiplyByScalar(
|
|
options.ellipsoid.geodeticSurfaceNormal(center, boundingSphereCenter),
|
|
options.height,
|
|
boundingSphereCenter
|
|
);
|
|
boundingSphereCenter = Matrix2.Cartesian3.add(
|
|
center,
|
|
boundingSphereCenter,
|
|
boundingSphereCenter
|
|
);
|
|
const boundingSphere = new Transforms.BoundingSphere(
|
|
boundingSphereCenter,
|
|
options.semiMajorAxis
|
|
);
|
|
const positions = EllipseGeometryLibrary.EllipseGeometryLibrary.computeEllipsePositions(
|
|
options,
|
|
false,
|
|
true
|
|
).outerPositions;
|
|
|
|
const attributes = new GeometryAttributes.GeometryAttributes({
|
|
position: new GeometryAttribute.GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.ComponentDatatype.DOUBLE,
|
|
componentsPerAttribute: 3,
|
|
values: EllipseGeometryLibrary.EllipseGeometryLibrary.raisePositionsToHeight(
|
|
positions,
|
|
options,
|
|
false
|
|
),
|
|
}),
|
|
});
|
|
|
|
const length = positions.length / 3;
|
|
const indices = IndexDatatype.IndexDatatype.createTypedArray(length, length * 2);
|
|
let index = 0;
|
|
for (let i = 0; i < length; ++i) {
|
|
indices[index++] = i;
|
|
indices[index++] = (i + 1) % length;
|
|
}
|
|
|
|
return {
|
|
boundingSphere: boundingSphere,
|
|
attributes: attributes,
|
|
indices: indices,
|
|
};
|
|
}
|
|
|
|
const topBoundingSphere = new Transforms.BoundingSphere();
|
|
const bottomBoundingSphere = new Transforms.BoundingSphere();
|
|
function computeExtrudedEllipse(options) {
|
|
const center = options.center;
|
|
const ellipsoid = options.ellipsoid;
|
|
const semiMajorAxis = options.semiMajorAxis;
|
|
let scaledNormal = Matrix2.Cartesian3.multiplyByScalar(
|
|
ellipsoid.geodeticSurfaceNormal(center, scratchCartesian1),
|
|
options.height,
|
|
scratchCartesian1
|
|
);
|
|
topBoundingSphere.center = Matrix2.Cartesian3.add(
|
|
center,
|
|
scaledNormal,
|
|
topBoundingSphere.center
|
|
);
|
|
topBoundingSphere.radius = semiMajorAxis;
|
|
|
|
scaledNormal = Matrix2.Cartesian3.multiplyByScalar(
|
|
ellipsoid.geodeticSurfaceNormal(center, scaledNormal),
|
|
options.extrudedHeight,
|
|
scaledNormal
|
|
);
|
|
bottomBoundingSphere.center = Matrix2.Cartesian3.add(
|
|
center,
|
|
scaledNormal,
|
|
bottomBoundingSphere.center
|
|
);
|
|
bottomBoundingSphere.radius = semiMajorAxis;
|
|
|
|
let positions = EllipseGeometryLibrary.EllipseGeometryLibrary.computeEllipsePositions(
|
|
options,
|
|
false,
|
|
true
|
|
).outerPositions;
|
|
const attributes = new GeometryAttributes.GeometryAttributes({
|
|
position: new GeometryAttribute.GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.ComponentDatatype.DOUBLE,
|
|
componentsPerAttribute: 3,
|
|
values: EllipseGeometryLibrary.EllipseGeometryLibrary.raisePositionsToHeight(
|
|
positions,
|
|
options,
|
|
true
|
|
),
|
|
}),
|
|
});
|
|
|
|
positions = attributes.position.values;
|
|
const boundingSphere = Transforms.BoundingSphere.union(
|
|
topBoundingSphere,
|
|
bottomBoundingSphere
|
|
);
|
|
let length = positions.length / 3;
|
|
|
|
if (when.defined(options.offsetAttribute)) {
|
|
let applyOffset = new Uint8Array(length);
|
|
if (options.offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.TOP) {
|
|
applyOffset = GeometryOffsetAttribute.arrayFill(applyOffset, 1, 0, length / 2);
|
|
} else {
|
|
const offsetValue =
|
|
options.offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.NONE ? 0 : 1;
|
|
applyOffset = GeometryOffsetAttribute.arrayFill(applyOffset, offsetValue);
|
|
}
|
|
|
|
attributes.applyOffset = new GeometryAttribute.GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.ComponentDatatype.UNSIGNED_BYTE,
|
|
componentsPerAttribute: 1,
|
|
values: applyOffset,
|
|
});
|
|
}
|
|
|
|
let numberOfVerticalLines = when.defaultValue(options.numberOfVerticalLines, 16);
|
|
numberOfVerticalLines = ComponentDatatype.CesiumMath.clamp(
|
|
numberOfVerticalLines,
|
|
0,
|
|
length / 2
|
|
);
|
|
|
|
const indices = IndexDatatype.IndexDatatype.createTypedArray(
|
|
length,
|
|
length * 2 + numberOfVerticalLines * 2
|
|
);
|
|
|
|
length /= 2;
|
|
let index = 0;
|
|
let i;
|
|
for (i = 0; i < length; ++i) {
|
|
indices[index++] = i;
|
|
indices[index++] = (i + 1) % length;
|
|
indices[index++] = i + length;
|
|
indices[index++] = ((i + 1) % length) + length;
|
|
}
|
|
|
|
let numSide;
|
|
if (numberOfVerticalLines > 0) {
|
|
const numSideLines = Math.min(numberOfVerticalLines, length);
|
|
numSide = Math.round(length / numSideLines);
|
|
|
|
const maxI = Math.min(numSide * numberOfVerticalLines, length);
|
|
for (i = 0; i < maxI; i += numSide) {
|
|
indices[index++] = i;
|
|
indices[index++] = i + length;
|
|
}
|
|
}
|
|
|
|
return {
|
|
boundingSphere: boundingSphere,
|
|
attributes: attributes,
|
|
indices: indices,
|
|
};
|
|
}
|
|
|
|
/**
|
|
* A description of the outline of an ellipse on an ellipsoid.
|
|
*
|
|
* @alias EllipseOutlineGeometry
|
|
* @constructor
|
|
*
|
|
* @param {Object} options Object with the following properties:
|
|
* @param {Cartesian3} options.center The ellipse's center point in the fixed frame.
|
|
* @param {Number} options.semiMajorAxis The length of the ellipse's semi-major axis in meters.
|
|
* @param {Number} options.semiMinorAxis The length of the ellipse's semi-minor axis in meters.
|
|
* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid the ellipse will be on.
|
|
* @param {Number} [options.height=0.0] The distance in meters between the ellipse and the ellipsoid surface.
|
|
* @param {Number} [options.extrudedHeight] The distance in meters between the ellipse's extruded face and the ellipsoid surface.
|
|
* @param {Number} [options.rotation=0.0] The angle from north (counter-clockwise) in radians.
|
|
* @param {Number} [options.granularity=0.02] The angular distance between points on the ellipse in radians.
|
|
* @param {Number} [options.numberOfVerticalLines=16] Number of lines to draw between the top and bottom surface of an extruded ellipse.
|
|
*
|
|
* @exception {DeveloperError} semiMajorAxis and semiMinorAxis must be greater than zero.
|
|
* @exception {DeveloperError} semiMajorAxis must be greater than or equal to the semiMinorAxis.
|
|
* @exception {DeveloperError} granularity must be greater than zero.
|
|
*
|
|
* @see EllipseOutlineGeometry.createGeometry
|
|
*
|
|
* @example
|
|
* const ellipse = new Cesium.EllipseOutlineGeometry({
|
|
* center : Cesium.Cartesian3.fromDegrees(-75.59777, 40.03883),
|
|
* semiMajorAxis : 500000.0,
|
|
* semiMinorAxis : 300000.0,
|
|
* rotation : Cesium.Math.toRadians(60.0)
|
|
* });
|
|
* const geometry = Cesium.EllipseOutlineGeometry.createGeometry(ellipse);
|
|
*/
|
|
function EllipseOutlineGeometry(options) {
|
|
options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
|
|
|
|
const center = options.center;
|
|
const ellipsoid = when.defaultValue(options.ellipsoid, Matrix2.Ellipsoid.WGS84);
|
|
const semiMajorAxis = options.semiMajorAxis;
|
|
const semiMinorAxis = options.semiMinorAxis;
|
|
const granularity = when.defaultValue(
|
|
options.granularity,
|
|
ComponentDatatype.CesiumMath.RADIANS_PER_DEGREE
|
|
);
|
|
|
|
//>>includeStart('debug', pragmas.debug);
|
|
if (!when.defined(center)) {
|
|
throw new RuntimeError.DeveloperError("center is required.");
|
|
}
|
|
if (!when.defined(semiMajorAxis)) {
|
|
throw new RuntimeError.DeveloperError("semiMajorAxis is required.");
|
|
}
|
|
if (!when.defined(semiMinorAxis)) {
|
|
throw new RuntimeError.DeveloperError("semiMinorAxis is required.");
|
|
}
|
|
if (semiMajorAxis < semiMinorAxis) {
|
|
throw new RuntimeError.DeveloperError(
|
|
"semiMajorAxis must be greater than or equal to the semiMinorAxis."
|
|
);
|
|
}
|
|
if (granularity <= 0.0) {
|
|
throw new RuntimeError.DeveloperError("granularity must be greater than zero.");
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
const height = when.defaultValue(options.height, 0.0);
|
|
const extrudedHeight = when.defaultValue(options.extrudedHeight, height);
|
|
|
|
this._center = Matrix2.Cartesian3.clone(center);
|
|
this._semiMajorAxis = semiMajorAxis;
|
|
this._semiMinorAxis = semiMinorAxis;
|
|
this._ellipsoid = Matrix2.Ellipsoid.clone(ellipsoid);
|
|
this._rotation = when.defaultValue(options.rotation, 0.0);
|
|
this._height = Math.max(extrudedHeight, height);
|
|
this._granularity = granularity;
|
|
this._extrudedHeight = Math.min(extrudedHeight, height);
|
|
this._numberOfVerticalLines = Math.max(
|
|
when.defaultValue(options.numberOfVerticalLines, 16),
|
|
0
|
|
);
|
|
this._offsetAttribute = options.offsetAttribute;
|
|
this._workerName = "createEllipseOutlineGeometry";
|
|
}
|
|
|
|
/**
|
|
* The number of elements used to pack the object into an array.
|
|
* @type {Number}
|
|
*/
|
|
EllipseOutlineGeometry.packedLength =
|
|
Matrix2.Cartesian3.packedLength + Matrix2.Ellipsoid.packedLength + 8;
|
|
|
|
/**
|
|
* Stores the provided instance into the provided array.
|
|
*
|
|
* @param {EllipseOutlineGeometry} 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
|
|
*/
|
|
EllipseOutlineGeometry.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);
|
|
|
|
Matrix2.Cartesian3.pack(value._center, array, startingIndex);
|
|
startingIndex += Matrix2.Cartesian3.packedLength;
|
|
|
|
Matrix2.Ellipsoid.pack(value._ellipsoid, array, startingIndex);
|
|
startingIndex += Matrix2.Ellipsoid.packedLength;
|
|
|
|
array[startingIndex++] = value._semiMajorAxis;
|
|
array[startingIndex++] = value._semiMinorAxis;
|
|
array[startingIndex++] = value._rotation;
|
|
array[startingIndex++] = value._height;
|
|
array[startingIndex++] = value._granularity;
|
|
array[startingIndex++] = value._extrudedHeight;
|
|
array[startingIndex++] = value._numberOfVerticalLines;
|
|
array[startingIndex] = when.defaultValue(value._offsetAttribute, -1);
|
|
|
|
return array;
|
|
};
|
|
|
|
const scratchCenter = new Matrix2.Cartesian3();
|
|
const scratchEllipsoid = new Matrix2.Ellipsoid();
|
|
const scratchOptions = {
|
|
center: scratchCenter,
|
|
ellipsoid: scratchEllipsoid,
|
|
semiMajorAxis: undefined,
|
|
semiMinorAxis: undefined,
|
|
rotation: undefined,
|
|
height: undefined,
|
|
granularity: undefined,
|
|
extrudedHeight: undefined,
|
|
numberOfVerticalLines: undefined,
|
|
offsetAttribute: 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 {EllipseOutlineGeometry} [result] The object into which to store the result.
|
|
* @returns {EllipseOutlineGeometry} The modified result parameter or a new EllipseOutlineGeometry instance if one was not provided.
|
|
*/
|
|
EllipseOutlineGeometry.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);
|
|
|
|
const center = Matrix2.Cartesian3.unpack(array, startingIndex, scratchCenter);
|
|
startingIndex += Matrix2.Cartesian3.packedLength;
|
|
|
|
const ellipsoid = Matrix2.Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
|
|
startingIndex += Matrix2.Ellipsoid.packedLength;
|
|
|
|
const semiMajorAxis = array[startingIndex++];
|
|
const semiMinorAxis = array[startingIndex++];
|
|
const rotation = array[startingIndex++];
|
|
const height = array[startingIndex++];
|
|
const granularity = array[startingIndex++];
|
|
const extrudedHeight = array[startingIndex++];
|
|
const numberOfVerticalLines = array[startingIndex++];
|
|
const offsetAttribute = array[startingIndex];
|
|
|
|
if (!when.defined(result)) {
|
|
scratchOptions.height = height;
|
|
scratchOptions.extrudedHeight = extrudedHeight;
|
|
scratchOptions.granularity = granularity;
|
|
scratchOptions.rotation = rotation;
|
|
scratchOptions.semiMajorAxis = semiMajorAxis;
|
|
scratchOptions.semiMinorAxis = semiMinorAxis;
|
|
scratchOptions.numberOfVerticalLines = numberOfVerticalLines;
|
|
scratchOptions.offsetAttribute =
|
|
offsetAttribute === -1 ? undefined : offsetAttribute;
|
|
|
|
return new EllipseOutlineGeometry(scratchOptions);
|
|
}
|
|
|
|
result._center = Matrix2.Cartesian3.clone(center, result._center);
|
|
result._ellipsoid = Matrix2.Ellipsoid.clone(ellipsoid, result._ellipsoid);
|
|
result._semiMajorAxis = semiMajorAxis;
|
|
result._semiMinorAxis = semiMinorAxis;
|
|
result._rotation = rotation;
|
|
result._height = height;
|
|
result._granularity = granularity;
|
|
result._extrudedHeight = extrudedHeight;
|
|
result._numberOfVerticalLines = numberOfVerticalLines;
|
|
result._offsetAttribute =
|
|
offsetAttribute === -1 ? undefined : offsetAttribute;
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Computes the geometric representation of an outline of an ellipse on an ellipsoid, including its vertices, indices, and a bounding sphere.
|
|
*
|
|
* @param {EllipseOutlineGeometry} ellipseGeometry A description of the ellipse.
|
|
* @returns {Geometry|undefined} The computed vertices and indices.
|
|
*/
|
|
EllipseOutlineGeometry.createGeometry = function (ellipseGeometry) {
|
|
if (
|
|
ellipseGeometry._semiMajorAxis <= 0.0 ||
|
|
ellipseGeometry._semiMinorAxis <= 0.0
|
|
) {
|
|
return;
|
|
}
|
|
|
|
const height = ellipseGeometry._height;
|
|
const extrudedHeight = ellipseGeometry._extrudedHeight;
|
|
const extrude = !ComponentDatatype.CesiumMath.equalsEpsilon(
|
|
height,
|
|
extrudedHeight,
|
|
0,
|
|
ComponentDatatype.CesiumMath.EPSILON2
|
|
);
|
|
|
|
ellipseGeometry._center = ellipseGeometry._ellipsoid.scaleToGeodeticSurface(
|
|
ellipseGeometry._center,
|
|
ellipseGeometry._center
|
|
);
|
|
const options = {
|
|
center: ellipseGeometry._center,
|
|
semiMajorAxis: ellipseGeometry._semiMajorAxis,
|
|
semiMinorAxis: ellipseGeometry._semiMinorAxis,
|
|
ellipsoid: ellipseGeometry._ellipsoid,
|
|
rotation: ellipseGeometry._rotation,
|
|
height: height,
|
|
granularity: ellipseGeometry._granularity,
|
|
numberOfVerticalLines: ellipseGeometry._numberOfVerticalLines,
|
|
};
|
|
let geometry;
|
|
if (extrude) {
|
|
options.extrudedHeight = extrudedHeight;
|
|
options.offsetAttribute = ellipseGeometry._offsetAttribute;
|
|
geometry = computeExtrudedEllipse(options);
|
|
} else {
|
|
geometry = computeEllipse(options);
|
|
|
|
if (when.defined(ellipseGeometry._offsetAttribute)) {
|
|
const length = geometry.attributes.position.values.length;
|
|
const applyOffset = new Uint8Array(length / 3);
|
|
const offsetValue =
|
|
ellipseGeometry._offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.NONE
|
|
? 0
|
|
: 1;
|
|
GeometryOffsetAttribute.arrayFill(applyOffset, offsetValue);
|
|
geometry.attributes.applyOffset = new GeometryAttribute.GeometryAttribute({
|
|
componentDatatype: ComponentDatatype.ComponentDatatype.UNSIGNED_BYTE,
|
|
componentsPerAttribute: 1,
|
|
values: applyOffset,
|
|
});
|
|
}
|
|
}
|
|
|
|
return new GeometryAttribute.Geometry({
|
|
attributes: geometry.attributes,
|
|
indices: geometry.indices,
|
|
primitiveType: GeometryAttribute.PrimitiveType.LINES,
|
|
boundingSphere: geometry.boundingSphere,
|
|
offsetAttribute: ellipseGeometry._offsetAttribute,
|
|
});
|
|
};
|
|
|
|
exports.EllipseOutlineGeometry = EllipseOutlineGeometry;
|
|
|
|
}));
|
|
//# sourceMappingURL=EllipseOutlineGeometry-7293c691.js.map
|