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import Cartesian3 from "./Cartesian3.js";
import Cartographic from "./Cartographic.js";
import ComponentDatatype from "./ComponentDatatype.js";
import Frozen from "./Frozen.js";
import defined from "./defined.js";
import DeveloperError from "./DeveloperError.js";
import Ellipsoid from "./Ellipsoid.js";
import Geometry from "./Geometry.js";
import GeometryAttribute from "./GeometryAttribute.js";
import GeometryAttributes from "./GeometryAttributes.js";
import GeometryOffsetAttribute from "./GeometryOffsetAttribute.js";
import IndexDatatype from "./IndexDatatype.js";
import CesiumMath from "./Math.js";
import PolygonPipeline from "./PolygonPipeline.js";
import PrimitiveType from "./PrimitiveType.js";
import Rectangle from "./Rectangle.js";
import RectangleGeometryLibrary from "./RectangleGeometryLibrary.js";
const bottomBoundingSphere = new BoundingSphere();
const topBoundingSphere = new BoundingSphere();
const positionScratch = new Cartesian3();
const rectangleScratch = new Rectangle();
function constructRectangle(geometry, computedOptions) {
const ellipsoid = geometry._ellipsoid;
const height = computedOptions.height;
const width = computedOptions.width;
const northCap = computedOptions.northCap;
const southCap = computedOptions.southCap;
let rowHeight = height;
let widthMultiplier = 2;
let size = 0;
let corners = 4;
if (northCap) {
widthMultiplier -= 1;
rowHeight -= 1;
size += 1;
corners -= 2;
}
if (southCap) {
widthMultiplier -= 1;
rowHeight -= 1;
size += 1;
corners -= 2;
}
size += widthMultiplier * width + 2 * rowHeight - corners;
const positions = new Float64Array(size * 3);
let posIndex = 0;
let row = 0;
let col;
const position = positionScratch;
if (northCap) {
RectangleGeometryLibrary.computePosition(
computedOptions,
ellipsoid,
false,
row,
0,
position,
);
positions[posIndex++] = position.x;
positions[posIndex++] = position.y;
positions[posIndex++] = position.z;
} else {
for (col = 0; col < width; col++) {
RectangleGeometryLibrary.computePosition(
computedOptions,
ellipsoid,
false,
row,
col,
position,
);
positions[posIndex++] = position.x;
positions[posIndex++] = position.y;
positions[posIndex++] = position.z;
}
}
col = width - 1;
for (row = 1; row < height; row++) {
RectangleGeometryLibrary.computePosition(
computedOptions,
ellipsoid,
false,
row,
col,
position,
);
positions[posIndex++] = position.x;
positions[posIndex++] = position.y;
positions[posIndex++] = position.z;
}
row = height - 1;
if (!southCap) {
// if southCap is true, we dont need to add any more points because the south pole point was added by the iteration above
for (col = width - 2; col >= 0; col--) {
RectangleGeometryLibrary.computePosition(
computedOptions,
ellipsoid,
false,
row,
col,
position,
);
positions[posIndex++] = position.x;
positions[posIndex++] = position.y;
positions[posIndex++] = position.z;
}
}
col = 0;
for (row = height - 2; row > 0; row--) {
RectangleGeometryLibrary.computePosition(
computedOptions,
ellipsoid,
false,
row,
col,
position,
);
positions[posIndex++] = position.x;
positions[posIndex++] = position.y;
positions[posIndex++] = position.z;
}
const indicesSize = (positions.length / 3) * 2;
const indices = IndexDatatype.createTypedArray(
positions.length / 3,
indicesSize,
);
let index = 0;
for (let i = 0; i < positions.length / 3 - 1; i++) {
indices[index++] = i;
indices[index++] = i + 1;
}
indices[index++] = positions.length / 3 - 1;
indices[index++] = 0;
const geo = new Geometry({
attributes: new GeometryAttributes(),
primitiveType: PrimitiveType.LINES,
});
geo.attributes.position = new GeometryAttribute({
componentDatatype: ComponentDatatype.DOUBLE,
componentsPerAttribute: 3,
values: positions,
});
geo.indices = indices;
return geo;
}
function constructExtrudedRectangle(rectangleGeometry, computedOptions) {
const maxHeight = rectangleGeometry._surfaceHeight;
const minHeight = rectangleGeometry._extrudedHeight;
const ellipsoid = rectangleGeometry._ellipsoid;
const geo = constructRectangle(rectangleGeometry, computedOptions);
const height = computedOptions.height;
const width = computedOptions.width;
const topPositions = PolygonPipeline.scaleToGeodeticHeight(
geo.attributes.position.values,
maxHeight,
ellipsoid,
false,
);
let length = topPositions.length;
const positions = new Float64Array(length * 2);
positions.set(topPositions);
const bottomPositions = PolygonPipeline.scaleToGeodeticHeight(
geo.attributes.position.values,
minHeight,
ellipsoid,
);
positions.set(bottomPositions, length);
geo.attributes.position.values = positions;
const northCap = computedOptions.northCap;
const southCap = computedOptions.southCap;
let corners = 4;
if (northCap) {
corners -= 1;
}
if (southCap) {
corners -= 1;
}
const indicesSize = (positions.length / 3 + corners) * 2;
const indices = IndexDatatype.createTypedArray(
positions.length / 3,
indicesSize,
);
length = positions.length / 6;
let index = 0;
for (let i = 0; i < length - 1; i++) {
indices[index++] = i;
indices[index++] = i + 1;
indices[index++] = i + length;
indices[index++] = i + length + 1;
}
indices[index++] = length - 1;
indices[index++] = 0;
indices[index++] = length + length - 1;
indices[index++] = length;
indices[index++] = 0;
indices[index++] = length;
let bottomCorner;
if (northCap) {
bottomCorner = height - 1;
} else {
const topRightCorner = width - 1;
indices[index++] = topRightCorner;
indices[index++] = topRightCorner + length;
bottomCorner = width + height - 2;
}
indices[index++] = bottomCorner;
indices[index++] = bottomCorner + length;
if (!southCap) {
const bottomLeftCorner = width + bottomCorner - 1;
indices[index++] = bottomLeftCorner;
indices[index] = bottomLeftCorner + length;
}
geo.indices = indices;
return geo;
}
/**
* A description of the outline of a a cartographic rectangle on an ellipsoid centered at the origin.
*
* @alias RectangleOutlineGeometry
* @constructor
*
* @param {object} options Object with the following properties:
* @param {Rectangle} options.rectangle A cartographic rectangle with north, south, east and west properties in radians.
* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.default] The ellipsoid on which the rectangle lies.
* @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 {number} [options.height=0.0] The distance in meters between the rectangle and the ellipsoid surface.
* @param {number} [options.rotation=0.0] The rotation of the rectangle, in radians. A positive rotation is counter-clockwise.
* @param {number} [options.extrudedHeight] The distance in meters between the rectangle's extruded face and the ellipsoid surface.
*
* @exception {DeveloperError} <code>options.rectangle.north</code> must be in the interval [<code>-Pi/2</code>, <code>Pi/2</code>].
* @exception {DeveloperError} <code>options.rectangle.south</code> must be in the interval [<code>-Pi/2</code>, <code>Pi/2</code>].
* @exception {DeveloperError} <code>options.rectangle.east</code> must be in the interval [<code>-Pi</code>, <code>Pi</code>].
* @exception {DeveloperError} <code>options.rectangle.west</code> must be in the interval [<code>-Pi</code>, <code>Pi</code>].
* @exception {DeveloperError} <code>options.rectangle.north</code> must be greater than <code>rectangle.south</code>.
*
* @see RectangleOutlineGeometry#createGeometry
*
* @example
* const rectangle = new Cesium.RectangleOutlineGeometry({
* ellipsoid : Cesium.Ellipsoid.WGS84,
* rectangle : Cesium.Rectangle.fromDegrees(-80.0, 39.0, -74.0, 42.0),
* height : 10000.0
* });
* const geometry = Cesium.RectangleOutlineGeometry.createGeometry(rectangle);
*/
function RectangleOutlineGeometry(options) {
options = options ?? Frozen.EMPTY_OBJECT;
const rectangle = options.rectangle;
const granularity = options.granularity ?? CesiumMath.RADIANS_PER_DEGREE;
const ellipsoid = options.ellipsoid ?? Ellipsoid.default;
const rotation = options.rotation ?? 0.0;
//>>includeStart('debug', pragmas.debug);
if (!defined(rectangle)) {
throw new DeveloperError("rectangle is required.");
}
Rectangle._validate(rectangle);
if (rectangle.north < rectangle.south) {
throw new DeveloperError(
"options.rectangle.north must be greater than options.rectangle.south",
);
}
//>>includeEnd('debug');
const height = options.height ?? 0.0;
const extrudedHeight = options.extrudedHeight ?? height;
this._rectangle = Rectangle.clone(rectangle);
this._granularity = granularity;
this._ellipsoid = ellipsoid;
this._surfaceHeight = Math.max(height, extrudedHeight);
this._rotation = rotation;
this._extrudedHeight = Math.min(height, extrudedHeight);
this._offsetAttribute = options.offsetAttribute;
this._workerName = "createRectangleOutlineGeometry";
}
/**
* The number of elements used to pack the object into an array.
* @type {number}
*/
RectangleOutlineGeometry.packedLength =
Rectangle.packedLength + Ellipsoid.packedLength + 5;
/**
* Stores the provided instance into the provided array.
*
* @param {RectangleOutlineGeometry} 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
*/
RectangleOutlineGeometry.pack = function (value, array, startingIndex) {
//>>includeStart('debug', pragmas.debug);
if (!defined(value)) {
throw new DeveloperError("value is required");
}
if (!defined(array)) {
throw new DeveloperError("array is required");
}
//>>includeEnd('debug');
startingIndex = startingIndex ?? 0;
Rectangle.pack(value._rectangle, array, startingIndex);
startingIndex += Rectangle.packedLength;
Ellipsoid.pack(value._ellipsoid, array, startingIndex);
startingIndex += Ellipsoid.packedLength;
array[startingIndex++] = value._granularity;
array[startingIndex++] = value._surfaceHeight;
array[startingIndex++] = value._rotation;
array[startingIndex++] = value._extrudedHeight;
array[startingIndex] = value._offsetAttribute ?? -1;
return array;
};
const scratchRectangle = new Rectangle();
const scratchEllipsoid = Ellipsoid.clone(Ellipsoid.UNIT_SPHERE);
const scratchOptions = {
rectangle: scratchRectangle,
ellipsoid: scratchEllipsoid,
granularity: undefined,
height: undefined,
rotation: undefined,
extrudedHeight: 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 {RectangleOutlineGeometry} [result] The object into which to store the result.
* @returns {RectangleOutlineGeometry} The modified result parameter or a new RectangleOutlineGeometry instance if one was not provided.
*/
RectangleOutlineGeometry.unpack = function (array, startingIndex, result) {
//>>includeStart('debug', pragmas.debug);
if (!defined(array)) {
throw new DeveloperError("array is required");
}
//>>includeEnd('debug');
startingIndex = startingIndex ?? 0;
const rectangle = Rectangle.unpack(array, startingIndex, scratchRectangle);
startingIndex += Rectangle.packedLength;
const ellipsoid = Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
startingIndex += Ellipsoid.packedLength;
const granularity = array[startingIndex++];
const height = array[startingIndex++];
const rotation = array[startingIndex++];
const extrudedHeight = array[startingIndex++];
const offsetAttribute = array[startingIndex];
Eif (!defined(result)) {
scratchOptions.granularity = granularity;
scratchOptions.height = height;
scratchOptions.rotation = rotation;
scratchOptions.extrudedHeight = extrudedHeight;
scratchOptions.offsetAttribute =
offsetAttribute === -1 ? undefined : offsetAttribute;
return new RectangleOutlineGeometry(scratchOptions);
}
result._rectangle = Rectangle.clone(rectangle, result._rectangle);
result._ellipsoid = Ellipsoid.clone(ellipsoid, result._ellipsoid);
result._surfaceHeight = height;
result._rotation = rotation;
result._extrudedHeight = extrudedHeight;
result._offsetAttribute =
offsetAttribute === -1 ? undefined : offsetAttribute;
return result;
};
const nwScratch = new Cartographic();
/**
* Computes the geometric representation of an outline of a rectangle, including its vertices, indices, and a bounding sphere.
*
* @param {RectangleOutlineGeometry} rectangleGeometry A description of the rectangle outline.
* @returns {Geometry|undefined} The computed vertices and indices.
*
* @exception {DeveloperError} Rotated rectangle is invalid.
*/
RectangleOutlineGeometry.createGeometry = function (rectangleGeometry) {
const rectangle = rectangleGeometry._rectangle;
const ellipsoid = rectangleGeometry._ellipsoid;
const computedOptions = RectangleGeometryLibrary.computeOptions(
rectangle,
rectangleGeometry._granularity,
rectangleGeometry._rotation,
0,
rectangleScratch,
nwScratch,
);
let geometry;
let boundingSphere;
if (
CesiumMath.equalsEpsilon(
rectangle.north,
rectangle.south,
CesiumMath.EPSILON10,
) ||
CesiumMath.equalsEpsilon(
rectangle.east,
rectangle.west,
CesiumMath.EPSILON10,
)
) {
return undefined;
}
const surfaceHeight = rectangleGeometry._surfaceHeight;
const extrudedHeight = rectangleGeometry._extrudedHeight;
const extrude = !CesiumMath.equalsEpsilon(
surfaceHeight,
extrudedHeight,
0,
CesiumMath.EPSILON2,
);
let offsetValue;
if (extrude) {
geometry = constructExtrudedRectangle(rectangleGeometry, computedOptions);
if (defined(rectangleGeometry._offsetAttribute)) {
const size = geometry.attributes.position.values.length / 3;
let offsetAttribute = new Uint8Array(size);
if (rectangleGeometry._offsetAttribute === GeometryOffsetAttribute.TOP) {
offsetAttribute = offsetAttribute.fill(1, 0, size / 2);
} else {
offsetValue =
rectangleGeometry._offsetAttribute === GeometryOffsetAttribute.NONE
? 0
: 1;
offsetAttribute = offsetAttribute.fill(offsetValue);
}
geometry.attributes.applyOffset = new GeometryAttribute({
componentDatatype: ComponentDatatype.UNSIGNED_BYTE,
componentsPerAttribute: 1,
values: offsetAttribute,
});
}
const topBS = BoundingSphere.fromRectangle3D(
rectangle,
ellipsoid,
surfaceHeight,
topBoundingSphere,
);
const bottomBS = BoundingSphere.fromRectangle3D(
rectangle,
ellipsoid,
extrudedHeight,
bottomBoundingSphere,
);
boundingSphere = BoundingSphere.union(topBS, bottomBS);
} else {
geometry = constructRectangle(rectangleGeometry, computedOptions);
geometry.attributes.position.values = PolygonPipeline.scaleToGeodeticHeight(
geometry.attributes.position.values,
surfaceHeight,
ellipsoid,
false,
);
if (defined(rectangleGeometry._offsetAttribute)) {
const length = geometry.attributes.position.values.length;
offsetValue =
rectangleGeometry._offsetAttribute === GeometryOffsetAttribute.NONE
? 0
: 1;
const applyOffset = new Uint8Array(length / 3).fill(offsetValue);
geometry.attributes.applyOffset = new GeometryAttribute({
componentDatatype: ComponentDatatype.UNSIGNED_BYTE,
componentsPerAttribute: 1,
values: applyOffset,
});
}
boundingSphere = BoundingSphere.fromRectangle3D(
rectangle,
ellipsoid,
surfaceHeight,
);
}
return new Geometry({
attributes: geometry.attributes,
indices: geometry.indices,
primitiveType: PrimitiveType.LINES,
boundingSphere: boundingSphere,
offsetAttribute: rectangleGeometry._offsetAttribute,
});
};
export default RectangleOutlineGeometry;
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