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import Cartographic from "./Cartographic.js";
import defined from "./defined.js";
import DeveloperError from "./DeveloperError.js";
import Ellipsoid from "./Ellipsoid.js";
import GeographicProjection from "./GeographicProjection.js";
import CesiumMath from "./Math.js";
import Matrix2 from "./Matrix2.js";
import Rectangle from "./Rectangle.js";
const cos = Math.cos;
const sin = Math.sin;
const sqrt = Math.sqrt;
/**
* @private
*/
const RectangleGeometryLibrary = {};
/**
* @private
*/
RectangleGeometryLibrary.computePosition = function (
computedOptions,
ellipsoid,
computeST,
row,
col,
position,
st,
) {
const radiiSquared = ellipsoid.radiiSquared;
const nwCorner = computedOptions.nwCorner;
const rectangle = computedOptions.boundingRectangle;
let stLatitude =
nwCorner.latitude -
computedOptions.granYCos * row +
col * computedOptions.granXSin;
const cosLatitude = cos(stLatitude);
const nZ = sin(stLatitude);
const kZ = radiiSquared.z * nZ;
let stLongitude =
nwCorner.longitude +
row * computedOptions.granYSin +
col * computedOptions.granXCos;
const nX = cosLatitude * cos(stLongitude);
const nY = cosLatitude * sin(stLongitude);
const kX = radiiSquared.x * nX;
const kY = radiiSquared.y * nY;
const gamma = sqrt(kX * nX + kY * nY + kZ * nZ);
position.x = kX / gamma;
position.y = kY / gamma;
position.z = kZ / gamma;
if (computeST) {
const stNwCorner = computedOptions.stNwCorner;
if (defined(stNwCorner)) {
stLatitude =
stNwCorner.latitude -
computedOptions.stGranYCos * row +
col * computedOptions.stGranXSin;
stLongitude =
stNwCorner.longitude +
row * computedOptions.stGranYSin +
col * computedOptions.stGranXCos;
st.x = (stLongitude - computedOptions.stWest) * computedOptions.lonScalar;
st.y = (stLatitude - computedOptions.stSouth) * computedOptions.latScalar;
} else {
st.x = (stLongitude - rectangle.west) * computedOptions.lonScalar;
st.y = (stLatitude - rectangle.south) * computedOptions.latScalar;
}
}
};
const rotationMatrixScratch = new Matrix2();
let nwCartesian = new Cartesian3();
const centerScratch = new Cartographic();
let centerCartesian = new Cartesian3();
const proj = new GeographicProjection();
function getRotationOptions(
nwCorner,
rotation,
granularityX,
granularityY,
center,
width,
height,
) {
const cosRotation = Math.cos(rotation);
const granYCos = granularityY * cosRotation;
const granXCos = granularityX * cosRotation;
const sinRotation = Math.sin(rotation);
const granYSin = granularityY * sinRotation;
const granXSin = granularityX * sinRotation;
proj._ellipsoid = Ellipsoid.default;
nwCartesian = proj.project(nwCorner, nwCartesian);
nwCartesian = Cartesian3.subtract(nwCartesian, centerCartesian, nwCartesian);
const rotationMatrix = Matrix2.fromRotation(rotation, rotationMatrixScratch);
nwCartesian = Matrix2.multiplyByVector(
rotationMatrix,
nwCartesian,
nwCartesian,
);
nwCartesian = Cartesian3.add(nwCartesian, centerCartesian, nwCartesian);
nwCorner = proj.unproject(nwCartesian, nwCorner);
width -= 1;
height -= 1;
const latitude = nwCorner.latitude;
const latitude0 = latitude + width * granXSin;
const latitude1 = latitude - granYCos * height;
const latitude2 = latitude - granYCos * height + width * granXSin;
const north = Math.max(latitude, latitude0, latitude1, latitude2);
const south = Math.min(latitude, latitude0, latitude1, latitude2);
const longitude = nwCorner.longitude;
const longitude0 = longitude + width * granXCos;
const longitude1 = longitude + height * granYSin;
const longitude2 = longitude + height * granYSin + width * granXCos;
const east = Math.max(longitude, longitude0, longitude1, longitude2);
const west = Math.min(longitude, longitude0, longitude1, longitude2);
return {
north: north,
south: south,
east: east,
west: west,
granYCos: granYCos,
granYSin: granYSin,
granXCos: granXCos,
granXSin: granXSin,
nwCorner: nwCorner,
};
}
/**
* @private
*/
RectangleGeometryLibrary.computeOptions = function (
rectangle,
granularity,
rotation,
stRotation,
boundingRectangleScratch,
nwCornerResult,
stNwCornerResult,
) {
let east = rectangle.east;
let west = rectangle.west;
let north = rectangle.north;
let south = rectangle.south;
let northCap = false;
let southCap = false;
if (north === CesiumMath.PI_OVER_TWO) {
northCap = true;
}
if (south === -CesiumMath.PI_OVER_TWO) {
southCap = true;
}
let dx;
const dy = north - south;
if (west > east) {
dx = CesiumMath.TWO_PI - west + east;
} else {
dx = east - west;
}
const width = Math.ceil(dx / granularity) + 1;
const height = Math.ceil(dy / granularity) + 1;
const granularityX = dx / (width - 1);
const granularityY = dy / (height - 1);
const nwCorner = Rectangle.northwest(rectangle, nwCornerResult);
const center = Rectangle.center(rectangle, centerScratch);
if (rotation !== 0 || stRotation !== 0) {
if (center.longitude < nwCorner.longitude) {
center.longitude += CesiumMath.TWO_PI;
}
proj._ellipsoid = Ellipsoid.default;
centerCartesian = proj.project(center, centerCartesian);
}
const granYCos = granularityY;
const granXCos = granularityX;
const granYSin = 0.0;
const granXSin = 0.0;
const boundingRectangle = Rectangle.clone(
rectangle,
boundingRectangleScratch,
);
const computedOptions = {
granYCos: granYCos,
granYSin: granYSin,
granXCos: granXCos,
granXSin: granXSin,
nwCorner: nwCorner,
boundingRectangle: boundingRectangle,
width: width,
height: height,
northCap: northCap,
southCap: southCap,
};
if (rotation !== 0) {
const rotationOptions = getRotationOptions(
nwCorner,
rotation,
granularityX,
granularityY,
center,
width,
height,
);
north = rotationOptions.north;
south = rotationOptions.south;
east = rotationOptions.east;
west = rotationOptions.west;
//>>includeStart('debug', pragmas.debug);
if (
north < -CesiumMath.PI_OVER_TWO ||
north > CesiumMath.PI_OVER_TWO ||
south < -CesiumMath.PI_OVER_TWO ||
south > CesiumMath.PI_OVER_TWO
) {
throw new DeveloperError(
"Rotated rectangle is invalid. It crosses over either the north or south pole.",
);
}
//>>includeEnd('debug');
computedOptions.granYCos = rotationOptions.granYCos;
computedOptions.granYSin = rotationOptions.granYSin;
computedOptions.granXCos = rotationOptions.granXCos;
computedOptions.granXSin = rotationOptions.granXSin;
boundingRectangle.north = north;
boundingRectangle.south = south;
boundingRectangle.east = east;
boundingRectangle.west = west;
}
if (stRotation !== 0) {
rotation = rotation - stRotation;
const stNwCorner = Rectangle.northwest(boundingRectangle, stNwCornerResult);
const stRotationOptions = getRotationOptions(
stNwCorner,
rotation,
granularityX,
granularityY,
center,
width,
height,
);
computedOptions.stGranYCos = stRotationOptions.granYCos;
computedOptions.stGranXCos = stRotationOptions.granXCos;
computedOptions.stGranYSin = stRotationOptions.granYSin;
computedOptions.stGranXSin = stRotationOptions.granXSin;
computedOptions.stNwCorner = stNwCorner;
computedOptions.stWest = stRotationOptions.west;
computedOptions.stSouth = stRotationOptions.south;
}
return computedOptions;
};
export default RectangleGeometryLibrary;
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