You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1181 lines
36 KiB
JavaScript
1181 lines
36 KiB
JavaScript
import Check from "./Check.js";
|
|
import defaultValue from "./defaultValue.js";
|
|
import defined from "./defined.js";
|
|
import DeveloperError from "./DeveloperError.js";
|
|
import CesiumMath from "./Math.js";
|
|
|
|
/**
|
|
* A 3D Cartesian point.
|
|
* @alias Cartesian3
|
|
* @constructor
|
|
*
|
|
* @param {Number} [x=0.0] The X component.
|
|
* @param {Number} [y=0.0] The Y component.
|
|
* @param {Number} [z=0.0] The Z component.
|
|
*
|
|
* @see Cartesian2
|
|
* @see Cartesian4
|
|
* @see Packable
|
|
*/
|
|
function Cartesian3(x, y, z) {
|
|
/**
|
|
* The X component.
|
|
* @type {Number}
|
|
* @default 0.0
|
|
*/
|
|
this.x = defaultValue(x, 0.0);
|
|
|
|
/**
|
|
* The Y component.
|
|
* @type {Number}
|
|
* @default 0.0
|
|
*/
|
|
this.y = defaultValue(y, 0.0);
|
|
|
|
/**
|
|
* The Z component.
|
|
* @type {Number}
|
|
* @default 0.0
|
|
*/
|
|
this.z = defaultValue(z, 0.0);
|
|
}
|
|
|
|
/**
|
|
* Converts the provided Spherical into Cartesian3 coordinates.
|
|
*
|
|
* @param {Spherical} spherical The Spherical to be converted to Cartesian3.
|
|
* @param {Cartesian3} [result] The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter or a new Cartesian3 instance if one was not provided.
|
|
*/
|
|
Cartesian3.fromSpherical = function (spherical, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("spherical", spherical);
|
|
//>>includeEnd('debug');
|
|
|
|
if (!defined(result)) {
|
|
result = new Cartesian3();
|
|
}
|
|
|
|
var clock = spherical.clock;
|
|
var cone = spherical.cone;
|
|
var magnitude = defaultValue(spherical.magnitude, 1.0);
|
|
var radial = magnitude * Math.sin(cone);
|
|
result.x = radial * Math.cos(clock);
|
|
result.y = radial * Math.sin(clock);
|
|
result.z = magnitude * Math.cos(cone);
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Creates a Cartesian3 instance from x, y and z coordinates.
|
|
*
|
|
* @param {Number} x The x coordinate.
|
|
* @param {Number} y The y coordinate.
|
|
* @param {Number} z The z coordinate.
|
|
* @param {Cartesian3} [result] The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter or a new Cartesian3 instance if one was not provided.
|
|
*/
|
|
Cartesian3.fromElements = function (x, y, z, result) {
|
|
if (!defined(result)) {
|
|
return new Cartesian3(x, y, z);
|
|
}
|
|
|
|
result.x = x;
|
|
result.y = y;
|
|
result.z = z;
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Duplicates a Cartesian3 instance.
|
|
*
|
|
* @param {Cartesian3} cartesian The Cartesian to duplicate.
|
|
* @param {Cartesian3} [result] The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter or a new Cartesian3 instance if one was not provided. (Returns undefined if cartesian is undefined)
|
|
*/
|
|
Cartesian3.clone = function (cartesian, result) {
|
|
if (!defined(cartesian)) {
|
|
return undefined;
|
|
}
|
|
if (!defined(result)) {
|
|
return new Cartesian3(cartesian.x, cartesian.y, cartesian.z);
|
|
}
|
|
|
|
result.x = cartesian.x;
|
|
result.y = cartesian.y;
|
|
result.z = cartesian.z;
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Creates a Cartesian3 instance from an existing Cartesian4. This simply takes the
|
|
* x, y, and z properties of the Cartesian4 and drops w.
|
|
* @function
|
|
*
|
|
* @param {Cartesian4} cartesian The Cartesian4 instance to create a Cartesian3 instance from.
|
|
* @param {Cartesian3} [result] The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter or a new Cartesian3 instance if one was not provided.
|
|
*/
|
|
Cartesian3.fromCartesian4 = Cartesian3.clone;
|
|
|
|
/**
|
|
* The number of elements used to pack the object into an array.
|
|
* @type {Number}
|
|
*/
|
|
Cartesian3.packedLength = 3;
|
|
|
|
/**
|
|
* Stores the provided instance into the provided array.
|
|
*
|
|
* @param {Cartesian3} 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
|
|
*/
|
|
Cartesian3.pack = function (value, array, startingIndex) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("value", value);
|
|
Check.defined("array", array);
|
|
//>>includeEnd('debug');
|
|
|
|
startingIndex = defaultValue(startingIndex, 0);
|
|
|
|
array[startingIndex++] = value.x;
|
|
array[startingIndex++] = value.y;
|
|
array[startingIndex] = value.z;
|
|
|
|
return array;
|
|
};
|
|
|
|
/**
|
|
* 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 {Cartesian3} [result] The object into which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter or a new Cartesian3 instance if one was not provided.
|
|
*/
|
|
Cartesian3.unpack = function (array, startingIndex, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.defined("array", array);
|
|
//>>includeEnd('debug');
|
|
|
|
startingIndex = defaultValue(startingIndex, 0);
|
|
|
|
if (!defined(result)) {
|
|
result = new Cartesian3();
|
|
}
|
|
result.x = array[startingIndex++];
|
|
result.y = array[startingIndex++];
|
|
result.z = array[startingIndex];
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Flattens an array of Cartesian3s into an array of components.
|
|
*
|
|
* @param {Cartesian3[]} array The array of cartesians to pack.
|
|
* @param {Number[]} [result] The array onto which to store the result. If this is a typed array, it must have array.length * 3 components, else a {@link DeveloperError} will be thrown. If it is a regular array, it will be resized to have (array.length * 3) elements.
|
|
* @returns {Number[]} The packed array.
|
|
*/
|
|
Cartesian3.packArray = function (array, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.defined("array", array);
|
|
//>>includeEnd('debug');
|
|
|
|
var length = array.length;
|
|
var resultLength = length * 3;
|
|
if (!defined(result)) {
|
|
result = new Array(resultLength);
|
|
} else if (!Array.isArray(result) && result.length !== resultLength) {
|
|
throw new DeveloperError(
|
|
"If result is a typed array, it must have exactly array.length * 3 elements"
|
|
);
|
|
} else if (result.length !== resultLength) {
|
|
result.length = resultLength;
|
|
}
|
|
|
|
for (var i = 0; i < length; ++i) {
|
|
Cartesian3.pack(array[i], result, i * 3);
|
|
}
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Unpacks an array of cartesian components into an array of Cartesian3s.
|
|
*
|
|
* @param {Number[]} array The array of components to unpack.
|
|
* @param {Cartesian3[]} [result] The array onto which to store the result.
|
|
* @returns {Cartesian3[]} The unpacked array.
|
|
*/
|
|
Cartesian3.unpackArray = function (array, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.defined("array", array);
|
|
Check.typeOf.number.greaterThanOrEquals("array.length", array.length, 3);
|
|
if (array.length % 3 !== 0) {
|
|
throw new DeveloperError("array length must be a multiple of 3.");
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
var length = array.length;
|
|
if (!defined(result)) {
|
|
result = new Array(length / 3);
|
|
} else {
|
|
result.length = length / 3;
|
|
}
|
|
|
|
for (var i = 0; i < length; i += 3) {
|
|
var index = i / 3;
|
|
result[index] = Cartesian3.unpack(array, i, result[index]);
|
|
}
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Creates a Cartesian3 from three consecutive elements in an array.
|
|
* @function
|
|
*
|
|
* @param {Number[]} array The array whose three consecutive elements correspond to the x, y, and z components, respectively.
|
|
* @param {Number} [startingIndex=0] The offset into the array of the first element, which corresponds to the x component.
|
|
* @param {Cartesian3} [result] The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter or a new Cartesian3 instance if one was not provided.
|
|
*
|
|
* @example
|
|
* // Create a Cartesian3 with (1.0, 2.0, 3.0)
|
|
* var v = [1.0, 2.0, 3.0];
|
|
* var p = Cesium.Cartesian3.fromArray(v);
|
|
*
|
|
* // Create a Cartesian3 with (1.0, 2.0, 3.0) using an offset into an array
|
|
* var v2 = [0.0, 0.0, 1.0, 2.0, 3.0];
|
|
* var p2 = Cesium.Cartesian3.fromArray(v2, 2);
|
|
*/
|
|
Cartesian3.fromArray = Cartesian3.unpack;
|
|
|
|
/**
|
|
* Computes the value of the maximum component for the supplied Cartesian.
|
|
*
|
|
* @param {Cartesian3} cartesian The cartesian to use.
|
|
* @returns {Number} The value of the maximum component.
|
|
*/
|
|
Cartesian3.maximumComponent = function (cartesian) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("cartesian", cartesian);
|
|
//>>includeEnd('debug');
|
|
|
|
return Math.max(cartesian.x, cartesian.y, cartesian.z);
|
|
};
|
|
|
|
/**
|
|
* Computes the value of the minimum component for the supplied Cartesian.
|
|
*
|
|
* @param {Cartesian3} cartesian The cartesian to use.
|
|
* @returns {Number} The value of the minimum component.
|
|
*/
|
|
Cartesian3.minimumComponent = function (cartesian) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("cartesian", cartesian);
|
|
//>>includeEnd('debug');
|
|
|
|
return Math.min(cartesian.x, cartesian.y, cartesian.z);
|
|
};
|
|
|
|
/**
|
|
* Compares two Cartesians and computes a Cartesian which contains the minimum components of the supplied Cartesians.
|
|
*
|
|
* @param {Cartesian3} first A cartesian to compare.
|
|
* @param {Cartesian3} second A cartesian to compare.
|
|
* @param {Cartesian3} result The object into which to store the result.
|
|
* @returns {Cartesian3} A cartesian with the minimum components.
|
|
*/
|
|
Cartesian3.minimumByComponent = function (first, second, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("first", first);
|
|
Check.typeOf.object("second", second);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
result.x = Math.min(first.x, second.x);
|
|
result.y = Math.min(first.y, second.y);
|
|
result.z = Math.min(first.z, second.z);
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Compares two Cartesians and computes a Cartesian which contains the maximum components of the supplied Cartesians.
|
|
*
|
|
* @param {Cartesian3} first A cartesian to compare.
|
|
* @param {Cartesian3} second A cartesian to compare.
|
|
* @param {Cartesian3} result The object into which to store the result.
|
|
* @returns {Cartesian3} A cartesian with the maximum components.
|
|
*/
|
|
Cartesian3.maximumByComponent = function (first, second, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("first", first);
|
|
Check.typeOf.object("second", second);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
result.x = Math.max(first.x, second.x);
|
|
result.y = Math.max(first.y, second.y);
|
|
result.z = Math.max(first.z, second.z);
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Computes the provided Cartesian's squared magnitude.
|
|
*
|
|
* @param {Cartesian3} cartesian The Cartesian instance whose squared magnitude is to be computed.
|
|
* @returns {Number} The squared magnitude.
|
|
*/
|
|
Cartesian3.magnitudeSquared = function (cartesian) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("cartesian", cartesian);
|
|
//>>includeEnd('debug');
|
|
|
|
return (
|
|
cartesian.x * cartesian.x +
|
|
cartesian.y * cartesian.y +
|
|
cartesian.z * cartesian.z
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Computes the Cartesian's magnitude (length).
|
|
*
|
|
* @param {Cartesian3} cartesian The Cartesian instance whose magnitude is to be computed.
|
|
* @returns {Number} The magnitude.
|
|
*/
|
|
Cartesian3.magnitude = function (cartesian) {
|
|
return Math.sqrt(Cartesian3.magnitudeSquared(cartesian));
|
|
};
|
|
|
|
var distanceScratch = new Cartesian3();
|
|
|
|
/**
|
|
* Computes the distance between two points.
|
|
*
|
|
* @param {Cartesian3} left The first point to compute the distance from.
|
|
* @param {Cartesian3} right The second point to compute the distance to.
|
|
* @returns {Number} The distance between two points.
|
|
*
|
|
* @example
|
|
* // Returns 1.0
|
|
* var d = Cesium.Cartesian3.distance(new Cesium.Cartesian3(1.0, 0.0, 0.0), new Cesium.Cartesian3(2.0, 0.0, 0.0));
|
|
*/
|
|
Cartesian3.distance = function (left, right) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("left", left);
|
|
Check.typeOf.object("right", right);
|
|
//>>includeEnd('debug');
|
|
|
|
Cartesian3.subtract(left, right, distanceScratch);
|
|
return Cartesian3.magnitude(distanceScratch);
|
|
};
|
|
|
|
/**
|
|
* Computes the squared distance between two points. Comparing squared distances
|
|
* using this function is more efficient than comparing distances using {@link Cartesian3#distance}.
|
|
*
|
|
* @param {Cartesian3} left The first point to compute the distance from.
|
|
* @param {Cartesian3} right The second point to compute the distance to.
|
|
* @returns {Number} The distance between two points.
|
|
*
|
|
* @example
|
|
* // Returns 4.0, not 2.0
|
|
* var d = Cesium.Cartesian3.distanceSquared(new Cesium.Cartesian3(1.0, 0.0, 0.0), new Cesium.Cartesian3(3.0, 0.0, 0.0));
|
|
*/
|
|
Cartesian3.distanceSquared = function (left, right) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("left", left);
|
|
Check.typeOf.object("right", right);
|
|
//>>includeEnd('debug');
|
|
|
|
Cartesian3.subtract(left, right, distanceScratch);
|
|
return Cartesian3.magnitudeSquared(distanceScratch);
|
|
};
|
|
|
|
/**
|
|
* Computes the normalized form of the supplied Cartesian.
|
|
*
|
|
* @param {Cartesian3} cartesian The Cartesian to be normalized.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter.
|
|
*/
|
|
Cartesian3.normalize = function (cartesian, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("cartesian", cartesian);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
var magnitude = Cartesian3.magnitude(cartesian);
|
|
|
|
result.x = cartesian.x / magnitude;
|
|
result.y = cartesian.y / magnitude;
|
|
result.z = cartesian.z / magnitude;
|
|
|
|
//>>includeStart('debug', pragmas.debug);
|
|
if (isNaN(result.x) || isNaN(result.y) || isNaN(result.z)) {
|
|
throw new DeveloperError("normalized result is not a number");
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Computes the dot (scalar) product of two Cartesians.
|
|
*
|
|
* @param {Cartesian3} left The first Cartesian.
|
|
* @param {Cartesian3} right The second Cartesian.
|
|
* @returns {Number} The dot product.
|
|
*/
|
|
Cartesian3.dot = function (left, right) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("left", left);
|
|
Check.typeOf.object("right", right);
|
|
//>>includeEnd('debug');
|
|
|
|
return left.x * right.x + left.y * right.y + left.z * right.z;
|
|
};
|
|
|
|
/**
|
|
* Computes the componentwise product of two Cartesians.
|
|
*
|
|
* @param {Cartesian3} left The first Cartesian.
|
|
* @param {Cartesian3} right The second Cartesian.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter.
|
|
*/
|
|
Cartesian3.multiplyComponents = function (left, right, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("left", left);
|
|
Check.typeOf.object("right", right);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
result.x = left.x * right.x;
|
|
result.y = left.y * right.y;
|
|
result.z = left.z * right.z;
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Computes the componentwise quotient of two Cartesians.
|
|
*
|
|
* @param {Cartesian3} left The first Cartesian.
|
|
* @param {Cartesian3} right The second Cartesian.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter.
|
|
*/
|
|
Cartesian3.divideComponents = function (left, right, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("left", left);
|
|
Check.typeOf.object("right", right);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
result.x = left.x / right.x;
|
|
result.y = left.y / right.y;
|
|
result.z = left.z / right.z;
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Computes the componentwise sum of two Cartesians.
|
|
*
|
|
* @param {Cartesian3} left The first Cartesian.
|
|
* @param {Cartesian3} right The second Cartesian.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter.
|
|
*/
|
|
Cartesian3.add = function (left, right, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("left", left);
|
|
Check.typeOf.object("right", right);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
result.x = left.x + right.x;
|
|
result.y = left.y + right.y;
|
|
result.z = left.z + right.z;
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Computes the componentwise difference of two Cartesians.
|
|
*
|
|
* @param {Cartesian3} left The first Cartesian.
|
|
* @param {Cartesian3} right The second Cartesian.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter.
|
|
*/
|
|
Cartesian3.subtract = function (left, right, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("left", left);
|
|
Check.typeOf.object("right", right);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
result.x = left.x - right.x;
|
|
result.y = left.y - right.y;
|
|
result.z = left.z - right.z;
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Multiplies the provided Cartesian componentwise by the provided scalar.
|
|
*
|
|
* @param {Cartesian3} cartesian The Cartesian to be scaled.
|
|
* @param {Number} scalar The scalar to multiply with.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter.
|
|
*/
|
|
Cartesian3.multiplyByScalar = function (cartesian, scalar, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("cartesian", cartesian);
|
|
Check.typeOf.number("scalar", scalar);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
result.x = cartesian.x * scalar;
|
|
result.y = cartesian.y * scalar;
|
|
result.z = cartesian.z * scalar;
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Divides the provided Cartesian componentwise by the provided scalar.
|
|
*
|
|
* @param {Cartesian3} cartesian The Cartesian to be divided.
|
|
* @param {Number} scalar The scalar to divide by.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter.
|
|
*/
|
|
Cartesian3.divideByScalar = function (cartesian, scalar, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("cartesian", cartesian);
|
|
Check.typeOf.number("scalar", scalar);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
result.x = cartesian.x / scalar;
|
|
result.y = cartesian.y / scalar;
|
|
result.z = cartesian.z / scalar;
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Negates the provided Cartesian.
|
|
*
|
|
* @param {Cartesian3} cartesian The Cartesian to be negated.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter.
|
|
*/
|
|
Cartesian3.negate = function (cartesian, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("cartesian", cartesian);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
result.x = -cartesian.x;
|
|
result.y = -cartesian.y;
|
|
result.z = -cartesian.z;
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Computes the absolute value of the provided Cartesian.
|
|
*
|
|
* @param {Cartesian3} cartesian The Cartesian whose absolute value is to be computed.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter.
|
|
*/
|
|
Cartesian3.abs = function (cartesian, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("cartesian", cartesian);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
result.x = Math.abs(cartesian.x);
|
|
result.y = Math.abs(cartesian.y);
|
|
result.z = Math.abs(cartesian.z);
|
|
return result;
|
|
};
|
|
|
|
var lerpScratch = new Cartesian3();
|
|
/**
|
|
* Computes the linear interpolation or extrapolation at t using the provided cartesians.
|
|
*
|
|
* @param {Cartesian3} start The value corresponding to t at 0.0.
|
|
* @param {Cartesian3} end The value corresponding to t at 1.0.
|
|
* @param {Number} t The point along t at which to interpolate.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter.
|
|
*/
|
|
Cartesian3.lerp = function (start, end, t, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("start", start);
|
|
Check.typeOf.object("end", end);
|
|
Check.typeOf.number("t", t);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
Cartesian3.multiplyByScalar(end, t, lerpScratch);
|
|
result = Cartesian3.multiplyByScalar(start, 1.0 - t, result);
|
|
return Cartesian3.add(lerpScratch, result, result);
|
|
};
|
|
|
|
var angleBetweenScratch = new Cartesian3();
|
|
var angleBetweenScratch2 = new Cartesian3();
|
|
/**
|
|
* Returns the angle, in radians, between the provided Cartesians.
|
|
*
|
|
* @param {Cartesian3} left The first Cartesian.
|
|
* @param {Cartesian3} right The second Cartesian.
|
|
* @returns {Number} The angle between the Cartesians.
|
|
*/
|
|
Cartesian3.angleBetween = function (left, right) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("left", left);
|
|
Check.typeOf.object("right", right);
|
|
//>>includeEnd('debug');
|
|
|
|
Cartesian3.normalize(left, angleBetweenScratch);
|
|
Cartesian3.normalize(right, angleBetweenScratch2);
|
|
var cosine = Cartesian3.dot(angleBetweenScratch, angleBetweenScratch2);
|
|
var sine = Cartesian3.magnitude(
|
|
Cartesian3.cross(
|
|
angleBetweenScratch,
|
|
angleBetweenScratch2,
|
|
angleBetweenScratch
|
|
)
|
|
);
|
|
return Math.atan2(sine, cosine);
|
|
};
|
|
|
|
var mostOrthogonalAxisScratch = new Cartesian3();
|
|
/**
|
|
* Returns the axis that is most orthogonal to the provided Cartesian.
|
|
*
|
|
* @param {Cartesian3} cartesian The Cartesian on which to find the most orthogonal axis.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The most orthogonal axis.
|
|
*/
|
|
Cartesian3.mostOrthogonalAxis = function (cartesian, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("cartesian", cartesian);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
var f = Cartesian3.normalize(cartesian, mostOrthogonalAxisScratch);
|
|
Cartesian3.abs(f, f);
|
|
|
|
if (f.x <= f.y) {
|
|
if (f.x <= f.z) {
|
|
result = Cartesian3.clone(Cartesian3.UNIT_X, result);
|
|
} else {
|
|
result = Cartesian3.clone(Cartesian3.UNIT_Z, result);
|
|
}
|
|
} else if (f.y <= f.z) {
|
|
result = Cartesian3.clone(Cartesian3.UNIT_Y, result);
|
|
} else {
|
|
result = Cartesian3.clone(Cartesian3.UNIT_Z, result);
|
|
}
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Projects vector a onto vector b
|
|
* @param {Cartesian3} a The vector that needs projecting
|
|
* @param {Cartesian3} b The vector to project onto
|
|
* @param {Cartesian3} result The result cartesian
|
|
* @returns {Cartesian3} The modified result parameter
|
|
*/
|
|
Cartesian3.projectVector = function (a, b, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.defined("a", a);
|
|
Check.defined("b", b);
|
|
Check.defined("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
var scalar = Cartesian3.dot(a, b) / Cartesian3.dot(b, b);
|
|
return Cartesian3.multiplyByScalar(b, scalar, result);
|
|
};
|
|
|
|
/**
|
|
* Compares the provided Cartesians componentwise and returns
|
|
* <code>true</code> if they are equal, <code>false</code> otherwise.
|
|
*
|
|
* @param {Cartesian3} [left] The first Cartesian.
|
|
* @param {Cartesian3} [right] The second Cartesian.
|
|
* @returns {Boolean} <code>true</code> if left and right are equal, <code>false</code> otherwise.
|
|
*/
|
|
Cartesian3.equals = function (left, right) {
|
|
return (
|
|
left === right ||
|
|
(defined(left) &&
|
|
defined(right) &&
|
|
left.x === right.x &&
|
|
left.y === right.y &&
|
|
left.z === right.z)
|
|
);
|
|
};
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
Cartesian3.equalsArray = function (cartesian, array, offset) {
|
|
return (
|
|
cartesian.x === array[offset] &&
|
|
cartesian.y === array[offset + 1] &&
|
|
cartesian.z === array[offset + 2]
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Compares the provided Cartesians componentwise and returns
|
|
* <code>true</code> if they pass an absolute or relative tolerance test,
|
|
* <code>false</code> otherwise.
|
|
*
|
|
* @param {Cartesian3} [left] The first Cartesian.
|
|
* @param {Cartesian3} [right] The second Cartesian.
|
|
* @param {Number} [relativeEpsilon=0] The relative epsilon tolerance to use for equality testing.
|
|
* @param {Number} [absoluteEpsilon=relativeEpsilon] The absolute epsilon tolerance to use for equality testing.
|
|
* @returns {Boolean} <code>true</code> if left and right are within the provided epsilon, <code>false</code> otherwise.
|
|
*/
|
|
Cartesian3.equalsEpsilon = function (
|
|
left,
|
|
right,
|
|
relativeEpsilon,
|
|
absoluteEpsilon
|
|
) {
|
|
return (
|
|
left === right ||
|
|
(defined(left) &&
|
|
defined(right) &&
|
|
CesiumMath.equalsEpsilon(
|
|
left.x,
|
|
right.x,
|
|
relativeEpsilon,
|
|
absoluteEpsilon
|
|
) &&
|
|
CesiumMath.equalsEpsilon(
|
|
left.y,
|
|
right.y,
|
|
relativeEpsilon,
|
|
absoluteEpsilon
|
|
) &&
|
|
CesiumMath.equalsEpsilon(
|
|
left.z,
|
|
right.z,
|
|
relativeEpsilon,
|
|
absoluteEpsilon
|
|
))
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Computes the cross (outer) product of two Cartesians.
|
|
*
|
|
* @param {Cartesian3} left The first Cartesian.
|
|
* @param {Cartesian3} right The second Cartesian.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The cross product.
|
|
*/
|
|
Cartesian3.cross = function (left, right, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("left", left);
|
|
Check.typeOf.object("right", right);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
var leftX = left.x;
|
|
var leftY = left.y;
|
|
var leftZ = left.z;
|
|
var rightX = right.x;
|
|
var rightY = right.y;
|
|
var rightZ = right.z;
|
|
|
|
var x = leftY * rightZ - leftZ * rightY;
|
|
var y = leftZ * rightX - leftX * rightZ;
|
|
var z = leftX * rightY - leftY * rightX;
|
|
|
|
result.x = x;
|
|
result.y = y;
|
|
result.z = z;
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Computes the midpoint between the right and left Cartesian.
|
|
* @param {Cartesian3} left The first Cartesian.
|
|
* @param {Cartesian3} right The second Cartesian.
|
|
* @param {Cartesian3} result The object onto which to store the result.
|
|
* @returns {Cartesian3} The midpoint.
|
|
*/
|
|
Cartesian3.midpoint = function (left, right, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.object("left", left);
|
|
Check.typeOf.object("right", right);
|
|
Check.typeOf.object("result", result);
|
|
//>>includeEnd('debug');
|
|
|
|
result.x = (left.x + right.x) * 0.5;
|
|
result.y = (left.y + right.y) * 0.5;
|
|
result.z = (left.z + right.z) * 0.5;
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Returns a Cartesian3 position from longitude and latitude values given in degrees.
|
|
*
|
|
* @param {Number} longitude The longitude, in degrees
|
|
* @param {Number} latitude The latitude, in degrees
|
|
* @param {Number} [height=0.0] The height, in meters, above the ellipsoid.
|
|
* @param {Ellipsoid} [ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the position lies.
|
|
* @param {Cartesian3} [result] The object onto which to store the result.
|
|
* @returns {Cartesian3} The position
|
|
*
|
|
* @example
|
|
* var position = Cesium.Cartesian3.fromDegrees(-115.0, 37.0);
|
|
*/
|
|
Cartesian3.fromDegrees = function (
|
|
longitude,
|
|
latitude,
|
|
height,
|
|
ellipsoid,
|
|
result
|
|
) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.number("longitude", longitude);
|
|
Check.typeOf.number("latitude", latitude);
|
|
//>>includeEnd('debug');
|
|
|
|
longitude = CesiumMath.toRadians(longitude);
|
|
latitude = CesiumMath.toRadians(latitude);
|
|
return Cartesian3.fromRadians(longitude, latitude, height, ellipsoid, result);
|
|
};
|
|
|
|
var scratchN = new Cartesian3();
|
|
var scratchK = new Cartesian3();
|
|
var wgs84RadiiSquared = new Cartesian3(
|
|
6378137.0 * 6378137.0,
|
|
6378137.0 * 6378137.0,
|
|
6356752.3142451793 * 6356752.3142451793
|
|
);
|
|
|
|
/**
|
|
* Returns a Cartesian3 position from longitude and latitude values given in radians.
|
|
*
|
|
* @param {Number} longitude The longitude, in radians
|
|
* @param {Number} latitude The latitude, in radians
|
|
* @param {Number} [height=0.0] The height, in meters, above the ellipsoid.
|
|
* @param {Ellipsoid} [ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the position lies.
|
|
* @param {Cartesian3} [result] The object onto which to store the result.
|
|
* @returns {Cartesian3} The position
|
|
*
|
|
* @example
|
|
* var position = Cesium.Cartesian3.fromRadians(-2.007, 0.645);
|
|
*/
|
|
Cartesian3.fromRadians = function (
|
|
longitude,
|
|
latitude,
|
|
height,
|
|
ellipsoid,
|
|
result
|
|
) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.typeOf.number("longitude", longitude);
|
|
Check.typeOf.number("latitude", latitude);
|
|
//>>includeEnd('debug');
|
|
|
|
height = defaultValue(height, 0.0);
|
|
var radiiSquared = defined(ellipsoid)
|
|
? ellipsoid.radiiSquared
|
|
: wgs84RadiiSquared;
|
|
|
|
var cosLatitude = Math.cos(latitude);
|
|
scratchN.x = cosLatitude * Math.cos(longitude);
|
|
scratchN.y = cosLatitude * Math.sin(longitude);
|
|
scratchN.z = Math.sin(latitude);
|
|
scratchN = Cartesian3.normalize(scratchN, scratchN);
|
|
|
|
Cartesian3.multiplyComponents(radiiSquared, scratchN, scratchK);
|
|
var gamma = Math.sqrt(Cartesian3.dot(scratchN, scratchK));
|
|
scratchK = Cartesian3.divideByScalar(scratchK, gamma, scratchK);
|
|
scratchN = Cartesian3.multiplyByScalar(scratchN, height, scratchN);
|
|
|
|
if (!defined(result)) {
|
|
result = new Cartesian3();
|
|
}
|
|
return Cartesian3.add(scratchK, scratchN, result);
|
|
};
|
|
|
|
/**
|
|
* Returns an array of Cartesian3 positions given an array of longitude and latitude values given in degrees.
|
|
*
|
|
* @param {Number[]} coordinates A list of longitude and latitude values. Values alternate [longitude, latitude, longitude, latitude...].
|
|
* @param {Ellipsoid} [ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the coordinates lie.
|
|
* @param {Cartesian3[]} [result] An array of Cartesian3 objects to store the result.
|
|
* @returns {Cartesian3[]} The array of positions.
|
|
*
|
|
* @example
|
|
* var positions = Cesium.Cartesian3.fromDegreesArray([-115.0, 37.0, -107.0, 33.0]);
|
|
*/
|
|
Cartesian3.fromDegreesArray = function (coordinates, ellipsoid, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.defined("coordinates", coordinates);
|
|
if (coordinates.length < 2 || coordinates.length % 2 !== 0) {
|
|
throw new DeveloperError(
|
|
"the number of coordinates must be a multiple of 2 and at least 2"
|
|
);
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
var length = coordinates.length;
|
|
if (!defined(result)) {
|
|
result = new Array(length / 2);
|
|
} else {
|
|
result.length = length / 2;
|
|
}
|
|
|
|
for (var i = 0; i < length; i += 2) {
|
|
var longitude = coordinates[i];
|
|
var latitude = coordinates[i + 1];
|
|
var index = i / 2;
|
|
result[index] = Cartesian3.fromDegrees(
|
|
longitude,
|
|
latitude,
|
|
0,
|
|
ellipsoid,
|
|
result[index]
|
|
);
|
|
}
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Returns an array of Cartesian3 positions given an array of longitude and latitude values given in radians.
|
|
*
|
|
* @param {Number[]} coordinates A list of longitude and latitude values. Values alternate [longitude, latitude, longitude, latitude...].
|
|
* @param {Ellipsoid} [ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the coordinates lie.
|
|
* @param {Cartesian3[]} [result] An array of Cartesian3 objects to store the result.
|
|
* @returns {Cartesian3[]} The array of positions.
|
|
*
|
|
* @example
|
|
* var positions = Cesium.Cartesian3.fromRadiansArray([-2.007, 0.645, -1.867, .575]);
|
|
*/
|
|
Cartesian3.fromRadiansArray = function (coordinates, ellipsoid, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.defined("coordinates", coordinates);
|
|
if (coordinates.length < 2 || coordinates.length % 2 !== 0) {
|
|
throw new DeveloperError(
|
|
"the number of coordinates must be a multiple of 2 and at least 2"
|
|
);
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
var length = coordinates.length;
|
|
if (!defined(result)) {
|
|
result = new Array(length / 2);
|
|
} else {
|
|
result.length = length / 2;
|
|
}
|
|
|
|
for (var i = 0; i < length; i += 2) {
|
|
var longitude = coordinates[i];
|
|
var latitude = coordinates[i + 1];
|
|
var index = i / 2;
|
|
result[index] = Cartesian3.fromRadians(
|
|
longitude,
|
|
latitude,
|
|
0,
|
|
ellipsoid,
|
|
result[index]
|
|
);
|
|
}
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Returns an array of Cartesian3 positions given an array of longitude, latitude and height values where longitude and latitude are given in degrees.
|
|
*
|
|
* @param {Number[]} coordinates A list of longitude, latitude and height values. Values alternate [longitude, latitude, height, longitude, latitude, height...].
|
|
* @param {Ellipsoid} [ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the position lies.
|
|
* @param {Cartesian3[]} [result] An array of Cartesian3 objects to store the result.
|
|
* @returns {Cartesian3[]} The array of positions.
|
|
*
|
|
* @example
|
|
* var positions = Cesium.Cartesian3.fromDegreesArrayHeights([-115.0, 37.0, 100000.0, -107.0, 33.0, 150000.0]);
|
|
*/
|
|
Cartesian3.fromDegreesArrayHeights = function (coordinates, ellipsoid, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.defined("coordinates", coordinates);
|
|
if (coordinates.length < 3 || coordinates.length % 3 !== 0) {
|
|
throw new DeveloperError(
|
|
"the number of coordinates must be a multiple of 3 and at least 3"
|
|
);
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
var length = coordinates.length;
|
|
if (!defined(result)) {
|
|
result = new Array(length / 3);
|
|
} else {
|
|
result.length = length / 3;
|
|
}
|
|
|
|
for (var i = 0; i < length; i += 3) {
|
|
var longitude = coordinates[i];
|
|
var latitude = coordinates[i + 1];
|
|
var height = coordinates[i + 2];
|
|
var index = i / 3;
|
|
result[index] = Cartesian3.fromDegrees(
|
|
longitude,
|
|
latitude,
|
|
height,
|
|
ellipsoid,
|
|
result[index]
|
|
);
|
|
}
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* Returns an array of Cartesian3 positions given an array of longitude, latitude and height values where longitude and latitude are given in radians.
|
|
*
|
|
* @param {Number[]} coordinates A list of longitude, latitude and height values. Values alternate [longitude, latitude, height, longitude, latitude, height...].
|
|
* @param {Ellipsoid} [ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the position lies.
|
|
* @param {Cartesian3[]} [result] An array of Cartesian3 objects to store the result.
|
|
* @returns {Cartesian3[]} The array of positions.
|
|
*
|
|
* @example
|
|
* var positions = Cesium.Cartesian3.fromRadiansArrayHeights([-2.007, 0.645, 100000.0, -1.867, .575, 150000.0]);
|
|
*/
|
|
Cartesian3.fromRadiansArrayHeights = function (coordinates, ellipsoid, result) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
Check.defined("coordinates", coordinates);
|
|
if (coordinates.length < 3 || coordinates.length % 3 !== 0) {
|
|
throw new DeveloperError(
|
|
"the number of coordinates must be a multiple of 3 and at least 3"
|
|
);
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
var length = coordinates.length;
|
|
if (!defined(result)) {
|
|
result = new Array(length / 3);
|
|
} else {
|
|
result.length = length / 3;
|
|
}
|
|
|
|
for (var i = 0; i < length; i += 3) {
|
|
var longitude = coordinates[i];
|
|
var latitude = coordinates[i + 1];
|
|
var height = coordinates[i + 2];
|
|
var index = i / 3;
|
|
result[index] = Cartesian3.fromRadians(
|
|
longitude,
|
|
latitude,
|
|
height,
|
|
ellipsoid,
|
|
result[index]
|
|
);
|
|
}
|
|
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* An immutable Cartesian3 instance initialized to (0.0, 0.0, 0.0).
|
|
*
|
|
* @type {Cartesian3}
|
|
* @constant
|
|
*/
|
|
Cartesian3.ZERO = Object.freeze(new Cartesian3(0.0, 0.0, 0.0));
|
|
|
|
/**
|
|
* An immutable Cartesian3 instance initialized to (1.0, 0.0, 0.0).
|
|
*
|
|
* @type {Cartesian3}
|
|
* @constant
|
|
*/
|
|
Cartesian3.UNIT_X = Object.freeze(new Cartesian3(1.0, 0.0, 0.0));
|
|
|
|
/**
|
|
* An immutable Cartesian3 instance initialized to (0.0, 1.0, 0.0).
|
|
*
|
|
* @type {Cartesian3}
|
|
* @constant
|
|
*/
|
|
Cartesian3.UNIT_Y = Object.freeze(new Cartesian3(0.0, 1.0, 0.0));
|
|
|
|
/**
|
|
* An immutable Cartesian3 instance initialized to (0.0, 0.0, 1.0).
|
|
*
|
|
* @type {Cartesian3}
|
|
* @constant
|
|
*/
|
|
Cartesian3.UNIT_Z = Object.freeze(new Cartesian3(0.0, 0.0, 1.0));
|
|
|
|
/**
|
|
* Duplicates this Cartesian3 instance.
|
|
*
|
|
* @param {Cartesian3} [result] The object onto which to store the result.
|
|
* @returns {Cartesian3} The modified result parameter or a new Cartesian3 instance if one was not provided.
|
|
*/
|
|
Cartesian3.prototype.clone = function (result) {
|
|
return Cartesian3.clone(this, result);
|
|
};
|
|
|
|
/**
|
|
* Compares this Cartesian against the provided Cartesian componentwise and returns
|
|
* <code>true</code> if they are equal, <code>false</code> otherwise.
|
|
*
|
|
* @param {Cartesian3} [right] The right hand side Cartesian.
|
|
* @returns {Boolean} <code>true</code> if they are equal, <code>false</code> otherwise.
|
|
*/
|
|
Cartesian3.prototype.equals = function (right) {
|
|
return Cartesian3.equals(this, right);
|
|
};
|
|
|
|
/**
|
|
* Compares this Cartesian against the provided Cartesian componentwise and returns
|
|
* <code>true</code> if they pass an absolute or relative tolerance test,
|
|
* <code>false</code> otherwise.
|
|
*
|
|
* @param {Cartesian3} [right] The right hand side Cartesian.
|
|
* @param {Number} [relativeEpsilon=0] The relative epsilon tolerance to use for equality testing.
|
|
* @param {Number} [absoluteEpsilon=relativeEpsilon] The absolute epsilon tolerance to use for equality testing.
|
|
* @returns {Boolean} <code>true</code> if they are within the provided epsilon, <code>false</code> otherwise.
|
|
*/
|
|
Cartesian3.prototype.equalsEpsilon = function (
|
|
right,
|
|
relativeEpsilon,
|
|
absoluteEpsilon
|
|
) {
|
|
return Cartesian3.equalsEpsilon(
|
|
this,
|
|
right,
|
|
relativeEpsilon,
|
|
absoluteEpsilon
|
|
);
|
|
};
|
|
|
|
/**
|
|
* Creates a string representing this Cartesian in the format '(x, y, z)'.
|
|
*
|
|
* @returns {String} A string representing this Cartesian in the format '(x, y, z)'.
|
|
*/
|
|
Cartesian3.prototype.toString = function () {
|
|
return "(" + this.x + ", " + this.y + ", " + this.z + ")";
|
|
};
|
|
export default Cartesian3;
|