Ray - Cesium Documentation

Ray

new Ray

Represents a ray that extends infinitely from the provided origin in the provided direction.

Parameters:

Name	Type	Argument	Default	Description
`origin`	Cartesian3	<optional>	Cartesian3.ZERO	The origin of the ray.
`direction`	Cartesian3	<optional>	Cartesian3.ZERO	The direction of the ray.

Source:

/Source/Core/Ray.js

Members

direction :Cartesian3

The direction of the ray.

origin :Cartesian3

The origin of the ray.

Default Value:

Cartesian3.ZERO

Methods

getPoint

Computes the point along the ray given by r(t) = o + t*d, where o is the origin of the ray and d is the direction.

Parameters:

Name	Type	Argument	Description
`t`	Number		A scalar value.
`result`	Cartesian3	<optional>	The object in which the result will be stored.

Returns:

The modified result parameter, or a new instance if none was provided.

Example

//Get the first intersection point of a ray and an ellipsoid.
var intersection = Cesium.IntersectionTests.rayEllipsoid(ray, ellipsoid);
var point = ray.getPoint(intersection.start);