Triangle

new Triangle(a?: Vector3, b?: Vector3, c?: Vector3)

THREE equivalent: THREE.Triangle

Three-vertex triangle with barycentric coordinate helpers, area computation, and intersection tests.

Properties

Name	Type	Description
a	Vector3	First vertex.
b	Vector3	Second vertex.
c	Vector3	Third vertex.

Methods

Method	Description
set(a: Vector3, b: Vector3, c: Vector3): this	Sets all three vertices.
getArea(): number	Returns the area of the triangle.
getNormal(target?: Vector3): Vector3	Returns the face normal (unit length).
getBarycoord(point: Vector3, target?: Vector3): Vector3	Returns the barycentric coordinates of a point relative to this triangle.
containsPoint(point: Vector3): boolean	Returns true if the point lies inside the triangle.
isFrontFacing(direction: Vector3): boolean	Returns true if the triangle faces the given direction.
closestPointToPoint(point: Vector3, target?: Vector3): Vector3	Returns the closest point on the triangle to the given point.
clone(): Triangle	Returns a new Triangle with the same vertices.