`Raycaster.setFromCamera` Error in OrthographicCamera.

https://github.com/mrdoob/three.js/blob/dev/src/core/Raycaster.js#L85:78

if ( ( camera && camera.isOrthographicCamera ) ) {
	this.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera ); // set origin in plane of camera
	this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );
}

when camera.near + camera.far === 0

Ray initialization error.

I think the code should be

if ( ( camera && camera.isOrthographicCamera ) ) {
	this.ray.origin.set( coords.x, coords.y, -1 ).unproject( camera ); // set origin in plane of camera
	this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );
}

Do not know if my understanding is wrong.

(sorry,My English is not good, these are from Google Translate.)

[WestLangley]

Closing. three.js only supports non-negative values for the near plane.

[Mugen87]

AFAIK, Unity does not allow negative values for near. I would prefer a policy similar to other popular engines.