Preventing mouse selection where objects clipped with material clipping?

Questions
,
1

Hi,
I’m clipping my objects with material clipping. I’m also selecting objects with a mouse.

Now, what is the cleanest way to prevent picking with the mouse where the material is being clipped?

I’m using this for material clipping:

var clipPlane = new THREE.Plane();
clipPlane.setFromCoplanarPoints(
	new THREE.Vector3(...), 
	new THREE.Vector3(...),
	new THREE.Vector3(...)
);
var object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: 0xffffff, clippingPlanes: [clipPlane]} ) );

And this for mouse picking:

// set raycaster ray to mouse and camera
raycaster.setFromCamera( editorMouse, editorCamera );

// detect intersects
var intersects = raycaster.intersectObjects( editorScene.children, true);

if ( intersects.length > 0 ) 
{
    if ( INTERSECTED != intersects[0].object ) 
    {
        if ( INTERSECTED ) INTERSECTED.material.emissive.setHex( INTERSECTED.currentHex );

        INTERSECTED = intersects[0].object;
        INTERSECTED.currentHex = INTERSECTED.material.emissive.getHex();
        INTERSECTED.material.emissive.setHex( 0xff0000 );
    }

}
else
{
    if ( INTERSECTED ) INTERSECTED.material.emissive.setHex( INTERSECTED.currentHex );

    INTERSECTED = null;        
}

Help well appreciated!
Thanks.

2

It’s my presumption ill to construct my own ray and test against each clip plane.
Just checking!

Anyway, if your bored, check out my portals engine I wrote a while back in GL as a proof of concept/ it can be done project.:

Portals Engine

2 Likes
3

Wow, this video is amazing! Especially the part where lights/shadows can enter the portals. This is the first example of non-euclidean geometry I’ve seen implemented in Three.js. Congrats!

1 Like
4

No, it’s win32 OpenGL. sorry!

Though I’m sort of rebuilding in three.js, so you never know.

5

Any ideas on this one, ill be needing the feature soon.

6

Hello! Hope you’re doing well. Any chance you may have figured this out yet ? I am in a similar fix. I need intersections of the mouse raycaster with only the stencil or capped surface of a clipping plane.

1 Like
7

This is working on my case.

1 Like