Problem with Rotation

[MichaelHilgers]

Hello,

i have a problem with substract, union an intersect when the parent Groups of a mesh are rotated.
The position of the meshs in World are not apply before doing the substract.

Please view my code Sample:

`
private csgSample(){

var scene = this.baseScene.scene;


const camera = new THREE.PerspectiveCamera(
  75,
  window.innerWidth / window.innerHeight,
  0.1,
  1000

)
camera.position.x = 0.5
camera.position.y = 2
camera.position.z = 2.5
camera.up.set(0, 0, 1);

this.baseScene.camera = camera;
this.baseScene.controls = new OrbitControls(camera, this.baseScene.renderer.domElement);

  //create a cube and sphere and intersect them
  const cubeMesh = new THREE.Mesh(
    new THREE.BoxGeometry(2, 2, 2),
    new THREE.MeshPhongMaterial({ color: 0xff0000,
      opacity: 0.5,
      transparent:true, })
)
const sphereMesh = new THREE.Mesh(
    new THREE.SphereGeometry(1.45, 8, 8),
    new THREE.MeshPhongMaterial({ color: 0x0000ff ,
      opacity: 0.5,
      transparent:true,})
)

var g = new THREE.Group();
g.position.set(0.5, 0, 0.5);
g.rotation.x = 15;
cubeMesh.position.set(0, 0, 1);
g.add(cubeMesh);
scene.add(g)

sphereMesh.position.set(0, 0, 0)
scene.add(sphereMesh)

scene.updateMatrix();
scene.updateMatrixWorld(true);

var meshResult  = CSG.subtract( cubeMesh, sphereMesh);

meshResult.material = new THREE.MeshPhongMaterial({
    color: 0xff00ff
})
//g.add(meshResult);
meshResult.position.set(0, 0, -5)
scene.add(meshResult)

scene.updateMatrix();
scene.updateMatrixWorld(true);

}
`

What i doing wrong?

Thanks

[manthrax]

I think attaching the mesh to a group might be breaking things... probably a bug..:)
but could you try with attaching the mesh to the scene instead and setting its rotation/position to verify?
Thanks for reporting this..

[MichaelHilgers]

Hi

i have fix it, by removing the object from parent and attaching to scene.
After this, it works.

[manthrax]

Ok great.. Appreciate you researching it for me!
I will add this to my to-do list for the next major release. If this is a showstopping issue for you, we can discuss it further.. I'm leaving this open for now so that others with the same issue can find it.
Thanks again!

[maksimsea]

Привет

Я исправил это, удалив объект из родителя и прикрепив его к сцене. После этого работает.

Hi

i have fix it, by removing the object from parent and attaching to scene. After this, it works.

thank you, it works!

text from image:

private reparentObject3D (object, oldParent, newParent)
{
object.matrixWorld.decompose(object.position, object.quaternion, object.scale);
oldParent.remove(object);
newParent.add(object);
object.parent = newParent;
object.updateMatrix();
object.updateMatrixWorld();
}