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Slicing Unity's sphere results in meshes with uncovered holes #36
Description
Slicing a sphere created with Unity's right click>3D Object>Sphere, with identity transform with planeWorldPosition = Vector3.zero and planeWorldDirection = Vector3.right results in hemisphere meshes with holes.
When I rotate the sphere 5 degrees along the y axis, it doesn't happen.
This happens in master at commit b93d68c Unity Version 2019.3.5f1 (d691e07d38ef) Personal
This doesn't happen on release 1.0.0
Script used for slicing:
using EzySlice;
using UnityEngine;
public class SliceOnClick : MonoBehaviour
{
public Material innerMaterial;
// Start is called before the first frame update
void Start()
{
}
// Update is called once per frame
void Update()
{
}
void OnMouseDown()
{
Debug.Log("CUTTING");
if (this.Slice(Vector3.zero, Vector3.right) == null)
{
Debug.Log("FAILED");
}
Debug.Log("WORKED");
}
public GameObject[] Slice(Vector3 planeWorldPosition, Vector3 planeWorldDirection)
{
return this.gameObject.SliceInstantiate(planeWorldPosition, planeWorldDirection, CalculateCustomRegion(0, 0, 512, 512), this.innerMaterial);
}
public TextureRegion CalculateCustomRegion(int px, int py, int width, int height)
{
return this.innerMaterial.GetTextureRegion(px, py, width, height);
}
}
PD: Thank you for making this project!
Activity
DavidArayan commentedon May 19, 2020
Thank you for the bug report and extensive information! I will investigate to see whats going on.
pruebasssaa commentedon May 28, 2020
I also have this problem, it doesn't happen with threading branch. Check the
List<Vector3> intPointsand with the same model, the master branch has a count of 0. It mainly happens with complex geometry.It may also be processing well, but you have forgotten to place a material. That is, not even this slot is available in the MeshRenderer, only 1, (the visible material).
PurpleSlayerFish commentedon Feb 21, 2022
Hey, guys.
I also have the same problem and i found the reason, why this happens.
@DavidArayan, Maybe it will help you fix them.
This happens, when cutting plane exactly crosses one or more vertexes of a mesh.
For example, i have a fruit cutting game, and i replaced my mesh with unity standard primitive cube. I turned my cube mesh to 45 degrees and set cutting plane position exactly in the middle of a cube just like on screenshot.
And i sliced this.
UP: i use last framework version with my Unity 2020.3.1f1
UP2: We love your framework so much, David.
michail-p commentedon Jul 6, 2023
anyone fixed this?
XaHDpE commentedon May 14, 2024
Anybody?)
evgenykralko commentedon Mar 14, 2025
This happens when one of the vertices is exactly on the plane. I faced the same issue and fixed it by changing the logic a little bit. When first vertice is on the plane, check second and third vertice as well to make the right decision
EzySlice/Slicer.cs