Can't stop mesh from disappearing on certain camera angles!

[Simplisticated_Development]

Hey everyone.

I recently made a rowboat mesh in Pro builder by cutting off a few of the cylinder’s faces. But now, certain camera angles disable sides of my new rowboat. How do I fix this? I tried occlusion/culling settings and other suggested remedies, but nothing is working.

Thank you!

[CodeSmile]

Is this a single mesh, or multiple?

Check the mesh boundaries. It may help to visualize it with gizmos for example. When a mesh has incorrect or zero bounds the mesh will only be visible when its pivot point is in the camera frustum.

On the MeshFilter double-click the mesh reference to bring up its details in the inspector, including info about the mesh bounds.

[Simplisticated_Development]

@CodeSmile

Is this a single mesh, or multiple?

Check the mesh boundaries. It may help to visualize it with gizmos for example. When a mesh has incorrect or zero bounds the mesh will only be visible when its pivot point is in the camera frustum.

On the MeshFilter double-click the mesh reference to bring up its details in the inspector, including info about the mesh bounds.

One mesh. Here is a photo from the conclusion of the steps you listed:

So this mesh has a bound of 0…what do I do now?

Thanks!

[Simplisticated_Development]

@CodeSmile

Is this a single mesh, or multiple?

Check the mesh boundaries. It may help to visualize it with gizmos for example. When a mesh has incorrect or zero bounds the mesh will only be visible when its pivot point is in the camera frustum.

On the MeshFilter double-click the mesh reference to bring up its details in the inspector, including info about the mesh bounds.

It seems like the camera only shows the mesh’s outside, because when viewing from certain angles, the inward-facing sections of the mesh are invisible.

[Simplisticated_Development]

@CodeSmile

Is this a single mesh, or multiple?

Check the mesh boundaries. It may help to visualize it with gizmos for example. When a mesh has incorrect or zero bounds the mesh will only be visible when its pivot point is in the camera frustum.

On the MeshFilter double-click the mesh reference to bring up its details in the inspector, including info about the mesh bounds.

Here is an example of a simple cylinder that has only half of its faces.

To be clear, there are supposed to be faces on the other side of the object, but they are invisible.

[Kurt-Dekker]

@Simplisticated_Development

It seems like the camera only shows the mesh’s outside, because when viewing from certain angles, the inward-facing sections of the mesh are invisible.

That’s how it works. This is standard backface culling.

Even if it showed you the faces, their lighting would be wrong because the normals face the other way.

You can dupe your geometry and flip the faces yourself, the cheapest and simplest way to go.

Fix it in Blender3D this way:

[Simplisticated_Development]

@Kurt-Dekker

That’s how it works. This is standard backface culling.

Even if it showed you the faces, their lighting would be wrong because the normals face the other way.

You can dupe your geometry and flip the faces yourself, the cheapest and simplest way to go.

Fix it in Blender3D this way:

Thanks for your answer, Kurt Dekker.

I am not able to use your steps as I do not have blender. This prefab was made in unity with Probuilder by removing half of a cylinder’s faces (as I said above). Are there any fixes in Unity?

Thanks!

[Kurt-Dekker]

@Simplisticated_Development

Are there any fixes in Unity?

Yes! Go back to probuilder and either dupe and flip those faces, or else build the interior of your rowboat as you would any other interior geometry.

[Simplisticated_Development]

Thanks! All is working now! Another solution was reversing the face’s normals…

[CodeSmile]

Btw the mesh bounds aren’t zero, the size seems perfectly okay. The center can be at (0,0,0) that wouldn’t be an issue, the size is what matters.

[nonyx7]

Recalculate normals and bounds.
mesh.RecalculateNormals()
mesh.RecalculateBounds()