FACEGEN ARTIST: DAZ Studio Exported Morph Problem

[Les]

The plugin works great!  However, I discovered the eyeballs become distorted causing the eyelids to track improperly when moved, essentially leaving gaps.

[FaceGen Guru]

Les, thank you for this detailed report.

Our spatial deformation approach does warp the eyes, so this is a limitation of FaceGen we hope to deal with in future.

Best wishes,

[Les]

Thank you for the reply.  I'll write a DS script to revert the affected vertices.

[Les]

On Sunday, March 27, 2016 at 2:27:20 PM UTC-7, Les wrote:

The plugin works great!  However, I discovered the eyeballs become distorted causing the eyelids to track improperly when moved, essentially leaving gaps.

In case it helps anyone, this is my lazy-man's fix to the eye deformation.

Remove the following id blocks from the morph file to bypass any eye deformations.

Example:

[ 3337, 0.1301969, -0.0407410, -0.1015968 ],

~

[ 3711, 0.2125492, 0.1123810, -0.0949588 ],

The ID is the first number

Genesis 1

lEye: 3337 to 3711

rEye: 12652 to 13026

Genesis 2 Male / Female

lEye: 2179 to 9295

rEye: 13011 to 19961

[FaceGen Guru]

Les, thanks so much for your help.

Note though that if you keep the eye vertices fixed, the eyes may no longer align with the eyelids (which morph to match the face), even in the base pose.

Best wishes,

[Les]

Eye alignment is easier to fix than making the eyeball spherical again.

[judy]

Hello,

I've noticed not only are the morped eyes warped, but the gums and teeth seem to be warped too.

Surely, there must be a way to remove the shearing component from the final morphed vertices, while keeping translation, rotation, and uniform scaling intact.  For both the eyes and gums/teeth.

[judy]

Instead of deforming the actual eye vertices, could you not replace them with an orthogonal axis?

Deform the axis vectors with your spatial deformation, and then remove shearing component from the final matrix.  Use the morphed matrix to transform the eye vertices without any shearing.

[FaceGen Guru]

Hello Judy,

Since different people have different shaped mouths, FaceGen will change the shape of the teeth and gums to accomodate differently shaped mouths.

Keeping the eyes spherical is desirable and we intend to work on that, although it won't make it into the next release.

The reason this turns out to be not so easy is that the spherical eyeball must somehow be made to fit seamlessly with the eyelid shape for all faces, and the eyelid shape is driven by our shape statistics which do not respect things like local spherical constraints.

Best wishes,

 

[judy]

Hello,

Are there any FaceGen program settings under "Modify -> Shape" that can help reduce or remove eyeball warping? Something that can be zeroed out or set to a neutral position?  Something that only affects the eye shape and not the overall face shape?

I'm looking at settings like "Eyes - tilt inward / outward".  Does zeroing that out help?

I'm not too concerned about getting a perfectly spherical eyeball, as the eye surface is over 50% hidden anyway. Just the visible part, like the cornea, is important.  It should be as circular as possible.

[FaceGen Guru]

Hello Judy,

Not currently, the shape sliders are fairly interconnected so that would be difficult.

Best wishes,