Facial rigging - PowerPoint Presentation

Slide1

Facial rigging

By MZ

mengz1@andrew.cmu.eduSlide2

This

Demo Includes

Elements and structure in a basic facial rigging

Some workflow improvement

Brow ( clusters, curves, paint weight skills

);

Eye

( IK, locators, Aim constrains, Controls)

Blends shapesSlide3

Elements and structure in a basic facial rigging

Find the circle center.

Use Point

contrain

( second follow first)

Pay attention to the eye.Slide4

brow

Curves-

 clusters influence of the clusters to the

curveinfluence

of the curves to the skin

Select the surface, shift select the curves. Leave use geometry checked on. If we use joint we’d like to turn it down. Default weight zero.

Curves and clusters underscore the upper jawSlide5

Picture 1: Influence

of the clusters to the curveSlide6

eye

Rig

the eye



IK handles

 take them underscored the upper jaw bone.

Front view Make curves

 center pivot

snap at the IK handle drag to the right place

Freeze transformation rename  center control (control both curves)

Point constrain  remove point constrain  rename and

freeze transformation take the side controls

patrents

To center control

Clean the attributes controls +

Ik

handles( choose

ikRPsolver

) 

point

constrain Slide7

eye

We want full control of the eye, so the eye’s control won’t be affected by other

Animation controls.

We want the orientation of the eyes targeting the center of the eye group the side

Control reset settings of aim constrain  set a world up vector to avoid flipping. Slide8

eye

Fleshy eye

–when the eye balls rotates, the eye lid moves a little bit to simulate real eyes.

Shift the eye lip while the eye ball

rotates

.

Create a locator in the center of the eye ball.

Orient

Surface selected > sculpt > match position of the locator < parent the sculpt to the locator Slide9

Make it Blink:

[ Change orientation of the joints of the lip to make sure the

two joints moves in symmetry

Direction so tha

t when we change the Z rotate value together, we got the symmetry movement.] Slide10

ModifyAdd attributes( left_upper_lid

,

left_lower_lip

,

right_upper

lip, right _

lower_lip

) to the middle curve  Choose

Keyable

 go to windows  connection editor load the middle cure for the left, load the lip joints for the right as showed in picture

2

match the attributes as picture

3:

Picture 2

Picture 3Slide11

Blendshape

BaseObject

 duplicate  move aside (

targetObject

)

Change the shape of

TargetObject

( Don’t change the topology)

 What would be the next? Slide12

You may think: bind all the target object to the base object.

That is :

shift+select

the Target object in order, at last the base the base object

 create

blendshape

Slide13

The problem is: Y

ou

can’t add more target after

binding since the head is always attached with the body part.

And sometimes you need to take a

reference.Slide14

A better way: Use the attribute attachment.

1. create a target object (T1)as the bridge of base object and other target objects. Create a joint and bind

picture

4Slide15

2. select (T1), shift + Base Object + create deformers



blend shape

(make sure the deformation order is Front of chain under the blend shape options), showed in

picture 4

picture

5Slide16

To create more blend shapes, you just need to duplicate the T1. Shift +select the Target object in order, at last the T1

 create blend

shape. You may want to use the soft modification tool to create the blend shapes. Showed in the picture 6.

picture

6: soft modification tool Slide17

The next you may be interested in: Talking circle Set driven keys to make controls Slide18

Thanks !

Any questions, send me an Email:

mengz1@andrew.cmu.edu