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Since the original curves start in the mouth, they are not really facing
in the right direction for modeling the eye lids. In order for the lines
to follow the direction of the Orbicularis Oculi, the circular
muscle circumscribing the eye, it makes more sense to cut a hole for
the eye. The eye lids are modeled separately and then welded into the
eye hole.
Figure 7-34
shows the area around the eye that should now be modeled. It can be
made from a spline cage or a series of concentric points that are connected
to form polygons. Be sure to add an extra row of points for the thickness
of the eyelid. These will form a shape that extends into the eyeball.
Figure
7-34 The area around the eyeball is modeled separately.
The next step is
to cut holes for the eye sockets. Select the points around the perimeter
of the eyelid shape that you just modeled (Figure 7-35).
Figure
7-35 Points along the perimeter of the eyelid mesh are selected
and copied.
Copy and paste
the points into another layer. Select the points in order and make a
polygon out of them. Make the eye lid model visible underneath this
layer. Enlarge the polygon somewhat like the one in Figure 7-36.
Figure
7-36 After copying and pasting the points into another layer, they
are made into a polygon which is then enlarged.
Make the head mesh
visible in the front layer and hide all the polygons except for those
around the eye socket. Make the eye socket polygon visible underneath
the layer with the face (Figure 7-37). Use a 2D drilling operation
to cut a hole out for the eye socket.
Figure
7-37 The outline of the eye socket is drilled onto the face mesh
and then cut away.
After drilling
the eye socket hole, weld any extra stray points around the hole opening.
Paste the previously modeled eye lid object into the layer containing
the head (Figure 7-38).
Figure
7-38 Once the eye socket hole is cut out, then paste the eyelid
model into the face mesh layer.
Select the points
around the perimeter of the eye lid object and the edge of the eye socket
hole. Create connecting polygons between these two objects so that the
eye lids are now part of the same mesh as the face (Figure 7-39).
Connect or weld any extra points so that you only have three or four-sided
polygons.
Figure
7-39 The upper eye lid folds under creating a line that should be
modeled by splitting the polygons with extra points.
Figure 7-39
also shows how the eye lid folds under creating a thick line. It is
very important to model this part of the eye lid since it gives a lot
of character to the face. Insert extra points in an oval direction around
the eye lid, select them in order, and then split the polygons. Once
you have several extra half oval lines on the lid, then you can move
them forward and back to form the eye lid fold. Approximately three
or four sets of semi-oval lines make up this form.
The next step is
to model the eyeball.
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