Since the topic digital hair is quite complicated and time consuming I've decided to share some workflows I've been discovering over the years as a grooming technical director to make the lives of hair and grooming tds easier.

This tutorial demonstrates a very easy and fast Maya workflow to generate maya curves for complex hairstyles to be used as guide curves in a given hair solution.

It's suitable for any hairlength from short to long.

No plugin required.

Curves can be exported and used in many 3D packages like 3dsMax, Softimage XSI and many more.

Total work time : 2-3 hours

So in this case I used a nurbs cape to paint the curves on but you can also use a poly cape and use a pfx pen brush to paint on the geo and at the end convert the strokes to nurbs curves.

Here a short description for both methods...

Nurbs:
1. Model volume mesh
2. Make live
3. Draw curves using pencil curve tool
4. Select all curves and use command edit curves/dublicate surface curves
5. rebuild curves with curvature option checked a few times till the ammount of knots don't change so much.
6. Select all curves and execute command edit curves/selection/select first CV on curve/ and then shift select the actual head geo and execute script xyShrinkWrap which can be found on creativecrash.com
7. Tweak curves

Poly:
1. Model volume mesh
2. Assign UVs
3. paintfx/make paintable
4. Select pen brush for pfx and start drawing the curves
5. select all resulting pfx strokes and go to modify/convert/pfx strokes to curves
6.Rebuild curves with curvature option checked a few times till the ammount of knots don't change so much.
7. Select all curves and execute command edit curves/selection/select first CV on curve/ and then shift select the actual head geo and execute script xyShrinkWrap which can be found on creativecrash.com
8. Tweak curves

j vimeo.com/33487648

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