Styling (Tangle, Droop, Frizz, Curl and Kink)

Sasquatch hair mode lets you explicitly define the shape of your fibers. But for short hair and fur, you don't want to do this, you want the computer to do the work for you! Luckily Sasquatch gives you procedural ways to change the shape of your fibers, bending, curving, and randomizing them.

The first control, Tangle, randomizes the direction of the fibers so they start growing from the surface at random angles. A short crew-cut doesn't have much Tangle; it mostly sticks straight out from your head. Grass has a lot of tangle, since each blade grows in its own direction.This section has many control names like "Kink" and "Tangle" which have vague definitions in English. It's hard to remember exactly what Tangle does, but it's still better than calling it "The Randomized Root Angle Control" which isn't any better and too long anyway.

Increasing Tangle ( 0%, 30%, 60%, 90% )

Droop bends your fibers downwards (in LightWave's -Y direction). The droop strength can be different for the root and tip of the fiber. Usually you want only the tip to bend, but if the fiber is especially thin or heavy, you may want the root to bend too. In real life long, thin fibers tend to droop a lot more than short coarse ones.

Increasing Root and Tip Droop ( 0%, 30%, 60%, 90% )

Increasing Tip Droop alone ( 0%, 30%, 60%, 90% )

Frizz is a random wiggle. It doesn't make a straight nor a smoothly curved fiber, but one that wanders randomly. This effect is very common, and a small amount of frizz gives nearly all scenes realistic randomness. Of course you can increase the number to very high values and get truly wild and uncontrolled hair.

Increasing Frizz ( 0%, 25%, 50%, 75% )

Curl and Kink

Curling is slightly complicated but very configurable. Some fur and hair has many tight, random curls, like an Afro hairstyle. But other hair has very organized curls, like the soft bend of eyelashes or the carefully curled bangs of a woman. You can make both types (and more) with Sasquatch's curling controls.

Curl sets the overall strength of curling, with 0% making straight fibers and 100% making tight circular loops. You can use negative values like -100% to make the fibers bend in the opposite direction. This is often useful with Curl Combing described below.

Increasing Curl Strength ( 0%, 20%, 40%, 60% )

The curling strength can be randomized with the Curl Vary control. This is especially useful for hairstyles where some curls are much stronger than others.

Tip Curl controls how much of the curl occurs at the end of the fiber. A value of 0% will make the entire fiber follow a simple circular shape. Higher values look more natural, with the fiber staying straight and only starting to loop tightly near the end of the fiber.

Increasing Tip Curl ( 0%, 20%, 40%, 100% )

Some hair curling is random, with the curls going in all directions. But other types of hair have a carefully consistent direction to the curling, like eyelashes which all curl in the same direction, bending up and down, not sideways. Some hairstyles have slightly curly bangs, with the hairs bending down and curling towards the forehead.

You control this alignment with the Curl Combing setting. When the value is 0%, the curl direction is completely random, a lot like an "Afro" hairstyle. A value of 100% will make the curls align with the combing direction of the hair, so you can make aligned curls like the bangs example. In this case you can use positive or negative curl strengths to make the fiber loop towards or away from the surface. Finally, you can use negative Curl Combing values. This makes the curls align sideways. This is sometimes seen when hair is wet and sticking to your head.

Curl is also useful in some situations when you want to make fibers "flow" around a corner. You can paint an S panel image map and use it to make a strong curl around sharp bends to "roll" the fur around that corner.

Kink "waves" fibers, making them shaped like the letter S. This effect is often seen in long hair which has been carefully groomed with a curling iron. The appearance is a lot like ocean waves! You can control how strong the kinking is with the Kink control, and how many wiggles they make with Freq. This option is especially useful for long hair.

Increasing Kink ( 0%, 30%, 60%, 90% )

Increasing Kink Freq ( 25%, 50%, 75%, 100% )

Fiber Divisions

Sasquatch fibers curve smoothly, but for rendering speed, it draws them as a series of very short connected lines. These lines are usually so small that you never see them; you just see the curve.

However, Sasquatch can render the fibers much more quickly by drawing fewer lines for each fiber. This doesn't change the look of many types of fibers, so the speed increase is easy and useful. Other fibers need a lot of lines to draw smoothly.

You can control this quality of the fibers with the Fiber Divisions control. Higher values of Fiber Divisions will make higher quality fibers, especially when the fibers bend a lot, but may slow down rendering.

Fiber Divisions is especially important when making long hair. Some styles need more divisions, and some need almost none. Experiment with the control to see what effect it has on your rendering speed and quality. In some cases, you can make a scene render 5 to 10 times faster by using low settings!

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