Changing attributes of fur in Maya

Changing attributes of fur in Maya

After creating a fur description, you can edit its attributes. There are three possibilities for this:

Changing the attributes of the fur description. The changes will be applied to all surfaces to which the edited description is attached. Selective drawing ("combing") of the specified attributes without changing global settings. Map overlay on fur attributes.

Editing fur descriptions: When editing a description, all changes made are applied to all surfaces to which this description is attached.

Warning: If you edit fur descriptions after applying a map or drawing, the new attribute values ​​do not overlap the values ​​obtained with the map. The card values ​​are applied to the already edited description.

Editing the description of fur:

1. In the Rendering menu set, from the Fur menu, select Edit Fur Description and then Fur Description Name to open the Attribute Editor window. Here Fur Description Name is the name of the fur description whose attributes you want to change.

2. Adjust the desired attributes of the fur.

Random changes in the values ​​of the attribute of fur

To make the fur look more natural, you can randomly vary the attributes of the fur, setting the amplitude and frequency of random changes. The amplitude determines in what range this attribute will change, and the frequency - how many changes will occur. The amplitude and frequency of random changes can be set for all attributes of the fur.

For example, if you add random noise to the Length attribute, each wool will have a random length. If the interference frequency is low, the length of the fur will vary smoothly, and if the frequency is high, then more sharply.

In another case, random noise is superimposed on the attributes Base Color (Color at the root) and Tip Color (Color at the tip). At a low frequency of interference, the spots turn out to be larger.

Adjusting the Amplitude and Frequency of Interference

1. In the Rendering menu set, from the Fur menu, select Edit Fur Description and then Fur Description Name, where Fur Description Name is the name of the fur description that you want to edit. The Attribute Editor window appears.

2. Go to the Details section, and then to the attribute section to which you want to add random noise.

3. Adjust the Noise Amplitude and Noise Frequency values.

 Changing the range of an attribute with a superimposed map

A map superimposed on an attribute is a two-dimensional image located on the surface in accordance with UV coordinates. The value of the attribute at the point of the surface is determined by the color of the map at the same point, with black color equal to zero and white color to one.

Attribute cards are specified in the Details section of the Attribute Editor window to describe. By default, the value of the attribute for which the map is used varies from 0 to 1. You can set any range that suits you. In more detail map overlay and range adjustment will be considered below.

The value range can be changed for all attributes except for color attributes.

Changing the Attribute Range

1. In the Rendering menu, from the Fur menu, select Edit Fur Description and then Fur Description Name, where Fur Description Name is the name of the fur description whose attribute you want to set. The Attribute Editor window appears.

2. Go to the Details section and then to the attribute section for which you want to set the range of the change.

3. Set the Map Offset and Map Multiplier values. These parameters are described in more detail in the chapter of this manual devoted to the parameters of the Fur Description node.

Defines the value that will be added to the parameter range when determining the final value. For example, if you want to change the range from 0-1 to 4-5, set the value to 4.

Specifies the value by which the range of the parameter range is multiplied when determining the final value. For example, if you want to change the range from 0-1 to 0-10, set the value to 10.

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