Strand Groups
A strand group is an integer value assigned to each guide or hair strand. Strands belonging to a specific group can be edited separately by various Ornatrix operators. Various Ornatrix operators provide an option to specify the group index which it will apply to. You can use multiple operators stacked on top of each other to separately style hairs belonging to different groups.
For example, you can have half of your character's hairs belong to group 1 and another half to group 2. Two Change Width operators can then be added, one which works on group 1 and another on group 2. One operator can change the first half of the hairs width to be thinner while the second operator can change the second half of the hair to be thicker.
Specifying Strand Groups
The most typical way to specify strand groups is to do it on guides, but strand groups can also be created directly on hair strands if Edit Guides is added on top of Hair From Guides. To do this:- In Edit Guides enter Edit Guides mode and select one or more guides, you can also use the Selection brush in Brush mode.
- Scroll down to the Strand Groups section and check the "Use Strand Groups" box
- Use the Strand Group Index slider to choose a group where the selected guides will be included and click Assign
- Alternatively you can click Assign Unique and a unique strand group index will be assigned to the selected guides
If you are using Hair From Mesh Strips operator, you can use the per-strip controls to directly specify group index for individual strips.
Using strand groups
When using various hair operators in Ornatrix you can specify a Strand Group parameter to them.
The value of this parameter will determine which hair or guide strands the operator will be applied to. A value of 0 will apply the operator to all strands which do not have a group assigned. In other words, 0 is the default strand group index.
The strand group textbox also shows the strand group of the selected strands in Edit Guides operator.
Strand Group Patterns
Strand Group Patterns allow you to create different combinations of strand groups.
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Using Strand Groups Patterns |
The following is a list of combinations that can be used for strand group management.
- Single groups:
Enter a single value to affect a single strand group.
- Multiple groups:
Enter two or more values separated by a comma to add multiple groups. I.e. 1, 3, 5 will add groups 1, 3 and 5.
- Range of groups:
Use a colon to specify a range of groups. I.e. 1:5. This combination will add the groups from 1 to 5.
- All groups except one:
Exclude a single group. I.e., use ^4 to exclude group number 4.
- Range of groups with a single stride:
Add a range of groups with a stride by using a colon to separate each group. I.e. 1:10:2.
- All groups higher than:
Use a plus (+) symbol to add all groups higher than the entered value. I.e. +2 will add all groups starting from group number 2.
- Excluding a range of groups:
Is possible to exclude a range of groups. I.e. ^4:6 will exclude from group number 4 to number 6.
- Single group and a range:
Include a single group and a range by entering a single value followed by a range separated by a comma. I.e. 1,3:5 will include group number 1 and jump to a range from group number 3 to number 5.