Curve and Curves are two different object types in Blender.
Make sure that you are using Blender 4.1 or a newer version DO NOT open or save your Woolly scene in an older version
Check the Update Log to make sure that you are using the latest version of Woolly. (if you are facing an issue, it might already be solved in the most recent update)
The addon will automatically try to find if the selected base object is using a solid color or an image texture for its base color. If found, the color/ image texture will be assigned to the Hair System’s shader. This will only work for one object at a time.
When using Woolly Hair Systems..
Keep the polygon count on your base models as low as possible. Disable Subdivision modifiers while working. Enable them only for rendering.
If your base model is very high-poly, you should use a low-poly proxy (duplicate) of it for generating hair. This will make all computations and renders much faster.
Apply modifiers on your object that are adding/ removing geometry. (Solidify, Decimate, etc.) No need to apply Subdivision modifier, Auto Smooth, etc.
Make sure your object is UV unwrapped properly. No UV islands should be overlapping or going out of the UV space.
Confirm the name of the UV map that you wish to use from the base object. Copy that name and paste it in Woolly Felt Modifier’s UV Map field.
Use these settings under Cycles Render Properties: (These settings only affect Curves objects, not Curve objects. Yes, they are different.)
*** Shape: Rounded Ribbons** = Best performance (Faster Renders)
*** Shape: 3D Curves** = Best quality (Slower Renders)
*** Additional Subdivision: 0** = Best viewport performance
*** Additional Subdivision: 3** = Best viewport quality
When a Hair System is added, a Woolly Calculator modifier gets added to the base mesh object.
'Woolly Calculator' should always be below (after) modifiers that create new geometry, Mirror or Solidify modifier for example.
'Woolly Calculator' should always be above (before) an Armature modifier or any other modifier that makes the mesh vertices move their positions.
If a Subdivision modifier significantly changes the shape/ silhouette of your object, it is better to move 'Woolly Calculator' below the Subdivision modifier. Otherwise, move it above for faster performance.
Enable ‘Animated Seed’ when rendering an animation involving hair. This ensures a different noise pattern on every frame, so there is no “static” noise overlaid on your animation. Now you can even use a lower sample count.
Curves and Curve are two different object types in Blender.
The icons in the Outliner window can identify the object type:
