毛发曲线附着到表面

The Attach Hair Curves to Surface node binds hair curves to a surface mesh, establishing their attachment positions and optionally aligning them to the surface orientation. This node is a fundamental part of hair generation and grooming workflows, ensuring that curves remain anchored correctly to the underlying surface, even after deformation or topology changes.

Note

This node or modifier requires valid Surface geometry or object inputs, as well as a Surface UV Map, to function properly.

输入

几何数据

The input geometry containing the hair curves to be attached to the surface.

表面输入类型

Defines how the surface geometry is provided for attachment. The geometry input takes priority if both are connected.

物体:

Use an object reference as the target surface.

几何数据:

Use a geometry input directly connected to the surface mesh.

曲面

The surface object or geometry used as the attachment target. Its transforms must match the modifier object for proper alignment.

表面UV映射

The UV map used to determine the attachment points on the surface mesh. These coordinates are stored per curve to maintain attachment consistency.

表面静置位置

When enabled, sets the surface mesh into its rest position before attachment. This ensures consistency when later deforming curves along the same surface.

Tip

When using this node with Deform Curves on Surface, enable Surface Rest Position if that operation comes after this one, so the attachment coordinates are recorded in the pre-deformed state.

附着UV采样

Samples the Surface UV Map at the attachment point and stores the UV coordinates for each curve. This allows later nodes to access or reuse the attachment data.

吸附至表面

Projects the root of each curve onto the closest point of the surface mesh, ensuring that all roots lie directly on the surface.

对齐到表面法线

Rotates each curve so that its root direction aligns with the surface normal. This typically requires guide data or consistent curve orientation to produce stable results.

沿曲线混合

Blends the deformation or alignment effect gradually along each curve, from root to tip, instead of applying it uniformly.

输出

几何数据

The resulting geometry with updated curve attachments.

表面UV坐标

The UV coordinate on the surface mesh corresponding to each curve's attachment point.

表面法线

The normal vector of the surface mesh evaluated at each curve's attachment point.