---
title: "init(baseGeometry:bones:boneInverseBindTransforms:boneWeights:boneIndices:)"
framework: scenekit
role: symbol
role_heading: Initializer
path: "scenekit/scnskinner/init(basegeometry:bones:boneinversebindtransforms:boneweights:boneindices:)"
---

# init(baseGeometry:bones:boneInverseBindTransforms:boneWeights:boneIndices:)

Creates a skinner object with the specified visible geometry and skeleton information.

## Declaration

```swift
convenience init(baseGeometry: SCNGeometry?, bones: [SCNNode], boneInverseBindTransforms: [NSValue]?, boneWeights: SCNGeometrySource, boneIndices: SCNGeometrySource)
```

## Parameters

- `baseGeometry`: The geometry whose surface the skinner’s animation skeleton deforms.
- `bones`: An array of doc://com.apple.scenekit/documentation/SceneKit/SCNNode objects, each representing a bone or control point for the animation skeleton.
- `boneInverseBindTransforms`: An array of doc://com.apple.documentation/documentation/Foundation/NSValue objects containing doc://com.apple.scenekit/documentation/SceneKit/SCNMatrix4-swift.struct transforms, each of which corresponds to a node in the doc://com.apple.scenekit/documentation/SceneKit/SCNSkinner/bones array. Each value is the inverse of the bone node’s transform from bind space (that is, of the concatenation of all transforms from the skeleton root down to that bone) in the skeleton’s default pose.
- `boneWeights`: The geometry source defining the influence of each bone on the positions of vertices in the geometry. For details, see the doc://com.apple.scenekit/documentation/SceneKit/SCNSkinner/boneWeights property.
- `boneIndices`: The geometry source defining the mapping from bone indices in skeleton data to the skinner’s bones array. For details, see the doc://com.apple.scenekit/documentation/SceneKit/SCNSkinner/boneIndices property.

## Return Value

Return Value A new skinner object.

## Discussion

Discussion To use the skinner object in a scene, assign it to the skinner property of a node. That node’s geometry property should reference the same SCNGeometry object as the skinner’s baseGeometry property.