# `GlyphsCallback interpolateLayer:glyph:interpolation:scale:error:`

*Instance Method*

## Declaration

```swift
func interpolateLayer(_ layer: GSLayer, glyph: GSGlyph, interpolation: [AnyHashable : Any], scale: CGFloat) throws
```

```objc
- (BOOL) interpolateLayer:(GSLayer *) layer glyph:(GSGlyph *) glyph interpolation:(NSDictionary *) interpolation scale:(CGFloat) scale error:(NSError **) error;
```

```python
interpolateLayer_glyph_interpolation_scale_error_(layer: GSLayer, glyph: GSGlyph, interpolation: dict, scale: float) -> tuple[bool, NSError]
```