findOrAddNormalInGrowableXYZArray Method
Add a normal to the polyface. The implementation is free to either create a new normal or return the index of a prior normal with the same coordinates.
findOrAddNormalInGrowableXYZArray(xyz: GrowableXYZArray, index: number, transform?: Transform, priorIndex?: number): undefined | number
@returns the normal index in the polyface.
| Parameter | Type | Description |
|---|---|---|
| xyz | GrowableXYZArray | the array of normals. |
| index | number | index of the normal in the array. |
| transform | Transform | (optional) transform to be applied. |
| priorIndex | number | (optional) index of a prior point to check for possible duplicate value. |
Returns - undefined | number
the normal index in the polyface.
Defined in
- polyface/PolyfaceBuilder.ts Line 430
Last Updated: 24 June, 2025
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