accumulateXYProductsInCentroidalFrame Method
- Assemble XX, YY, XY products into a full matrix form [xx,xy,0,0; xy,yy,0,0;0,0,0,0;0,0,0,1].
- Sandwich this between transforms with columns [vectorU, vectorV, 0000, origin]. (Column weights 0001) (only xy parts of vectors)
- scale by detJ for the xy-only determinant of the vectors.
accumulateXYProductsInCentroidalFrame(productXX: number, productXY: number, productYY: number, area: number, origin: Readonly<WritableXAndY>, vectorU: Readonly<WritableXAndY>, vectorV: Readonly<WritableXAndY>): void
| Parameter | Type | Description |
|---|---|---|
| productXX | number | |
| productXY | number | |
| productYY | number | |
| area | number | Area in caller's system |
| origin | Readonly<WritableXAndY> | Caller's origin |
| vectorU | Readonly<WritableXAndY> | Caller's U axis (not necessarily unit) |
| vectorV | Readonly<WritableXAndY> | Caller's V axis (not necessarily unit) |
Returns - void
Defined in
- geometry4d/MomentData.ts Line 389
Last Updated: 20 June, 2023