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: XAndY, vectorU: XAndY, vectorV: XAndY): void
| Parameter | Type | Description |
|---|---|---|
| productXX | number | |
| productXY | number | |
| productYY | number | |
| area | number | Area in caller's system |
| origin | XAndY | Caller's origin |
| vectorU | XAndY | Caller's U axis (not necessarily unit) |
| vectorV | XAndY | Caller's V axis (not necessarily unit) |
Defined in
Last Updated: 08 January, 2020