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 393
Last Updated: 27 June, 2025
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