Point2dArrayCarrier Class
Helper object to access members of a Point2d[] in geometric calculations.
- The collection holds only a reference to the actual array.
- The actual array may be replaced by the user as needed.
- When replaced, there is no cached data to be updated.
Extends
Methods
| Name | Description | |
|---|---|---|
| constructor(data: Point2d[]): Point2dArrayCarrier | CAPTURE caller supplied array ... | |
| crossProductIndexIndexIndex(originIndex: number, indexA: number, indexB: number): number | undefined | Return the cross product of vectors from point at originIndex to points at indexA and indexB | |
| crossProductXAndYIndexIndex(origin: XAndY, indexA: number, indexB: number): number | undefined | Return the cross product of vectors from origin to points at indexA and indexB | |
| getPoint2dAtCheckedPointIndex(index: number, result?: Point2d): Point2d | undefined | Access by index, returning strongly typed Point2d | |
| getVector2dAtCheckedVectorIndex(index: number, result?: Vector2d): Vector2d | undefined | Access by index, returning strongly typed Vector2d | |
| isValidIndex(index: number): boolean | test if index is valid | |
| vectorIndexIndex(indexA: number, indexB: number, result?: Vector2d): Vector2d | undefined | Return a vector from the point at indexA to the point at indexB | |
| vectorXAndYIndex(origin: XAndY, indexB: number, result?: Vector2d): Vector2d | undefined | Return a vector from given origin to point at indexB |
Properties
| Name | Type | Description | |
|---|---|---|---|
| data | Point2d[] | reference to array being queried. | |
| length Accessor ReadOnly | number | read-only property for number of XYZ in the collection. |
Defined in
Last Updated: 08 January, 2020