eval-de-casteljau-with-err
function evalDeCasteljauWithErr(ps: number[][], t: number): object
Defined in local-properties-at-t/evaluate/double/eval-de-casteljau-with-err.ts:28
Returns the resulting point of evaluating the given bezier curve at the given
parameter t including a coordinate-wise error bound.
- uses De Casteljau's algorithm in double precision floating point arithmetic
The resulting point is returned as { p: number[], pE: number[] },
where p is the point [x,y] and pE is the corresponding coordinate-wise
absolute error bound of the calculation.
Note!
Green circles are draggable!
Example
evalDeCasteljauWithErr([[1, 1], [7, 7], [4, 2], [8, 1.5]], 0.4)//=> { p: [4.904, 3.912], pE: [2.2390089782220466e-14, 2.0631496511214218e-14] }Parameters:
| Name | Type | Description |
|---|---|---|
ps | number[][] | an order 1,2 or 3 bezier curve, e.g. [[0,0],[1,1],[2,1],[2,0]] |
t | number | the parameter value where the bezier should be evaluated |
Returns: object
| Name | Type |
|---|---|
p | number[] |
pE | number[] |