createStartMiddleEnd MethodStatic
Create an elliptical arc from three points on the ellipse: two points on an axis and one in between.
createStartMiddleEnd(point0: Readonly<WritableXYAndZ>, point1: Readonly<WritableXYAndZ>, point2: Readonly<WritableXYAndZ>, sweep?: AngleSweep, result?: Arc3d): undefined | Arc3d
@returns elliptical arc, or undefined if construction impossible.
| Parameter | Type | Description |
|---|---|---|
| point0 | Readonly<WritableXYAndZ> | start of arc, on an axis |
| point1 | Readonly<WritableXYAndZ> | point on arc somewhere between point0 and point2 |
| point2 | Readonly<WritableXYAndZ> | point on arc directly opposite point0 |
| sweep | AngleSweep | angular sweep, measured from point0 in the direction of point1.For a half-ellipse from point0 to point2 passing through point1, pass AngleSweep.createStartEndDegrees(0,180).Default value is full sweep to create the entire ellipse. |
| result | Arc3d | optional preallocated result |
Returns - undefined | Arc3d
elliptical arc, or undefined if construction impossible.
Defined in
- curve/Arc3d.ts Line 396
Last Updated: 28 October, 2024
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