quickLength Method
Return an approximate (but easy to compute) arc length. The estimate is:
- Form 8 chords on full circle, proportionally fewer for partials. (But 2 extras if less than half circle.)
- sum the chord lengths
- For a circle, we know this crude approximation has to be increased by a factor (theta/(2 sin (theta/2)))
- Apply that factor.
- Experiments confirm that this is within 3 percent for a variety of eccentricities and arc sweeps.
quickLength(): number
Returns - number
Defined in
- curve/Arc3d.ts Line 463
Last Updated: 20 June, 2023