One pie or doughnut slice, in CSS pixels relative to the canvas top-left.
Angles are radians as Chart.js stores them on an ArcElement: measured from
3 o'clock and increasing clockwise, with the chart's rotation already
folded in. Both <canvas> and SVG put +y downwards, so the same angle maps
to the same point in either — no conversion is needed here.
One pie or doughnut slice, in CSS pixels relative to the canvas top-left.
Angles are radians as Chart.js stores them on an
ArcElement: measured from 3 o'clock and increasing clockwise, with the chart'srotationalready folded in. Both<canvas>and SVG put +y downwards, so the same angle maps to the same point in either — no conversion is needed here.