Метод quadraticCurveTo

void quadraticCurveTo(num cpx, num cpy, num x, num y) native;

© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-html/CanvasRenderingContext2D/quadraticCurveTo.html