Victor Choueiri 33aaf6fc2f Enable sweep gradients (#4950)
* Enable sweep gradients

* Use _matrix4IsValid

* Add assert for startAngle < endAngle

* Use radians for startAngle and endAngle

* Update AUTHORS

* Better assert on matrix4IsValid
2018-04-30 15:58:53 -07:00
..
2018-04-30 15:58:53 -07:00