isTriangleVisible method

@override bool isTriangleVisible(Triangle t)

Checks if triangle is visible in the current viewport.

Implementation

@override
bool isTriangleVisible(Triangle t) {
  return isLineVisible(t.point0, t.point1) ||
      isLineVisible(t.point1, t.point2) ||
      isLineVisible(t.point2, t.point0);
}