fromCenter static method
Implementation
static math.Rectangle<double> fromCenter(
  math.Point<double> center,
  math.Point<double> size,
) => math.Rectangle<double>.fromPoints(
  math.Point<double>(center.x - size.x / 2, center.y - size.y / 2),
  math.Point<double>(center.x + size.x / 2, center.y + size.y / 2),
);