Method: UIView#tumble_in

Defined in:
lib/sugarcube-animations/uiview.rb

#tumble_in(options = {}, more_options = {}, &after) ⇒ Object

Moves the view on screen while slowly rotating it.

Based on https://github.com/warrenm/AHAlertView/blob/master/AHAlertView/AHAlertView.m



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# File 'lib/sugarcube-animations/uiview.rb', line 499

def tumble_in(options={}, more_options={}, &after)
  if options.is_a? Numeric
    default_duration = options
    options = more_options
    side = options[:side] || :left
  elsif options.is_a? Symbol
    side = options
    options = more_options
    default_duration = 0.3
  else
    default_duration = 0.3
    side = options[:side] || :left
  end

  case side
    when :left
      angle = -Math::PI/4
    when :right
      angle = Math::PI/4
    else
      raise "Unknown direction #{side.inspect}"
  end

  reset_transform = self.transform
  reset_center = self.center

  options[:duration] ||= default_duration
  unless options.key?(:options) || options.key?(:curve)
    options[:options] = UIView.sugarcube_animation_options(curve: UIViewAnimationOptionCurveEaseOut)
  end
  options[:after] = after

  window = UIApplication.sharedApplication.windows[0]
  top = self.convertPoint([0, 0], toView:nil).y
  height = window.frame.size.height - top
  offset = CGPoint.new(0, height * -1.5)
  offset = CGPointApplyAffineTransform(offset, self.transform)
  self.transform = CGAffineTransformConcat(self.transform, CGAffineTransformMakeRotation(angle))
  self.center = CGPointMake(self.center.x + offset.x, self.center.y + offset.y)

  self.animate(options) do
    self.transform = reset_transform
    self.center = reset_center
  end
end