Class: DealWithify::DealWithIt

Inherits:
Object
  • Object
show all
Defined in:
lib/dealwithify.rb

Instance Method Summary collapse

Constructor Details

#initialize(left_eye, right_eye, angle, img, rotate, flip) ⇒ DealWithIt

Returns a new instance of DealWithIt.



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# File 'lib/dealwithify.rb', line 5

def initialize(left_eye, right_eye, angle, img, rotate, flip)
  @img           = img
  @img.format    = 'gif'
  @rotate        = rotate
  @flip          = flip
  @img_width     = @img.columns
  @img_height    = @img.rows
  @saved_glasses = nil
  
  left_eye_x = left_eye['x'] * @img_width / 100.0
  left_eye_y = left_eye['y'] * @img_height / 100.0
  right_eye_x = right_eye['x'] * @img_width / 100.0
  right_eye_y = right_eye['y'] * @img_height / 100.0
  
  @eye_distance  = Math.sqrt((left_eye_x - right_eye_x)**2 + (left_eye_y - right_eye_y)**2)
  eye_midpoint_x = left_eye_x + (right_eye_x - left_eye_x)/2.0
  eye_midpoint_y = left_eye_y + (right_eye_y - left_eye_y)/2.0
  @eye_midpoint  = [eye_midpoint_x, eye_midpoint_y]
  @angle         = angle
end

Instance Method Details

#centered_glasses ⇒ Object 



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# File 'lib/dealwithify.rb', line 65

def centered_glasses
  align_images(self.scaled_and_rotated_glasses, @img, self.scaled_and_rotated_glasses_midpoint, @eye_midpoint)
end

#glasses_midpoint ⇒ Object 



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# File 'lib/dealwithify.rb', line 45

def glasses_midpoint
  gwidth, gheight = self.shrunk_glasses_dimensions
  scale = gwidth / GLASSES.columns.to_f
  if @flip
    [FLIP_GLASSES_MID_X * scale, FLIP_GLASSES_MID_Y * scale]
  else
    [ORIG_GLASSES_MID_X * scale, ORIG_GLASSES_MID_Y * scale]
  end
end

#scaled_and_rotated_glasses ⇒ Object 



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# File 'lib/dealwithify.rb', line 33

def scaled_and_rotated_glasses
  return @saved_glasses if @saved_glasses
  new_glasses = GLASSES.resize(*self.shrunk_glasses_dimensions, Magick::TriangleFilter, 0.5)
  new_glasses.background_color = 'none'
  new_glasses.format = 'png'
  
  new_glasses.flop! if @flip
  new_glasses.rotate!(@angle) if @rotate
  
  @saved_glasses = new_glasses
end

#scaled_and_rotated_glasses_midpoint ⇒ Object 



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# File 'lib/dealwithify.rb', line 55

def scaled_and_rotated_glasses_midpoint
  midx, midy = self.glasses_midpoint
  if @rotate
    # midx += 50 * Math.cos(@angle * Math::PI/180)
    # This pushes the glasses up the nose a bit.
    midy += (50 * Math.sin(@angle * Math::PI/180)).abs
  end
  [midx, midy]
end

#shifted_glasses(y_shift) ⇒ Object 



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# File 'lib/dealwithify.rb', line 69

def shifted_glasses(y_shift)
  glasses_mid_x, glasses_mid_y = self.scaled_and_rotated_glasses_midpoint
  glasses_mid_y -= y_shift
  align_images(self.scaled_and_rotated_glasses, @img, [glasses_mid_x, glasses_mid_y], @eye_midpoint)
end

#shrunk_glasses_dimensions ⇒ Object 



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# File 'lib/dealwithify.rb', line 26

def shrunk_glasses_dimensions
  new_width = @eye_distance * GLASSES_WIDTH_MULTIPLIER
  scale = new_width / GLASSES.columns.to_f
  new_height = scale * GLASSES.rows.to_f
  [new_width, new_height]
end