Class: Lorraine::Image

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(w, h) ⇒ Image

Returns a new instance of Image.



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# File 'lib/lorraine/image.rb', line 26

def initialize(w, h)
  self.width = w
  self.height = h
end

Instance Attribute Details

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/lorraine/image.rb', line 10

def height
  @height
end

#pixels ⇒ Object

Returns the value of attribute pixels.



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# File 'lib/lorraine/image.rb', line 8

def pixels
  @pixels
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/lorraine/image.rb', line 9

def width
  @width
end

Class Method Details

.frames_between(a, b, steps = 10) ⇒ Object 



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# File 'lib/lorraine/image.rb', line 12

def self.frames_between(a, b, steps = 10)
  raise "Different sized images for frames_between" if a.count != b.count
  pixel_frames = []
  a.pixels.each_with_index do |a_px, i|
    b_px = b.pixels[i]
    pixel_frames << a_px.gradient_to(b_px, steps)
  end
  pixel_frames.transpose.map do |frame|
    img = Lorraine::Image.new(a.width, a.height)
    img.pixels = frame
    img
  end
end

Instance Method Details

#clear!(rgb, percent = true) ⇒ Object 



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# File 'lib/lorraine/image.rb', line 40

def clear!(rgb, percent = true)
  px = []
  count.times{ px <<  Colorist::Color.from_rgb(rgb[0], rgb[1], rgb[2], percent: percent) }
  self.pixels = px
end

#count ⇒ Object 



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# File 'lib/lorraine/image.rb', line 31

def count
  self.width * self.height
end

#rgb_pixels(upper_limit = 1) ⇒ Object 



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# File 'lib/lorraine/image.rb', line 50

def rgb_pixels(upper_limit = 1)
  self.pixels.map {|px| [px.r.to_f / 255.0 * upper_limit, px.g.to_f / 255.0  * upper_limit, px.b.to_f / 255.0  * upper_limit] }
end

#rgb_pixels=(rgb, percent = true) ⇒ Object

0.0 - 1.0



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# File 'lib/lorraine/image.rb', line 36

def rgb_pixels=(rgb, percent = true)
  self.pixels = rgb.map{ |px| Colorist::Color.from_rgb(px[0], px[1], px[2], percent: percent) }
end

#rotate! ⇒ Object 



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# File 'lib/lorraine/image.rb', line 46

def rotate!
  @pixels.rotate!
end