Class: Element

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

Overview

gl_tail.rb - OpenGL visualization of your server traffic Copyright 2007 Erlend Simonsen <[email protected]>

Licensed under the GNU General Public License v2 (see LICENSE)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(block, name, color, start_position = nil) ⇒ Element

Returns a new instance of Element.



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# File 'lib/gl_tail/element.rb', line 11

def initialize(block, name, color, start_position = nil)
  @block = block

  if name.nil?
    name = ''
  end

  if name =~ /^\d+.\d+.\d+.\d+$/
    @name = Resolver.resolv(name, self)
  else
    @name = name
  end

  @start_position = start_position.nil? ? -@block.top : start_position

  @queue = []
  @pending = []
  @activities = []
  @messages = 0
  @rate = 0
  @total = 0
  @sum = 0
  @average = 0.0
  @last_time = 0
  @step = 0, @updates = 0
  @active = false
  @color = color || [1.0, 1.0, 1.0, 1.0]
  @type = (@block.activity_type == "blobs" ? :blobs : :bars)
  @bar_color ||= @color.dup

end

Instance Attribute Details

#active ⇒ Object

Returns the value of attribute active.



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# File 'lib/gl_tail/element.rb', line 8

def active
  @active
end

#activities ⇒ Object (readonly)

Returns the value of attribute activities.



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# File 'lib/gl_tail/element.rb', line 9

def activities
  @activities
end

#average ⇒ Object (readonly)

Returns the value of attribute average.



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# File 'lib/gl_tail/element.rb', line 9

def average
  @average
end

#average_size ⇒ Object

Returns the value of attribute average_size.



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# File 'lib/gl_tail/element.rb', line 8

def average_size
  @average_size
end

#color ⇒ Object

Returns the value of attribute color.



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# File 'lib/gl_tail/element.rb', line 8

def color
  @color
end

#messages ⇒ Object (readonly)

Returns the value of attribute messages.



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# File 'lib/gl_tail/element.rb', line 9

def messages
  @messages
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/gl_tail/element.rb', line 8

def name
  @name
end

#queue ⇒ Object (readonly)

Returns the value of attribute queue.



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# File 'lib/gl_tail/element.rb', line 9

def queue
  @queue
end

#rate ⇒ Object (readonly)

Returns the value of attribute rate.



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# File 'lib/gl_tail/element.rb', line 9

def rate
  @rate
end

#right ⇒ Object

Returns the value of attribute right.



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# File 'lib/gl_tail/element.rb', line 8

def right
  @right
end

#total ⇒ Object (readonly)

Returns the value of attribute total.



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# File 'lib/gl_tail/element.rb', line 9

def total
  @total
end

#updates ⇒ Object (readonly)

Returns the value of attribute updates.



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# File 'lib/gl_tail/element.rb', line 9

def updates
  @updates
end

#wy ⇒ Object

Returns the value of attribute wy.



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# File 'lib/gl_tail/element.rb', line 8

def wy
  @wy
end

#y ⇒ Object

Returns the value of attribute y.



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# File 'lib/gl_tail/element.rb', line 8

def y
  @y
end

Instance Method Details

#<(b) ⇒ Object 



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# File 'lib/gl_tail/element.rb', line 305

def < (b)
  b.rate < self.rate
end

#<=(b) ⇒ Object 



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# File 'lib/gl_tail/element.rb', line 309

def <= (b)
  b.rate <= self.rate
end

#<=>(b) ⇒ Object 



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# File 'lib/gl_tail/element.rb', line 297

def <=>(b)
  b.rate <=> self.rate
end

#>(b) ⇒ Object 



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# File 'lib/gl_tail/element.rb', line 301

def > (b)
  b.rate > self.rate
end

#>=(b) ⇒ Object 



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# File 'lib/gl_tail/element.rb', line 313

def >= (b)
  b.rate >= self.rate
end

#add_activity(message, color, size, type, real_size) ⇒ Object 



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# File 'lib/gl_tail/element.rb', line 43

def add_activity(message, color, size,  type, real_size)
  @bar_color[0] = @bar_color[0] + (@color[0] - @bar_color[0]) / 5
  @bar_color[1] = @bar_color[1] + (@color[1] - @bar_color[1]) / 5
  @bar_color[2] = @bar_color[2] + (@color[2] - @bar_color[2]) / 5

  @pending.push Item.new(message, size, color, type) if(type != 3)
  @messages += 1
  @total += 1
  @sum += real_size
  @color = color

  if @rate == 0
    @rate = 1.0 / 60
    @messages = 0
  end
end

#add_event(message, color, update_stats) ⇒ Object 



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# File 'lib/gl_tail/element.rb', line 60

def add_event(message, color, update_stats)
  @pending.push Item.new(message, 0.01, color, 2)
  if update_stats
    @messages += 1
    @total += 1
    if @rate == 0
      @rate = 1.0 / 60
      @messages = 0
    end
  end
end

#render(engine, options = { }) ⇒ Object 



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# File 'lib/gl_tail/element.rb', line 125

def render(engine, options = { })

  # this used to be in the constructor, couldnt leave it there without using globals
  if not defined? @x
    @x = (@block.is_right ? @block.alignment : (@block.alignment - (8.0 / (@block.config.screen.window_width / 2.0)) * (@block.width + 8)))
    @y = @start_position
    @z = 0
    @wy = @start_position

    @color = @block.color.dup if @color.nil? && @block.color
    @color ||= [1.0, 1.0, 1.0, 1.0]
    @size = 0.01
  end

  @wx = @block.is_right ? (@block.alignment - (@block.width+8)*8.0 / (engine.screen.window_width / 2.0)) : @block.alignment

  if(@y == -@block.top)
    @y = @wy
  end

  d = @wy - @y
  if d.abs < 0.001
    @y = @wy
  else
    @y += d / 20
  end

  d = @wx - @x
  if d.abs < 0.001
    @x = @wx
  else
    @x += d / 20
  end

  glPushMatrix()
  glTranslate(@x, @y, @z)


  if( rate > 0.0 )
    glBegin(GL_QUADS)

    if @x >= 0
      y2 = 0.0
      @x1 = 7*8.0 / (engine.screen.window_width / 2.0)
      y1 = engine.screen.line_size * 0.9
      x2 = @x1 + ((@block.width+1) * 8.0 / (engine.screen.window_width / 2.0) ) * (rate / @block.max_rate)

      @x2 ||= @x1
      d = (@x2 - x2)
      if d.abs < 0.001
        @x2 = x2
      else
        @x2 -= d / 40
      end
      glColor(@bar_color)
      glVertex3f(@x1, y1, @z)
      glColor(@bar_color)
      glVertex3f(@x2, y1, @z)
      glColor([0.0, 0.0, 0.0, 0.0])
      glVertex3f(@x2, y2, @z)
      glColor(@bar_color)
      glVertex3f(@x1, y2, @z)

    else
      @x2 = (@block.width+1)*8.0 / (engine.screen.window_width / 2.0)
      y2  = 0.0
      y1  = engine.screen.line_size * 0.9
      x1 = ((@block.width * 8.0) / (engine.screen.window_width / 2.0) ) * (1.0 - rate / @block.max_rate)

      @x1 ||= @x2
      d = (@x1 - x1)
      if d.abs < 0.001
        @x1 = x1
      else
        @x1 -= d / 20
      end

      glColor(@bar_color)
      glVertex3f(@x1, y1, @z)
      glColor(@bar_color)
      glVertex3f(@x2, y1, @z)
      glColor(@bar_color)
      glVertex3f(@x2, y2, @z)
      glColor([0.0, 0.0, 0.0, 0.0])
      glVertex3f(@x1, y2, @z)

    end


    glEnd

  end


#    glTranslate(@x, @y, @z)

  glColor( (@queue.size > 0 ? (engine.screen.highlight_color || [1.0, 0.0, 0.0, 1.0]) : @color ) )

  case @block.show
  when 0
    if @rate < 0.0001
      txt = "    r/m "
    else
      txt = "#{sprintf("%8.2f",@rate * 60)} "
    end
  when 1
    if @total == 0
      txt = "  total "
    else
      txt = "#{sprintf("%8d",@total)} "
    end
  when 2
    if @average == 0
      txt = "    avg "
    else
      txt = "#{sprintf("%8.2f",@average)} "
    end
  else
    raise "unknown block type #{self.inspect}"
  end

  if @x < 0
    engine.render_string(sprintf("%#{@block.width}s", @name.length > @block.width ? @name[-@block.width..-1] : @name), txt)
  else
    engine.render_string(txt[1..-1], @name[0..@block.width-1])
  end


  glPopMatrix()

  t = glutGet(GLUT_ELAPSED_TIME)
  while( (@queue.size > 0) && (@last_time < t ) )

    @last_time += @step
    item = @queue.pop
    url = item.message
    color = item.color
    size = item.size
    type = item.type

    if type == 2
      @activities.push Activity.new(url, 0.0 - (0.008 * url.length), engine.screen.top, 0.0, color, size, type)
    elsif type == 5
      a = Activity.new(url, 0.0, engine.screen.top, 0.0, color, size, type)
      a.wx = @wx
      a.wy = @wy + 0.05
      @activities.push a
    elsif type != 4
      if @x >= 0
        @activities.push Activity.new(url, (@block.alignment - (@block.width+8)*8.0 / (engine.screen.window_width / 2.0)), @y + engine.screen.line_size/2, @z, color, size, type)
      else
        @activities.push Activity.new(url, (@block.alignment + (@block.width+8)*8.0 / (engine.screen.window_width / 2.0) ), @y + engine.screen.line_size/2, @z, color, size, type)
      end
    end
  end

  @activities.each do |a|
    if a.x > 1.0 || a.x < -1.0 || a.y < -(engine.screen.aspect*1.5)
      @activities.delete a
    else
      a.wy = @wy + 0.005 if(a.type == 5 && @wy != a.wy)
      a.render(engine)
      engine.stats[1] += 1
    end
  end

  @bar_color[0] = @bar_color[0] + (0.15 - @bar_color[0]) / 100
  @bar_color[1] = @bar_color[1] + (0.15 - @bar_color[1]) / 100
  @bar_color[2] = @bar_color[2] + (0.15 - @bar_color[2]) / 100

end

#render_events(engine) ⇒ Object 



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# File 'lib/gl_tail/element.rb', line 95

def render_events(engine)
  @color ||= [1.0, 1.0, 1.0, 1.0]

  t = glutGet(GLUT_ELAPSED_TIME)
  while( (@queue.size > 0) && (@last_time < t ) )

    @last_time += @step
    item = @queue.pop
    url = item.message
    color = item.color
    size = item.size
    type = item.type

    if type == 2
      @activities.push Activity.new(url, 0.0 - (0.008 * url.length), engine.screen.top, 0.0, color, size, type)
    end
  end

  @activities.each do |a|
    if a.x > 1.0 || a.x < -1.0 || a.y < -(engine.screen.aspect*1.5)
      @activities.delete a
    else
      a.wy = @wy + 0.005 if(a.type == 5 && @wy != a.wy)
      a.render(engine)
      engine.stats[1] += 1
    end
  end

end

#update ⇒ Object 



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# File 'lib/gl_tail/element.rb', line 73

def update
  @rate = (@rate * 299.0 + @messages) / 300.0
  @updates += 1
  @messages = 0
  size = @pending.size
  if size > 0
    @average = @sum / @total.to_f

    @step = 1.0 / size * 1000.0
    @queue = @pending
    if size == 1
      @step = rand(1000) * 1.0
    end
    @pending = []
  else
    @step = 0
  end
  @last_time = glutGet(GLUT_ELAPSED_TIME)
  @last_time += @step if @queue.size == 1
  @rate
end