Module: DefaultScene

Included in:
Scene
Defined in:
lib/scene/default_scene.rb

Instance Method Summary collapse

Instance Method Details

#display ⇒ Object 



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# File 'lib/scene/default_scene.rb', line 3

def display
  right, left = -1, 1
  bottom, top = -1, 1
  front, back = -1, 1
  
  lbf = [left, bottom, front]
  lbb = [left, bottom, back]
  ltf = [left, top, front]
  ltb = [left, top, back]
  rbf = [right, bottom, front]
  rbb = [right, bottom, back]
  rtf = [right, top, front]
  rtb = [right, top, back]
  
  right = [rbf, rbb, rtb, rtf]
  left = [lbf, ltf, ltb, lbb]
  bottom = [lbf, lbb, rbb, rbf]
  top = [ltf, rtf, rtb, ltb]
  front = [lbf, rbf, rtf, ltf]
  back = [lbb, ltb, rtb, rbb]
  
  glLineWidth(5)
  [right, left, bottom, top, front, back].each do |face|
    glBegin(GL_POLYGON)
    face.each do |vertex|
      color = vertex
      glColor3f(*color)
      glVertex3f(*vertex)
    end
    glEnd
    
    if @show_outline
      @outline ||= [rand, rand, rand]
      glColor3f(*@outline)
      glBegin(GL_LINE_LOOP)
      face.each { |v| glVertex3f(*v) }
      glEnd
    end
  end
end

#keyboard(key, x, y) ⇒ Object 



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# File 'lib/scene/default_scene.rb', line 57

def keyboard(key, x, y)
  case key
  when 'q'
    exit(0)
  when 'h'
    puts
    puts 'H            : Display help'
    puts 'Q            : Quit'
    puts 'O            : Toggle outline'
    puts 'Left click   : Inverse x-rotation'
    puts 'Middle click : Inverse y-rotation'
    puts 'Right click  : Inverse z-rotation'
    puts
    puts 'Visit https://github.com/tuzz/scene for more information'
  when 'o'
    @show_outline = !@show_outline
  end
end

#mouse(button, state, x, y) ⇒ Object 



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# File 'lib/scene/default_scene.rb', line 76

def mouse(button, state, x, y)
  return unless state == GLUT_DOWN
  @axes[button] *= -1
end

#reshape(width, height) ⇒ Object 



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# File 'lib/scene/default_scene.rb', line 81

def reshape(width, height)
  min = [width, height].min
  x = (width - min) / 2
  y = (height - min) / 2
  glViewport(x, y, min, min)
end

#timer(elapsed) ⇒ Object 



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# File 'lib/scene/default_scene.rb', line 44

def timer(elapsed)
  @show_outline = true if @show_outline.nil?
  @axes ||= [1, 1, 1]
  glRotatef(elapsed * 60, *@axes)
  
  @counter ||= 0
  @counter += 1
  if @counter == 100
    @outline = [rand, rand, rand]
    @counter = 0
  end
end