Class: RBGLox::Window

Inherits:
Object
  • Object
show all
Includes:
Gl, Glfw, Glu, Glut
Defined in:
lib/rbglox/window.rb

Overview

Semi-abstract Window class

Direct Known Subclasses

App

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Window

Constructor



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# File 'lib/rbglox/window.rb', line 11

def initialize
  @title = 'rbGLox'
  @width = 640
  @height= 480
  @multisample = 0
  @vsync = 0
  @watch = nil
end

Instance Attribute Details

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/rbglox/window.rb', line 8

def height
  @height
end

#multisample ⇒ Object

Returns the value of attribute multisample.



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# File 'lib/rbglox/window.rb', line 8

def multisample
  @multisample
end

#title ⇒ Object

Returns the value of attribute title.



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# File 'lib/rbglox/window.rb', line 8

def title
  @title
end

#vsync ⇒ Object

Returns the value of attribute vsync.



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# File 'lib/rbglox/window.rb', line 8

def vsync
  @vsync
end

#watch ⇒ Object

Returns the value of attribute watch.



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# File 'lib/rbglox/window.rb', line 8

def watch
  @watch
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/rbglox/window.rb', line 8

def width
  @width
end

Instance Method Details

#begin_frame ⇒ Object

User defined method called when entering a frame



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# File 'lib/rbglox/window.rb', line 148

def begin_frame
  glClear GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT
  glLoadIdentity
end

#close ⇒ Object

Closes the currently active open window



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# File 'lib/rbglox/window.rb', line 21

def close
  glfwCloseWindow
end

#draw ⇒ Object

User defined draw method

Raises:

  • (NotImplementedError) 


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# File 'lib/rbglox/window.rb', line 159

def draw
   raise NotImplementedError
end

#end_frame ⇒ Object

User defined method called when leaving the frame



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# File 'lib/rbglox/window.rb', line 154

def end_frame
  glfwSwapBuffers
end

#exec ⇒ Object

Opens the window and fires up the event loop



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# File 'lib/rbglox/window.rb', line 61

def exec
  glutInit

  glfwOpenWindowHint GLFW_WINDOW_NO_RESIZE, true
  #glfwOpenWindowHint GLFW_FSAA_SAMPLE, multisample
 
  glfwOpenWindow width, height, 0, 0, 0, 0, 32, 0, GLFW_WINDOW

  glfwSetWindowPos 0, 0
  glfwSetWindowTitle title
  glfwEnable GLFW_KEY_REPEAT
  glfwSwapInterval vsync

  glfwSetWindowSizeCallback lambda { |w, h| resize(w, h) }

  trap('INT') do
    glfwCloseWindow
  end

  unless watch.nil?
    puts "Watching #{watch} for changes ..."
    dw = DirectoryWatcher.new watch, :glob => "**/*", :pre_load => true, :interval => 1
    dw.add_observer do |*args|
      args.each do |event|
        reload event
      end
    end
    dw.start
  end

  glClearColor 0.2, 0.2, 0.2, 1
glClearDepth 1.0

  glEnable GL_DEPTH_TEST
glDepthFunc GL_LEQUAL 
	
  glShadeModel GL_SMOOTH
  glHint GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST

  glEnable GL_TEXTURE_2D
glEnable GL_COLOR_MATERIAL
glEnable GL_NORMALIZE

  puts 'init'
  init

  while true
    break unless glfwGetWindowParam GLFW_OPENED
    break if key? GLFW_KEY_ESC
    
    update

    begin_frame
      draw
    end_frame
  end

  unless watch.nil?
    dw.stop
  end

  shutdown
  puts 'shutdown'
end

#init ⇒ Object

User defined initializations



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# File 'lib/rbglox/window.rb', line 127

def init
end

#key?(key) ⇒ Boolean

Returns TRUE if the given key is PRESSED, otherwise FALSE

Returns:

  • (Boolean) 


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# File 'lib/rbglox/window.rb', line 26

def key?(key)
  glfwGetKey(key) == GLFW_PRESS
end

#mouse?(button = GLFW_MOUSE_BUTTON_LEFT) ⇒ Boolean

Returns TRUE if the given mouse button is PRESSED, otherwise FALSE

Returns:

  • (Boolean) 


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# File 'lib/rbglox/window.rb', line 31

def mouse?(button = GLFW_MOUSE_BUTTON_LEFT)
  glfwGetMouseButton(button) == GLFW_PRESS
end

#mouse_left? ⇒ Boolean

Return TRUE if the left mouse button is PRESSED, otherwise FALSE

Returns:

  • (Boolean) 


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# File 'lib/rbglox/window.rb', line 36

def mouse_left?
  mouse?
end

#mouse_pos? ⇒ Boolean

Returns the current mouse position (tuple)

Returns:

  • (Boolean) 


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# File 'lib/rbglox/window.rb', line 46

def mouse_pos?
  glfwGetMousePos
end

#mouse_right? ⇒ Boolean

Return TRUE if the right mouse button is PRESSED, otherwise FALSE

Returns:

  • (Boolean) 


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# File 'lib/rbglox/window.rb', line 41

def mouse_right?
  mouse? GLFW_MOUSE_BUTTON_RIGHT
end

#mouse_wheel? ⇒ Boolean

Returns the current mouse wheel delta position

Returns:

  • (Boolean) 


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# File 'lib/rbglox/window.rb', line 51

def mouse_wheel?
  glfwGetMouseWheel
end

#reload(event) ⇒ Object

User defined reload event method



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# File 'lib/rbglox/window.rb', line 169

def reload(event)
  # empty
end

#resize(w, h) ⇒ Object

User defined window resize, sets up viewport and perspective projection



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# File 'lib/rbglox/window.rb', line 135

def resize(w, h)
  glViewport 0, 0, w, h
	
glMatrixMode GL_PROJECTION
glLoadIdentity
	
gluPerspective 45.0, w.to_f/h.to_f, 0.1, 1000.0
	
glMatrixMode GL_MODELVIEW
glLoadIdentity
end

#shutdown ⇒ Object

User defined shutdown



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# File 'lib/rbglox/window.rb', line 131

def shutdown
end

#time ⇒ Object

Returns the current tick count



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# File 'lib/rbglox/window.rb', line 56

def time
  glfwGetTime
end

#update ⇒ Object

User defined update method



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# File 'lib/rbglox/window.rb', line 164

def update
  # empty
end