Module: RAGE

Defined in:
lib/rage.rb,
lib/rage/game.rb,
lib/rage/mesh.rb,
lib/rage/text.rb,
lib/rage/audio.rb,
lib/rage/color.rb,
lib/rage/input.rb,
lib/rage/camera.rb,
lib/rage/common.rb,
lib/rage/loader.rb,
lib/rage/window.rb,
lib/rage/location.rb,
lib/rage/resource.rb,
lib/rage/viewport.rb

Overview

Viewport constructs and methods

Copyright © 2010 Mohammed Morsi <[email protected]> Licensed under the GPLv3+ www.gnu.org/licenses/gpl.txt

Defined Under Namespace

Modules: InputHandlers Classes: Audio, Camera, Color, Game, InputHandler, Loader, Location, LocationsManager, Logger, Mesh, ResourcesManager, Text, Viewport, Window

Class Method Summary collapse

Class Method Details

.to_3d_coordinates(x2, y2) ⇒ Object

Helper method to get 3d coords cooresponding to 2d ones via OPENGL unprojection



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# File 'lib/rage/location.rb', line 142

def to_3d_coordinates(x2, y2)
  model_view = Gl.glGetDoublev Gl::GL_MODELVIEW_MATRIX
  projection = Gl.glGetDoublev Gl::GL_PROJECTION_MATRIX
  viewport   = Gl.glGetIntegerv Gl::GL_VIEWPORT
  depth      = Gl.glReadPixels x2, y2, 1, 1, Gl::GL_DEPTH_COMPONENT, Gl::GL_FLOAT
  x3, y3, z3 = Glu.gluUnProject x2, y2, depth[0], model_view, projection, viewport
  return [x3, y3, z3]
end