JRubyでJava3D その１、改１

Java3DをRubyっぽく扱うように、簡単なモジュールを作ってみた。

  def initApplet()

    rApplet do |applet|

      canvas = rSimpleUniverseCanvas

      scene = createSceneGraph()

      scene.compile()  

      rSimpleUniverse(canvas){|universe|;universe.addBranchGraph(scene);}

      applet.add("Center", canvas)

    end

  end

前回に比べて、initAppletの内部が一寸Rubyっぽい＾＾

挑戦「一日一改善」

JRuby3D.rb

require 'java'
module JRuby3D

  include_package 'java.applet'

  include_package 'javax.media.j3d'

  

  include_class 'java.awt.BorderLayout'

  

  def rApplet

    applet = Applet.new()

    applet.setLayout(BorderLayout.new())

    

    yield applet

    

    return applet

  end

  

  def rSimpleUniverse(canvas)

    simpleUniverse = SimpleUniverse.new(canvas)

    simpleUniverse.getViewingPlatform().setNominalViewingTransform()

      

    yield simpleUniverse

    

    return simpleUniverse

  end

  

  include_class 'com.sun.j3d.utils.universe.SimpleUniverse'

  

  def rSimpleUniverseCanvas

    config = SimpleUniverse.getPreferredConfiguration()

    return Canvas3D.new(config)

  end

  

  

  def rBranchGroup

    bg = BranchGroup.new()

    yield bg

    return bg

  end

end


module Hello3D

  include_class 'com.sun.j3d.utils.geometry.ColorCube'

  

  include JRuby3D

  

  def initApplet()

    rApplet do |applet|

      canvas = rSimpleUniverseCanvas
      

      scene = createSceneGraph()

      scene.compile()

      

      rSimpleUniverse(canvas){|universe|;universe.addBranchGraph(scene);}

      

      applet.add("Center", canvas)

    end

  end

  

  include_package 'javax.media.j3d'

  

  def createSceneGraph()

    rBranchGroup{|objRoot|

      

      rotate = Transform3D.new()

      tempRotate = Transform3D.new()

      

      rotate.rotX(Math::PI/4.0)

      tempRotate.rotY(Math::PI/5.0)

      rotate.mul(tempRotate)

      

      objRotate = TransformGroup.new(rotate);

      

      objSpin = TransformGroup.new();

      objSpin.setCapability(TransformGroup::ALLOW_TRANSFORM_WRITE)

      

      objRoot.addChild(objRotate)

      objRotate.addChild(objSpin)

      

      objSpin.addChild(ColorCube.new(0.4))

      

      yAxis = Transform3D.new()

      rotationAlpha = Alpha.new(-1, 4000)

      

      rotator = RotationInterpolator.new(rotationAlpha, objSpin, yAxis, 0.0, Math::PI*2.0)

      

      bounds = BoundingSphere.new()

      

      rotator.setSchedulingBounds(bounds)

      objSpin.addChild(rotator)

    }

  end

end

java3dtest.rb

require 'JRuby3D'
include Hello3D
MainFram  = com.sun.j3d.utils.applet.MainFrame

frame = MainFram.new(initApplet(), 256, 256)