#VRML V2.0 utf8





Background {

	frontUrl 	"GC_f.jpg"

	backUrl 	"GC_b.jpg"

	leftUrl 	"GC_l.jpg"

	rightUrl 	"GC_r.jpg"

	topUrl 		"GC_u.jpg"

	bottomUrl 	"GC_d.jpg"

}



DEF view1 Viewpoint {

			position 0 0 20

			fieldOfView 0.7

			description "view1"

}



Group {

	children [

		

		DEF HudZoomIn Collision 

		{

	  		collide FALSE

	  		children 

	  		[

	    		DEF HudZoomInProx ProximitySensor 

	    		{

	      			center 0 1.8 30

	      			size 200 200 200

	    		}

	    		DEF HudZoomInXform Transform 

	    		{

	      			children 

	      			[

						DEF InXform Transform 

						{

		  					translation -0.03 -0.5 -1.5

		 			 		children 

		 			 		[

		    					Shape 

		    					{

		      						appearance Appearance 

		      						{

		    							texture ImageTexture  	{ url "plus.png" }

										material Material 		{ diffuseColor .8 .8 0 }

		      						}

		      						geometry Box 				{ size .06  .06 .0001}

		    					}

		    					DEF ZoomIn TouchSensor { }

		  					]

						}

	      			]

	    		}

	  		]



	  	}



		DEF HudZoomOut Collision 

		{

	  		collide FALSE

	  		children 

	  		[

	    		DEF HudZoomOutProx ProximitySensor 

	    		{

	      			center 0 1.8 30

	      			size 200 200 200

	    		}

	    		DEF HudZoomOutXform Transform 

	    		{

	      			children 

	      			[

						DEF OutXform Transform 

						{

		  					translation 0.03 -0.5 -1.5

		 			 		children 

		 			 		[

		    					Shape 

		    					{

		      						appearance Appearance 

		      						{

		    							texture ImageTexture  	{ url "minus.png" }

										material Material 		{ diffuseColor .8 .8 0 }

		      						}

		      						geometry Box 				{ size .06  .06 .0001}

		    					}

								DEF ZoomOut TouchSensor { }

		  					]

						}

	      			]

	    		}

	  		]



	  	}

	  	





	] # end of Group children

}



DEF zoomScript Script 

{

	eventIn 	SFBool 		zoomIn

	eventIn 	SFBool 		zoomOut

	eventOut 	SFFloat 	FOV

	eventOut	SFVec3f		transInZoom

	eventOut	SFVec3f		transOutZoom

	field 		SFFloat 	CFOV 	0.7

	field 		SFFloat 	z 	    1.0

	



	url ["javascript:

		function zoomIn( clicked ) 

		{

			if( clicked )

			{

				CFOV 		= 0.95 * CFOV;

				FOV 		= CFOV;

				z 			=  0.5 / Math.tan( 0.32175 * CFOV/0.7 ); 

				transInZoom.x = -0.03;

				transInZoom.y = -0.5;

				transInZoom.z = -z;

				transOutZoom.x = 0.03;

				transOutZoom.y = -0.5;

				transOutZoom.z = -z;

			}

		}

		function zoomOut( clicked ) 

		{

			if( clicked )

			{

				CFOV = 1.05 * CFOV;

				FOV = CFOV;

				z 			= 0.5 / Math.tan( 0.32175 * CFOV/0.7 ); 

				transInZoom.x = -0.03;

				transInZoom.y = -0.5;

				transInZoom.z = -z;

				transOutZoom.x = 0.03;

				transOutZoom.y = -0.5;

				transOutZoom.z = -z;

			}

		}

		"]

}









ROUTE ZoomIn.isActive 		TO zoomScript.zoomIn

ROUTE ZoomOut.isActive 		TO zoomScript.zoomOut

ROUTE zoomScript.FOV 		TO view1.fieldOfView



ROUTE HudZoomInProx.position_changed 	 TO HudZoomInProx.center

ROUTE HudZoomInProx.orientation_changed  TO HudZoomInXform.rotation

ROUTE HudZoomInProx.position_changed  	 TO HudZoomInXform.translation



ROUTE zoomScript.transInZoom				 TO InXform.translation



ROUTE HudZoomOutProx.position_changed 		TO HudZoomOutProx.center

ROUTE HudZoomOutProx.orientation_changed  	TO HudZoomOutXform.rotation

ROUTE HudZoomOutProx.position_changed  		TO HudZoomOutXform.translation



ROUTE zoomScript.transOutZoom				TO  OutXform.translation