// DualJoint1D.java

import java.awt.* ;

import vrml.external.field.*;
import vrml.external.exception.*;
import vrml.external.Node;
import vrml.external.Browser;

public class DualJoint1D extends DualSlider1D {
	String jointName ;
	public float orientL[] = new float [ 4 ] ;
	public float orientR[] = new float [ 4 ] ;
	float loLimit = 0, hiLimit = (float)( Math . PI ) ;
	EventOutSFRotation orientLOut, orientROut ;
	EventInSFRotation orientLIn, orientRIn ;
	Node nodeL = null, nodeR = null ;

	public DualJoint1D ( String ttl, Vrml2Java vj, String jName,
		float normalPos, float extremePos ) {
		super ( ttl ) ;
		jointName = jName ;
		loLimit = normalPos ;
		hiLimit = extremePos ;
		setXPos ( -1F, LEFT ) ;
		setXPos ( -1F, RIGHT ) ;
		if ( vj == null )
			return ;
		try {
			nodeL = vj . browser . getNode ( "hanim_l_" + jName ) ;
			orientLIn = (EventInSFRotation)nodeL . getEventIn ( "set_rotation" ) ;
			orientLOut = (EventOutSFRotation)nodeL . getEventOut (
				"rotation_changed" ) ;
		}
		catch ( InvalidNodeException ine ) {
			leftSlider . disable() ;
		}
		catch ( InvalidEventInException e ) {
			System . out . println ( "Error: " + e ) ;
		}
		catch ( InvalidEventOutException e ) {
			System . out . println ( "Error: " + e ) ;
		}
		try {
			nodeR = vj . browser . getNode ( "hanim_r_" + jName ) ;
			orientRIn = (EventInSFRotation)nodeR . getEventIn ( "set_rotation" ) ;
			orientROut = (EventOutSFRotation)nodeR . getEventOut (
				"rotation_changed" ) ;
		}
		catch ( InvalidNodeException ine ) {
			rightSlider . disable() ;
		}
		catch ( InvalidEventInException e ) {
			System . out . println ( "Error: " + e ) ;
		}
		catch ( InvalidEventOutException e ) {
			System . out . println ( "Error: " + e ) ;
		}
	}

	public boolean handleEvent(Event event) {
		if ( event . id == Event . ACTION_EVENT && event . target == this ) {
			if ( nodeL != null ) {
				float f[] = new float [ 4 ] ;
				f[0] = 1F ;
				f[1] = 0F ;
				f[2] = 0F ;
				float val = loLimit + ( getXPos ( LEFT ) + 1 )
					* ( hiLimit - loLimit ) / 2 ;
				f[3] = (float)( 2 * Math . PI * val ) ;
				setOrientation(f,LEFT);
			}

			if ( nodeR != null ) {
				float f[] = new float [ 4 ] ;
				f[0] = 1F ;
				f[1] = 0F ;
				f[2] = 0F ;
				float val = loLimit + ( getXPos ( RIGHT ) + 1 )
					* ( hiLimit - loLimit ) / 2 ;
				f[3] = (float)( 2 * Math . PI * val ) ;
				setOrientation(f,RIGHT);
			}

			return false ;
		}
		return ( super . handleEvent ( event ) ) ;
	}

	public float[] getOrientation ( int sType ) {
		if ( sType == DualSlider1D . LEFT ) {
			orientL = orientLOut . getValue() ;
			return orientL ;
		}
		if ( sType == DualSlider1D . RIGHT ) {
			orientR = orientROut . getValue() ;
			return orientR ;
		}
		return null ;
	}

	public void setOrientation ( float orientNew[], int sType ) {
		if ( sType == DualSlider1D . LEFT ) {
			orientL = orientNew ;
			orientLIn . setValue ( orientL ) ;
		}
		if ( sType == DualSlider1D . RIGHT ) {
			orientR = orientNew ;
			orientRIn . setValue ( orientR ) ;
		}
	}

	/**
	 * Get the joint name without the hanim_ or l_ or r_ prefixes.
	 *
	 * @return	the name of the joint
	 */
	 String getJointName() {
	 	return ( jointName ) ;
	 }
}