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/* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Lo�c Le Coq
* Copyright (C) 2013 Marko Zivkovic
*
* Contact Information: marko88zivkovic at gmail dot com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version. This program is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details. You should have received a copy of the
* GNU General Public License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*
* This Java source code belongs to XLogo4Schools, written by Marko Zivkovic
* during his Bachelor thesis at the computer science department of ETH Z�rich,
* in the year 2013 and/or during future work.
*
* It is a reengineered version of XLogo written by Lo�c Le Coq, published
* under the GPL License at http://xlogo.tuxfamily.org/
*
* Contents of this file were initially written by Lo�c Le Coq,
* modifications, extensions, refactorings might have been applied by Marko Zivkovic
*/
package xlogo.kernel.perspective;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.LinearFog;
import javax.media.j3d.ExponentialFog;
import javax.media.j3d.Fog;
import javax.media.j3d.BoundingSphere;
import javax.vecmath.Color3f;
public class MyFog extends BranchGroup
{
protected final static int FOG_OFF = 0;
protected final static int FOG_LINEAR = 1;
protected final static int FOG_EXPONENTIAL = 2;
private int type = FOG_OFF;
private float density = 1;
private float backDistance = 3.5f;
private float frontDistance = 0.5f;
private Fog fog;
Color3f color;
MyFog(int type, Color3f color)
{
super();
setCapability(BranchGroup.ALLOW_DETACH);
setCapability(BranchGroup.ALLOW_CHILDREN_WRITE);
this.type = type;
this.color = color;
}
/**
* This method creates a light according to each parameter:<br>
* type, color, position, direction and angle
*/
void createFog()
{
this.setCapability(BranchGroup.ALLOW_DETACH);
this.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE);
switch (type)
{
case FOG_OFF:
fog = null;
break;
case FOG_LINEAR:
fog = new LinearFog(color);
((LinearFog) fog).setBackDistance(backDistance);
((LinearFog) fog).setFrontDistance(frontDistance);
fog.setInfluencingBounds(new BoundingSphere());
break;
case FOG_EXPONENTIAL:
fog = new ExponentialFog(color, density);
fog.setInfluencingBounds(new BoundingSphere());
break;
}
if (null != fog)
addChild(fog);
}
/**
* This method returns the light type
*
* @return an integer which represents the light type
* @uml.property name="type"
*/
int getType()
{
return type;
}
void setType(int t)
{
type = t;
}
float getDensity()
{
return density;
}
void setDensity(float f)
{
density = f;
}
float getBack()
{
return backDistance;
}
void setBack(float f)
{
backDistance = f;
}
float getFront()
{
return frontDistance;
}
void setFront(float f)
{
frontDistance = f;
}
}
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