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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.AmbientLight;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.DirectionalLight;
import javax.media.j3d.Light;
import javax.media.j3d.PointLight;
import javax.media.j3d.SpotLight;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Point3f;
import javax.vecmath.Vector3f;
import javax.media.j3d.BranchGroup;
public class MyLight extends BranchGroup
{
protected final static int LIGHT_OFF = 0;
protected final static int LIGHT_AMBIENT = 1;
protected final static int LIGHT_DIRECTIONAL = 2;
protected final static int LIGHT_POINT = 3;
protected final static int LIGHT_SPOT = 4;
protected final static float DEFAULT_ANGLE = 15;
private int type = LIGHT_OFF;
private Color3f color;
private Point3f position;
private Vector3f direction;
private float angle = DEFAULT_ANGLE;
private Light light;
MyLight(int type)
{
super();
this.type = type;
}
MyLight(int type, Color3f color, Point3f position)
{
super();
this.type = type;
this.color = color;
this.position = position;
}
/**
* This method creates a light according to each parameter:<br>
* type, color, position, direction and angle
*/
void createLight()
{
this.setCapability(BranchGroup.ALLOW_DETACH);
this.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE);
switch (type)
{
case LIGHT_OFF:
light = null;
break;
case LIGHT_AMBIENT:
light = new AmbientLight(color);
light.setInfluencingBounds(new BoundingSphere(new Point3d(position), Double.MAX_VALUE));
break;
case LIGHT_DIRECTIONAL:
light = new DirectionalLight(color, direction);
light.setInfluencingBounds(new BoundingSphere(new Point3d(position), Double.MAX_VALUE));
break;
case LIGHT_POINT:
light = new PointLight(color, position, new Point3f(1, 0, 0));
light.setInfluencingBounds(new BoundingSphere(new Point3d(position), Double.MAX_VALUE));
break;
case LIGHT_SPOT:
light = new SpotLight(color, position, new Point3f(1, 0, 0), direction, (float) Math.toRadians(angle),
64);
light.setInfluencingBounds(new BoundingSphere(new Point3d(position), Double.MAX_VALUE));
break;
}
if (null != light)
addChild(light);
}
/**
* This method returns the light type
*
* @return an integer which represents the light type
*/
int getType()
{
return type;
}
/**
* @param t
*/
void setType(int t)
{
type = t;
}
/**
* @return
*/
Color3f getColor()
{
return color;
}
/**
* @param c
*/
void setColor(Color3f c)
{
color = c;
}
/**
* @return
*/
Point3f getPosition()
{
return position;
}
/**
* @param p
*/
void setPosition(Point3f p)
{
position = p;
}
/**
* @return
*/
Vector3f getDirection()
{
return direction;
}
/**
* @param v
*/
void setDirection(Vector3f v)
{
direction = v;
}
/**
* @return
*/
float getAngle()
{
return angle;
}
/**
* @param f
*/
void setAngle(float f)
{
angle = f;
}
}
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