1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/* XLogo4Schools - A Logo Interpreter specialized for use in schools, based on XLogo by Loic 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 Zurich,
* in the year 2013 and/or during future work.
*
* It is a reengineered version of XLogo written by Loic Le Coq, published
* under the GPL License at http://xlogo.tuxfamily.org/
*
* Contents of this file were initially written by Loic 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;
}
}
|
