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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*
* Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
package javax.media.j3d;
import java.util.ArrayList;
import javax.vecmath.Color3f;
/**
* The LinearFog leaf node defines distance parameters for
* linear fog.
*/
class LinearFogRetained extends FogRetained {
/**
* Fog front and back distance
*/
private double frontDistance = 0.1;
private double backDistance = 1.0;
private double frontDistanceInEc;
private double backDistanceInEc;
// dirty bits for LinearFog
static final int FRONT_DISTANCE_CHANGED = FogRetained.LAST_DEFINED_BIT << 1;
static final int BACK_DISTANCE_CHANGED = FogRetained.LAST_DEFINED_BIT << 2;
LinearFogRetained() {
this.nodeType = NodeRetained.LINEARFOG;
}
/**
* Initializes front distance for fog before the object is live
*/
void initFrontDistance(double frontDistance){
this.frontDistance = frontDistance;
}
/**
* Sets front distance for fog and sends a message
*/
void setFrontDistance(double frontDistance){
this.frontDistance = frontDistance;
J3dMessage createMessage = new J3dMessage();
createMessage.threads = targetThreads;
createMessage.type = J3dMessage.FOG_CHANGED;
createMessage.universe = universe;
createMessage.args[0] = this;
createMessage.args[1]= new Integer(FRONT_DISTANCE_CHANGED);
createMessage.args[2] = new Double(frontDistance);
VirtualUniverse.mc.processMessage(createMessage);
}
/**
* Gets front distance for fog
*/
double getFrontDistance(){
return this.frontDistance;
}
/**
* Initializes back distance for fog
*/
void initBackDistance(double backDistance){
this.backDistance = backDistance;
}
/**
* Sets back distance for fog
*/
void setBackDistance(double backDistance){
this.backDistance = backDistance;
J3dMessage createMessage = new J3dMessage();
createMessage.threads = targetThreads;
createMessage.type = J3dMessage.FOG_CHANGED;
createMessage.universe = universe;
createMessage.args[0] = this;
createMessage.args[1]= new Integer(BACK_DISTANCE_CHANGED);
createMessage.args[2] = new Double(backDistance);
VirtualUniverse.mc.processMessage(createMessage);
}
/**
* Gets back distance for fog
*/
double getBackDistance(){
return this.backDistance;
}
/**
* This method and its native counterpart update the native context
* fog values.
*/
@Override
void update(Context ctx, double scale) {
validateDistancesInEc(scale);
Pipeline.getPipeline().updateLinearFog(ctx,
color.x, color.y, color.z, frontDistanceInEc, backDistanceInEc);
}
@Override
void setLive(SetLiveState s) {
super.setLive(s);
// Initialize the mirror object, this needs to be done, when
// renderBin is not accessing any of the fields
J3dMessage createMessage = new J3dMessage();
createMessage.threads = J3dThread.UPDATE_RENDERING_ENVIRONMENT;
createMessage.universe = universe;
createMessage.type = J3dMessage.FOG_CHANGED;
createMessage.args[0] = this;
// a snapshot of all attributes that needs to be initialized
// in the mirror object
createMessage.args[1]= new Integer(INIT_MIRROR);
ArrayList addScopeList = new ArrayList();
for (int i = 0; i < scopes.size(); i++) {
GroupRetained group = scopes.get(i);
tempKey.reset();
group.addAllNodesForScopedFog(mirrorFog, addScopeList, tempKey);
}
Object[] scopeInfo = new Object[2];
scopeInfo[0] = ((scopes.size() > 0) ? Boolean.TRUE:Boolean.FALSE);
scopeInfo[1] = addScopeList;
createMessage.args[2] = scopeInfo;
Color3f clr = new Color3f(color);
createMessage.args[3] = clr;
Object[] obj = new Object[6];
obj[0] = boundingLeaf;
obj[1] = (regionOfInfluence != null?regionOfInfluence.clone():null);
obj[2] = (inBackgroundGroup? Boolean.TRUE:Boolean.FALSE);
obj[3] = geometryBackground;
obj[4] = new Double(frontDistance);
obj[5] = new Double(backDistance);
createMessage.args[4] = obj;
VirtualUniverse.mc.processMessage(createMessage);
}
// The update Object function.
// Note : if you add any more fields here , you need to update
// updateFog() in RenderingEnvironmentStructure
@Override
synchronized void updateMirrorObject(Object[] objs) {
int component = ((Integer)objs[1]).intValue();
if ((component & FRONT_DISTANCE_CHANGED) != 0)
((LinearFogRetained)mirrorFog).frontDistance = ((Double)objs[2]).doubleValue();
if ((component & BACK_DISTANCE_CHANGED) != 0)
((LinearFogRetained)mirrorFog).backDistance = ((Double)objs[2]).doubleValue();
if ((component & INIT_MIRROR) != 0) {
((LinearFogRetained)mirrorFog).frontDistance = ((Double)((Object[])objs[4])[4]).doubleValue();
((LinearFogRetained)mirrorFog).backDistance = ((Double)((Object[])objs[4])[5]).doubleValue();
}
((LinearFogRetained)mirrorFog).setLocalToVworldScale(getLastLocalToVworld().getDistanceScale());
super.updateMirrorObject(objs);
}
/**
* Scale distances from local to eye coordinate
*/
@Override
protected void validateDistancesInEc(double vworldToCoexistenceScale) {
// vworldToCoexistenceScale can be used here since
// CoexistenceToEc has a unit scale
double localToEcScale = getLocalToVworldScale() * vworldToCoexistenceScale;
frontDistanceInEc = frontDistance * localToEcScale;
backDistanceInEc = backDistance * localToEcScale;
}
}
|
