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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
#include "lightmodel.h"
/*!
\class LightModel
\brief The LightModel class defines the lighting model to use for the scene.
\since 4.7
\ingroup qt3d
\ingroup qt3d::painting
*/
/*!
\enum LightModel::Model
This enum defines the type of lighting model to use: one-sided or two-sided.
\value OneSided One-sided lighting, with the front face material used for both front and back faces.
\value TwoSided Two-sided lighting, with separate front and back face materials.
*/
/*!
\enum LightModel::ColorControl
This enum controls the number of colors to be generated by the lighting computation.
\value SingleColor A single color is generated by the lighting computation.
\value SeparateSpecularColor A separate specular color computation is
performed and then summed into the pixel color after texture mapping.
*/
/*!
\enum LightModel::ViewerPosition
This enum defines the position of the viewer for the purposes of lighting calculations.
\value ViewerAtInfinity The viewer is at infinity along the -z axis.
\value LocalViewer The viewer is at the local origin in eye coordinates.
*/
class LightModelPrivate
{
public:
LightModelPrivate()
: model(LightModel::OneSided),
colorControl(LightModel::SingleColor),
viewerPosition(LightModel::ViewerAtInfinity)
{
ambientSceneColor.setRgbF(0.2, 0.2, 0.2, 1.0);
}
LightModel::Model model;
LightModel::ColorControl colorControl;
LightModel::ViewerPosition viewerPosition;
QColor ambientSceneColor;
};
/*!
Constructs a light model object with default values and attach
it to \a parent.
*/
LightModel::LightModel(QObject *parent)
: QObject(parent), d_ptr(new LightModelPrivate)
{
}
/*!
Destroys this light model.
*/
LightModel::~LightModel()
{
}
/*!
\property LightModel::model
\brief the lighting model to use, either OneSided or TwoSided.
The default is OneSided.
\sa modelChanged()
*/
LightModel::Model LightModel::model() const
{
Q_D(const LightModel);
return d->model;
}
void LightModel::setModel(LightModel::Model value)
{
Q_D(LightModel);
if (d->model != value) {
d->model = value;
emit modelChanged();
emit lightModelChanged();
}
}
/*!
\property LightModel::colorControl
\brief the color control mode, either SingleColor or
SeparateSpecularColor. The default value is SingleColor.
If SingleColor is specified, then a single color is calculated
by the lighting computation for a vertex. If SeparateSpecularColor
is specified, then a separate specular color computation is
performed and then summed into the pixel color after texture mapping.
\sa colorControlChanged()
*/
LightModel::ColorControl LightModel::colorControl() const
{
Q_D(const LightModel);
return d->colorControl;
}
void LightModel::setColorControl(LightModel::ColorControl value)
{
Q_D(LightModel);
if (d->colorControl != value) {
d->colorControl = value;
emit colorControlChanged();
emit lightModelChanged();
}
}
/*!
\property LightModel::viewerPosition
\brief the viewer position, either ViewerAtInfinity or LocalViewer.
The default value is ViewerAtInfinity.
\sa viewerPositionChanged()
*/
LightModel::ViewerPosition LightModel::viewerPosition() const
{
Q_D(const LightModel);
return d->viewerPosition;
}
void LightModel::setViewerPosition(LightModel::ViewerPosition value)
{
Q_D(LightModel);
if (d->viewerPosition != value) {
d->viewerPosition = value;
emit viewerPositionChanged();
emit lightModelChanged();
}
}
/*!
\property LightModel::ambientSceneColor
\brief the ambient color of the entire scene. The default value
is (0.2, 0.2, 0.2, 1.0).
\sa ambientSceneColorChanged()
*/
QColor LightModel::ambientSceneColor() const
{
Q_D(const LightModel);
return d->ambientSceneColor;
}
void LightModel::setAmbientSceneColor(const QColor& value)
{
Q_D(LightModel);
if (d->ambientSceneColor != value) {
d->ambientSceneColor = value;
emit ambientSceneColorChanged();
emit lightModelChanged();
}
}
/*!
\fn void LightModel::modelChanged()
This signal is emitted when model() changes.
\sa model(), lightModelChanged()
*/
/*!
\fn void LightModel::colorControlChanged()
This signal is emitted when colorControl() changes.
\sa colorControl(), lightModelChanged()
*/
/*!
\fn void LightModel::viewerPositionChanged()
This signal is emitted when viewerPosition() changes.
\sa viewerPosition(), lightModelChanged()
*/
/*!
\fn void LightModel::ambientSceneColorChanged()
This signal is emitted when ambientSceneColor() changes.
\sa ambientSceneColor(), lightModelChanged()
*/
/*!
\fn void LightModel::lightModelChanged()
This signal is emitted when one of model(), colorControl(),
viewerPosition(), or ambientSceneColor() changes.
*/
|
