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
|
/**************************************************************************\
* Copyright (c) Kongsberg Oil & Gas Technologies AS
* All rights reserved.
*
* 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 the copyright holder 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
* HOLDER 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.
\**************************************************************************/
/*!
\class SoScale SoScale.h Inventor/nodes/SoScale.h
\brief The SoScale class is a node type for scaling scene graph geometry.
\ingroup coin_nodes
Use nodes of this type to apply scaling operations during scene graph
traversals for e.g. rendering. Scale values are specified in a
triple-value vector, with one scale factor for each of the 3
principal axes.
<b>FILE FORMAT/DEFAULTS:</b>
\code
Scale {
scaleFactor 1 1 1
}
\endcode
*/
// *************************************************************************
#include <Inventor/nodes/SoScale.h>
#include <Inventor/actions/SoGetMatrixAction.h>
#include <Inventor/actions/SoGLRenderAction.h>
#include <Inventor/elements/SoModelMatrixElement.h>
#include "nodes/SoSubNodeP.h"
// *************************************************************************
/*!
\var SoSFVec3f SoScale::scaleFactor
Specifies scaling along the 3 axes.
To get a uniform scale applied to the affected shapes, set the
scaleFactor field to a vector with the same value for all
components.
A common error when doing non-uniform scaling in a single direction
is to set the value for the other two components of the scaleFactor
vector to 0. This is obviously wrong, they should be set to 1 to \e
not scale the shape(s) in the other two directions.
Be careful with setting scaleFactor component values to 0 or to
negative values. Most shapes should handle those cases somehow, but
the results are undefined unless otherwise specified.
The default value of this vector field is [1.0, 1.0, 1.0].
*/
// *************************************************************************
SO_NODE_SOURCE(SoScale);
// *************************************************************************
/*!
Constructor.
*/
SoScale::SoScale(void)
{
SO_NODE_INTERNAL_CONSTRUCTOR(SoScale);
SO_NODE_ADD_FIELD(scaleFactor, (1.0f, 1.0f, 1.0f));
}
/*!
Destructor.
*/
SoScale::~SoScale()
{
}
// Doc in superclass.
/*!
\copybrief SoBase::initClass(void)
*/
void
SoScale::initClass(void)
{
SO_NODE_INTERNAL_INIT_CLASS(SoScale, SO_FROM_INVENTOR_1|SoNode::VRML1);
}
// Doc in superclass.
void
SoScale::doAction(SoAction * action)
{
SoModelMatrixElement::scaleBy(action->getState(), this,
this->scaleFactor.getValue());
}
// Doc in superclass.
void
SoScale::GLRender(SoGLRenderAction * action)
{
SoScale::doAction((SoAction *)action);
}
// Doc in superclass.
void
SoScale::getBoundingBox(SoGetBoundingBoxAction * action)
{
SoScale::doAction((SoAction *)action);
}
// Doc in superclass.
void
SoScale::callback(SoCallbackAction *action)
{
SoScale::doAction((SoAction*)action);
}
// Doc in superclass.
void
SoScale::getMatrix(SoGetMatrixAction * action)
{
SbVec3f scalevec = this->scaleFactor.getValue();
SbMatrix m;
m.setScale(scalevec);
action->getMatrix().multLeft(m);
m.setScale(SbVec3f(1.0f / scalevec[0], 1.0f / scalevec[1], 1.0f / scalevec[2]));
action->getInverse().multRight(m);
}
// Doc in superclass.
void
SoScale::pick(SoPickAction *action)
{
SoScale::doAction((SoAction*)action);
}
// Doc in superclass. Overrides the traversal method in this class for
// the SoGetPrimitiveCountAction because the number of primitives can
// be different depending on scene location (and thereby distance to
// camera) if there are e.g. SoLOD nodes in the scene.
void
SoScale::getPrimitiveCount(SoGetPrimitiveCountAction *action)
{
SoScale::doAction((SoAction*)action);
}
|