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32
33 /*!
34 \class SoDecomposeRotation SoDecomposeRotation.h Inventor/engines/SoDecomposeRotation.h
35 \brief The SoDecomposeRotation class is used to decompose a rotation into angle and axis.
36
37 \ingroup engines
38 */
39
40 #include <Inventor/engines/SoDecomposeRotation.h>
41 #include <Inventor/lists/SoEngineOutputList.h>
42 #include <Inventor/fields/SoMFVec3f.h>
43 #include <Inventor/fields/SoMFFloat.h>
44
45 #include "engines/SoSubEngineP.h"
46
47 SO_ENGINE_SOURCE(SoDecomposeRotation);
48
49 /*!
50 \var SoMFRotation SoDecomposeRotation::rotation
51 Input rotations to decompose into axis + angle values.
52 */
53 /*!
54 \var SoEngineOutput SoDecomposeRotation::axis
55 (SoMFVec3f) The axis settings of the input rotations.
56 */
57 /*!
58 \var SoEngineOutput SoDecomposeRotation::angle
59 (SoMFFloat) The angle values of the input rotations.
60 */
61
62 #ifndef DOXYGEN_SKIP_THIS // No need to document these.
63
64 // Default constructor.
SoDecomposeRotation()65 SoDecomposeRotation::SoDecomposeRotation()
66 {
67 SO_ENGINE_INTERNAL_CONSTRUCTOR(SoDecomposeRotation);
68
69 SO_ENGINE_ADD_INPUT(rotation, (0.0f, 0.0f, 0.0f, 1.0f));
70
71 SO_ENGINE_ADD_OUTPUT(axis, SoMFVec3f);
72 SO_ENGINE_ADD_OUTPUT(angle, SoMFFloat);
73 }
74
75 // Documented in superclass.
76 void
initClass()77 SoDecomposeRotation::initClass()
78 {
79 SO_ENGINE_INTERNAL_INIT_CLASS(SoDecomposeRotation);
80 }
81
82 //
83 // private members
84 //
~SoDecomposeRotation()85 SoDecomposeRotation::~SoDecomposeRotation()
86 {
87 }
88
89 // Documented in superclass.
90 void
evaluate()91 SoDecomposeRotation::evaluate()
92 {
93 int num = this->rotation.getNum();
94
95 SO_ENGINE_OUTPUT(axis,SoMFVec3f,setNum(num));
96 SO_ENGINE_OUTPUT(angle,SoMFFloat,setNum(num));
97
98 int i;
99 float angleVal;
100 SbVec3f axisVal;
101 for (i = 0; i < num; i++) {
102 this->rotation[i].getValue(axisVal,angleVal);
103 SO_ENGINE_OUTPUT(axis,SoMFVec3f,set1Value(i,axisVal));
104 SO_ENGINE_OUTPUT(angle,SoMFFloat,set1Value(i,angleVal));
105 }
106 }
107
108 #endif // !DOXYGEN_SKIP_THIS
109