1SbVec4f(3IV)()                                                  SbVec4f(3IV)()
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NAME

6       SbVec4f — 4D vector class
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INHERITS FROM

9       SbVec4f
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SYNOPSIS

12       #include <Inventor/SbLinear.h>
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14          Methods from class SbVec4f:
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16                         SbVec4f()
17                         SbVec4f(const float v[4])
18                         SbVec4f(float x, float y, float z, float w)
19     float               dot(const SbVec4f &v) const
20     SbBool              equals(const SbVec4f v, float tolerance) const
21     void                getReal(SbVec3f &v) const
22     const float *       getValue() const
23     void                getValue(float  &x,  float  &y,  float  &z, float &w)
24                              const
25     float               length() const
26     void                negate()
27                         normalize()
28     SbVec4f &           setValue(const float v[4])
29     SbVec4f &           setValue(float x, float y, float z, float w)
30     float &             operator [](int i)
31     const float &       operator [](int i)
32     SbVec4f &           operator *=(float d)
33     SbVec4f &           operator /=(float d)
34     SbVec4f &           operator +=(const SbVec4f &u)
35     SbVec4f &           operator -=(const SbVec4f &u)
36     SbVec4f             operator -() const
37     SbVec4f             operator *(const SbVec4f &v, float d)
38     SbVec4f             operator *(float d, const SbVec4f &v)
39     SbVec4f             operator /(const SbVec4f &v, float d)
40     SbVec4f             operator +(const SbVec4f &v1, const SbVec4f &v2)
41     SbVec4f             operator -(const SbVec4f &v1, const SbVec4f &v2)
42     int                 operator ==(const SbVec4f &v1, const SbVec4f &v2)
43     int                 operator !=(const SbVec4f &v1, const SbVec4f &v2)
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DESCRIPTION

47       4D vector class used to store homogeneous coordinates.  This  class  is
48       used in Inventor for arguments and return values.
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METHODS

51                         SbVec4f()
52          Default constructor.
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54                         SbVec4f(const float v[4])
55                         SbVec4f(float x, float y, float z, float w)
56          Constructor given vector components.
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58     float               dot(const SbVec4f &v) const
59          Returns dot (inner) product of vector and another vector.
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61     SbBool              equals(const SbVec4f v, float tolerance) const
62          Equality  comparison  within  given  tolerance  —  the square of the
63          length of the maximum distance between the two vectors.
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65     void                getReal(SbVec3f &v) const
66          Returns the real portion of the vector by  dividing  by  the  fourth
67          value.
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69     const float *       getValue() const
70     void                getValue(float  &x,  float  &y,  float  &z, float &w)
71                              const
72          Returns vector components.
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74     float               length() const
75          Returns geometric length of vector.
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77     void                negate()
78          Negates each component of vector in place.
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80                         normalize()
81          Changes vector to be unit length.
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83     SbVec4f &           setValue(const float v[4])
84     SbVec4f &           setValue(float x, float y, float z, float w)
85          Sets the vector components.
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87     float &             operator [](int i)
88     const float &       operator [](int i)
89          Accesses indexed component of vector.
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91     SbVec4f &           operator *=(float d)
92     SbVec4f &           operator /=(float d)
93          Component-wise scalar multiplication and division operators.
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95     SbVec4f &           operator +=(const SbVec4f &u)
96     SbVec4f &           operator -=(const SbVec4f &u)
97          Component-wise vector addition and subtraction operators.
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99     SbVec4f             operator -() const
100          Nondestructive unary negation — returns a new vector.
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102     SbVec4f             operator *(const SbVec4f &v, float d)
103     SbVec4f             operator *(float d, const SbVec4f &v)
104     SbVec4f             operator /(const SbVec4f &v, float d)
105          Component-wise binary scalar multiplication and division operators.
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107     SbVec4f             operator +(const SbVec4f &v1, const SbVec4f &v2)
108     SbVec4f             operator -(const SbVec4f &v1, const SbVec4f &v2)
109          Component-wise binary vector addition and subtraction operators.
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111     int                 operator ==(const SbVec4f &v1, const SbVec4f &v2)
112     int                 operator !=(const SbVec4f &v1, const SbVec4f &v2)
113          Equality comparison operators.
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SEE ALSO

117       SbVec2f, SbVec3f, SbVec2s, SbRotation
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122                                                                SbVec4f(3IV)()