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SbColor Class Reference
Basics

Color vector class. More...

#include <Inventor/SbColor.h>

Inheritance diagram for SbColor:
SbVec3f

Public Member Functions

 SbColor ()
 Default constructor.
 
 SbColor (const SbVec3f vec3f)
 Constructors for color vector.
 
 SbColor (const float rgb[3])
 Constructors for color vector.
 
 SbColor (float r, float g, float b)
 Constructors for color vector.
 
SbColor & setHSVValue (float h, float s, float v)
 Sets value of color vector from 3 HSV (Hue, Saturation, and Value) components.
 
SbColor & setHSVValue (const float hsv[3])
 Sets value of color vector from array of 3 HSV components.
 
void getHSVValue (float &h, float &s, float &v) const
 Returns 3 individual hsv components.
 
void getHSVValue (float hsv[3]) const
 Returns an array of 3 hsv components.
 
SbColor & setPackedValue (uint32_t orderedRGBA, float &transparency)
 Sets value of color vector from an RGBA packed color value.
 
uint32_t getPackedValue (float transparency=0.0) const
 Returns an RGBA packed color value, derived from the color vector and the passed transparency value.
 
- Public Member Functions inherited from SbVec3f
 SbVec3f ()
 Default constructor.
 
 SbVec3f (const float v[3])
 Constructor given vector components.
 
 SbVec3f (float x, float y, float z)
 Constructor given vector components.
 
 SbVec3f (SbPlane &p0, SbPlane &p1, SbPlane &p2)
 Constructor given 3 planes.
 
SbVec3f cross (const SbVec3f &v) const
 Returns right-handed cross product of vector and another vector.
 
float dot (const SbVec3f &v) const
 Returns dot (inner) product of vector and another vector.
 
const float * getValue () const
 Returns vector components.
 
void getValue (float &x, float &y, float &z) const
 Returns vector components.
 
float length () const
 Returns geometric length of vector.
 
float normalize ()
 Changes vector to be unit length, returning the length before normalization.
 
void negate ()
 Negates each component of vector in place.
 
SbVec3f & setValue (const float v[3])
 Sets the vector components.
 
SbVec3f & setValue (float x, float y, float z)
 Sets the vector components.
 
SbVec3f & setValue (const SbVec3f &barycentic, const SbVec3f &v0, const SbVec3f &v1, const SbVec3f &v2)
 Sets value of vector to be convex combination of 3 other vectors, using barycentic coordinates.
 
float & operator[] (int i)
 Accesses indexed component of vector.
 
const float & operator[] (int i) const
 
SbVec3f & operator*= (float d)
 Component-wise scalar multiplication and division operators.
 
SbVec3f & operator/= (float d)
 Component-wise scalar multiplication and division operators.
 
SbVec3f & operator+= (SbVec3f v)
 Component-wise vector addition and subtraction operators.
 
SbVec3f & operator-= (SbVec3f v)
 Component-wise vector addition and subtraction operators.
 
SbVec3f operator- () const
 Nondestructive unary negation - returns a new vector.
 
bool equals (const SbVec3f v, float tolerance) const
 Equality comparison within given tolerance em the square of the length of the maximum distance between the two vectors.
 
SbVec3f getClosestAxis () const
 Returns principal axis that is closest (based on maximum dot product) to this vector.
 

Additional Inherited Members

- Protected Attributes inherited from SbVec3f
float vec [3]
 Storage for vector components.
 

Detailed Description

This class is used to represent an RGB color. Each component of the vector is a floating-point number between 0.0 and 1.0. There are routines to convert back and forth between RGB and HSV. {}

See Also
SbVec3f

Definition at line 84 of file SbColor.h.

Constructor & Destructor Documentation

◆ SbColor() [1/4]

SbColor::SbColor ( )

Referenced by setHSVValue(), setHSVValue(), and setPackedValue().

◆ SbColor() [2/4]

SbColor::SbColor ( const SbVec3f vec3f)
inline

Definition at line 90 of file SbColor.h.

References SbVec3f::getValue(), SbVec3f::SbVec3f(), and SbVec3f::setValue().

◆ SbColor() [3/4]

SbColor::SbColor ( const float rgb[3])
inline

Definition at line 93 of file SbColor.h.

References SbVec3f::setValue().

◆ SbColor() [4/4]

SbColor::SbColor ( float r,
float g,
float b )
inline

Definition at line 96 of file SbColor.h.

References SbVec3f::setValue().

Member Function Documentation

◆ getHSVValue() [1/2]

void SbColor::getHSVValue ( float & h,
float & s,
float & v ) const

Referenced by getHSVValue().

◆ getHSVValue() [2/2]

void SbColor::getHSVValue ( float hsv[3]) const
inline

Definition at line 110 of file SbColor.h.

References getHSVValue().

◆ getPackedValue()

uint32_t SbColor::getPackedValue ( float transparency = 0.0) const

The alpha component is set to (1.0 - transparency) * 255, resulting in a hex value between 0 and 0xFF.
If transparency not specified, alpha is set to 0xFF (opaque).

◆ setHSVValue() [1/2]

SbColor & SbColor::setHSVValue ( const float hsv[3])
inline

Definition at line 103 of file SbColor.h.

References SbColor(), and setHSVValue().

◆ setHSVValue() [2/2]

SbColor & SbColor::setHSVValue ( float h,
float s,
float v )

Value is the same as brightness of the color.

References SbColor().

Referenced by setHSVValue().

◆ setPackedValue()

SbColor & SbColor::setPackedValue ( uint32_t orderedRGBA,
float & transparency )

The packed color format expressed in hexadecimal is 0xrrggbbaa, where

rr is the red value
gg is the green value
bb is the blue value
aa is the alpha value

RGBA component values range from 0 to 0xFF (255). The returned transparency value is a floating point value between 0.0 (opaque) and 1.0 (completely transparent). It is derived from the alpha component of the RGBA color.

References SbColor().

The documentation for this class was generated from the following file: