CColor Struct Reference

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Detailed Description

This struct represents an RGBA color.

The RBGA component values are stored as double precision numbers.

CColor objects are created from OGLLight and OGLMaterial objects.

Note:

If a component value is greater than a signed, single-precision value, the component value is interpreted as a negative value.

In most cases, the component values are normalized to the range 0 to 1. TrianglePoint::GetColor is an exception, and returns values in the range 0 to 255.

Other XSI objects and properties store colors differently:

• Shaders and XSI objects have separate Parameter objects for each color component (for example, Scene_Material.Phong.diffuse.green). These component values are normalized and use double precision.

• Vertex Color properties store color component values as arrays of doubles inside a ClusterProperty.

• Wireframe colors are encoded as 10-bit values (0 to 1023), with the least significant bit ignored. Each of the R,G,B channels is 3 bits (a number from 0 to 7), and the wireframe color is encoded as:

   B2|B1|B0|G2|G1|G0|R2|R1|R0|0| 
  

See also:

CColorArray, OGLLight::GetColor, OGLMaterial::GetDiffuse, OGLMaterial::GetSpecular, OGLMaterial::GetAmbient

#include <xsi_color.h>

List of all members.

Public Member Functions
	CColor ()
	CColor (const CColor &in_color)
	CColor (double in_rc, double in_gc, double in_bc, double in_ac)
bool	operator== (const CColor &in_color) const
bool	operator!= (const CColor &in_color) const
Public Attributes
double	r
double	g
double	b
double	a

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Constructor & Destructor Documentation

CColor

(

)

[inline]

Constructs a CColor object.

CColor

(

const CColor &

in_color

)

[inline]

Constructs a new CColor object from an existing CColor object.

Parameters:

in_color

An existing CColor object to copy into this CColor object.

CColor	(	double	in_rc,
		double	in_gc,
		double	in_bc,
		double	in_ac
	)		[inline]

Constructs a new CColor object from RGBA values.

Parameters:

in_rc	Red component value.
in_gc	Green component value.
in_bc	Blue component value.
in_ac	Alpha component value.

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Member Function Documentation

bool operator==

(

const CColor &

in_color

)

const [inline]

Tests whether two CColor objects are equal.

Parameters:

in_color

CColor to compare with this CColor object.

Returns:

True if the colors are equal, and false otherwise.

bool operator!=

(

const CColor &

in_color

)

const [inline]

Tests whether two CColor objects are different.

Parameters:

in_color

CColor to compare with this CColor object

Returns:

True if the colors are different, and false is they are the same.

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Member Data Documentation

double r

Red component value

double g

Green component value

double b

Blue component value

double a

Alpha component value

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

• xsi_color.h