Collaboration diagram for osgEarth::Symbology::Color:

Public Types
enum	Format { RGBA, ABGR }
Public Member Functions
	Color ()
	Color (const Color &rhs)
	Color (const osg::Vec4f &rgba)
	Color (const Color &rhs, float a)
	Color (float r, float g, float b, float a=1.0f)
	Color (unsigned rgba)
	Color (const std::string &html, Format format=RGBA)
std::string	toHTML (Format format=RGBA) const
Color	brightness (float factor) const
Static Public Attributes
static Color	White
static Color	Silver
static Color	Gray
static Color	Black
static Color	Red
static Color	Maroon
static Color	Yellow
static Color	Olive
static Color	Lime
static Color	Green
static Color	Aqua
static Color	Teal
static Color	Blue
static Color	Navy
static Color	Fuchsia
static Color	Purple
static Color	Orange
static Color	Cyan
static Color	DarkGray

Detailed Description

Pre-set colors (convenience class).

Definition at line 31 of file Color.

Member Enumeration Documentation

enum osgEarth::Symbology::Color::Format

Enumerator:

RGBA
ABGR

Definition at line 33 of file Color.

Constructor & Destructor Documentation

osgEarth::Symbology::Color::Color ( ) [inline]

Creates a new default color

Definition at line 39 of file Color.

: osg::Vec4f(1,1,1,1) { }

osgEarth::Symbology::Color::Color ( const Color & rhs ) [inline]

Copy constructor

Definition at line 42 of file Color.

: osg::Vec4f(rhs) { }

osgEarth::Symbology::Color::Color ( const osg::Vec4f & rgba ) [inline]

Make from vec4

Definition at line 45 of file Color.

: osg::Vec4f(rgba) { }

Color::Color	(	const Color &	rhs,
		float	a
	)

Copy constructor with modified alpha value

Definition at line 104 of file Color.cpp.

                                        :
osg::Vec4f( rhs )
{
    (*this)[3] = a;
}

osgEarth::Symbology::Color::Color	(	float	r,
		float	g,
		float	b,
		float	a = `1.0f`
	)		`[inline]`

Component constructor

Definition at line 51 of file Color.

            : osg::Vec4f(r, g, b, a) { }

Color::Color ( unsigned rgba )

RGBA constructor

Definition at line 95 of file Color.cpp.

{
    set(
        (float)(rgba>>24)/255.0f, 
        (float)((rgba&0xFF0000)>>16)/255.0f, 
        (float)((rgba&0xFF00)>>8)/255.0f,
        (float)(rgba&0xFF)/255.0f );
}

Color::Color	(	const std::string &	html,
		Format	format = `RGBA`
	)

Construct a color from an HTML string (e.g., "#FF0004F")

Parses an HTML color ("#rrggbb" or "#rrggbbaa") into an OSG color.

Definition at line 111 of file Color.cpp.

{
    std::string t = html;
    std::transform( t.begin(), t.end(), t.begin(), ::tolower );
    osg::Vec4ub c(0,0,0,255);
    if ( t.length() >= 7 ) {
        c.r() |= t[1]<='9' ? (t[1]-'0')<<4 : (10+(t[1]-'a'))<<4;
        c.r() |= t[2]<='9' ? (t[2]-'0')    : (10+(t[2]-'a'));
        c.g() |= t[3]<='9' ? (t[3]-'0')<<4 : (10+(t[3]-'a'))<<4;
        c.g() |= t[4]<='9' ? (t[4]-'0')    : (10+(t[4]-'a'));
        c.b() |= t[5]<='9' ? (t[5]-'0')<<4 : (10+(t[5]-'a'))<<4;
        c.b() |= t[6]<='9' ? (t[6]-'0')    : (10+(t[6]-'a'));
        if ( t.length() == 9 ) {
            c.a() = 0;
            c.a() |= t[7]<='9' ? (t[7]-'0')<<4 : (10+(t[7]-'a'))<<4;
            c.a() |= t[8]<='9' ? (t[8]-'0')    : (10+(t[8]-'a'));
        }
    }
    float w = ((float)c.r())/255.0f;
    float x = ((float)c.g())/255.0f;
    float y = ((float)c.b())/255.0f;
    float z = ((float)c.a())/255.0f;

    if ( format == RGBA )
        set( w, x, y, z );
    else // ABGR
        set( z, y, x, w );
}

Member Function Documentation

Color Color::brightness ( float factor ) const

Lighten/darken the color by factor

Definition at line 163 of file Color.cpp.

{
    Color c( *this );
    rgb2hsv( c );
    c.b() = osg::clampBetween( perc * c.b(), 0.0f, 1.0f );
    hsv2rgb( c );
    return c;
}

Here is the call graph for this function:

std::string Color::toHTML ( Format format = RGBA ) const

Encode the color at an HTML color string (e.g., "#FF004F78")

Makes an HTML color ("#rrggbb" or "#rrggbbaa") from an OSG color.

Definition at line 142 of file Color.cpp.

{
    float w, x, y, z;
    if ( format == RGBA ) {
        w = r(), x = g(), y = b(), z = a();
    }
    else { // ABGR
        w = a(), x = b(), y = g(), z = r();
    }

    std::stringstream buf;
    buf << "#";
    buf << std::hex << std::setw(2) << std::setfill('0') << (int)(w*255.0f);
    buf << std::hex << std::setw(2) << std::setfill('0') << (int)(x*255.0f);
    buf << std::hex << std::setw(2) << std::setfill('0') << (int)(y*255.0f);
    buf << std::hex << std::setw(2) << std::setfill('0') << (int)(z*255.0f);
    std::string ssStr = buf.str();
    return ssStr;
}